Split out libstd crate

45 files changed, 4925 insertions, 413 deletions

diff --git a/Cargo.toml b/Cargo.toml
index f95ca35..18944a4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,14 +5,14 @@ description = "A safe wrapper around smealum's ctrulib."
 license = "https://en.wikipedia.org/wiki/Zlib_License"
 links = "ctru"
 name = "ctru-rs"
-version = "0.4.0"
-
-[dependencies.ctru-sys]
-path = "ctru-sys"
-
-[dependencies.alloc_system3ds]
-git = "https://github.com/rust3ds/alloc_system3ds"
+version = "0.5.0"
 
 [lib]
 crate-type = ["rlib"]
 name = "ctru"
+
+[dependencies.ctru-sys]
+path = "ctru-sys"
+
+[dependencies.std]
+path = "std"
diff --git a/ctru-sys/src/svc.rs b/ctru-sys/src/svc.rs
index 12efcca..88a6992 100644
--- a/ctru-sys/src/svc.rs
+++ b/ctru-sys/src/svc.rs
@@ -1,13 +1,17 @@
-//TODO: Implement static functions
+/* automatically generated by rust-bindgen */
 
-use {Handle, Result};
-use libc::c_void;
-use ThreadFunc;
-use types::*;
+#![allow(dead_code,
+         non_camel_case_types,
+         non_upper_case_globals,
+         non_snake_case)]
 
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed1 {
+use ::{Handle, Result};
+use ::ThreadFunc;
+
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum MemOp {
     MEMOP_FREE = 1,
     MEMOP_RESERVE = 2,
     MEMOP_ALLOC = 3,
@@ -22,10 +26,10 @@ pub enum Enum_Unnamed1 {
     MEMOP_LINEAR_FLAG = 65536,
     MEMOP_ALLOC_LINEAR = 65539,
 }
-pub type MemOp = Enum_Unnamed1;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed2 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum MemState {
     MEMSTATE_FREE = 0,
     MEMSTATE_RESERVED = 1,
     MEMSTATE_IO = 2,
@@ -39,142 +43,128 @@ pub enum Enum_Unnamed2 {
     MEMSTATE_ALIASCODE = 10,
     MEMSTATE_LOCKED = 11,
 }
-pub type MemState = Enum_Unnamed2;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed3 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum MemPerm {
     MEMPERM_READ = 1,
     MEMPERM_WRITE = 2,
     MEMPERM_EXECUTE = 4,
     MEMPERM_DONTCARE = 268435456,
 }
-pub type MemPerm = Enum_Unnamed3;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed4 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct MemInfo {
     pub base_addr: u32,
     pub size: u32,
     pub perm: u32,
     pub state: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed4 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed4 {
+impl ::core::default::Default for MemInfo {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type MemInfo = Struct_Unnamed4;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed5 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct PageInfo {
     pub flags: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed5 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed5 {
+impl ::core::default::Default for PageInfo {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type PageInfo = Struct_Unnamed5;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed6 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ArbitrationType {
     ARBITRATION_SIGNAL = 0,
     ARBITRATION_WAIT_IF_LESS_THAN = 1,
     ARBITRATION_DECREMENT_AND_WAIT_IF_LESS_THAN = 2,
     ARBITRATION_WAIT_IF_LESS_THAN_TIMEOUT = 3,
     ARBITRATION_DECREMENT_AND_WAIT_IF_LESS_THAN_TIMEOUT = 4,
 }
-pub type ArbitrationType = Enum_Unnamed6;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed7 { THREADINFO_TYPE_UNKNOWN = 0, }
-pub type ThreadInfoType = Enum_Unnamed7;
-#[derive(Clone, Copy)]
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ResetType { RESET_ONESHOT = 0, RESET_STICKY = 1, RESET_PULSE = 2, }
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ThreadInfoType { THREADINFO_TYPE_UNKNOWN = 0, }
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ProcessEventReason { REASON_CREATE = 1, REASON_ATTACH = 2, }
 #[repr(C)]
-pub enum Enum_Unnamed8 { REASON_CREATE = 1, REASON_ATTACH = 2, }
-pub type ProcessEventReason = Enum_Unnamed8;
-#[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed9 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct ProcessEvent {
     pub program_id: u64,
     pub process_name: [u8; 8usize],
     pub process_id: u32,
     pub reason: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed9 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed9 {
+impl ::core::default::Default for ProcessEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type ProcessEvent = Struct_Unnamed9;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed10 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ExitProcessEventReason {
     EXITPROCESS_EVENT_NONE = 0,
     EXITPROCESS_EVENT_TERMINATE = 1,
     EXITPROCESS_EVENT_UNHANDLED_EXCEPTION = 2,
 }
-pub type ExitProcessEventReason = Enum_Unnamed10;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed11 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct ExitProcessEvent {
     pub reason: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed11 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed11 {
+impl ::core::default::Default for ExitProcessEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type ExitProcessEvent = Struct_Unnamed11;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed12 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct CreateThreadEvent {
     pub creator_thread_id: u32,
     pub base_addr: u32,
     pub entry_point: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed12 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed12 {
+impl ::core::default::Default for CreateThreadEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type CreateThreadEvent = Struct_Unnamed12;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed13 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ExitThreadEventReason {
     EXITTHREAD_EVENT_NONE = 0,
     EXITTHREAD_EVENT_TERMINATE = 1,
     EXITTHREAD_EVENT_UNHANDLED_EXC = 2,
     EXITTHREAD_EVENT_TERMINATE_PROCESS = 3,
 }
-pub type ExitThreadEventReason = Enum_Unnamed13;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed14 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct ExitThreadEvent {
     pub reason: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed14 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed14 {
+impl ::core::default::Default for ExitThreadEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type ExitThreadEvent = Struct_Unnamed14;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed15 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum UserBreakType {
     USERBREAK_PANIC = 0,
     USERBREAK_ASSERT = 1,
     USERBREAK_USER = 2,
 }
-pub type UserBreakType = Enum_Unnamed15;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed16 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum ExceptionEventType {
     EXC_EVENT_UNDEFINED_INSTRUCTION = 0,
     EXC_EVENT_UNKNOWN1 = 1,
     EXC_EVENT_UNKNOWN2 = 2,
@@ -185,77 +175,63 @@ pub enum Enum_Unnamed16 {
     EXC_EVENT_DEBUGGER_BREAK = 7,
     EXC_EVENT_UNDEFINED_SYSCALL = 8,
 }
-pub type ExceptionEventType = Enum_Unnamed16;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed17 {
-    pub _type: u32,
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct ExceptionEvent {
+    pub type_: u32,
     pub address: u32,
     pub argument: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed17 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed17 {
+impl ::core::default::Default for ExceptionEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type ExceptionEvent = Struct_Unnamed17;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed18 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct SchedulerInOutEvent {
     pub clock_tick: u64,
 }
-impl ::core::clone::Clone for Struct_Unnamed18 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed18 {
+impl ::core::default::Default for SchedulerInOutEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type SchedulerInOutEvent = Struct_Unnamed18;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed19 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct SyscallInOutEvent {
     pub clock_tick: u64,
     pub syscall: u32,
+    _bindgen_padding_0_: [u8; 4usize],
 }
-impl ::core::clone::Clone for Struct_Unnamed19 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed19 {
+impl ::core::default::Default for SyscallInOutEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type SyscallInOutEvent = Struct_Unnamed19;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed20 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct OutputStringEvent {
     pub string_addr: u32,
     pub string_size: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed20 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed20 {
+impl ::core::default::Default for OutputStringEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type OutputStringEvent = Struct_Unnamed20;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed21 {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct MapEvent {
     pub mapped_addr: u32,
     pub mapped_size: u32,
     pub memperm: u32,
     pub memstate: u32,
 }
-impl ::core::clone::Clone for Struct_Unnamed21 {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct_Unnamed21 {
+impl ::core::default::Default for MapEvent {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type MapEvent = Struct_Unnamed21;
-#[derive(Clone, Copy)]
-#[repr(C)]
-pub enum Enum_Unnamed22 {
+#[derive(Copy, Clone)]
+#[repr(u32)]
+#[derive(Debug)]
+pub enum DebugEventType {
     DBG_EVENT_PROCESS = 0,
     DBG_EVENT_CREATE_THREAD = 1,
     DBG_EVENT_EXIT_THREAD = 2,
@@ -270,16 +246,16 @@ pub enum Enum_Unnamed22 {
     DBG_EVENT_OUTPUT_STRING = 11,
     DBG_EVENT_MAP = 12,
 }
-pub type DebugEventType = Enum_Unnamed22;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct_Unnamed23 {
-    pub _type: u32,
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct DebugEventInfo {
+    pub type_: u32,
     pub thread_id: u32,
     pub unknown: [u32; 2usize],
     pub _bindgen_data_1_: [u64; 3usize],
 }
-impl Struct_Unnamed23 {
+impl DebugEventInfo {
     pub unsafe fn process(&mut self) -> *mut ProcessEvent {
         let raw: *mut u8 = ::core::mem::transmute(&self._bindgen_data_1_);
         ::core::mem::transmute(raw.offset(0))
@@ -317,18 +293,50 @@ impl Struct_Unnamed23 {
         ::core::mem::transmute(raw.offset(0))
     }
 }
-impl ::core::clone::Clone for Struct_Unnamed23 {
-    fn clone(&self) -> Self { *self }
+impl ::core::default::Default for DebugEventInfo {
+    fn default() -> Self { unsafe { ::core::mem::zeroed() } }
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct CodeSetInfo {
+    pub name: [u8; 8usize],
+    pub unk1: u16,
+    pub unk2: u16,
+    pub unk3: u32,
+    pub text_addr: u32,
+    pub text_size: u32,
+    pub ro_addr: u32,
+    pub ro_size: u32,
+    pub rw_addr: u32,
+    pub rw_size: u32,
+    pub text_size_total: u32,
+    pub ro_size_total: u32,
+    pub rw_size_total: u32,
+    pub unk4: u32,
+    pub program_id: u64,
 }
-impl ::core::default::Default for Struct_Unnamed23 {
+impl ::core::default::Default for CodeSetInfo {
+    fn default() -> Self { unsafe { ::core::mem::zeroed() } }
+}
+#[repr(C)]
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct StartupInfo {
+    pub priority: ::libc::c_int,
+    pub stack_size: u32,
+    pub argc: ::libc::c_int,
+    pub argv: *mut u16,
+    pub envp: *mut u16,
+}
+impl ::core::default::Default for StartupInfo {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type DebugEventInfo = Struct_Unnamed23;
 extern "C" {
     pub fn svcControlMemory(addr_out: *mut u32, addr0: u32, addr1: u32,
                             size: u32, op: MemOp, perm: MemPerm) -> Result;
     pub fn svcControlProcessMemory(process: Handle, addr0: u32, addr1: u32,
-                                   size: u32, _type: u32, perm: u32)
+                                   size: u32, type_: u32, perm: u32)
      -> Result;
     pub fn svcCreateMemoryBlock(memblock: *mut Handle, addr: u32, size: u32,
                                 my_perm: MemPerm, other_perm: MemPerm)
@@ -341,102 +349,125 @@ extern "C" {
                                  endAddr: u32) -> Result;
     pub fn svcUnmapMemoryBlock(memblock: Handle, addr: u32) -> Result;
     pub fn svcStartInterProcessDma(dma: *mut Handle, dstProcess: Handle,
-                                   dst: *mut c_void,
+                                   dst: *mut ::libc::c_void,
                                    srcProcess: Handle,
-                                   src: *const c_void,
-                                   size: u32,
-                                   dmaConfig: *mut c_void)
-     -> Result;
+                                   src: *const ::libc::c_void, size: u32,
+                                   dmaConfig: *mut ::libc::c_void) -> Result;
     pub fn svcStopDma(dma: Handle) -> Result;
-    pub fn svcGetDmaState(dmaState: *mut c_void, dma: Handle)
+    pub fn svcGetDmaState(dmaState: *mut ::libc::c_void, dma: Handle)
      -> Result;
     pub fn svcQueryMemory(info: *mut MemInfo, out: *mut PageInfo, addr: u32)
      -> Result;
     pub fn svcQueryProcessMemory(info: *mut MemInfo, out: *mut PageInfo,
                                  process: Handle, addr: u32) -> Result;
     pub fn svcInvalidateProcessDataCache(process: Handle,
-                                         addr: *mut c_void,
+                                         addr: *mut ::libc::c_void,
                                          size: u32) -> Result;
     pub fn svcFlushProcessDataCache(process: Handle,
-                                    addr: *const c_void,
-                                    size: u32) -> Result;
-    pub fn svcReadProcessMemory(buffer: *mut c_void,
-                                debug: Handle, addr: u32, size: u32)
+                                    addr: *const ::libc::c_void, size: u32)
      -> Result;
-    pub fn svcWriteProcessMemory(debug: Handle,
-                                 buffer: *const c_void,
+    pub fn svcReadProcessMemory(buffer: *mut ::libc::c_void, debug: Handle,
+                                addr: u32, size: u32) -> Result;
+    pub fn svcWriteProcessMemory(debug: Handle, buffer: *const ::libc::c_void,
                                  addr: u32, size: u32) -> Result;
     pub fn svcOpenProcess(process: *mut Handle, processId: u32) -> Result;
     pub fn svcExitProcess();
     pub fn svcTerminateProcess(process: Handle) -> Result;
-    pub fn svcGetProcessInfo(out: *mut s64, process: Handle, _type: u32)
+    pub fn svcGetProcessInfo(out: *mut i64, process: Handle, type_: u32)
      -> Result;
     pub fn svcGetProcessId(out: *mut u32, handle: Handle) -> Result;
-    pub fn svcGetProcessList(processCount: *mut s32, processIds: *mut u32,
-                             processIdMaxCount: s32) -> Result;
+    pub fn svcGetProcessList(processCount: *mut i32, processIds: *mut u32,
+                             processIdMaxCount: i32) -> Result;
     pub fn svcCreatePort(portServer: *mut Handle, portClient: *mut Handle,
-                         name: *const u8,
-                         maxSessions: s32) -> Result;
-    pub fn svcConnectToPort(out: *mut Handle,
-                            portName: *const u8)
+                         name: *const ::libc::c_char, maxSessions: i32)
+     -> Result;
+    pub fn svcConnectToPort(out: *mut Handle, portName: *const ::libc::c_char)
      -> Result;
+    pub fn svcCreateCodeSet(out: *mut Handle, info: *const CodeSetInfo,
+                            code_ptr: *mut ::libc::c_void,
+                            ro_ptr: *mut ::libc::c_void,
+                            data_ptr: *mut ::libc::c_void) -> Result;
+    pub fn svcCreateProcess(out: *mut Handle, codeset: Handle,
+                            arm11kernelcaps: *const u32,
+                            arm11kernelcaps_num: u32) -> Result;
+    pub fn svcSetProcessAffinityMask(process: Handle,
+                                     affinitymask: *const u8,
+                                     processorcount: i32) -> Result;
+    pub fn svcSetProcessIdealProcessor(process: Handle, processorid: i32)
+     -> Result;
+    pub fn svcRun(process: Handle, info: *const StartupInfo) -> Result;
     pub fn svcCreateThread(thread: *mut Handle, entrypoint: ThreadFunc,
                            arg: u32, stack_top: *mut u32,
-                           thread_priority: s32, processor_id: s32) -> Result;
+                           thread_priority: i32, processor_id: i32) -> Result;
     pub fn svcOpenThread(thread: *mut Handle, process: Handle, threadId: u32)
      -> Result;
     pub fn svcExitThread();
-    pub fn svcSleepThread(ns: s64);
-    pub fn svcGetThreadPriority(out: *mut s32, handle: Handle) -> Result;
-    pub fn svcSetThreadPriority(thread: Handle, prio: s32) -> Result;
+    pub fn svcSleepThread(ns: i64);
+    pub fn svcGetThreadPriority(out: *mut i32, handle: Handle) -> Result;
+    pub fn svcSetThreadPriority(thread: Handle, prio: i32) -> Result;
     pub fn svcGetThreadAffinityMask(affinitymask: *mut u8, thread: Handle,
-                                    processorcount: s32) -> Result;
-    pub fn svcSetThreadAffinityMask(thread: Handle, affinitymask: *mut u8,
-                                    processorcount: s32) -> Result;
-    pub fn svcGetThreadIdealProcessor(processorid: *mut s32, thread: Handle)
+                                    processorcount: i32) -> Result;
+    pub fn svcSetThreadAffinityMask(thread: Handle, affinitymask: *const u8,
+                                    processorcount: i32) -> Result;
+    pub fn svcGetThreadIdealProcessor(processorid: *mut i32, thread: Handle)
      -> Result;
-    pub fn svcSetThreadIdealProcessor(thread: Handle, processorid: s32)
+    pub fn svcSetThreadIdealProcessor(thread: Handle, processorid: i32)
      -> Result;
-    pub fn svcGetProcessorID() -> s32;
+    pub fn svcGetProcessorID() -> i32;
     pub fn svcGetThreadId(out: *mut u32, handle: Handle) -> Result;
+    pub fn svcGetResourceLimit(resourceLimit: *mut Handle, process: Handle)
+     -> Result;
+    pub fn svcGetResourceLimitLimitValues(values: *mut i64,
+                                          resourceLimit: Handle,
+                                          names: *mut u32, nameCount: i32)
+     -> Result;
+    pub fn svcGetResourceLimitCurrentValues(values: *mut i64,
+                                            resourceLimit: Handle,
+                                            names: *mut u32, nameCount: i32)
+     -> Result;
     pub fn svcGetProcessIdOfThread(out: *mut u32, handle: Handle) -> Result;
-    pub fn svcGetThreadInfo(out: *mut s64, thread: Handle,
-                            _type: ThreadInfoType) -> Result;
+    pub fn svcGetThreadInfo(out: *mut i64, thread: Handle,
+                            type_: ThreadInfoType) -> Result;
     pub fn svcCreateMutex(mutex: *mut Handle, initially_locked: u8) -> Result;
     pub fn svcReleaseMutex(handle: Handle) -> Result;
-    pub fn svcCreateSemaphore(semaphore: *mut Handle, initial_count: s32,
-                              max_count: s32) -> Result;
-    pub fn svcReleaseSemaphore(count: *mut s32, semaphore: Handle,
-                               release_count: s32) -> Result;
-    pub fn svcCreateEvent(event: *mut Handle, reset_type: u8) -> Result;
+    pub fn svcCreateSemaphore(semaphore: *mut Handle, initial_count: i32,
+                              max_count: i32) -> Result;
+    pub fn svcReleaseSemaphore(count: *mut i32, semaphore: Handle,
+                               release_count: i32) -> Result;
+    pub fn svcCreateEvent(event: *mut Handle, reset_type: ResetType)
+     -> Result;
     pub fn svcSignalEvent(handle: Handle) -> Result;
     pub fn svcClearEvent(handle: Handle) -> Result;
-    pub fn svcWaitSynchronization(handle: Handle, nanoseconds: s64) -> Result;
-    pub fn svcWaitSynchronizationN(out: *mut s32, handles: *mut Handle,
-                                   handles_num: s32, wait_all: u8,
-                                   nanoseconds: s64) -> Result;
+    pub fn svcWaitSynchronization(handle: Handle, nanoseconds: i64) -> Result;
+    pub fn svcWaitSynchronizationN(out: *mut i32, handles: *mut Handle,
+                                   handles_num: i32, wait_all: u8,
+                                   nanoseconds: i64) -> Result;
     pub fn svcCreateAddressArbiter(arbiter: *mut Handle) -> Result;
     pub fn svcArbitrateAddress(arbiter: Handle, addr: u32,
-                               _type: ArbitrationType, value: s32,
-                               nanoseconds: s64) -> Result;
+                               type_: ArbitrationType, value: i32,
+                               nanoseconds: i64) -> Result;
     pub fn svcSendSyncRequest(session: Handle) -> Result;
     pub fn svcAcceptSession(session: *mut Handle, port: Handle) -> Result;
-    pub fn svcReplyAndReceive(index: *mut s32, handles: *mut Handle,
-                              handleCount: s32, replyTarget: Handle)
+    pub fn svcReplyAndReceive(index: *mut i32, handles: *mut Handle,
+                              handleCount: i32, replyTarget: Handle)
+     -> Result;
+    pub fn svcBindInterrupt(interruptId: u32, event: Handle, priority: i32,
+                            isManualClear: u8) -> Result;
+    pub fn svcUnbindInterrupt(interruptId: u32, event: Handle) -> Result;
+    pub fn svcCreateTimer(timer: *mut Handle, reset_type: ResetType)
      -> Result;
-    pub fn svcCreateTimer(timer: *mut Handle, reset_type: u8) -> Result;
-    pub fn svcSetTimer(timer: Handle, initial: s64, interval: s64) -> Result;
+    pub fn svcSetTimer(timer: Handle, initial: i64, interval: i64) -> Result;
     pub fn svcCancelTimer(timer: Handle) -> Result;
     pub fn svcClearTimer(timer: Handle) -> Result;
     pub fn svcGetSystemTick() -> u64;
     pub fn svcCloseHandle(handle: Handle) -> Result;
     pub fn svcDuplicateHandle(out: *mut Handle, original: Handle) -> Result;
-    pub fn svcGetSystemInfo(out: *mut s64, _type: u32, param: s32) -> Result;
-    pub fn svcKernelSetState(_type: u32, param0: u32, param1: u32,
+    pub fn svcGetSystemInfo(out: *mut i64, type_: u32, param: i32) -> Result;
+    pub fn svcKernelSetState(type_: u32, param0: u32, param1: u32,
                              param2: u32) -> Result;
     pub fn svcBreak(breakReason: UserBreakType);
-    pub fn svcOutputDebugString(str: *const u8,
-                                length: i32) -> Result;
+    pub fn svcOutputDebugString(str: *const ::libc::c_char,
+                                length: ::libc::c_int) -> Result;
     pub fn svcDebugActiveProcess(debug: *mut Handle, processId: u32)
      -> Result;
     pub fn svcBreakDebugProcess(debug: Handle) -> Result;
@@ -445,6 +476,6 @@ extern "C" {
      -> Result;
     pub fn svcContinueDebugEvent(debug: Handle, flags: u32) -> Result;
     pub fn svcBackdoor(callback:
-                           ::core::option::Option<extern "C" fn() -> s32>)
+                           ::core::option::Option<extern "C" fn() -> i32>)
      -> Result;
 }
diff --git a/ctru-sys/src/synchronization.rs b/ctru-sys/src/synchronization.rs
index 6715d53..0626394 100644
--- a/ctru-sys/src/synchronization.rs
+++ b/ctru-sys/src/synchronization.rs
@@ -1,19 +1,40 @@
-//TODO: Implement stuff that bindgen doesn't catch
+/* automatically generated by rust-bindgen */
 
-use Handle;
+#![allow(dead_code,
+         non_camel_case_types,
+         non_upper_case_globals,
+         non_snake_case)]
 
+use Handle;
+use svc::ResetType;
 use super::lock::*;
 
 pub type LightLock = _LOCK_T;
 pub type RecursiveLock = _LOCK_RECURSIVE_T;
+#[repr(C)]
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct LightEvent {
+    pub state: i32,
+    pub lock: LightLock,
+}
+impl ::core::default::Default for LightEvent {
+    fn default() -> Self { unsafe { ::core::mem::zeroed() } }
+}
 extern "C" {
     pub fn __sync_get_arbiter() -> Handle;
     pub fn LightLock_Init(lock: *mut LightLock);
-    pub fn LightLock_Lock(lock: *mut LightLock);
-    pub fn LightLock_TryLock(lock: *mut LightLock) -> i32;
-    pub fn LightLock_Unlock(lock: *mut LightLock);
+    pub fn LightLock_Lock(lock: *const LightLock);
+    pub fn LightLock_TryLock(lock: *const LightLock) -> ::libc::c_int;
+    pub fn LightLock_Unlock(lock: *const LightLock);
     pub fn RecursiveLock_Init(lock: *mut RecursiveLock);
-    pub fn RecursiveLock_Lock(lock: *mut RecursiveLock);
-    pub fn RecursiveLock_TryLock(lock: *mut RecursiveLock) -> i32;
-    pub fn RecursiveLock_Unlock(lock: *mut RecursiveLock);
+    pub fn RecursiveLock_Lock(lock: *const RecursiveLock);
+    pub fn RecursiveLock_TryLock(lock: *const RecursiveLock) -> ::libc::c_int;
+    pub fn RecursiveLock_Unlock(lock: *const RecursiveLock);
+    pub fn LightEvent_Init(event: *mut LightEvent, reset_type: ResetType);
+    pub fn LightEvent_Clear(event: *mut LightEvent);
+    pub fn LightEvent_Pulse(event: *mut LightEvent);
+    pub fn LightEvent_Signal(event: *mut LightEvent);
+    pub fn LightEvent_TryWait(event: *mut LightEvent) -> ::libc::c_int;
+    pub fn LightEvent_Wait(event: *mut LightEvent);
 }
diff --git a/ctru-sys/src/sys/libc.rs b/ctru-sys/src/sys/libc.rs
index 743e064..e7870a9 100644
--- a/ctru-sys/src/sys/libc.rs
+++ b/ctru-sys/src/sys/libc.rs
@@ -17,6 +17,8 @@ pub type c_long = i32;
 pub type c_ulong = u32;
 pub type c_longlong = i64;
 pub type c_ulonglong = u64;
+pub type c_float = f32;
+pub type c_double = f64;
 
 pub type size_t = usize;
 pub type ssize_t = isize;
diff --git a/ctru-sys/src/sys/lock.rs b/ctru-sys/src/sys/lock.rs
index dcab2d7..0fece83 100644
--- a/ctru-sys/src/sys/lock.rs
+++ b/ctru-sys/src/sys/lock.rs
@@ -1,20 +1,22 @@
-//<sys/lock.h> from devkitArm, needed for synchronization.rs to compile
+/* automatically generated by rust-bindgen */
 
+#![allow(dead_code,
+         non_camel_case_types,
+         non_upper_case_globals,
+         non_snake_case)]
 pub type _LOCK_T = i32;
 #[repr(C)]
-#[derive(Copy)]
-pub struct Struct___lock_t {
+#[derive(Copy, Clone)]
+#[derive(Debug)]
+pub struct __lock_t {
     pub lock: _LOCK_T,
     pub thread_tag: u32,
     pub counter: u32,
 }
-impl ::core::clone::Clone for Struct___lock_t {
-    fn clone(&self) -> Self { *self }
-}
-impl ::core::default::Default for Struct___lock_t {
+impl ::core::default::Default for __lock_t {
     fn default() -> Self { unsafe { ::core::mem::zeroed() } }
 }
-pub type _LOCK_RECURSIVE_T = Struct___lock_t;
+pub type _LOCK_RECURSIVE_T = __lock_t;
 extern "C" {
     pub fn __libc_lock_init(lock: *mut _LOCK_T);
     pub fn __libc_lock_init_recursive(lock: *mut _LOCK_RECURSIVE_T);
@@ -24,8 +26,7 @@ extern "C" {
     pub fn __libc_lock_acquire_recursive(lock: *mut _LOCK_RECURSIVE_T);
     pub fn __libc_lock_release(lock: *mut _LOCK_T);
     pub fn __libc_lock_release_recursive(lock: *mut _LOCK_RECURSIVE_T);
-    pub fn __libc_lock_try_acquire(lock: *mut _LOCK_T)
-     -> i32;
+    pub fn __libc_lock_try_acquire(lock: *mut _LOCK_T) -> ::libc::c_int;
     pub fn __libc_lock_try_acquire_recursive(lock: *mut _LOCK_RECURSIVE_T)
-     -> i32;
+     -> ::libc::c_int;
 }
diff --git a/src/console.rs b/src/console.rs
index 6e05ec2..78a88a2 100644
--- a/src/console.rs
+++ b/src/console.rs
@@ -3,9 +3,9 @@ use libctru::libc;
 
 use gfx::Screen;
 
-use core::fmt::{self, Write};
-use core::default::Default;
-use core::ptr;
+use std::fmt::{self, Write};
+use std::default::Default;
+use std::ptr;
 
 pub struct Console {
     context: PrintConsole,
diff --git a/src/gfx.rs b/src/gfx.rs
index 7504632..7f819ea 100644
--- a/src/gfx.rs
+++ b/src/gfx.rs
@@ -1,8 +1,8 @@
 use libctru::gfx;
 
-use core::default::Default;
-use core::marker::PhantomData;
-use core::ops::Drop;
+use std::default::Default;
+use std::marker::PhantomData;
+use std::ops::Drop;
 
 use services::gspgpu::FramebufferFormat;
 
@@ -82,9 +82,9 @@ impl Gfx {
     }
 
     pub fn get_framebuffer(&mut self, screen: Screen, side: Side) -> (&'static mut [u8], u16, u16) {
-        use core::convert::Into;
+        use std::convert::Into;
         unsafe {
-            use core::slice::from_raw_parts_mut;
+            use std::slice::from_raw_parts_mut;
 
             let mut w: u16 = 0;
             let mut h: u16 = 0;
@@ -112,12 +112,12 @@ impl Gfx {
     }
 
     pub fn get_framebuffer_format(&self, screen: Screen) -> FramebufferFormat {
-        use core::convert::Into;
+        use std::convert::Into;
         unsafe { gfx::gfxGetScreenFormat(screen.into()).into() }
     }
 
     pub fn set_framebuffer_format(&mut self, screen: Screen, fmt: FramebufferFormat) {
-        use core::convert::Into;
+        use std::convert::Into;
         unsafe { gfx::gfxSetScreenFormat(screen.into(), fmt.into()) }
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index 1f13b99..56ab565 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,79 +1,13 @@
-#![feature(alloc)]
-#![feature(allow_internal_unstable)]
-#![feature(collections)]
-#![feature(core_intrinsics)]
-#![feature(char_escape_debug)]
-#![feature(int_error_internals)]
-#![feature(lang_items)]
-#![feature(macro_reexport)]
-#![feature(prelude_import)]
-#![feature(slice_concat_ext)]
-#![feature(slice_patterns)]
-#![feature(str_internals)]
-#![feature(try_from)]
-#![feature(unicode)]
-
-#![no_std]
-
 #![crate_type = "rlib"]
 #![crate_name = "ctru"]
 
-extern crate alloc;
-extern crate alloc_system;
-#[macro_reexport(format, vec)]
-#[macro_use]
-extern crate collections;
-extern crate rustc_unicode;
-
 extern crate ctru_sys as libctru;
 
-#[prelude_import]
-#[allow(unused)]
-use prelude::*;
-
-pub mod std {
-    pub use core::{any, cell, clone, cmp, convert, default, hash, i16, i32, i64, i8, isize, iter,
-                   marker, mem, ops, option, ptr, result, u16, u32, u64, u8, usize, intrinsics};
-    pub use rustc_unicode::char;
-    pub use alloc::{arc, rc};
-    pub use collections::{borrow, boxed, fmt, slice, str, string, vec};
-    pub use system::{error, io, memchr, ascii, ffi, path};
-
-    pub mod collections {
-        pub use collections::{binary_heap, btree_map, btree_set, linked_list, vec_deque,
-                              BinaryHeap, LinkedList, VecDeque, String, Vec, BTreeMap, BTreeSet};
-    }
-}
-
-pub mod prelude {
-    pub use std;
-    pub use std::marker::{Copy, Send, Sized, Sync};
-    pub use std::ops::{Drop, Fn, FnMut, FnOnce};
-    pub use std::mem::drop;
-    pub use std::boxed::Box;
-    pub use std::borrow::ToOwned;
-    pub use std::clone::Clone;
-    pub use std::cmp::{PartialEq, PartialOrd, Eq, Ord};
-    pub use std::convert::{AsRef, AsMut, Into, From};
-    pub use std::default::Default;
-    pub use std::iter::{Iterator, Extend, IntoIterator};
-    pub use std::iter::{DoubleEndedIterator, ExactSizeIterator};
-    pub use std::option::Option::{self, Some, None};
-    pub use std::result::Result::{self, Ok, Err};
-    pub use std::slice::SliceConcatExt;
-    pub use std::string::{String, ToString};
-    pub use std::vec::Vec;
-    pub use std::fmt::Write;
-}
-
-pub use std::{fmt, boxed, vec};
-
 pub mod console;
 pub mod srv;
 pub mod gfx;
 pub mod services;
 pub mod sdmc;
-pub mod system;
 
 pub use srv::Srv;
 pub use gfx::Gfx;
diff --git a/src/sdmc.rs b/src/sdmc.rs
index 75a58a9..8698f80 100644
--- a/src/sdmc.rs
+++ b/src/sdmc.rs
@@ -1,4 +1,4 @@
-use core::marker::PhantomData;
+use std::marker::PhantomData;
 
 use libctru::sdmc::*;
 
diff --git a/src/services/apt.rs b/src/services/apt.rs
index 69094b2..536f463 100644
--- a/src/services/apt.rs
+++ b/src/services/apt.rs
@@ -1,4 +1,4 @@
-use core::marker::PhantomData;
+use std::marker::PhantomData;
 
 use libctru::services::apt;
 
diff --git a/src/services/fs.rs b/src/services/fs.rs
index 0307dc8..33eef9f 100644
--- a/src/services/fs.rs
+++ b/src/services/fs.rs
@@ -4,12 +4,11 @@
 //! Only the SD card is currently supported.
 
 
-use core::marker::PhantomData;
-use core::ptr;
-use core::slice;
-use core::mem;
-use alloc::arc::Arc;
-use collections::Vec;
+use std::marker::PhantomData;
+use std::ptr;
+use std::slice;
+use std::mem;
+use std::arc::Arc;
 
 use std::path::{Path, PathBuf};
 use std::ffi::OsString;
diff --git a/src/services/gspgpu.rs b/src/services/gspgpu.rs
index efa153d..6bd972c 100644
--- a/src/services/gspgpu.rs
+++ b/src/services/gspgpu.rs
@@ -1,6 +1,6 @@
 use libctru::services::gspgpu;
 
-use core::convert::From;
+use std::convert::From;
 
 pub enum Event {
     Psc0,
diff --git a/src/services/hid.rs b/src/services/hid.rs
index 1b90194..c2a8b3d 100644
--- a/src/services/hid.rs
+++ b/src/services/hid.rs
@@ -1,5 +1,5 @@
-use core::convert::Into;
-use core::marker::PhantomData;
+use std::convert::Into;
+use std::marker::PhantomData;
 
 use libctru::services::hid;
 
diff --git a/src/srv.rs b/src/srv.rs
index 9c4388c..a7376a5 100644
--- a/src/srv.rs
+++ b/src/srv.rs
@@ -1,6 +1,6 @@
 use libctru::srv::*;
 
-use core::marker::PhantomData;
+use std::marker::PhantomData;
 
 pub struct Srv {
     pd: PhantomData<i32>,
diff --git a/src/system/mod.rs b/src/system/mod.rs
deleted file mode 100644
index 637a484..0000000
--- a/src/system/mod.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-pub mod ascii;
-pub mod error;
-pub mod ffi;
-pub mod io;
-pub mod memchr;
-pub mod panicking;
-pub mod path;
-pub mod rt;
-mod sys;
diff --git a/src/system/rt.rs b/src/system/rt.rs
deleted file mode 100644
index e9514f5..0000000
--- a/src/system/rt.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-use std::mem;
-
-//TODO: Handle argc/argv arguments
-#[lang = "start"]
-#[allow(unused_variables)]
-fn lang_start(main: *const u8, argc: isize, argv: *const *const u8) -> isize {
-    unsafe { mem::transmute::<_, fn()>(main)(); }
-    0
-}
diff --git a/std/Cargo.toml b/std/Cargo.toml
new file mode 100644
index 0000000..fbb4ed2
--- /dev/null
+++ b/std/Cargo.toml
@@ -0,0 +1,17 @@
+[package]
+name = "std"
+version = "0.0.0"
+authors = ["Ronald Kinard <[email protected]>"]
+license = "https://en.wikipedia.org/wiki/Zlib_License"
+
+[lib]
+crate-type = ["rlib"]
+
+[dependencies.alloc_system3ds]
+git = "https://github.com/rust3ds/alloc_system3ds"
+
+[dependencies.ctru-sys]
+path = "../ctru-sys"
+
+[dependencies.spin]
+version = "0.4"
diff --git a/src/system/ascii.rs b/std/src/ascii.rs
index 93f447b..277d82a 100644
--- a/src/system/ascii.rs
+++ b/std/src/ascii.rs
@@ -10,9 +10,8 @@
 
 //! Operations on ASCII strings and characters.
 
-use core::mem;
-use core::ops::Range;
-use collections::{String, Vec};
+use mem;
+use ops::Range;
 
 /// Extension methods for ASCII-subset only operations on string slices.
 ///
diff --git a/src/system/error.rs b/std/src/error.rs
index b5aef1e..5beae2f 100644
--- a/src/system/error.rs
+++ b/std/src/error.rs
@@ -49,15 +49,14 @@
 // coherence challenge (e.g., specialization, neg impls, etc) we can
 // reconsider what crate these items belong in.
 
-use core::any::TypeId;
-use core::cell;
-use rustc_unicode::char;
-use core::fmt::{self, Debug, Display};
-use core::mem::transmute;
-use core::num;
-use core::str;
-use collections::string::{self, String};
-use alloc::boxed::Box;
+use any::TypeId;
+use cell;
+use char;
+use fmt::{self, Debug, Display};
+use mem::transmute;
+use num;
+use str;
+use string;
 
 /// Base functionality for all errors in Rust.
 pub trait Error: Debug + Display {
diff --git a/src/system/ffi/c_str.rs b/std/src/ffi/c_str.rs
index 67d37d8..159c683 100644
--- a/src/system/ffi/c_str.rs
+++ b/std/src/ffi/c_str.rs
@@ -8,19 +8,19 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::ascii;
-use std::borrow::{Cow, Borrow};
-use std::cmp::Ordering;
-use std::error::Error;
-use std::fmt::{self, Write};
-use std::io;
+use ascii;
+use borrow::{Cow, Borrow};
+use cmp::Ordering;
+use error::Error;
+use fmt::{self, Write};
+use io;
 use libctru::libc::{self, c_char};
-use std::mem;
-use system::memchr;
-use std::ops;
-use std::ptr;
-use std::slice;
-use std::str::{self, Utf8Error};
+use mem;
+use memchr;
+use ops;
+use ptr;
+use slice;
+use str::{self, Utf8Error};
 
 /// A type representing an owned C-compatible string
 ///
diff --git a/src/system/ffi/mod.rs b/std/src/ffi/mod.rs
index d4ed3a7..d4ed3a7 100644
--- a/src/system/ffi/mod.rs
+++ b/std/src/ffi/mod.rs
diff --git a/src/system/ffi/os_str.rs b/std/src/ffi/os_str.rs
index 6c0ff5e..651eaf3 100644
--- a/src/system/ffi/os_str.rs
+++ b/std/src/ffi/os_str.rs
@@ -8,16 +8,16 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::borrow::{Borrow, Cow};
-use std::fmt::{self, Debug};
-use std::mem;
-use std::ops;
-use std::cmp;
-use std::hash::{Hash, Hasher};
-
-use system::sys::wtf8::{Wtf8, Wtf8Buf};
-use system::sys::{AsInner, IntoInner, FromInner};
-pub use system::sys::wtf8::EncodeWide;
+use borrow::{Borrow, Cow};
+use fmt::{self, Debug};
+use mem;
+use ops;
+use cmp;
+use hash::{Hash, Hasher};
+
+use sys::wtf8::{Wtf8, Wtf8Buf};
+use sys::{AsInner, IntoInner, FromInner};
+pub use sys::wtf8::EncodeWide;
 
 /// A type that can represent owned, mutable platform-native strings, but is
 /// cheaply inter-convertible with Rust strings.
diff --git a/src/system/io/buffered.rs b/std/src/io/buffered.rs
index 22588fc..39733f2 100644
--- a/src/system/io/buffered.rs
+++ b/std/src/io/buffered.rs
@@ -10,13 +10,13 @@
 
 //! Buffering wrappers for I/O traits
 
-use std::io::prelude::*;
+use io::prelude::*;
 
-use std::cmp;
-use std::error;
-use std::fmt;
-use std::io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom};
-use std::memchr;
+use cmp;
+use error;
+use fmt;
+use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom};
+use memchr;
 
 /// The `BufReader` struct adds buffering to any reader.
 ///
diff --git a/src/system/io/cursor.rs b/std/src/io/cursor.rs
index 99d4115..befbf14 100644
--- a/src/system/io/cursor.rs
+++ b/std/src/io/cursor.rs
@@ -8,10 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::io::prelude::*;
+use io::prelude::*;
 
-use std::cmp;
-use std::io::{self, SeekFrom, Error, ErrorKind};
+use cmp;
+use io::{self, SeekFrom, Error, ErrorKind};
 
 /// A `Cursor` wraps another type and provides it with a
 /// [`Seek`](trait.Seek.html) implementation.
diff --git a/src/system/io/error.rs b/std/src/io/error.rs
index 4b99e7a..bc05469 100644
--- a/src/system/io/error.rs
+++ b/std/src/io/error.rs
@@ -9,9 +9,9 @@
 // except according to those terms.
 
 
-use std::error;
-use std::fmt;
-use std::result;
+use error;
+use fmt;
+use result;
 
 /// A specialized [`Result`](../result/enum.Result.html) type for I/O
 /// operations.
diff --git a/src/system/io/impls.rs b/std/src/io/impls.rs
index fc39a50..360e734 100644
--- a/src/system/io/impls.rs
+++ b/std/src/io/impls.rs
@@ -8,10 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::cmp;
-use std::io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind};
-use std::fmt;
-use std::mem;
+use cmp;
+use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind};
+use fmt;
+use mem;
 
 // =============================================================================
 // Forwarding implementations
diff --git a/src/system/io/mod.rs b/std/src/io/mod.rs
index 0551836..3e43a44 100644
--- a/src/system/io/mod.rs
+++ b/std/src/io/mod.rs
@@ -247,19 +247,20 @@
 //! contract. The implementation of many of these functions are subject to change over
 //! time and may call fewer or more syscalls/library functions.
 
-use std::cmp;
+use cmp;
 use rustc_unicode::str as core_str;
-use std::error as std_error;
-use std::fmt;
-use std::result;
-use std::str;
-use std::memchr;
+use error as std_error;
+use fmt;
+use result;
+use str;
+use memchr;
 
 pub use self::buffered::{BufReader, BufWriter, LineWriter};
 pub use self::buffered::IntoInnerError;
 pub use self::cursor::Cursor;
 pub use self::error::{Result, Error, ErrorKind};
 pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat};
+pub use self::print::{STDOUT, _print};
 
 //pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr};
 //pub use self::stdio::{StdoutLock, StderrLock, StdinLock};
@@ -272,6 +273,7 @@ mod cursor;
 mod error;
 mod impls;
 mod util;
+mod print;
 
 //mod lazy;
 //mod stdio;
diff --git a/src/system/io/prelude.rs b/std/src/io/prelude.rs
index 8f209e5..8f209e5 100644
--- a/src/system/io/prelude.rs
+++ b/std/src/io/prelude.rs
diff --git a/std/src/io/print.rs b/std/src/io/print.rs
new file mode 100644
index 0000000..2940f35
--- /dev/null
+++ b/std/src/io/print.rs
@@ -0,0 +1,32 @@
+use fmt;
+use io::{self, Write};
+
+// NOTE: We're just gonna use the spin mutex until we figure out how to properly
+// implement mutexes with ctrulib functions
+use spin::Mutex;
+use libctru::libc;
+
+pub static STDOUT: Mutex<StdoutRaw> = Mutex::new(StdoutRaw(()));
+
+pub struct StdoutRaw(());
+
+impl Write for StdoutRaw {
+    fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
+        unsafe {
+            // devkitPro's version of write(2) fails if zero bytes are written,
+            // so let's just exit if the buffer size is zero
+            if buf.is_empty() {
+                return Ok(buf.len())
+            }
+            libc::write(libc::STDOUT_FILENO, buf.as_ptr() as *const _, buf.len());
+            Ok(buf.len())
+        }
+    }
+
+    fn flush(&mut self) -> io::Result<()> { Ok(()) }
+}
+
+#[doc(hidden)]
+pub fn _print(args: fmt::Arguments) {
+    STDOUT.lock().write_fmt(args).unwrap();
+}
diff --git a/src/system/io/util.rs b/std/src/io/util.rs
index 7b24cd4..1bcc5a6 100644
--- a/src/system/io/util.rs
+++ b/std/src/io/util.rs
@@ -10,7 +10,7 @@
 
 #![allow(missing_copy_implementations)]
 
-use std::io::{self, Read, Write, ErrorKind, BufRead};
+use io::{self, Read, Write, ErrorKind, BufRead};
 
 /// Copies the entire contents of a reader into a writer.
 ///
diff --git a/std/src/lib.rs b/std/src/lib.rs
new file mode 100644
index 0000000..5f1b438
--- /dev/null
+++ b/std/src/lib.rs
@@ -0,0 +1,100 @@
+#![feature(alloc)]
+#![feature(allow_internal_unstable)]
+#![feature(collections)]
+#![feature(const_fn)]
+#![feature(core_intrinsics)]
+#![feature(char_escape_debug)]
+#![feature(float_extras)]
+#![feature(int_error_internals)]
+#![feature(lang_items)]
+#![feature(macro_reexport)]
+#![feature(optin_builtin_traits)]
+#![feature(prelude_import)]
+#![feature(raw)]
+#![feature(slice_concat_ext)]
+#![feature(slice_patterns)]
+#![feature(str_internals)]
+#![feature(try_from)]
+#![feature(unicode)]
+#![feature(zero_one)]
+#![allow(non_camel_case_types)]
+#![no_std]
+
+#[prelude_import]
+#[allow(unused)]
+use prelude::v1::*; 
+#[macro_reexport(assert, assert_eq, debug_assert, debug_assert_eq,
+                 unreachable, unimplemented, write, writeln)]
+extern crate core as __core;
+#[macro_use]
+#[macro_reexport(vec, format)]
+extern crate collections as core_collections;
+extern crate alloc;
+extern crate rustc_unicode;
+
+extern crate alloc_system;
+
+extern crate ctru_sys as libctru;
+extern crate spin;
+
+pub use core::any;
+pub use core::cell;
+pub use core::clone;
+pub use core::cmp;
+pub use core::convert;
+pub use core::default;
+pub use core::hash;
+pub use core::intrinsics;
+pub use core::iter;
+pub use core::marker;
+pub use core::mem;
+pub use core::ops;
+pub use core::ptr;
+pub use core::raw;
+pub use core::result;
+pub use core::option;
+
+pub use alloc::arc;
+pub use alloc::boxed;
+pub use alloc::rc;
+
+pub use core_collections::borrow;
+pub use core_collections::fmt;
+pub use core_collections::slice;
+pub use core_collections::str;
+pub use core_collections::string;
+pub use core_collections::vec;
+
+pub use rustc_unicode::char;
+
+#[macro_use]
+pub mod macros;
+
+pub mod prelude;
+
+pub use core::isize;
+pub use core::i8;
+pub use core::i16;
+pub use core::i32;
+pub use core::i64;
+
+pub use core::usize;
+pub use core::u8;
+pub use core::u16;
+pub use core::u32;
+pub use core::u64;
+
+#[path = "num/f32.rs"] pub mod f32;
+#[path = "num/f64.rs"] pub mod f64;
+
+pub mod ascii;
+pub mod error;
+pub mod ffi;
+pub mod io;
+pub mod num;
+pub mod path;
+pub mod rt;
+pub mod sync;
+mod memchr;
+mod panicking;
+mod sys;
diff --git a/std/src/macros.rs b/std/src/macros.rs
new file mode 100644
index 0000000..a9b4336
--- /dev/null
+++ b/std/src/macros.rs
@@ -0,0 +1,394 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+/// The entry point for panic of Rust threads.
+///
+/// This macro is used to inject panic into a Rust thread, causing the thread to
+/// panic entirely. Each thread's panic can be reaped as the `Box<Any>` type,
+/// and the single-argument form of the `panic!` macro will be the value which
+/// is transmitted.
+///
+/// The multi-argument form of this macro panics with a string and has the
+/// `format!` syntax for building a string.
+///
+/// # Examples
+///
+/// ```should_panic
+/// # #![allow(unreachable_code)]
+/// panic!();
+/// panic!("this is a terrible mistake!");
+/// panic!(4); // panic with the value of 4 to be collected elsewhere
+/// panic!("this is a {} {message}", "fancy", message = "message");
+/// ```
+#[macro_export]
+#[allow_internal_unstable]
+macro_rules! panic {
+    () => ({
+        panic!("explicit panic")
+    });
+    ($msg:expr) => ({
+        $crate::rt::begin_panic($msg, {
+            // static requires less code at runtime, more constant data
+            static _FILE_LINE: (&'static str, u32) = (file!(), line!());
+            &_FILE_LINE
+        })
+    });
+    ($fmt:expr, $($arg:tt)+) => ({
+        $crate::rt::begin_panic_fmt(&format_args!($fmt, $($arg)+), {
+            // The leading _'s are to avoid dead code warnings if this is
+            // used inside a dead function. Just `#[allow(dead_code)]` is
+            // insufficient, since the user may have
+            // `#[forbid(dead_code)]` and which cannot be overridden.
+            static _FILE_LINE: (&'static str, u32) = (file!(), line!());
+            &_FILE_LINE
+        })
+    });
+}
+
+/// Ensure that a boolean expression is `true` at runtime.
+///
+/// This will invoke the `panic!` macro if the provided expression cannot be
+/// evaluated to `true` at runtime.
+///
+/// This macro has a second version, where a custom panic message can be provided.
+///
+/// # Examples
+///
+/// ```
+/// // the panic message for these assertions is the stringified value of the
+/// // expression given.
+/// assert!(true);
+///
+/// fn some_computation() -> bool { true } // a very simple function
+///
+/// assert!(some_computation());
+///
+/// // assert with a custom message
+/// let x = true;
+/// assert!(x, "x wasn't true!");
+///
+/// let a = 3; let b = 27;
+/// assert!(a + b == 30, "a = {}, b = {}", a, b);
+/// ```
+#[macro_export]
+macro_rules! assert {
+    ($cond:expr) => (
+        if !$cond {
+            panic!(concat!("assertion failed: ", stringify!($cond)))
+        }
+    );
+    ($cond:expr, $($arg:tt)+) => (
+        if !$cond {
+            panic!($($arg)+)
+        }
+    );
+}
+
+/// Asserts that two expressions are equal to each other.
+///
+/// On panic, this macro will print the values of the expressions with their
+/// debug representations.
+///
+/// # Examples
+///
+/// ```
+/// let a = 3;
+/// let b = 1 + 2;
+/// assert_eq!(a, b);
+/// ```
+#[macro_export]
+macro_rules! assert_eq {
+    ($left:expr , $right:expr) => ({
+        match (&$left, &$right) {
+            (left_val, right_val) => {
+                if !(*left_val == *right_val) {
+                    panic!("assertion failed: `(left == right)` \
+                           (left: `{:?}`, right: `{:?}`)", left_val, right_val)
+                }
+            }
+        }
+    })
+}
+
+/// Ensure that a boolean expression is `true` at runtime.
+///
+/// This will invoke the `panic!` macro if the provided expression cannot be
+/// evaluated to `true` at runtime.
+///
+/// Like `assert!`, this macro also has a second version, where a custom panic
+/// message can be provided.
+///
+/// Unlike `assert!`, `debug_assert!` statements are only enabled in non
+/// optimized builds by default. An optimized build will omit all
+/// `debug_assert!` statements unless `-C debug-assertions` is passed to the
+/// compiler. This makes `debug_assert!` useful for checks that are too
+/// expensive to be present in a release build but may be helpful during
+/// development.
+///
+/// # Examples
+///
+/// ```
+/// // the panic message for these assertions is the stringified value of the
+/// // expression given.
+/// debug_assert!(true);
+///
+/// fn some_expensive_computation() -> bool { true } // a very simple function
+/// debug_assert!(some_expensive_computation());
+///
+/// // assert with a custom message
+/// let x = true;
+/// debug_assert!(x, "x wasn't true!");
+///
+/// let a = 3; let b = 27;
+/// debug_assert!(a + b == 30, "a = {}, b = {}", a, b);
+/// ```
+#[macro_export]
+macro_rules! debug_assert {
+    ($($arg:tt)*) => (if cfg!(debug_assertions) { assert!($($arg)*); })
+}
+
+/// Asserts that two expressions are equal to each other.
+///
+/// On panic, this macro will print the values of the expressions with their
+/// debug representations.
+///
+/// Unlike `assert_eq!`, `debug_assert_eq!` statements are only enabled in non
+/// optimized builds by default. An optimized build will omit all
+/// `debug_assert_eq!` statements unless `-C debug-assertions` is passed to the
+/// compiler. This makes `debug_assert_eq!` useful for checks that are too
+/// expensive to be present in a release build but may be helpful during
+/// development.
+///
+/// # Examples
+///
+/// ```
+/// let a = 3;
+/// let b = 1 + 2;
+/// debug_assert_eq!(a, b);
+/// ```
+#[macro_export]
+macro_rules! debug_assert_eq {
+    ($($arg:tt)*) => (if cfg!(debug_assertions) { assert_eq!($($arg)*); })
+}
+
+/// Helper macro for unwrapping `Result` values while returning early with an
+/// error if the value of the expression is `Err`. Can only be used in
+/// functions that return `Result` because of the early return of `Err` that
+/// it provides.
+///
+/// # Examples
+///
+/// ```
+/// use std::io;
+/// use std::fs::File;
+/// use std::io::prelude::*;
+///
+/// fn write_to_file_using_try() -> Result<(), io::Error> {
+///     let mut file = try!(File::create("my_best_friends.txt"));
+///     try!(file.write_all(b"This is a list of my best friends."));
+///     println!("I wrote to the file");
+///     Ok(())
+/// }
+/// // This is equivalent to:
+/// fn write_to_file_using_match() -> Result<(), io::Error> {
+///     let mut file = try!(File::create("my_best_friends.txt"));
+///     match file.write_all(b"This is a list of my best friends.") {
+///         Ok(v) => v,
+///         Err(e) => return Err(e),
+///     }
+///     println!("I wrote to the file");
+///     Ok(())
+/// }
+/// ```
+#[macro_export]
+macro_rules! try {
+    ($expr:expr) => (match $expr {
+        $crate::result::Result::Ok(val) => val,
+        $crate::result::Result::Err(err) => {
+            return $crate::result::Result::Err($crate::convert::From::from(err))
+        }
+    })
+}
+
+/// Use the `format!` syntax to write data into a buffer.
+///
+/// This macro is typically used with a buffer of `&mut `[`Write`][write].
+///
+/// See [`std::fmt`][fmt] for more information on format syntax.
+///
+/// [fmt]: ../std/fmt/index.html
+/// [write]: ../std/io/trait.Write.html
+///
+/// # Examples
+///
+/// ```
+/// use std::io::Write;
+///
+/// let mut w = Vec::new();
+/// write!(&mut w, "test").unwrap();
+/// write!(&mut w, "formatted {}", "arguments").unwrap();
+///
+/// assert_eq!(w, b"testformatted arguments");
+/// ```
+#[macro_export]
+macro_rules! write {
+    ($dst:expr, $($arg:tt)*) => ($dst.write_fmt(format_args!($($arg)*)))
+}
+
+/// Use the `format!` syntax to write data into a buffer, appending a newline.
+///
+/// This macro is typically used with a buffer of `&mut `[`Write`][write].
+///
+/// See [`std::fmt`][fmt] for more information on format syntax.
+///
+/// [fmt]: ../std/fmt/index.html
+/// [write]: ../std/io/trait.Write.html
+///
+/// # Examples
+///
+/// ```
+/// use std::io::Write;
+///
+/// let mut w = Vec::new();
+/// writeln!(&mut w, "test").unwrap();
+/// writeln!(&mut w, "formatted {}", "arguments").unwrap();
+///
+/// assert_eq!(&w[..], "test\nformatted arguments\n".as_bytes());
+/// ```
+#[macro_export]
+macro_rules! writeln {
+    ($dst:expr, $fmt:expr) => (
+        write!($dst, concat!($fmt, "\n"))
+    );
+    ($dst:expr, $fmt:expr, $($arg:tt)*) => (
+        write!($dst, concat!($fmt, "\n"), $($arg)*)
+    );
+}
+
+/// A utility macro for indicating unreachable code.
+///
+/// This is useful any time that the compiler can't determine that some code is unreachable. For
+/// example:
+///
+/// * Match arms with guard conditions.
+/// * Loops that dynamically terminate.
+/// * Iterators that dynamically terminate.
+///
+/// # Panics
+///
+/// This will always panic.
+///
+/// # Examples
+///
+/// Match arms:
+///
+/// ```
+/// # #[allow(dead_code)]
+/// fn foo(x: Option<i32>) {
+///     match x {
+///         Some(n) if n >= 0 => println!("Some(Non-negative)"),
+///         Some(n) if n <  0 => println!("Some(Negative)"),
+///         Some(_)           => unreachable!(), // compile error if commented out
+///         None              => println!("None")
+///     }
+/// }
+/// ```
+///
+/// Iterators:
+///
+/// ```
+/// # #[allow(dead_code)]
+/// fn divide_by_three(x: u32) -> u32 { // one of the poorest implementations of x/3
+///     for i in 0.. {
+///         if 3*i < i { panic!("u32 overflow"); }
+///         if x < 3*i { return i-1; }
+///     }
+///     unreachable!();
+/// }
+/// ```
+#[macro_export]
+macro_rules! unreachable {
+    () => ({
+        panic!("internal error: entered unreachable code")
+    });
+    ($msg:expr) => ({
+        unreachable!("{}", $msg)
+    });
+    ($fmt:expr, $($arg:tt)*) => ({
+        panic!(concat!("internal error: entered unreachable code: ", $fmt), $($arg)*)
+    });
+}
+
+/// A standardized placeholder for marking unfinished code. It panics with the
+/// message `"not yet implemented"` when executed.
+///
+/// This can be useful if you are prototyping and are just looking to have your
+/// code typecheck, or if you're implementing a trait that requires multiple
+/// methods, and you're only planning on using one of them.
+///
+/// # Examples
+///
+/// Here's an example of some in-progress code. We have a trait `Foo`:
+///
+/// ```
+/// trait Foo {
+///     fn bar(&self);
+///     fn baz(&self);
+/// }
+/// ```
+///
+/// We want to implement `Foo` on one of our types, but we also want to work on
+/// just `bar()` first. In order for our code to compile, we need to implement
+/// `baz()`, so we can use `unimplemented!`:
+///
+/// ```
+/// # trait Foo {
+/// #     fn bar(&self);
+/// #     fn baz(&self);
+/// # }
+/// struct MyStruct;
+///
+/// impl Foo for MyStruct {
+///     fn bar(&self) {
+///         // implementation goes here
+///     }
+///
+///     fn baz(&self) {
+///         // let's not worry about implementing baz() for now
+///         unimplemented!();
+///     }
+/// }
+///
+/// fn main() {
+///     let s = MyStruct;
+///     s.bar();
+///
+///     // we aren't even using baz() yet, so this is fine.
+/// }
+/// ```
+#[macro_export]
+macro_rules! unimplemented {
+    () => (panic!("not yet implemented"))
+}
+
+#[macro_export]
+#[allow_internal_unstable]
+macro_rules! print {
+    ($($arg:tt)*) => (
+        $crate::io::_print(format_args!($($arg)*));
+    );
+}
+
+#[macro_export]
+macro_rules! println {
+    () => (print!("\n"));
+    ($fmt:expr) => (print!(concat!($fmt, "\n")));
+    ($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
+}
diff --git a/src/system/memchr.rs b/std/src/memchr.rs
index 210ba80..210ba80 100644
--- a/src/system/memchr.rs
+++ b/std/src/memchr.rs
diff --git a/std/src/num/f32.rs b/std/src/num/f32.rs
new file mode 100644
index 0000000..f1cfe5a
--- /dev/null
+++ b/std/src/num/f32.rs
@@ -0,0 +1,1826 @@
+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! The 32-bit floating point type.
+//!
+//! *[See also the `f32` primitive type](../primitive.f32.html).*
+
+#![allow(missing_docs)]
+
+#[cfg(not(test))]
+use core::num;
+#[cfg(not(test))]
+use intrinsics;
+#[cfg(not(test))]
+use libctru::libc::c_int;
+#[cfg(not(test))]
+use num::FpCategory;
+
+
+pub use core::f32::{RADIX, MANTISSA_DIGITS, DIGITS, EPSILON};
+pub use core::f32::{MIN_EXP, MAX_EXP, MIN_10_EXP};
+pub use core::f32::{MAX_10_EXP, NAN, INFINITY, NEG_INFINITY};
+pub use core::f32::{MIN, MIN_POSITIVE, MAX};
+pub use core::f32::consts;
+
+#[allow(dead_code)]
+mod cmath {
+    use libctru::libc::{c_float, c_int};
+
+    extern "C" {
+        pub fn cbrtf(n: c_float) -> c_float;
+        pub fn erff(n: c_float) -> c_float;
+        pub fn erfcf(n: c_float) -> c_float;
+        pub fn expm1f(n: c_float) -> c_float;
+        pub fn fdimf(a: c_float, b: c_float) -> c_float;
+        pub fn fmaxf(a: c_float, b: c_float) -> c_float;
+        pub fn fminf(a: c_float, b: c_float) -> c_float;
+        pub fn fmodf(a: c_float, b: c_float) -> c_float;
+        pub fn ilogbf(n: c_float) -> c_int;
+        pub fn logbf(n: c_float) -> c_float;
+        pub fn log1pf(n: c_float) -> c_float;
+        pub fn modff(n: c_float, iptr: &mut c_float) -> c_float;
+        pub fn nextafterf(x: c_float, y: c_float) -> c_float;
+        pub fn tgammaf(n: c_float) -> c_float;
+
+        #[cfg_attr(all(windows, target_env = "msvc"), link_name = "__lgammaf_r")]
+        pub fn lgammaf_r(n: c_float, sign: &mut c_int) -> c_float;
+        #[cfg_attr(all(windows, target_env = "msvc"), link_name = "_hypotf")]
+        pub fn hypotf(x: c_float, y: c_float) -> c_float;
+    }
+
+    // See the comments in the `floor` function for why MSVC is special
+    // here.
+    #[cfg(not(target_env = "msvc"))]
+    extern "C" {
+        pub fn acosf(n: c_float) -> c_float;
+        pub fn asinf(n: c_float) -> c_float;
+        pub fn atan2f(a: c_float, b: c_float) -> c_float;
+        pub fn atanf(n: c_float) -> c_float;
+        pub fn coshf(n: c_float) -> c_float;
+        pub fn frexpf(n: c_float, value: &mut c_int) -> c_float;
+        pub fn ldexpf(x: c_float, n: c_int) -> c_float;
+        pub fn sinhf(n: c_float) -> c_float;
+        pub fn tanf(n: c_float) -> c_float;
+        pub fn tanhf(n: c_float) -> c_float;
+    }
+
+    #[cfg(target_env = "msvc")]
+    pub use self::shims::*;
+    #[cfg(target_env = "msvc")]
+    mod shims {
+        use libctru::libc::{c_float, c_int};
+
+        #[inline]
+        pub unsafe fn acosf(n: c_float) -> c_float {
+            f64::acos(n as f64) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn asinf(n: c_float) -> c_float {
+            f64::asin(n as f64) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn atan2f(n: c_float, b: c_float) -> c_float {
+            f64::atan2(n as f64, b as f64) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn atanf(n: c_float) -> c_float {
+            f64::atan(n as f64) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn coshf(n: c_float) -> c_float {
+            f64::cosh(n as f64) as c_float
+        }
+
+        #[inline]
+        #[allow(deprecated)]
+        pub unsafe fn frexpf(x: c_float, value: &mut c_int) -> c_float {
+            let (a, b) = f64::frexp(x as f64);
+            *value = b as c_int;
+            a as c_float
+        }
+
+        #[inline]
+        #[allow(deprecated)]
+        pub unsafe fn ldexpf(x: c_float, n: c_int) -> c_float {
+            f64::ldexp(x as f64, n as isize) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn sinhf(n: c_float) -> c_float {
+            f64::sinh(n as f64) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn tanf(n: c_float) -> c_float {
+            f64::tan(n as f64) as c_float
+        }
+
+        #[inline]
+        pub unsafe fn tanhf(n: c_float) -> c_float {
+            f64::tanh(n as f64) as c_float
+        }
+    }
+}
+
+#[cfg(not(test))]
+#[lang = "f32"]
+impl f32 {
+    /// Returns `true` if this value is `NaN` and false otherwise.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let nan = f32::NAN;
+    /// let f = 7.0_f32;
+    ///
+    /// assert!(nan.is_nan());
+    /// assert!(!f.is_nan());
+    /// ```
+    #[inline]
+    pub fn is_nan(self) -> bool {
+        num::Float::is_nan(self)
+    }
+
+    /// Returns `true` if this value is positive infinity or negative infinity and
+    /// false otherwise.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = 7.0f32;
+    /// let inf = f32::INFINITY;
+    /// let neg_inf = f32::NEG_INFINITY;
+    /// let nan = f32::NAN;
+    ///
+    /// assert!(!f.is_infinite());
+    /// assert!(!nan.is_infinite());
+    ///
+    /// assert!(inf.is_infinite());
+    /// assert!(neg_inf.is_infinite());
+    /// ```
+    #[inline]
+    pub fn is_infinite(self) -> bool {
+        num::Float::is_infinite(self)
+    }
+
+    /// Returns `true` if this number is neither infinite nor `NaN`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = 7.0f32;
+    /// let inf = f32::INFINITY;
+    /// let neg_inf = f32::NEG_INFINITY;
+    /// let nan = f32::NAN;
+    ///
+    /// assert!(f.is_finite());
+    ///
+    /// assert!(!nan.is_finite());
+    /// assert!(!inf.is_finite());
+    /// assert!(!neg_inf.is_finite());
+    /// ```
+    #[inline]
+    pub fn is_finite(self) -> bool {
+        num::Float::is_finite(self)
+    }
+
+    /// Returns `true` if the number is neither zero, infinite,
+    /// [subnormal][subnormal], or `NaN`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let min = f32::MIN_POSITIVE; // 1.17549435e-38f32
+    /// let max = f32::MAX;
+    /// let lower_than_min = 1.0e-40_f32;
+    /// let zero = 0.0_f32;
+    ///
+    /// assert!(min.is_normal());
+    /// assert!(max.is_normal());
+    ///
+    /// assert!(!zero.is_normal());
+    /// assert!(!f32::NAN.is_normal());
+    /// assert!(!f32::INFINITY.is_normal());
+    /// // Values between `0` and `min` are Subnormal.
+    /// assert!(!lower_than_min.is_normal());
+    /// ```
+    /// [subnormal]: https://en.wikipedia.org/wiki/Denormal_number
+    #[inline]
+    pub fn is_normal(self) -> bool {
+        num::Float::is_normal(self)
+    }
+
+    /// Returns the floating point category of the number. If only one property
+    /// is going to be tested, it is generally faster to use the specific
+    /// predicate instead.
+    ///
+    /// ```
+    /// use std::num::FpCategory;
+    /// use std::f32;
+    ///
+    /// let num = 12.4_f32;
+    /// let inf = f32::INFINITY;
+    ///
+    /// assert_eq!(num.classify(), FpCategory::Normal);
+    /// assert_eq!(inf.classify(), FpCategory::Infinite);
+    /// ```
+    #[inline]
+    pub fn classify(self) -> FpCategory {
+        num::Float::classify(self)
+    }
+
+    /// Returns the mantissa, base 2 exponent, and sign as integers, respectively.
+    /// The original number can be recovered by `sign * mantissa * 2 ^ exponent`.
+    /// The floating point encoding is documented in the [Reference][floating-point].
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// use std::f32;
+    ///
+    /// let num = 2.0f32;
+    ///
+    /// // (8388608, -22, 1)
+    /// let (mantissa, exponent, sign) = num.integer_decode();
+    /// let sign_f = sign as f32;
+    /// let mantissa_f = mantissa as f32;
+    /// let exponent_f = num.powf(exponent as f32);
+    ///
+    /// // 1 * 8388608 * 2^(-22) == 2
+    /// let abs_difference = (sign_f * mantissa_f * exponent_f - num).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    /// [floating-point]: ../reference.html#machine-types
+    #[inline]
+    #[allow(deprecated)]
+    pub fn integer_decode(self) -> (u64, i16, i8) {
+        num::Float::integer_decode(self)
+    }
+
+    /// Returns the largest integer less than or equal to a number.
+    ///
+    /// ```
+    /// let f = 3.99_f32;
+    /// let g = 3.0_f32;
+    ///
+    /// assert_eq!(f.floor(), 3.0);
+    /// assert_eq!(g.floor(), 3.0);
+    /// ```
+    #[inline]
+    pub fn floor(self) -> f32 {
+        // On MSVC LLVM will lower many math intrinsics to a call to the
+        // corresponding function. On MSVC, however, many of these functions
+        // aren't actually available as symbols to call, but rather they are all
+        // `static inline` functions in header files. This means that from a C
+        // perspective it's "compatible", but not so much from an ABI
+        // perspective (which we're worried about).
+        //
+        // The inline header functions always just cast to a f64 and do their
+        // operation, so we do that here as well, but only for MSVC targets.
+        //
+        // Note that there are many MSVC-specific float operations which
+        // redirect to this comment, so `floorf` is just one case of a missing
+        // function on MSVC, but there are many others elsewhere.
+        #[cfg(target_env = "msvc")]
+        return (self as f64).floor() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::floorf32(self) };
+    }
+
+    /// Returns the smallest integer greater than or equal to a number.
+    ///
+    /// ```
+    /// let f = 3.01_f32;
+    /// let g = 4.0_f32;
+    ///
+    /// assert_eq!(f.ceil(), 4.0);
+    /// assert_eq!(g.ceil(), 4.0);
+    /// ```
+    #[inline]
+    pub fn ceil(self) -> f32 {
+        // see notes above in `floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).ceil() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::ceilf32(self) };
+    }
+
+    /// Returns the nearest integer to a number. Round half-way cases away from
+    /// `0.0`.
+    ///
+    /// ```
+    /// let f = 3.3_f32;
+    /// let g = -3.3_f32;
+    ///
+    /// assert_eq!(f.round(), 3.0);
+    /// assert_eq!(g.round(), -3.0);
+    /// ```
+    #[inline]
+    pub fn round(self) -> f32 {
+        unsafe { intrinsics::roundf32(self) }
+    }
+
+    /// Returns the integer part of a number.
+    ///
+    /// ```
+    /// let f = 3.3_f32;
+    /// let g = -3.7_f32;
+    ///
+    /// assert_eq!(f.trunc(), 3.0);
+    /// assert_eq!(g.trunc(), -3.0);
+    /// ```
+    #[inline]
+    pub fn trunc(self) -> f32 {
+        unsafe { intrinsics::truncf32(self) }
+    }
+
+    /// Returns the fractional part of a number.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 3.5_f32;
+    /// let y = -3.5_f32;
+    /// let abs_difference_x = (x.fract() - 0.5).abs();
+    /// let abs_difference_y = (y.fract() - (-0.5)).abs();
+    ///
+    /// assert!(abs_difference_x <= f32::EPSILON);
+    /// assert!(abs_difference_y <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn fract(self) -> f32 {
+        self - self.trunc()
+    }
+
+    /// Computes the absolute value of `self`. Returns `NAN` if the
+    /// number is `NAN`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 3.5_f32;
+    /// let y = -3.5_f32;
+    ///
+    /// let abs_difference_x = (x.abs() - x).abs();
+    /// let abs_difference_y = (y.abs() - (-y)).abs();
+    ///
+    /// assert!(abs_difference_x <= f32::EPSILON);
+    /// assert!(abs_difference_y <= f32::EPSILON);
+    ///
+    /// assert!(f32::NAN.abs().is_nan());
+    /// ```
+    #[inline]
+    pub fn abs(self) -> f32 {
+        num::Float::abs(self)
+    }
+
+    /// Returns a number that represents the sign of `self`.
+    ///
+    /// - `1.0` if the number is positive, `+0.0` or `INFINITY`
+    /// - `-1.0` if the number is negative, `-0.0` or `NEG_INFINITY`
+    /// - `NAN` if the number is `NAN`
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = 3.5_f32;
+    ///
+    /// assert_eq!(f.signum(), 1.0);
+    /// assert_eq!(f32::NEG_INFINITY.signum(), -1.0);
+    ///
+    /// assert!(f32::NAN.signum().is_nan());
+    /// ```
+    #[inline]
+    pub fn signum(self) -> f32 {
+        num::Float::signum(self)
+    }
+
+    /// Returns `true` if `self`'s sign bit is positive, including
+    /// `+0.0` and `INFINITY`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let nan = f32::NAN;
+    /// let f = 7.0_f32;
+    /// let g = -7.0_f32;
+    ///
+    /// assert!(f.is_sign_positive());
+    /// assert!(!g.is_sign_positive());
+    /// // Requires both tests to determine if is `NaN`
+    /// assert!(!nan.is_sign_positive() && !nan.is_sign_negative());
+    /// ```
+    #[inline]
+    pub fn is_sign_positive(self) -> bool {
+        num::Float::is_sign_positive(self)
+    }
+
+    /// Returns `true` if `self`'s sign is negative, including `-0.0`
+    /// and `NEG_INFINITY`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let nan = f32::NAN;
+    /// let f = 7.0f32;
+    /// let g = -7.0f32;
+    ///
+    /// assert!(!f.is_sign_negative());
+    /// assert!(g.is_sign_negative());
+    /// // Requires both tests to determine if is `NaN`.
+    /// assert!(!nan.is_sign_positive() && !nan.is_sign_negative());
+    /// ```
+    #[inline]
+    pub fn is_sign_negative(self) -> bool {
+        num::Float::is_sign_negative(self)
+    }
+
+    /// Fused multiply-add. Computes `(self * a) + b` with only one rounding
+    /// error. This produces a more accurate result with better performance than
+    /// a separate multiplication operation followed by an add.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let m = 10.0_f32;
+    /// let x = 4.0_f32;
+    /// let b = 60.0_f32;
+    ///
+    /// // 100.0
+    /// let abs_difference = (m.mul_add(x, b) - (m*x + b)).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn mul_add(self, a: f32, b: f32) -> f32 {
+        unsafe { intrinsics::fmaf32(self, a, b) }
+    }
+
+    /// Takes the reciprocal (inverse) of a number, `1/x`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 2.0_f32;
+    /// let abs_difference = (x.recip() - (1.0/x)).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn recip(self) -> f32 {
+        num::Float::recip(self)
+    }
+
+    /// Raises a number to an integer power.
+    ///
+    /// Using this function is generally faster than using `powf`
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 2.0_f32;
+    /// let abs_difference = (x.powi(2) - x*x).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn powi(self, n: i32) -> f32 {
+        num::Float::powi(self, n)
+    }
+
+    /// Raises a number to a floating point power.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 2.0_f32;
+    /// let abs_difference = (x.powf(2.0) - x*x).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn powf(self, n: f32) -> f32 {
+        // see notes above in `floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).powf(n as f64) as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::powf32(self, n) };
+    }
+
+    /// Takes the square root of a number.
+    ///
+    /// Returns NaN if `self` is a negative number.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let positive = 4.0_f32;
+    /// let negative = -4.0_f32;
+    ///
+    /// let abs_difference = (positive.sqrt() - 2.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// assert!(negative.sqrt().is_nan());
+    /// ```
+    #[inline]
+    pub fn sqrt(self) -> f32 {
+        if self < 0.0 {
+            NAN
+        } else {
+            unsafe { intrinsics::sqrtf32(self) }
+        }
+    }
+
+    /// Returns `e^(self)`, (the exponential function).
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let one = 1.0f32;
+    /// // e^1
+    /// let e = one.exp();
+    ///
+    /// // ln(e) - 1 == 0
+    /// let abs_difference = (e.ln() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn exp(self) -> f32 {
+        // see notes above in `floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).exp() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::expf32(self) };
+    }
+
+    /// Returns `2^(self)`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = 2.0f32;
+    ///
+    /// // 2^2 - 4 == 0
+    /// let abs_difference = (f.exp2() - 4.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn exp2(self) -> f32 {
+        unsafe { intrinsics::exp2f32(self) }
+    }
+
+    /// Returns the natural logarithm of the number.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let one = 1.0f32;
+    /// // e^1
+    /// let e = one.exp();
+    ///
+    /// // ln(e) - 1 == 0
+    /// let abs_difference = (e.ln() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn ln(self) -> f32 {
+        // see notes above in `floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).ln() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::logf32(self) };
+    }
+
+    /// Returns the logarithm of the number with respect to an arbitrary base.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let ten = 10.0f32;
+    /// let two = 2.0f32;
+    ///
+    /// // log10(10) - 1 == 0
+    /// let abs_difference_10 = (ten.log(10.0) - 1.0).abs();
+    ///
+    /// // log2(2) - 1 == 0
+    /// let abs_difference_2 = (two.log(2.0) - 1.0).abs();
+    ///
+    /// assert!(abs_difference_10 <= f32::EPSILON);
+    /// assert!(abs_difference_2 <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn log(self, base: f32) -> f32 {
+        self.ln() / base.ln()
+    }
+
+    /// Returns the base 2 logarithm of the number.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let two = 2.0f32;
+    ///
+    /// // log2(2) - 1 == 0
+    /// let abs_difference = (two.log2() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn log2(self) -> f32 {
+        #[cfg(target_os = "android")]
+        return ::sys::android::log2f32(self);
+        #[cfg(not(target_os = "android"))]
+        return unsafe { intrinsics::log2f32(self) };
+    }
+
+    /// Returns the base 10 logarithm of the number.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let ten = 10.0f32;
+    ///
+    /// // log10(10) - 1 == 0
+    /// let abs_difference = (ten.log10() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn log10(self) -> f32 {
+        // see notes above in `floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).log10() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::log10f32(self) };
+    }
+
+    /// Converts radians to degrees.
+    ///
+    /// ```
+    /// use std::f32::{self, consts};
+    ///
+    /// let angle = consts::PI;
+    ///
+    /// let abs_difference = (angle.to_degrees() - 180.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn to_degrees(self) -> f32 {
+        num::Float::to_degrees(self)
+    }
+
+    /// Converts degrees to radians.
+    ///
+    /// ```
+    /// use std::f32::{self, consts};
+    ///
+    /// let angle = 180.0f32;
+    ///
+    /// let abs_difference = (angle.to_radians() - consts::PI).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn to_radians(self) -> f32 {
+        num::Float::to_radians(self)
+    }
+
+    /// Constructs a floating point number of `x*2^exp`.
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// use std::f32;
+    /// // 3*2^2 - 12 == 0
+    /// let abs_difference = (f32::ldexp(3.0, 2) - 12.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn ldexp(x: f32, exp: isize) -> f32 {
+        unsafe { cmath::ldexpf(x, exp as c_int) }
+    }
+
+    /// Breaks the number into a normalized fraction and a base-2 exponent,
+    /// satisfying:
+    ///
+    ///  * `self = x * 2^exp`
+    ///  * `0.5 <= abs(x) < 1.0`
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// use std::f32;
+    ///
+    /// let x = 4.0f32;
+    ///
+    /// // (1/2)*2^3 -> 1 * 8/2 -> 4.0
+    /// let f = x.frexp();
+    /// let abs_difference_0 = (f.0 - 0.5).abs();
+    /// let abs_difference_1 = (f.1 as f32 - 3.0).abs();
+    ///
+    /// assert!(abs_difference_0 <= f32::EPSILON);
+    /// assert!(abs_difference_1 <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn frexp(self) -> (f32, isize) {
+        unsafe {
+            let mut exp = 0;
+            let x = cmath::frexpf(self, &mut exp);
+            (x, exp as isize)
+        }
+    }
+
+    /// Returns the next representable floating-point value in the direction of
+    /// `other`.
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// use std::f32;
+    ///
+    /// let x = 1.0f32;
+    ///
+    /// let abs_diff = (x.next_after(2.0) - 1.00000011920928955078125_f32).abs();
+    ///
+    /// assert!(abs_diff <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn next_after(self, other: f32) -> f32 {
+        unsafe { cmath::nextafterf(self, other) }
+    }
+
+    /// Returns the maximum of the two numbers.
+    ///
+    /// ```
+    /// let x = 1.0f32;
+    /// let y = 2.0f32;
+    ///
+    /// assert_eq!(x.max(y), y);
+    /// ```
+    ///
+    /// If one of the arguments is NaN, then the other argument is returned.
+    #[inline]
+    pub fn max(self, other: f32) -> f32 {
+        unsafe { cmath::fmaxf(self, other) }
+    }
+
+    /// Returns the minimum of the two numbers.
+    ///
+    /// ```
+    /// let x = 1.0f32;
+    /// let y = 2.0f32;
+    ///
+    /// assert_eq!(x.min(y), x);
+    /// ```
+    ///
+    /// If one of the arguments is NaN, then the other argument is returned.
+    #[inline]
+    pub fn min(self, other: f32) -> f32 {
+        unsafe { cmath::fminf(self, other) }
+    }
+
+    /// The positive difference of two numbers.
+    ///
+    /// * If `self <= other`: `0:0`
+    /// * Else: `self - other`
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 3.0f32;
+    /// let y = -3.0f32;
+    ///
+    /// let abs_difference_x = (x.abs_sub(1.0) - 2.0).abs();
+    /// let abs_difference_y = (y.abs_sub(1.0) - 0.0).abs();
+    ///
+    /// assert!(abs_difference_x <= f32::EPSILON);
+    /// assert!(abs_difference_y <= f32::EPSILON);
+    /// ```
+    pub fn abs_sub(self, other: f32) -> f32 {
+        unsafe { cmath::fdimf(self, other) }
+    }
+
+    /// Takes the cubic root of a number.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 8.0f32;
+    ///
+    /// // x^(1/3) - 2 == 0
+    /// let abs_difference = (x.cbrt() - 2.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn cbrt(self) -> f32 {
+        unsafe { cmath::cbrtf(self) }
+    }
+
+    /// Calculates the length of the hypotenuse of a right-angle triangle given
+    /// legs of length `x` and `y`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 2.0f32;
+    /// let y = 3.0f32;
+    ///
+    /// // sqrt(x^2 + y^2)
+    /// let abs_difference = (x.hypot(y) - (x.powi(2) + y.powi(2)).sqrt()).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn hypot(self, other: f32) -> f32 {
+        unsafe { cmath::hypotf(self, other) }
+    }
+
+    /// Computes the sine of a number (in radians).
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = f32::consts::PI/2.0;
+    ///
+    /// let abs_difference = (x.sin() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn sin(self) -> f32 {
+        // see notes in `core::f32::Float::floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).sin() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::sinf32(self) };
+    }
+
+    /// Computes the cosine of a number (in radians).
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 2.0*f32::consts::PI;
+    ///
+    /// let abs_difference = (x.cos() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn cos(self) -> f32 {
+        // see notes in `core::f32::Float::floor`
+        #[cfg(target_env = "msvc")]
+        return (self as f64).cos() as f32;
+        #[cfg(not(target_env = "msvc"))]
+        return unsafe { intrinsics::cosf32(self) };
+    }
+
+    /// Computes the tangent of a number (in radians).
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = f32::consts::PI / 4.0;
+    /// let abs_difference = (x.tan() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn tan(self) -> f32 {
+        unsafe { cmath::tanf(self) }
+    }
+
+    /// Computes the arcsine of a number. Return value is in radians in
+    /// the range [-pi/2, pi/2] or NaN if the number is outside the range
+    /// [-1, 1].
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = f32::consts::PI / 2.0;
+    ///
+    /// // asin(sin(pi/2))
+    /// let abs_difference = (f.sin().asin() - f32::consts::PI / 2.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn asin(self) -> f32 {
+        unsafe { cmath::asinf(self) }
+    }
+
+    /// Computes the arccosine of a number. Return value is in radians in
+    /// the range [0, pi] or NaN if the number is outside the range
+    /// [-1, 1].
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = f32::consts::PI / 4.0;
+    ///
+    /// // acos(cos(pi/4))
+    /// let abs_difference = (f.cos().acos() - f32::consts::PI / 4.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn acos(self) -> f32 {
+        unsafe { cmath::acosf(self) }
+    }
+
+    /// Computes the arctangent of a number. Return value is in radians in the
+    /// range [-pi/2, pi/2];
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let f = 1.0f32;
+    ///
+    /// // atan(tan(1))
+    /// let abs_difference = (f.tan().atan() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn atan(self) -> f32 {
+        unsafe { cmath::atanf(self) }
+    }
+
+    /// Computes the four quadrant arctangent of `self` (`y`) and `other` (`x`).
+    ///
+    /// * `x = 0`, `y = 0`: `0`
+    /// * `x >= 0`: `arctan(y/x)` -> `[-pi/2, pi/2]`
+    /// * `y >= 0`: `arctan(y/x) + pi` -> `(pi/2, pi]`
+    /// * `y < 0`: `arctan(y/x) - pi` -> `(-pi, -pi/2)`
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let pi = f32::consts::PI;
+    /// // All angles from horizontal right (+x)
+    /// // 45 deg counter-clockwise
+    /// let x1 = 3.0f32;
+    /// let y1 = -3.0f32;
+    ///
+    /// // 135 deg clockwise
+    /// let x2 = -3.0f32;
+    /// let y2 = 3.0f32;
+    ///
+    /// let abs_difference_1 = (y1.atan2(x1) - (-pi/4.0)).abs();
+    /// let abs_difference_2 = (y2.atan2(x2) - 3.0*pi/4.0).abs();
+    ///
+    /// assert!(abs_difference_1 <= f32::EPSILON);
+    /// assert!(abs_difference_2 <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn atan2(self, other: f32) -> f32 {
+        unsafe { cmath::atan2f(self, other) }
+    }
+
+    /// Simultaneously computes the sine and cosine of the number, `x`. Returns
+    /// `(sin(x), cos(x))`.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = f32::consts::PI/4.0;
+    /// let f = x.sin_cos();
+    ///
+    /// let abs_difference_0 = (f.0 - x.sin()).abs();
+    /// let abs_difference_1 = (f.1 - x.cos()).abs();
+    ///
+    /// assert!(abs_difference_0 <= f32::EPSILON);
+    /// assert!(abs_difference_1 <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn sin_cos(self) -> (f32, f32) {
+        (self.sin(), self.cos())
+    }
+
+    /// Returns `e^(self) - 1` in a way that is accurate even if the
+    /// number is close to zero.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 6.0f32;
+    ///
+    /// // e^(ln(6)) - 1
+    /// let abs_difference = (x.ln().exp_m1() - 5.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn exp_m1(self) -> f32 {
+        unsafe { cmath::expm1f(self) }
+    }
+
+    /// Returns `ln(1+n)` (natural logarithm) more accurately than if
+    /// the operations were performed separately.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = f32::consts::E - 1.0;
+    ///
+    /// // ln(1 + (e - 1)) == ln(e) == 1
+    /// let abs_difference = (x.ln_1p() - 1.0).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn ln_1p(self) -> f32 {
+        unsafe { cmath::log1pf(self) }
+    }
+
+    /// Hyperbolic sine function.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let e = f32::consts::E;
+    /// let x = 1.0f32;
+    ///
+    /// let f = x.sinh();
+    /// // Solving sinh() at 1 gives `(e^2-1)/(2e)`
+    /// let g = (e*e - 1.0)/(2.0*e);
+    /// let abs_difference = (f - g).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn sinh(self) -> f32 {
+        unsafe { cmath::sinhf(self) }
+    }
+
+    /// Hyperbolic cosine function.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let e = f32::consts::E;
+    /// let x = 1.0f32;
+    /// let f = x.cosh();
+    /// // Solving cosh() at 1 gives this result
+    /// let g = (e*e + 1.0)/(2.0*e);
+    /// let abs_difference = (f - g).abs();
+    ///
+    /// // Same result
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn cosh(self) -> f32 {
+        unsafe { cmath::coshf(self) }
+    }
+
+    /// Hyperbolic tangent function.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let e = f32::consts::E;
+    /// let x = 1.0f32;
+    ///
+    /// let f = x.tanh();
+    /// // Solving tanh() at 1 gives `(1 - e^(-2))/(1 + e^(-2))`
+    /// let g = (1.0 - e.powi(-2))/(1.0 + e.powi(-2));
+    /// let abs_difference = (f - g).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn tanh(self) -> f32 {
+        unsafe { cmath::tanhf(self) }
+    }
+
+    /// Inverse hyperbolic sine function.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 1.0f32;
+    /// let f = x.sinh().asinh();
+    ///
+    /// let abs_difference = (f - x).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn asinh(self) -> f32 {
+        if self == NEG_INFINITY {
+            NEG_INFINITY
+        } else {
+            (self + ((self * self) + 1.0).sqrt()).ln()
+        }
+    }
+
+    /// Inverse hyperbolic cosine function.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let x = 1.0f32;
+    /// let f = x.cosh().acosh();
+    ///
+    /// let abs_difference = (f - x).abs();
+    ///
+    /// assert!(abs_difference <= f32::EPSILON);
+    /// ```
+    #[inline]
+    pub fn acosh(self) -> f32 {
+        match self {
+            x if x < 1.0 => ::f32::NAN,
+            x => (x + ((x * x) - 1.0).sqrt()).ln(),
+        }
+    }
+
+    /// Inverse hyperbolic tangent function.
+    ///
+    /// ```
+    /// use std::f32;
+    ///
+    /// let e = f32::consts::E;
+    /// let f = e.tanh().atanh();
+    ///
+    /// let abs_difference = (f - e).abs();
+    ///
+    /// assert!(abs_difference <= 1e-5);
+    /// ```
+    #[inline]
+    pub fn atanh(self) -> f32 {
+        0.5 * ((2.0 * self) / (1.0 - self)).ln_1p()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use f32;
+    use f32::*;
+    use num::*;
+    use num::FpCategory as Fp;
+
+    #[test]
+    fn test_num_f32() {
+        test_num(10f32, 2f32);
+    }
+
+    #[test]
+    fn test_min_nan() {
+        assert_eq!(NAN.min(2.0), 2.0);
+        assert_eq!(2.0f32.min(NAN), 2.0);
+    }
+
+    #[test]
+    fn test_max_nan() {
+        assert_eq!(NAN.max(2.0), 2.0);
+        assert_eq!(2.0f32.max(NAN), 2.0);
+    }
+
+    #[test]
+    fn test_nan() {
+        let nan: f32 = f32::NAN;
+        assert!(nan.is_nan());
+        assert!(!nan.is_infinite());
+        assert!(!nan.is_finite());
+        assert!(!nan.is_normal());
+        assert!(!nan.is_sign_positive());
+        assert!(!nan.is_sign_negative());
+        assert_eq!(Fp::Nan, nan.classify());
+    }
+
+    #[test]
+    fn test_infinity() {
+        let inf: f32 = f32::INFINITY;
+        assert!(inf.is_infinite());
+        assert!(!inf.is_finite());
+        assert!(inf.is_sign_positive());
+        assert!(!inf.is_sign_negative());
+        assert!(!inf.is_nan());
+        assert!(!inf.is_normal());
+        assert_eq!(Fp::Infinite, inf.classify());
+    }
+
+    #[test]
+    fn test_neg_infinity() {
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert!(neg_inf.is_infinite());
+        assert!(!neg_inf.is_finite());
+        assert!(!neg_inf.is_sign_positive());
+        assert!(neg_inf.is_sign_negative());
+        assert!(!neg_inf.is_nan());
+        assert!(!neg_inf.is_normal());
+        assert_eq!(Fp::Infinite, neg_inf.classify());
+    }
+
+    #[test]
+    fn test_zero() {
+        let zero: f32 = 0.0f32;
+        assert_eq!(0.0, zero);
+        assert!(!zero.is_infinite());
+        assert!(zero.is_finite());
+        assert!(zero.is_sign_positive());
+        assert!(!zero.is_sign_negative());
+        assert!(!zero.is_nan());
+        assert!(!zero.is_normal());
+        assert_eq!(Fp::Zero, zero.classify());
+    }
+
+    #[test]
+    fn test_neg_zero() {
+        let neg_zero: f32 = -0.0;
+        assert_eq!(0.0, neg_zero);
+        assert!(!neg_zero.is_infinite());
+        assert!(neg_zero.is_finite());
+        assert!(!neg_zero.is_sign_positive());
+        assert!(neg_zero.is_sign_negative());
+        assert!(!neg_zero.is_nan());
+        assert!(!neg_zero.is_normal());
+        assert_eq!(Fp::Zero, neg_zero.classify());
+    }
+
+    #[test]
+    fn test_one() {
+        let one: f32 = 1.0f32;
+        assert_eq!(1.0, one);
+        assert!(!one.is_infinite());
+        assert!(one.is_finite());
+        assert!(one.is_sign_positive());
+        assert!(!one.is_sign_negative());
+        assert!(!one.is_nan());
+        assert!(one.is_normal());
+        assert_eq!(Fp::Normal, one.classify());
+    }
+
+    #[test]
+    fn test_is_nan() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert!(nan.is_nan());
+        assert!(!0.0f32.is_nan());
+        assert!(!5.3f32.is_nan());
+        assert!(!(-10.732f32).is_nan());
+        assert!(!inf.is_nan());
+        assert!(!neg_inf.is_nan());
+    }
+
+    #[test]
+    fn test_is_infinite() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert!(!nan.is_infinite());
+        assert!(inf.is_infinite());
+        assert!(neg_inf.is_infinite());
+        assert!(!0.0f32.is_infinite());
+        assert!(!42.8f32.is_infinite());
+        assert!(!(-109.2f32).is_infinite());
+    }
+
+    #[test]
+    fn test_is_finite() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert!(!nan.is_finite());
+        assert!(!inf.is_finite());
+        assert!(!neg_inf.is_finite());
+        assert!(0.0f32.is_finite());
+        assert!(42.8f32.is_finite());
+        assert!((-109.2f32).is_finite());
+    }
+
+    #[test]
+    fn test_is_normal() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let zero: f32 = 0.0f32;
+        let neg_zero: f32 = -0.0;
+        assert!(!nan.is_normal());
+        assert!(!inf.is_normal());
+        assert!(!neg_inf.is_normal());
+        assert!(!zero.is_normal());
+        assert!(!neg_zero.is_normal());
+        assert!(1f32.is_normal());
+        assert!(1e-37f32.is_normal());
+        assert!(!1e-38f32.is_normal());
+    }
+
+    #[test]
+    fn test_classify() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let zero: f32 = 0.0f32;
+        let neg_zero: f32 = -0.0;
+        assert_eq!(nan.classify(), Fp::Nan);
+        assert_eq!(inf.classify(), Fp::Infinite);
+        assert_eq!(neg_inf.classify(), Fp::Infinite);
+        assert_eq!(zero.classify(), Fp::Zero);
+        assert_eq!(neg_zero.classify(), Fp::Zero);
+        assert_eq!(1f32.classify(), Fp::Normal);
+        assert_eq!(1e-37f32.classify(), Fp::Normal);
+        assert_eq!(1e-38f32.classify(), Fp::Subnormal);
+    }
+
+    #[test]
+    #[allow(deprecated)]
+    fn test_integer_decode() {
+        assert_eq!(3.14159265359f32.integer_decode(), (13176795, -22, 1));
+        assert_eq!((-8573.5918555f32).integer_decode(), (8779358, -10, -1));
+        assert_eq!(2f32.powf(100.0).integer_decode(), (8388608, 77, 1));
+        assert_eq!(0f32.integer_decode(), (0, -150, 1));
+        assert_eq!((-0f32).integer_decode(), (0, -150, -1));
+        assert_eq!(INFINITY.integer_decode(), (8388608, 105, 1));
+        assert_eq!(NEG_INFINITY.integer_decode(), (8388608, 105, -1));
+
+        // Ignore the "sign" (quiet / signalling flag) of NAN.
+        // It can vary between runtime operations and LLVM folding.
+        let (nan_m, nan_e, _nan_s) = NAN.integer_decode();
+        assert_eq!((nan_m, nan_e), (12582912, 105));
+    }
+
+    #[test]
+    fn test_floor() {
+        assert_approx_eq!(1.0f32.floor(), 1.0f32);
+        assert_approx_eq!(1.3f32.floor(), 1.0f32);
+        assert_approx_eq!(1.5f32.floor(), 1.0f32);
+        assert_approx_eq!(1.7f32.floor(), 1.0f32);
+        assert_approx_eq!(0.0f32.floor(), 0.0f32);
+        assert_approx_eq!((-0.0f32).floor(), -0.0f32);
+        assert_approx_eq!((-1.0f32).floor(), -1.0f32);
+        assert_approx_eq!((-1.3f32).floor(), -2.0f32);
+        assert_approx_eq!((-1.5f32).floor(), -2.0f32);
+        assert_approx_eq!((-1.7f32).floor(), -2.0f32);
+    }
+
+    #[test]
+    fn test_ceil() {
+        assert_approx_eq!(1.0f32.ceil(), 1.0f32);
+        assert_approx_eq!(1.3f32.ceil(), 2.0f32);
+        assert_approx_eq!(1.5f32.ceil(), 2.0f32);
+        assert_approx_eq!(1.7f32.ceil(), 2.0f32);
+        assert_approx_eq!(0.0f32.ceil(), 0.0f32);
+        assert_approx_eq!((-0.0f32).ceil(), -0.0f32);
+        assert_approx_eq!((-1.0f32).ceil(), -1.0f32);
+        assert_approx_eq!((-1.3f32).ceil(), -1.0f32);
+        assert_approx_eq!((-1.5f32).ceil(), -1.0f32);
+        assert_approx_eq!((-1.7f32).ceil(), -1.0f32);
+    }
+
+    #[test]
+    fn test_round() {
+        assert_approx_eq!(1.0f32.round(), 1.0f32);
+        assert_approx_eq!(1.3f32.round(), 1.0f32);
+        assert_approx_eq!(1.5f32.round(), 2.0f32);
+        assert_approx_eq!(1.7f32.round(), 2.0f32);
+        assert_approx_eq!(0.0f32.round(), 0.0f32);
+        assert_approx_eq!((-0.0f32).round(), -0.0f32);
+        assert_approx_eq!((-1.0f32).round(), -1.0f32);
+        assert_approx_eq!((-1.3f32).round(), -1.0f32);
+        assert_approx_eq!((-1.5f32).round(), -2.0f32);
+        assert_approx_eq!((-1.7f32).round(), -2.0f32);
+    }
+
+    #[test]
+    fn test_trunc() {
+        assert_approx_eq!(1.0f32.trunc(), 1.0f32);
+        assert_approx_eq!(1.3f32.trunc(), 1.0f32);
+        assert_approx_eq!(1.5f32.trunc(), 1.0f32);
+        assert_approx_eq!(1.7f32.trunc(), 1.0f32);
+        assert_approx_eq!(0.0f32.trunc(), 0.0f32);
+        assert_approx_eq!((-0.0f32).trunc(), -0.0f32);
+        assert_approx_eq!((-1.0f32).trunc(), -1.0f32);
+        assert_approx_eq!((-1.3f32).trunc(), -1.0f32);
+        assert_approx_eq!((-1.5f32).trunc(), -1.0f32);
+        assert_approx_eq!((-1.7f32).trunc(), -1.0f32);
+    }
+
+    #[test]
+    fn test_fract() {
+        assert_approx_eq!(1.0f32.fract(), 0.0f32);
+        assert_approx_eq!(1.3f32.fract(), 0.3f32);
+        assert_approx_eq!(1.5f32.fract(), 0.5f32);
+        assert_approx_eq!(1.7f32.fract(), 0.7f32);
+        assert_approx_eq!(0.0f32.fract(), 0.0f32);
+        assert_approx_eq!((-0.0f32).fract(), -0.0f32);
+        assert_approx_eq!((-1.0f32).fract(), -0.0f32);
+        assert_approx_eq!((-1.3f32).fract(), -0.3f32);
+        assert_approx_eq!((-1.5f32).fract(), -0.5f32);
+        assert_approx_eq!((-1.7f32).fract(), -0.7f32);
+    }
+
+    #[test]
+    fn test_abs() {
+        assert_eq!(INFINITY.abs(), INFINITY);
+        assert_eq!(1f32.abs(), 1f32);
+        assert_eq!(0f32.abs(), 0f32);
+        assert_eq!((-0f32).abs(), 0f32);
+        assert_eq!((-1f32).abs(), 1f32);
+        assert_eq!(NEG_INFINITY.abs(), INFINITY);
+        assert_eq!((1f32 / NEG_INFINITY).abs(), 0f32);
+        assert!(NAN.abs().is_nan());
+    }
+
+    #[test]
+    fn test_signum() {
+        assert_eq!(INFINITY.signum(), 1f32);
+        assert_eq!(1f32.signum(), 1f32);
+        assert_eq!(0f32.signum(), 1f32);
+        assert_eq!((-0f32).signum(), -1f32);
+        assert_eq!((-1f32).signum(), -1f32);
+        assert_eq!(NEG_INFINITY.signum(), -1f32);
+        assert_eq!((1f32 / NEG_INFINITY).signum(), -1f32);
+        assert!(NAN.signum().is_nan());
+    }
+
+    #[test]
+    fn test_is_sign_positive() {
+        assert!(INFINITY.is_sign_positive());
+        assert!(1f32.is_sign_positive());
+        assert!(0f32.is_sign_positive());
+        assert!(!(-0f32).is_sign_positive());
+        assert!(!(-1f32).is_sign_positive());
+        assert!(!NEG_INFINITY.is_sign_positive());
+        assert!(!(1f32 / NEG_INFINITY).is_sign_positive());
+        assert!(!NAN.is_sign_positive());
+    }
+
+    #[test]
+    fn test_is_sign_negative() {
+        assert!(!INFINITY.is_sign_negative());
+        assert!(!1f32.is_sign_negative());
+        assert!(!0f32.is_sign_negative());
+        assert!((-0f32).is_sign_negative());
+        assert!((-1f32).is_sign_negative());
+        assert!(NEG_INFINITY.is_sign_negative());
+        assert!((1f32 / NEG_INFINITY).is_sign_negative());
+        assert!(!NAN.is_sign_negative());
+    }
+
+    #[test]
+    fn test_mul_add() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_approx_eq!(12.3f32.mul_add(4.5, 6.7), 62.05);
+        assert_approx_eq!((-12.3f32).mul_add(-4.5, -6.7), 48.65);
+        assert_approx_eq!(0.0f32.mul_add(8.9, 1.2), 1.2);
+        assert_approx_eq!(3.4f32.mul_add(-0.0, 5.6), 5.6);
+        assert!(nan.mul_add(7.8, 9.0).is_nan());
+        assert_eq!(inf.mul_add(7.8, 9.0), inf);
+        assert_eq!(neg_inf.mul_add(7.8, 9.0), neg_inf);
+        assert_eq!(8.9f32.mul_add(inf, 3.2), inf);
+        assert_eq!((-3.2f32).mul_add(2.4, neg_inf), neg_inf);
+    }
+
+    #[test]
+    fn test_recip() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(1.0f32.recip(), 1.0);
+        assert_eq!(2.0f32.recip(), 0.5);
+        assert_eq!((-0.4f32).recip(), -2.5);
+        assert_eq!(0.0f32.recip(), inf);
+        assert!(nan.recip().is_nan());
+        assert_eq!(inf.recip(), 0.0);
+        assert_eq!(neg_inf.recip(), 0.0);
+    }
+
+    #[test]
+    fn test_powi() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(1.0f32.powi(1), 1.0);
+        assert_approx_eq!((-3.1f32).powi(2), 9.61);
+        assert_approx_eq!(5.9f32.powi(-2), 0.028727);
+        assert_eq!(8.3f32.powi(0), 1.0);
+        assert!(nan.powi(2).is_nan());
+        assert_eq!(inf.powi(3), inf);
+        assert_eq!(neg_inf.powi(2), inf);
+    }
+
+    #[test]
+    fn test_powf() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(1.0f32.powf(1.0), 1.0);
+        assert_approx_eq!(3.4f32.powf(4.5), 246.408218);
+        assert_approx_eq!(2.7f32.powf(-3.2), 0.041652);
+        assert_approx_eq!((-3.1f32).powf(2.0), 9.61);
+        assert_approx_eq!(5.9f32.powf(-2.0), 0.028727);
+        assert_eq!(8.3f32.powf(0.0), 1.0);
+        assert!(nan.powf(2.0).is_nan());
+        assert_eq!(inf.powf(2.0), inf);
+        assert_eq!(neg_inf.powf(3.0), neg_inf);
+    }
+
+    #[test]
+    fn test_sqrt_domain() {
+        assert!(NAN.sqrt().is_nan());
+        assert!(NEG_INFINITY.sqrt().is_nan());
+        assert!((-1.0f32).sqrt().is_nan());
+        assert_eq!((-0.0f32).sqrt(), -0.0);
+        assert_eq!(0.0f32.sqrt(), 0.0);
+        assert_eq!(1.0f32.sqrt(), 1.0);
+        assert_eq!(INFINITY.sqrt(), INFINITY);
+    }
+
+    #[test]
+    fn test_exp() {
+        assert_eq!(1.0, 0.0f32.exp());
+        assert_approx_eq!(2.718282, 1.0f32.exp());
+        assert_approx_eq!(148.413162, 5.0f32.exp());
+
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let nan: f32 = f32::NAN;
+        assert_eq!(inf, inf.exp());
+        assert_eq!(0.0, neg_inf.exp());
+        assert!(nan.exp().is_nan());
+    }
+
+    #[test]
+    fn test_exp2() {
+        assert_eq!(32.0, 5.0f32.exp2());
+        assert_eq!(1.0, 0.0f32.exp2());
+
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let nan: f32 = f32::NAN;
+        assert_eq!(inf, inf.exp2());
+        assert_eq!(0.0, neg_inf.exp2());
+        assert!(nan.exp2().is_nan());
+    }
+
+    #[test]
+    fn test_ln() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_approx_eq!(1.0f32.exp().ln(), 1.0);
+        assert!(nan.ln().is_nan());
+        assert_eq!(inf.ln(), inf);
+        assert!(neg_inf.ln().is_nan());
+        assert!((-2.3f32).ln().is_nan());
+        assert_eq!((-0.0f32).ln(), neg_inf);
+        assert_eq!(0.0f32.ln(), neg_inf);
+        assert_approx_eq!(4.0f32.ln(), 1.386294);
+    }
+
+    #[test]
+    fn test_log() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(10.0f32.log(10.0), 1.0);
+        assert_approx_eq!(2.3f32.log(3.5), 0.664858);
+        assert_eq!(1.0f32.exp().log(1.0f32.exp()), 1.0);
+        assert!(1.0f32.log(1.0).is_nan());
+        assert!(1.0f32.log(-13.9).is_nan());
+        assert!(nan.log(2.3).is_nan());
+        assert_eq!(inf.log(10.0), inf);
+        assert!(neg_inf.log(8.8).is_nan());
+        assert!((-2.3f32).log(0.1).is_nan());
+        assert_eq!((-0.0f32).log(2.0), neg_inf);
+        assert_eq!(0.0f32.log(7.0), neg_inf);
+    }
+
+    #[test]
+    fn test_log2() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_approx_eq!(10.0f32.log2(), 3.321928);
+        assert_approx_eq!(2.3f32.log2(), 1.201634);
+        assert_approx_eq!(1.0f32.exp().log2(), 1.442695);
+        assert!(nan.log2().is_nan());
+        assert_eq!(inf.log2(), inf);
+        assert!(neg_inf.log2().is_nan());
+        assert!((-2.3f32).log2().is_nan());
+        assert_eq!((-0.0f32).log2(), neg_inf);
+        assert_eq!(0.0f32.log2(), neg_inf);
+    }
+
+    #[test]
+    fn test_log10() {
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(10.0f32.log10(), 1.0);
+        assert_approx_eq!(2.3f32.log10(), 0.361728);
+        assert_approx_eq!(1.0f32.exp().log10(), 0.434294);
+        assert_eq!(1.0f32.log10(), 0.0);
+        assert!(nan.log10().is_nan());
+        assert_eq!(inf.log10(), inf);
+        assert!(neg_inf.log10().is_nan());
+        assert!((-2.3f32).log10().is_nan());
+        assert_eq!((-0.0f32).log10(), neg_inf);
+        assert_eq!(0.0f32.log10(), neg_inf);
+    }
+
+    #[test]
+    fn test_to_degrees() {
+        let pi: f32 = consts::PI;
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(0.0f32.to_degrees(), 0.0);
+        assert_approx_eq!((-5.8f32).to_degrees(), -332.315521);
+        assert_eq!(pi.to_degrees(), 180.0);
+        assert!(nan.to_degrees().is_nan());
+        assert_eq!(inf.to_degrees(), inf);
+        assert_eq!(neg_inf.to_degrees(), neg_inf);
+    }
+
+    #[test]
+    fn test_to_radians() {
+        let pi: f32 = consts::PI;
+        let nan: f32 = f32::NAN;
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        assert_eq!(0.0f32.to_radians(), 0.0);
+        assert_approx_eq!(154.6f32.to_radians(), 2.698279);
+        assert_approx_eq!((-332.31f32).to_radians(), -5.799903);
+        assert_eq!(180.0f32.to_radians(), pi);
+        assert!(nan.to_radians().is_nan());
+        assert_eq!(inf.to_radians(), inf);
+        assert_eq!(neg_inf.to_radians(), neg_inf);
+    }
+
+    #[test]
+    #[allow(deprecated)]
+    fn test_ldexp() {
+        let f1 = 2.0f32.powi(-123);
+        let f2 = 2.0f32.powi(-111);
+        let f3 = 1.75 * 2.0f32.powi(-12);
+        assert_eq!(f32::ldexp(1f32, -123), f1);
+        assert_eq!(f32::ldexp(1f32, -111), f2);
+        assert_eq!(f32::ldexp(1.75f32, -12), f3);
+
+        assert_eq!(f32::ldexp(0f32, -123), 0f32);
+        assert_eq!(f32::ldexp(-0f32, -123), -0f32);
+
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let nan: f32 = f32::NAN;
+        assert_eq!(f32::ldexp(inf, -123), inf);
+        assert_eq!(f32::ldexp(neg_inf, -123), neg_inf);
+        assert!(f32::ldexp(nan, -123).is_nan());
+    }
+
+    #[test]
+    #[allow(deprecated)]
+    fn test_frexp() {
+        let f1 = 2.0f32.powi(-123);
+        let f2 = 2.0f32.powi(-111);
+        let f3 = 1.75 * 2.0f32.powi(-123);
+        let (x1, exp1) = f1.frexp();
+        let (x2, exp2) = f2.frexp();
+        let (x3, exp3) = f3.frexp();
+        assert_eq!((x1, exp1), (0.5f32, -122));
+        assert_eq!((x2, exp2), (0.5f32, -110));
+        assert_eq!((x3, exp3), (0.875f32, -122));
+        assert_eq!(f32::ldexp(x1, exp1), f1);
+        assert_eq!(f32::ldexp(x2, exp2), f2);
+        assert_eq!(f32::ldexp(x3, exp3), f3);
+
+        assert_eq!(0f32.frexp(), (0f32, 0));
+        assert_eq!((-0f32).frexp(), (-0f32, 0));
+    }
+
+    #[test]
+    #[cfg_attr(windows, ignore)]
+    // FIXME #8755
+    #[allow(deprecated)]
+    fn test_frexp_nowin() {
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let nan: f32 = f32::NAN;
+        assert_eq!(match inf.frexp() {
+                       (x, _) => x,
+                   },
+                   inf);
+        assert_eq!(match neg_inf.frexp() {
+                       (x, _) => x,
+                   },
+                   neg_inf);
+        assert!(match nan.frexp() {
+            (x, _) => x.is_nan(),
+        })
+    }
+
+    #[test]
+    fn test_asinh() {
+        assert_eq!(0.0f32.asinh(), 0.0f32);
+        assert_eq!((-0.0f32).asinh(), -0.0f32);
+
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let nan: f32 = f32::NAN;
+        assert_eq!(inf.asinh(), inf);
+        assert_eq!(neg_inf.asinh(), neg_inf);
+        assert!(nan.asinh().is_nan());
+        assert_approx_eq!(2.0f32.asinh(), 1.443635475178810342493276740273105f32);
+        assert_approx_eq!((-2.0f32).asinh(), -1.443635475178810342493276740273105f32);
+    }
+
+    #[test]
+    fn test_acosh() {
+        assert_eq!(1.0f32.acosh(), 0.0f32);
+        assert!(0.999f32.acosh().is_nan());
+
+        let inf: f32 = f32::INFINITY;
+        let neg_inf: f32 = f32::NEG_INFINITY;
+        let nan: f32 = f32::NAN;
+        assert_eq!(inf.acosh(), inf);
+        assert!(neg_inf.acosh().is_nan());
+        assert!(nan.acosh().is_nan());
+        assert_approx_eq!(2.0f32.acosh(), 1.31695789692481670862504634730796844f32);
+        assert_approx_eq!(3.0f32.acosh(), 1.76274717403908605046521864995958461f32);
+    }
+
+    #[test]
+    fn test_atanh() {
+        assert_eq!(0.0f32.atanh(), 0.0f32);
+        assert_eq!((-0.0f32).atanh(), -0.0f32);
+
+        let inf32: f32 = f32::INFINITY;
+        let neg_inf32: f32 = f32::NEG_INFINITY;
+        assert_eq!(1.0f32.atanh(), inf32);
+        assert_eq!((-1.0f32).atanh(), neg_inf32);
+
+        assert!(2f64.atanh().atanh().is_nan());
+        assert!((-2f64).atanh().atanh().is_nan());
+
+        let inf64: f32 = f32::INFINITY;
+        let neg_inf64: f32 = f32::NEG_INFINITY;
+        let nan32: f32 = f32::NAN;
+        assert!(inf64.atanh().is_nan());
+        assert!(neg_inf64.atanh().is_nan());
+        assert!(nan32.atanh().is_nan());
+
+        assert_approx_eq!(0.5f32.atanh(), 0.54930614433405484569762261846126285f32);
+        assert_approx_eq!((-0.5f32).atanh(), -0.54930614433405484569762261846126285f32);
+    }
+
+    #[test]
+    fn test_real_consts() {
+        use super::consts;
+
+        let pi: f32 = consts::PI;
+        let frac_pi_2: f32 = consts::FRAC_PI_2;
+        let frac_pi_3: f32 = consts::FRAC_PI_3;
+        let frac_pi_4: f32 = consts::FRAC_PI_4;
+        let frac_pi_6: f32 = consts::FRAC_PI_6;
+        let frac_pi_8: f32 = consts::FRAC_PI_8;
+        let frac_1_pi: f32 = consts::FRAC_1_PI;
+        let frac_2_pi: f32 = consts::FRAC_2_PI;
+        let frac_2_sqrtpi: f32 = consts::FRAC_2_SQRT_PI;
+        let sqrt2: f32 = consts::SQRT_2;
+        let frac_1_sqrt2: f32 = consts::FRAC_1_SQRT_2;
+        let e: f32 = consts::E;
+        let log2_e: f32 = consts::LOG2_E;
+        let log10_e: f32 = consts::LOG10_E;
+        let ln_2: f32 = consts::LN_2;
+        let ln_10: f32 = consts::LN_10;
+
+        assert_approx_eq!(frac_pi_2, pi / 2f32);
+        assert_approx_eq!(frac_pi_3, pi / 3f32);
+        assert_approx_eq!(frac_pi_4, pi / 4f32);
+        assert_approx_eq!(frac_pi_6, pi / 6f32);
+        assert_approx_eq!(frac_pi_8, pi / 8f32);
+        assert_approx_eq!(frac_1_pi, 1f32 / pi);
+        assert_approx_eq!(frac_2_pi, 2f32 / pi);
+        assert_approx_eq!(frac_2_sqrtpi, 2f32 / pi.sqrt());
+        assert_approx_eq!(sqrt2, 2f32.sqrt());
+        assert_approx_eq!(frac_1_sqrt2, 1f32 / 2f32.sqrt());
+        assert_approx_eq!(log2_e, e.log2());
+        assert_approx_eq!(log10_e, e.log10());
+        assert_approx_eq!(ln_2, 2f32.ln());
+        assert_approx_eq!(ln_10, 10f32.ln());
+    }
+}
diff --git a/std/src/num/f64.rs b/std/src/num/f64.rs
new file mode 100644
index 0000000..2f23dbe
--- /dev/null
+++ b/std/src/num/f64.rs
@@ -0,0 +1,1712 @@
+// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0  or the MIT license
+// , at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! The 64-bit floating point type.
+//!
+//! *[See also the `f64` primitive type](../primitive.f64.html).*
+
+#![allow(missing_docs)]
+
+#[cfg(not(test))]
+use core::num;
+#[cfg(not(test))]
+use core::intrinsics;
+#[cfg(not(test))]
+use libctru::libc::c_int;
+#[cfg(not(test))]
+use core::num::FpCategory;
+
+pub use core::f64::{RADIX, MANTISSA_DIGITS, DIGITS, EPSILON};
+pub use core::f64::{MIN_EXP, MAX_EXP, MIN_10_EXP};
+pub use core::f64::{MAX_10_EXP, NAN, INFINITY, NEG_INFINITY};
+pub use core::f64::{MIN, MIN_POSITIVE, MAX};
+pub use core::f64::consts;
+
+#[allow(dead_code)]
+mod cmath {
+    use libctru::libc::{c_double, c_int};
+
+    #[link_name = "m"]
+    extern "C" {
+        pub fn acos(n: c_double) -> c_double;
+        pub fn asin(n: c_double) -> c_double;
+        pub fn atan(n: c_double) -> c_double;
+        pub fn atan2(a: c_double, b: c_double) -> c_double;
+        pub fn cbrt(n: c_double) -> c_double;
+        pub fn cosh(n: c_double) -> c_double;
+        pub fn erf(n: c_double) -> c_double;
+        pub fn erfc(n: c_double) -> c_double;
+        pub fn expm1(n: c_double) -> c_double;
+        pub fn fdim(a: c_double, b: c_double) -> c_double;
+        pub fn fmax(a: c_double, b: c_double) -> c_double;
+        pub fn fmin(a: c_double, b: c_double) -> c_double;
+        pub fn fmod(a: c_double, b: c_double) -> c_double;
+        pub fn frexp(n: c_double, value: &mut c_int) -> c_double;
+        pub fn ilogb(n: c_double) -> c_int;
+        pub fn ldexp(x: c_double, n: c_int) -> c_double;
+        pub fn logb(n: c_double) -> c_double;
+        pub fn log1p(n: c_double) -> c_double;
+        pub fn nextafter(x: c_double, y: c_double) -> c_double;
+        pub fn modf(n: c_double, iptr: &mut c_double) -> c_double;
+        pub fn sinh(n: c_double) -> c_double;
+        pub fn tan(n: c_double) -> c_double;
+        pub fn tanh(n: c_double) -> c_double;
+        pub fn tgamma(n: c_double) -> c_double;
+
+        // These are commonly only available for doubles
+
+        pub fn j0(n: c_double) -> c_double;
+        pub fn j1(n: c_double) -> c_double;
+        pub fn jn(i: c_int, n: c_double) -> c_double;
+
+        pub fn y0(n: c_double) -> c_double;
+        pub fn y1(n: c_double) -> c_double;
+        pub fn yn(i: c_int, n: c_double) -> c_double;
+
+        #[cfg_attr(all(windows, target_env = "msvc"), link_name = "__lgamma_r")]
+        pub fn lgamma_r(n: c_double, sign: &mut c_int) -> c_double;
+
+        #[cfg_attr(all(windows, target_env = "msvc"), link_name = "_hypot")]
+        pub fn hypot(x: c_double, y: c_double) -> c_double;
+    }
+}
+
+#[cfg(not(test))]
+#[lang = "f64"]
+impl f64 {
+    /// Returns `true` if this value is `NaN` and false otherwise.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let nan = f64::NAN;
+    /// let f = 7.0_f64;
+    ///
+    /// assert!(nan.is_nan());
+    /// assert!(!f.is_nan());
+    /// ```
+    #[inline]
+    pub fn is_nan(self) -> bool {
+        num::Float::is_nan(self)
+    }
+
+    /// Returns `true` if this value is positive infinity or negative infinity and
+    /// false otherwise.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let f = 7.0f64;
+    /// let inf = f64::INFINITY;
+    /// let neg_inf = f64::NEG_INFINITY;
+    /// let nan = f64::NAN;
+    ///
+    /// assert!(!f.is_infinite());
+    /// assert!(!nan.is_infinite());
+    ///
+    /// assert!(inf.is_infinite());
+    /// assert!(neg_inf.is_infinite());
+    /// ```
+    #[inline]
+    pub fn is_infinite(self) -> bool {
+        num::Float::is_infinite(self)
+    }
+
+    /// Returns `true` if this number is neither infinite nor `NaN`.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let f = 7.0f64;
+    /// let inf: f64 = f64::INFINITY;
+    /// let neg_inf: f64 = f64::NEG_INFINITY;
+    /// let nan: f64 = f64::NAN;
+    ///
+    /// assert!(f.is_finite());
+    ///
+    /// assert!(!nan.is_finite());
+    /// assert!(!inf.is_finite());
+    /// assert!(!neg_inf.is_finite());
+    /// ```
+    #[inline]
+    pub fn is_finite(self) -> bool {
+        num::Float::is_finite(self)
+    }
+
+    /// Returns `true` if the number is neither zero, infinite,
+    /// [subnormal][subnormal], or `NaN`.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let min = f64::MIN_POSITIVE; // 2.2250738585072014e-308f64
+    /// let max = f64::MAX;
+    /// let lower_than_min = 1.0e-308_f64;
+    /// let zero = 0.0f64;
+    ///
+    /// assert!(min.is_normal());
+    /// assert!(max.is_normal());
+    ///
+    /// assert!(!zero.is_normal());
+    /// assert!(!f64::NAN.is_normal());
+    /// assert!(!f64::INFINITY.is_normal());
+    /// // Values between `0` and `min` are Subnormal.
+    /// assert!(!lower_than_min.is_normal());
+    /// ```
+    /// [subnormal]: https://en.wikipedia.org/wiki/Denormal_number
+    #[inline]
+    pub fn is_normal(self) -> bool {
+        num::Float::is_normal(self)
+    }
+
+    /// Returns the floating point category of the number. If only one property
+    /// is going to be tested, it is generally faster to use the specific
+    /// predicate instead.
+    ///
+    /// ```
+    /// use std::num::FpCategory;
+    /// use std::f64;
+    ///
+    /// let num = 12.4_f64;
+    /// let inf = f64::INFINITY;
+    ///
+    /// assert_eq!(num.classify(), FpCategory::Normal);
+    /// assert_eq!(inf.classify(), FpCategory::Infinite);
+    /// ```
+    #[inline]
+    pub fn classify(self) -> FpCategory {
+        num::Float::classify(self)
+    }
+
+    /// Returns the mantissa, base 2 exponent, and sign as integers, respectively.
+    /// The original number can be recovered by `sign * mantissa * 2 ^ exponent`.
+    /// The floating point encoding is documented in the [Reference][floating-point].
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// let num = 2.0f64;
+    ///
+    /// // (8388608, -22, 1)
+    /// let (mantissa, exponent, sign) = num.integer_decode();
+    /// let sign_f = sign as f64;
+    /// let mantissa_f = mantissa as f64;
+    /// let exponent_f = num.powf(exponent as f64);
+    ///
+    /// // 1 * 8388608 * 2^(-22) == 2
+    /// let abs_difference = (sign_f * mantissa_f * exponent_f - num).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    /// [floating-point]: ../reference.html#machine-types
+    #[inline]
+    #[allow(deprecated)]
+    pub fn integer_decode(self) -> (u64, i16, i8) {
+        num::Float::integer_decode(self)
+    }
+
+    /// Returns the largest integer less than or equal to a number.
+    ///
+    /// ```
+    /// let f = 3.99_f64;
+    /// let g = 3.0_f64;
+    ///
+    /// assert_eq!(f.floor(), 3.0);
+    /// assert_eq!(g.floor(), 3.0);
+    /// ```
+    #[inline]
+    pub fn floor(self) -> f64 {
+        unsafe { intrinsics::floorf64(self) }
+    }
+
+    /// Returns the smallest integer greater than or equal to a number.
+    ///
+    /// ```
+    /// let f = 3.01_f64;
+    /// let g = 4.0_f64;
+    ///
+    /// assert_eq!(f.ceil(), 4.0);
+    /// assert_eq!(g.ceil(), 4.0);
+    /// ```
+    #[inline]
+    pub fn ceil(self) -> f64 {
+        unsafe { intrinsics::ceilf64(self) }
+    }
+
+    /// Returns the nearest integer to a number. Round half-way cases away from
+    /// `0.0`.
+    ///
+    /// ```
+    /// let f = 3.3_f64;
+    /// let g = -3.3_f64;
+    ///
+    /// assert_eq!(f.round(), 3.0);
+    /// assert_eq!(g.round(), -3.0);
+    /// ```
+    #[inline]
+    pub fn round(self) -> f64 {
+        unsafe { intrinsics::roundf64(self) }
+    }
+
+    /// Returns the integer part of a number.
+    ///
+    /// ```
+    /// let f = 3.3_f64;
+    /// let g = -3.7_f64;
+    ///
+    /// assert_eq!(f.trunc(), 3.0);
+    /// assert_eq!(g.trunc(), -3.0);
+    /// ```
+    #[inline]
+    pub fn trunc(self) -> f64 {
+        unsafe { intrinsics::truncf64(self) }
+    }
+
+    /// Returns the fractional part of a number.
+    ///
+    /// ```
+    /// let x = 3.5_f64;
+    /// let y = -3.5_f64;
+    /// let abs_difference_x = (x.fract() - 0.5).abs();
+    /// let abs_difference_y = (y.fract() - (-0.5)).abs();
+    ///
+    /// assert!(abs_difference_x < 1e-10);
+    /// assert!(abs_difference_y < 1e-10);
+    /// ```
+    #[inline]
+    pub fn fract(self) -> f64 {
+        self - self.trunc()
+    }
+
+    /// Computes the absolute value of `self`. Returns `NAN` if the
+    /// number is `NAN`.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let x = 3.5_f64;
+    /// let y = -3.5_f64;
+    ///
+    /// let abs_difference_x = (x.abs() - x).abs();
+    /// let abs_difference_y = (y.abs() - (-y)).abs();
+    ///
+    /// assert!(abs_difference_x < 1e-10);
+    /// assert!(abs_difference_y < 1e-10);
+    ///
+    /// assert!(f64::NAN.abs().is_nan());
+    /// ```
+    #[inline]
+    pub fn abs(self) -> f64 {
+        num::Float::abs(self)
+    }
+
+    /// Returns a number that represents the sign of `self`.
+    ///
+    /// - `1.0` if the number is positive, `+0.0` or `INFINITY`
+    /// - `-1.0` if the number is negative, `-0.0` or `NEG_INFINITY`
+    /// - `NAN` if the number is `NAN`
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let f = 3.5_f64;
+    ///
+    /// assert_eq!(f.signum(), 1.0);
+    /// assert_eq!(f64::NEG_INFINITY.signum(), -1.0);
+    ///
+    /// assert!(f64::NAN.signum().is_nan());
+    /// ```
+    #[inline]
+    pub fn signum(self) -> f64 {
+        num::Float::signum(self)
+    }
+
+    /// Returns `true` if `self`'s sign bit is positive, including
+    /// `+0.0` and `INFINITY`.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let nan: f64 = f64::NAN;
+    ///
+    /// let f = 7.0_f64;
+    /// let g = -7.0_f64;
+    ///
+    /// assert!(f.is_sign_positive());
+    /// assert!(!g.is_sign_positive());
+    /// // Requires both tests to determine if is `NaN`
+    /// assert!(!nan.is_sign_positive() && !nan.is_sign_negative());
+    /// ```
+    #[inline]
+    pub fn is_sign_positive(self) -> bool {
+        num::Float::is_sign_positive(self)
+    }
+
+    #[inline]
+    pub fn is_positive(self) -> bool {
+        num::Float::is_sign_positive(self)
+    }
+
+    /// Returns `true` if `self`'s sign is negative, including `-0.0`
+    /// and `NEG_INFINITY`.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let nan = f64::NAN;
+    ///
+    /// let f = 7.0_f64;
+    /// let g = -7.0_f64;
+    ///
+    /// assert!(!f.is_sign_negative());
+    /// assert!(g.is_sign_negative());
+    /// // Requires both tests to determine if is `NaN`.
+    /// assert!(!nan.is_sign_positive() && !nan.is_sign_negative());
+    /// ```
+    #[inline]
+    pub fn is_sign_negative(self) -> bool {
+        num::Float::is_sign_negative(self)
+    }
+
+    #[inline]
+    pub fn is_negative(self) -> bool {
+        num::Float::is_sign_negative(self)
+    }
+
+    /// Fused multiply-add. Computes `(self * a) + b` with only one rounding
+    /// error. This produces a more accurate result with better performance than
+    /// a separate multiplication operation followed by an add.
+    ///
+    /// ```
+    /// let m = 10.0_f64;
+    /// let x = 4.0_f64;
+    /// let b = 60.0_f64;
+    ///
+    /// // 100.0
+    /// let abs_difference = (m.mul_add(x, b) - (m*x + b)).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn mul_add(self, a: f64, b: f64) -> f64 {
+        unsafe { intrinsics::fmaf64(self, a, b) }
+    }
+
+    /// Takes the reciprocal (inverse) of a number, `1/x`.
+    ///
+    /// ```
+    /// let x = 2.0_f64;
+    /// let abs_difference = (x.recip() - (1.0/x)).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn recip(self) -> f64 {
+        num::Float::recip(self)
+    }
+
+    /// Raises a number to an integer power.
+    ///
+    /// Using this function is generally faster than using `powf`
+    ///
+    /// ```
+    /// let x = 2.0_f64;
+    /// let abs_difference = (x.powi(2) - x*x).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn powi(self, n: i32) -> f64 {
+        num::Float::powi(self, n)
+    }
+
+    /// Raises a number to a floating point power.
+    ///
+    /// ```
+    /// let x = 2.0_f64;
+    /// let abs_difference = (x.powf(2.0) - x*x).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn powf(self, n: f64) -> f64 {
+        unsafe { intrinsics::powf64(self, n) }
+    }
+
+    /// Takes the square root of a number.
+    ///
+    /// Returns NaN if `self` is a negative number.
+    ///
+    /// ```
+    /// let positive = 4.0_f64;
+    /// let negative = -4.0_f64;
+    ///
+    /// let abs_difference = (positive.sqrt() - 2.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// assert!(negative.sqrt().is_nan());
+    /// ```
+    #[inline]
+    pub fn sqrt(self) -> f64 {
+        if self < 0.0 {
+            NAN
+        } else {
+            unsafe { intrinsics::sqrtf64(self) }
+        }
+    }
+
+    /// Returns `e^(self)`, (the exponential function).
+    ///
+    /// ```
+    /// let one = 1.0_f64;
+    /// // e^1
+    /// let e = one.exp();
+    ///
+    /// // ln(e) - 1 == 0
+    /// let abs_difference = (e.ln() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn exp(self) -> f64 {
+        unsafe { intrinsics::expf64(self) }
+    }
+
+    /// Returns `2^(self)`.
+    ///
+    /// ```
+    /// let f = 2.0_f64;
+    ///
+    /// // 2^2 - 4 == 0
+    /// let abs_difference = (f.exp2() - 4.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn exp2(self) -> f64 {
+        unsafe { intrinsics::exp2f64(self) }
+    }
+
+    /// Returns the natural logarithm of the number.
+    ///
+    /// ```
+    /// let one = 1.0_f64;
+    /// // e^1
+    /// let e = one.exp();
+    ///
+    /// // ln(e) - 1 == 0
+    /// let abs_difference = (e.ln() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn ln(self) -> f64 {
+        self.log_wrapper(|n| { unsafe { intrinsics::logf64(n) } })
+    }
+
+    /// Returns the logarithm of the number with respect to an arbitrary base.
+    ///
+    /// ```
+    /// let ten = 10.0_f64;
+    /// let two = 2.0_f64;
+    ///
+    /// // log10(10) - 1 == 0
+    /// let abs_difference_10 = (ten.log(10.0) - 1.0).abs();
+    ///
+    /// // log2(2) - 1 == 0
+    /// let abs_difference_2 = (two.log(2.0) - 1.0).abs();
+    ///
+    /// assert!(abs_difference_10 < 1e-10);
+    /// assert!(abs_difference_2 < 1e-10);
+    /// ```
+    #[inline]
+    pub fn log(self, base: f64) -> f64 {
+        self.ln() / base.ln()
+    }
+
+    /// Returns the base 2 logarithm of the number.
+    ///
+    /// ```
+    /// let two = 2.0_f64;
+    ///
+    /// // log2(2) - 1 == 0
+    /// let abs_difference = (two.log2() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn log2(self) -> f64 {
+        self.log_wrapper(|n| {
+            return unsafe { intrinsics::log2f64(n) };
+        })
+    }
+
+    /// Returns the base 10 logarithm of the number.
+    ///
+    /// ```
+    /// let ten = 10.0_f64;
+    ///
+    /// // log10(10) - 1 == 0
+    /// let abs_difference = (ten.log10() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn log10(self) -> f64 {
+        self.log_wrapper(|n| { unsafe { intrinsics::log10f64(n) } })
+    }
+
+    /// Converts radians to degrees.
+    ///
+    /// ```
+    /// use std::f64::consts;
+    ///
+    /// let angle = consts::PI;
+    ///
+    /// let abs_difference = (angle.to_degrees() - 180.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn to_degrees(self) -> f64 {
+        num::Float::to_degrees(self)
+    }
+
+    /// Converts degrees to radians.
+    ///
+    /// ```
+    /// use std::f64::consts;
+    ///
+    /// let angle = 180.0_f64;
+    ///
+    /// let abs_difference = (angle.to_radians() - consts::PI).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn to_radians(self) -> f64 {
+        num::Float::to_radians(self)
+    }
+
+    /// Constructs a floating point number of `x*2^exp`.
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// // 3*2^2 - 12 == 0
+    /// let abs_difference = (f64::ldexp(3.0, 2) - 12.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn ldexp(x: f64, exp: isize) -> f64 {
+        unsafe { cmath::ldexp(x, exp as c_int) }
+    }
+
+    /// Breaks the number into a normalized fraction and a base-2 exponent,
+    /// satisfying:
+    ///
+    ///  * `self = x * 2^exp`
+    ///  * `0.5 <= abs(x) < 1.0`
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// let x = 4.0_f64;
+    ///
+    /// // (1/2)*2^3 -> 1 * 8/2 -> 4.0
+    /// let f = x.frexp();
+    /// let abs_difference_0 = (f.0 - 0.5).abs();
+    /// let abs_difference_1 = (f.1 as f64 - 3.0).abs();
+    ///
+    /// assert!(abs_difference_0 < 1e-10);
+    /// assert!(abs_difference_1 < 1e-10);
+    /// ```
+    #[inline]
+    pub fn frexp(self) -> (f64, isize) {
+        unsafe {
+            let mut exp = 0;
+            let x = cmath::frexp(self, &mut exp);
+            (x, exp as isize)
+        }
+    }
+
+    /// Returns the next representable floating-point value in the direction of
+    /// `other`.
+    ///
+    /// ```
+    /// #![feature(float_extras)]
+    ///
+    /// let x = 1.0f64;
+    ///
+    /// let abs_diff = (x.next_after(2.0) - 1.0000000000000002220446049250313_f64).abs();
+    ///
+    /// assert!(abs_diff < 1e-10);
+    /// ```
+    #[inline]
+    pub fn next_after(self, other: f64) -> f64 {
+        unsafe { cmath::nextafter(self, other) }
+    }
+
+    /// Returns the maximum of the two numbers.
+    ///
+    /// ```
+    /// let x = 1.0_f64;
+    /// let y = 2.0_f64;
+    ///
+    /// assert_eq!(x.max(y), y);
+    /// ```
+    ///
+    /// If one of the arguments is NaN, then the other argument is returned.
+    #[inline]
+    pub fn max(self, other: f64) -> f64 {
+        unsafe { cmath::fmax(self, other) }
+    }
+
+    /// Returns the minimum of the two numbers.
+    ///
+    /// ```
+    /// let x = 1.0_f64;
+    /// let y = 2.0_f64;
+    ///
+    /// assert_eq!(x.min(y), x);
+    /// ```
+    ///
+    /// If one of the arguments is NaN, then the other argument is returned.
+    #[inline]
+    pub fn min(self, other: f64) -> f64 {
+        unsafe { cmath::fmin(self, other) }
+    }
+
+    /// The positive difference of two numbers.
+    ///
+    /// * If `self <= other`: `0:0`
+    /// * Else: `self - other`
+    ///
+    /// ```
+    /// let x = 3.0_f64;
+    /// let y = -3.0_f64;
+    ///
+    /// let abs_difference_x = (x.abs_sub(1.0) - 2.0).abs();
+    /// let abs_difference_y = (y.abs_sub(1.0) - 0.0).abs();
+    ///
+    /// assert!(abs_difference_x < 1e-10);
+    /// assert!(abs_difference_y < 1e-10);
+    /// ```
+    #[inline]
+    pub fn abs_sub(self, other: f64) -> f64 {
+        unsafe { cmath::fdim(self, other) }
+    }
+
+    /// Takes the cubic root of a number.
+    ///
+    /// ```
+    /// let x = 8.0_f64;
+    ///
+    /// // x^(1/3) - 2 == 0
+    /// let abs_difference = (x.cbrt() - 2.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn cbrt(self) -> f64 {
+        unsafe { cmath::cbrt(self) }
+    }
+
+    /// Calculates the length of the hypotenuse of a right-angle triangle given
+    /// legs of length `x` and `y`.
+    ///
+    /// ```
+    /// let x = 2.0_f64;
+    /// let y = 3.0_f64;
+    ///
+    /// // sqrt(x^2 + y^2)
+    /// let abs_difference = (x.hypot(y) - (x.powi(2) + y.powi(2)).sqrt()).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn hypot(self, other: f64) -> f64 {
+        unsafe { cmath::hypot(self, other) }
+    }
+
+    /// Computes the sine of a number (in radians).
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let x = f64::consts::PI/2.0;
+    ///
+    /// let abs_difference = (x.sin() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn sin(self) -> f64 {
+        unsafe { intrinsics::sinf64(self) }
+    }
+
+    /// Computes the cosine of a number (in radians).
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let x = 2.0*f64::consts::PI;
+    ///
+    /// let abs_difference = (x.cos() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn cos(self) -> f64 {
+        unsafe { intrinsics::cosf64(self) }
+    }
+
+    /// Computes the tangent of a number (in radians).
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let x = f64::consts::PI/4.0;
+    /// let abs_difference = (x.tan() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-14);
+    /// ```
+    #[inline]
+    pub fn tan(self) -> f64 {
+        unsafe { cmath::tan(self) }
+    }
+
+    /// Computes the arcsine of a number. Return value is in radians in
+    /// the range [-pi/2, pi/2] or NaN if the number is outside the range
+    /// [-1, 1].
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let f = f64::consts::PI / 2.0;
+    ///
+    /// // asin(sin(pi/2))
+    /// let abs_difference = (f.sin().asin() - f64::consts::PI / 2.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn asin(self) -> f64 {
+        unsafe { cmath::asin(self) }
+    }
+
+    /// Computes the arccosine of a number. Return value is in radians in
+    /// the range [0, pi] or NaN if the number is outside the range
+    /// [-1, 1].
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let f = f64::consts::PI / 4.0;
+    ///
+    /// // acos(cos(pi/4))
+    /// let abs_difference = (f.cos().acos() - f64::consts::PI / 4.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn acos(self) -> f64 {
+        unsafe { cmath::acos(self) }
+    }
+
+    /// Computes the arctangent of a number. Return value is in radians in the
+    /// range [-pi/2, pi/2];
+    ///
+    /// ```
+    /// let f = 1.0_f64;
+    ///
+    /// // atan(tan(1))
+    /// let abs_difference = (f.tan().atan() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn atan(self) -> f64 {
+        unsafe { cmath::atan(self) }
+    }
+
+    /// Computes the four quadrant arctangent of `self` (`y`) and `other` (`x`).
+    ///
+    /// * `x = 0`, `y = 0`: `0`
+    /// * `x >= 0`: `arctan(y/x)` -> `[-pi/2, pi/2]`
+    /// * `y >= 0`: `arctan(y/x) + pi` -> `(pi/2, pi]`
+    /// * `y < 0`: `arctan(y/x) - pi` -> `(-pi, -pi/2)`
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let pi = f64::consts::PI;
+    /// // All angles from horizontal right (+x)
+    /// // 45 deg counter-clockwise
+    /// let x1 = 3.0_f64;
+    /// let y1 = -3.0_f64;
+    ///
+    /// // 135 deg clockwise
+    /// let x2 = -3.0_f64;
+    /// let y2 = 3.0_f64;
+    ///
+    /// let abs_difference_1 = (y1.atan2(x1) - (-pi/4.0)).abs();
+    /// let abs_difference_2 = (y2.atan2(x2) - 3.0*pi/4.0).abs();
+    ///
+    /// assert!(abs_difference_1 < 1e-10);
+    /// assert!(abs_difference_2 < 1e-10);
+    /// ```
+    #[inline]
+    pub fn atan2(self, other: f64) -> f64 {
+        unsafe { cmath::atan2(self, other) }
+    }
+
+    /// Simultaneously computes the sine and cosine of the number, `x`. Returns
+    /// `(sin(x), cos(x))`.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let x = f64::consts::PI/4.0;
+    /// let f = x.sin_cos();
+    ///
+    /// let abs_difference_0 = (f.0 - x.sin()).abs();
+    /// let abs_difference_1 = (f.1 - x.cos()).abs();
+    ///
+    /// assert!(abs_difference_0 < 1e-10);
+    /// assert!(abs_difference_1 < 1e-10);
+    /// ```
+    #[inline]
+    pub fn sin_cos(self) -> (f64, f64) {
+        (self.sin(), self.cos())
+    }
+
+    /// Returns `e^(self) - 1` in a way that is accurate even if the
+    /// number is close to zero.
+    ///
+    /// ```
+    /// let x = 7.0_f64;
+    ///
+    /// // e^(ln(7)) - 1
+    /// let abs_difference = (x.ln().exp_m1() - 6.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn exp_m1(self) -> f64 {
+        unsafe { cmath::expm1(self) }
+    }
+
+    /// Returns `ln(1+n)` (natural logarithm) more accurately than if
+    /// the operations were performed separately.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let x = f64::consts::E - 1.0;
+    ///
+    /// // ln(1 + (e - 1)) == ln(e) == 1
+    /// let abs_difference = (x.ln_1p() - 1.0).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn ln_1p(self) -> f64 {
+        unsafe { cmath::log1p(self) }
+    }
+
+    /// Hyperbolic sine function.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let e = f64::consts::E;
+    /// let x = 1.0_f64;
+    ///
+    /// let f = x.sinh();
+    /// // Solving sinh() at 1 gives `(e^2-1)/(2e)`
+    /// let g = (e*e - 1.0)/(2.0*e);
+    /// let abs_difference = (f - g).abs();
+    ///
+    /// assert!(abs_difference < 1e-10);
+    /// ```
+    #[inline]
+    pub fn sinh(self) -> f64 {
+        unsafe { cmath::sinh(self) }
+    }
+
+    /// Hyperbolic cosine function.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let e = f64::consts::E;
+    /// let x = 1.0_f64;
+    /// let f = x.cosh();
+    /// // Solving cosh() at 1 gives this result
+    /// let g = (e*e + 1.0)/(2.0*e);
+    /// let abs_difference = (f - g).abs();
+    ///
+    /// // Same result
+    /// assert!(abs_difference < 1.0e-10);
+    /// ```
+    #[inline]
+    pub fn cosh(self) -> f64 {
+        unsafe { cmath::cosh(self) }
+    }
+
+    /// Hyperbolic tangent function.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let e = f64::consts::E;
+    /// let x = 1.0_f64;
+    ///
+    /// let f = x.tanh();
+    /// // Solving tanh() at 1 gives `(1 - e^(-2))/(1 + e^(-2))`
+    /// let g = (1.0 - e.powi(-2))/(1.0 + e.powi(-2));
+    /// let abs_difference = (f - g).abs();
+    ///
+    /// assert!(abs_difference < 1.0e-10);
+    /// ```
+    #[inline]
+    pub fn tanh(self) -> f64 {
+        unsafe { cmath::tanh(self) }
+    }
+
+    /// Inverse hyperbolic sine function.
+    ///
+    /// ```
+    /// let x = 1.0_f64;
+    /// let f = x.sinh().asinh();
+    ///
+    /// let abs_difference = (f - x).abs();
+    ///
+    /// assert!(abs_difference < 1.0e-10);
+    /// ```
+    #[inline]
+    pub fn asinh(self) -> f64 {
+        if self == NEG_INFINITY {
+            NEG_INFINITY
+        } else {
+            (self + ((self * self) + 1.0).sqrt()).ln()
+        }
+    }
+
+    /// Inverse hyperbolic cosine function.
+    ///
+    /// ```
+    /// let x = 1.0_f64;
+    /// let f = x.cosh().acosh();
+    ///
+    /// let abs_difference = (f - x).abs();
+    ///
+    /// assert!(abs_difference < 1.0e-10);
+    /// ```
+    #[inline]
+    pub fn acosh(self) -> f64 {
+        match self {
+            x if x < 1.0 => NAN,
+            x => (x + ((x * x) - 1.0).sqrt()).ln(),
+        }
+    }
+
+    /// Inverse hyperbolic tangent function.
+    ///
+    /// ```
+    /// use std::f64;
+    ///
+    /// let e = f64::consts::E;
+    /// let f = e.tanh().atanh();
+    ///
+    /// let abs_difference = (f - e).abs();
+    ///
+    /// assert!(abs_difference < 1.0e-10);
+    /// ```
+    #[inline]
+    pub fn atanh(self) -> f64 {
+        0.5 * ((2.0 * self) / (1.0 - self)).ln_1p()
+    }
+
+    // Solaris/Illumos requires a wrapper around log, log2, and log10 functions
+    // because of their non-standard behavior (e.g. log(-n) returns -Inf instead
+    // of expected NaN).
+    fn log_wrapper<F: Fn(f64) -> f64>(self, log_fn: F) -> f64 {
+        if !cfg!(target_os = "solaris") {
+            log_fn(self)
+        } else {
+            if self.is_finite() {
+                if self > 0.0 {
+                    log_fn(self)
+                } else if self == 0.0 {
+                    NEG_INFINITY // log(0) = -Inf
+                } else {
+                    NAN // log(-n) = NaN
+                }
+            } else if self.is_nan() {
+                self // log(NaN) = NaN
+            } else if self > 0.0 {
+                self // log(Inf) = Inf
+            } else {
+                NAN // log(-Inf) = NaN
+            }
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use f64;
+    use f64::*;
+    use num::*;
+    use num::FpCategory as Fp;
+
+    #[test]
+    fn test_num_f64() {
+        test_num(10f64, 2f64);
+    }
+
+    #[test]
+    fn test_min_nan() {
+        assert_eq!(NAN.min(2.0), 2.0);
+        assert_eq!(2.0f64.min(NAN), 2.0);
+    }
+
+    #[test]
+    fn test_max_nan() {
+        assert_eq!(NAN.max(2.0), 2.0);
+        assert_eq!(2.0f64.max(NAN), 2.0);
+    }
+
+    #[test]
+    fn test_nan() {
+        let nan: f64 = NAN;
+        assert!(nan.is_nan());
+        assert!(!nan.is_infinite());
+        assert!(!nan.is_finite());
+        assert!(!nan.is_normal());
+        assert!(!nan.is_sign_positive());
+        assert!(!nan.is_sign_negative());
+        assert_eq!(Fp::Nan, nan.classify());
+    }
+
+    #[test]
+    fn test_infinity() {
+        let inf: f64 = INFINITY;
+        assert!(inf.is_infinite());
+        assert!(!inf.is_finite());
+        assert!(inf.is_sign_positive());
+        assert!(!inf.is_sign_negative());
+        assert!(!inf.is_nan());
+        assert!(!inf.is_normal());
+        assert_eq!(Fp::Infinite, inf.classify());
+    }
+
+    #[test]
+    fn test_neg_infinity() {
+        let neg_inf: f64 = NEG_INFINITY;
+        assert!(neg_inf.is_infinite());
+        assert!(!neg_inf.is_finite());
+        assert!(!neg_inf.is_sign_positive());
+        assert!(neg_inf.is_sign_negative());
+        assert!(!neg_inf.is_nan());
+        assert!(!neg_inf.is_normal());
+        assert_eq!(Fp::Infinite, neg_inf.classify());
+    }
+
+    #[test]
+    fn test_zero() {
+        let zero: f64 = 0.0f64;
+        assert_eq!(0.0, zero);
+        assert!(!zero.is_infinite());
+        assert!(zero.is_finite());
+        assert!(zero.is_sign_positive());
+        assert!(!zero.is_sign_negative());
+        assert!(!zero.is_nan());
+        assert!(!zero.is_normal());
+        assert_eq!(Fp::Zero, zero.classify());
+    }
+
+    #[test]
+    fn test_neg_zero() {
+        let neg_zero: f64 = -0.0;
+        assert_eq!(0.0, neg_zero);
+        assert!(!neg_zero.is_infinite());
+        assert!(neg_zero.is_finite());
+        assert!(!neg_zero.is_sign_positive());
+        assert!(neg_zero.is_sign_negative());
+        assert!(!neg_zero.is_nan());
+        assert!(!neg_zero.is_normal());
+        assert_eq!(Fp::Zero, neg_zero.classify());
+    }
+
+    #[test]
+    fn test_one() {
+        let one: f64 = 1.0f64;
+        assert_eq!(1.0, one);
+        assert!(!one.is_infinite());
+        assert!(one.is_finite());
+        assert!(one.is_sign_positive());
+        assert!(!one.is_sign_negative());
+        assert!(!one.is_nan());
+        assert!(one.is_normal());
+        assert_eq!(Fp::Normal, one.classify());
+    }
+
+    #[test]
+    fn test_is_nan() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert!(nan.is_nan());
+        assert!(!0.0f64.is_nan());
+        assert!(!5.3f64.is_nan());
+        assert!(!(-10.732f64).is_nan());
+        assert!(!inf.is_nan());
+        assert!(!neg_inf.is_nan());
+    }
+
+    #[test]
+    fn test_is_infinite() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert!(!nan.is_infinite());
+        assert!(inf.is_infinite());
+        assert!(neg_inf.is_infinite());
+        assert!(!0.0f64.is_infinite());
+        assert!(!42.8f64.is_infinite());
+        assert!(!(-109.2f64).is_infinite());
+    }
+
+    #[test]
+    fn test_is_finite() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert!(!nan.is_finite());
+        assert!(!inf.is_finite());
+        assert!(!neg_inf.is_finite());
+        assert!(0.0f64.is_finite());
+        assert!(42.8f64.is_finite());
+        assert!((-109.2f64).is_finite());
+    }
+
+    #[test]
+    fn test_is_normal() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let zero: f64 = 0.0f64;
+        let neg_zero: f64 = -0.0;
+        assert!(!nan.is_normal());
+        assert!(!inf.is_normal());
+        assert!(!neg_inf.is_normal());
+        assert!(!zero.is_normal());
+        assert!(!neg_zero.is_normal());
+        assert!(1f64.is_normal());
+        assert!(1e-307f64.is_normal());
+        assert!(!1e-308f64.is_normal());
+    }
+
+    #[test]
+    fn test_classify() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let zero: f64 = 0.0f64;
+        let neg_zero: f64 = -0.0;
+        assert_eq!(nan.classify(), Fp::Nan);
+        assert_eq!(inf.classify(), Fp::Infinite);
+        assert_eq!(neg_inf.classify(), Fp::Infinite);
+        assert_eq!(zero.classify(), Fp::Zero);
+        assert_eq!(neg_zero.classify(), Fp::Zero);
+        assert_eq!(1e-307f64.classify(), Fp::Normal);
+        assert_eq!(1e-308f64.classify(), Fp::Subnormal);
+    }
+
+    #[test]
+    #[allow(deprecated)]
+    fn test_integer_decode() {
+        assert_eq!(3.14159265359f64.integer_decode(),
+                   (7074237752028906, -51, 1));
+        assert_eq!((-8573.5918555f64).integer_decode(),
+                   (4713381968463931, -39, -1));
+        assert_eq!(2f64.powf(100.0).integer_decode(), (4503599627370496, 48, 1));
+        assert_eq!(0f64.integer_decode(), (0, -1075, 1));
+        assert_eq!((-0f64).integer_decode(), (0, -1075, -1));
+        assert_eq!(INFINITY.integer_decode(), (4503599627370496, 972, 1));
+        assert_eq!(NEG_INFINITY.integer_decode(), (4503599627370496, 972, -1));
+
+        // Ignore the "sign" (quiet / signalling flag) of NAN.
+        // It can vary between runtime operations and LLVM folding.
+        let (nan_m, nan_e, _nan_s) = NAN.integer_decode();
+        assert_eq!((nan_m, nan_e), (6755399441055744, 972));
+    }
+
+    #[test]
+    fn test_floor() {
+        assert_approx_eq!(1.0f64.floor(), 1.0f64);
+        assert_approx_eq!(1.3f64.floor(), 1.0f64);
+        assert_approx_eq!(1.5f64.floor(), 1.0f64);
+        assert_approx_eq!(1.7f64.floor(), 1.0f64);
+        assert_approx_eq!(0.0f64.floor(), 0.0f64);
+        assert_approx_eq!((-0.0f64).floor(), -0.0f64);
+        assert_approx_eq!((-1.0f64).floor(), -1.0f64);
+        assert_approx_eq!((-1.3f64).floor(), -2.0f64);
+        assert_approx_eq!((-1.5f64).floor(), -2.0f64);
+        assert_approx_eq!((-1.7f64).floor(), -2.0f64);
+    }
+
+    #[test]
+    fn test_ceil() {
+        assert_approx_eq!(1.0f64.ceil(), 1.0f64);
+        assert_approx_eq!(1.3f64.ceil(), 2.0f64);
+        assert_approx_eq!(1.5f64.ceil(), 2.0f64);
+        assert_approx_eq!(1.7f64.ceil(), 2.0f64);
+        assert_approx_eq!(0.0f64.ceil(), 0.0f64);
+        assert_approx_eq!((-0.0f64).ceil(), -0.0f64);
+        assert_approx_eq!((-1.0f64).ceil(), -1.0f64);
+        assert_approx_eq!((-1.3f64).ceil(), -1.0f64);
+        assert_approx_eq!((-1.5f64).ceil(), -1.0f64);
+        assert_approx_eq!((-1.7f64).ceil(), -1.0f64);
+    }
+
+    #[test]
+    fn test_round() {
+        assert_approx_eq!(1.0f64.round(), 1.0f64);
+        assert_approx_eq!(1.3f64.round(), 1.0f64);
+        assert_approx_eq!(1.5f64.round(), 2.0f64);
+        assert_approx_eq!(1.7f64.round(), 2.0f64);
+        assert_approx_eq!(0.0f64.round(), 0.0f64);
+        assert_approx_eq!((-0.0f64).round(), -0.0f64);
+        assert_approx_eq!((-1.0f64).round(), -1.0f64);
+        assert_approx_eq!((-1.3f64).round(), -1.0f64);
+        assert_approx_eq!((-1.5f64).round(), -2.0f64);
+        assert_approx_eq!((-1.7f64).round(), -2.0f64);
+    }
+
+    #[test]
+    fn test_trunc() {
+        assert_approx_eq!(1.0f64.trunc(), 1.0f64);
+        assert_approx_eq!(1.3f64.trunc(), 1.0f64);
+        assert_approx_eq!(1.5f64.trunc(), 1.0f64);
+        assert_approx_eq!(1.7f64.trunc(), 1.0f64);
+        assert_approx_eq!(0.0f64.trunc(), 0.0f64);
+        assert_approx_eq!((-0.0f64).trunc(), -0.0f64);
+        assert_approx_eq!((-1.0f64).trunc(), -1.0f64);
+        assert_approx_eq!((-1.3f64).trunc(), -1.0f64);
+        assert_approx_eq!((-1.5f64).trunc(), -1.0f64);
+        assert_approx_eq!((-1.7f64).trunc(), -1.0f64);
+    }
+
+    #[test]
+    fn test_fract() {
+        assert_approx_eq!(1.0f64.fract(), 0.0f64);
+        assert_approx_eq!(1.3f64.fract(), 0.3f64);
+        assert_approx_eq!(1.5f64.fract(), 0.5f64);
+        assert_approx_eq!(1.7f64.fract(), 0.7f64);
+        assert_approx_eq!(0.0f64.fract(), 0.0f64);
+        assert_approx_eq!((-0.0f64).fract(), -0.0f64);
+        assert_approx_eq!((-1.0f64).fract(), -0.0f64);
+        assert_approx_eq!((-1.3f64).fract(), -0.3f64);
+        assert_approx_eq!((-1.5f64).fract(), -0.5f64);
+        assert_approx_eq!((-1.7f64).fract(), -0.7f64);
+    }
+
+    #[test]
+    fn test_abs() {
+        assert_eq!(INFINITY.abs(), INFINITY);
+        assert_eq!(1f64.abs(), 1f64);
+        assert_eq!(0f64.abs(), 0f64);
+        assert_eq!((-0f64).abs(), 0f64);
+        assert_eq!((-1f64).abs(), 1f64);
+        assert_eq!(NEG_INFINITY.abs(), INFINITY);
+        assert_eq!((1f64 / NEG_INFINITY).abs(), 0f64);
+        assert!(NAN.abs().is_nan());
+    }
+
+    #[test]
+    fn test_signum() {
+        assert_eq!(INFINITY.signum(), 1f64);
+        assert_eq!(1f64.signum(), 1f64);
+        assert_eq!(0f64.signum(), 1f64);
+        assert_eq!((-0f64).signum(), -1f64);
+        assert_eq!((-1f64).signum(), -1f64);
+        assert_eq!(NEG_INFINITY.signum(), -1f64);
+        assert_eq!((1f64 / NEG_INFINITY).signum(), -1f64);
+        assert!(NAN.signum().is_nan());
+    }
+
+    #[test]
+    fn test_is_sign_positive() {
+        assert!(INFINITY.is_sign_positive());
+        assert!(1f64.is_sign_positive());
+        assert!(0f64.is_sign_positive());
+        assert!(!(-0f64).is_sign_positive());
+        assert!(!(-1f64).is_sign_positive());
+        assert!(!NEG_INFINITY.is_sign_positive());
+        assert!(!(1f64 / NEG_INFINITY).is_sign_positive());
+        assert!(!NAN.is_sign_positive());
+    }
+
+    #[test]
+    fn test_is_sign_negative() {
+        assert!(!INFINITY.is_sign_negative());
+        assert!(!1f64.is_sign_negative());
+        assert!(!0f64.is_sign_negative());
+        assert!((-0f64).is_sign_negative());
+        assert!((-1f64).is_sign_negative());
+        assert!(NEG_INFINITY.is_sign_negative());
+        assert!((1f64 / NEG_INFINITY).is_sign_negative());
+        assert!(!NAN.is_sign_negative());
+    }
+
+    #[test]
+    fn test_mul_add() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_approx_eq!(12.3f64.mul_add(4.5, 6.7), 62.05);
+        assert_approx_eq!((-12.3f64).mul_add(-4.5, -6.7), 48.65);
+        assert_approx_eq!(0.0f64.mul_add(8.9, 1.2), 1.2);
+        assert_approx_eq!(3.4f64.mul_add(-0.0, 5.6), 5.6);
+        assert!(nan.mul_add(7.8, 9.0).is_nan());
+        assert_eq!(inf.mul_add(7.8, 9.0), inf);
+        assert_eq!(neg_inf.mul_add(7.8, 9.0), neg_inf);
+        assert_eq!(8.9f64.mul_add(inf, 3.2), inf);
+        assert_eq!((-3.2f64).mul_add(2.4, neg_inf), neg_inf);
+    }
+
+    #[test]
+    fn test_recip() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(1.0f64.recip(), 1.0);
+        assert_eq!(2.0f64.recip(), 0.5);
+        assert_eq!((-0.4f64).recip(), -2.5);
+        assert_eq!(0.0f64.recip(), inf);
+        assert!(nan.recip().is_nan());
+        assert_eq!(inf.recip(), 0.0);
+        assert_eq!(neg_inf.recip(), 0.0);
+    }
+
+    #[test]
+    fn test_powi() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(1.0f64.powi(1), 1.0);
+        assert_approx_eq!((-3.1f64).powi(2), 9.61);
+        assert_approx_eq!(5.9f64.powi(-2), 0.028727);
+        assert_eq!(8.3f64.powi(0), 1.0);
+        assert!(nan.powi(2).is_nan());
+        assert_eq!(inf.powi(3), inf);
+        assert_eq!(neg_inf.powi(2), inf);
+    }
+
+    #[test]
+    fn test_powf() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(1.0f64.powf(1.0), 1.0);
+        assert_approx_eq!(3.4f64.powf(4.5), 246.408183);
+        assert_approx_eq!(2.7f64.powf(-3.2), 0.041652);
+        assert_approx_eq!((-3.1f64).powf(2.0), 9.61);
+        assert_approx_eq!(5.9f64.powf(-2.0), 0.028727);
+        assert_eq!(8.3f64.powf(0.0), 1.0);
+        assert!(nan.powf(2.0).is_nan());
+        assert_eq!(inf.powf(2.0), inf);
+        assert_eq!(neg_inf.powf(3.0), neg_inf);
+    }
+
+    #[test]
+    fn test_sqrt_domain() {
+        assert!(NAN.sqrt().is_nan());
+        assert!(NEG_INFINITY.sqrt().is_nan());
+        assert!((-1.0f64).sqrt().is_nan());
+        assert_eq!((-0.0f64).sqrt(), -0.0);
+        assert_eq!(0.0f64.sqrt(), 0.0);
+        assert_eq!(1.0f64.sqrt(), 1.0);
+        assert_eq!(INFINITY.sqrt(), INFINITY);
+    }
+
+    #[test]
+    fn test_exp() {
+        assert_eq!(1.0, 0.0f64.exp());
+        assert_approx_eq!(2.718282, 1.0f64.exp());
+        assert_approx_eq!(148.413159, 5.0f64.exp());
+
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(inf, inf.exp());
+        assert_eq!(0.0, neg_inf.exp());
+        assert!(nan.exp().is_nan());
+    }
+
+    #[test]
+    fn test_exp2() {
+        assert_eq!(32.0, 5.0f64.exp2());
+        assert_eq!(1.0, 0.0f64.exp2());
+
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(inf, inf.exp2());
+        assert_eq!(0.0, neg_inf.exp2());
+        assert!(nan.exp2().is_nan());
+    }
+
+    #[test]
+    fn test_ln() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_approx_eq!(1.0f64.exp().ln(), 1.0);
+        assert!(nan.ln().is_nan());
+        assert_eq!(inf.ln(), inf);
+        assert!(neg_inf.ln().is_nan());
+        assert!((-2.3f64).ln().is_nan());
+        assert_eq!((-0.0f64).ln(), neg_inf);
+        assert_eq!(0.0f64.ln(), neg_inf);
+        assert_approx_eq!(4.0f64.ln(), 1.386294);
+    }
+
+    #[test]
+    fn test_log() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(10.0f64.log(10.0), 1.0);
+        assert_approx_eq!(2.3f64.log(3.5), 0.664858);
+        assert_eq!(1.0f64.exp().log(1.0f64.exp()), 1.0);
+        assert!(1.0f64.log(1.0).is_nan());
+        assert!(1.0f64.log(-13.9).is_nan());
+        assert!(nan.log(2.3).is_nan());
+        assert_eq!(inf.log(10.0), inf);
+        assert!(neg_inf.log(8.8).is_nan());
+        assert!((-2.3f64).log(0.1).is_nan());
+        assert_eq!((-0.0f64).log(2.0), neg_inf);
+        assert_eq!(0.0f64.log(7.0), neg_inf);
+    }
+
+    #[test]
+    fn test_log2() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_approx_eq!(10.0f64.log2(), 3.321928);
+        assert_approx_eq!(2.3f64.log2(), 1.201634);
+        assert_approx_eq!(1.0f64.exp().log2(), 1.442695);
+        assert!(nan.log2().is_nan());
+        assert_eq!(inf.log2(), inf);
+        assert!(neg_inf.log2().is_nan());
+        assert!((-2.3f64).log2().is_nan());
+        assert_eq!((-0.0f64).log2(), neg_inf);
+        assert_eq!(0.0f64.log2(), neg_inf);
+    }
+
+    #[test]
+    fn test_log10() {
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(10.0f64.log10(), 1.0);
+        assert_approx_eq!(2.3f64.log10(), 0.361728);
+        assert_approx_eq!(1.0f64.exp().log10(), 0.434294);
+        assert_eq!(1.0f64.log10(), 0.0);
+        assert!(nan.log10().is_nan());
+        assert_eq!(inf.log10(), inf);
+        assert!(neg_inf.log10().is_nan());
+        assert!((-2.3f64).log10().is_nan());
+        assert_eq!((-0.0f64).log10(), neg_inf);
+        assert_eq!(0.0f64.log10(), neg_inf);
+    }
+
+    #[test]
+    fn test_to_degrees() {
+        let pi: f64 = consts::PI;
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(0.0f64.to_degrees(), 0.0);
+        assert_approx_eq!((-5.8f64).to_degrees(), -332.315521);
+        assert_eq!(pi.to_degrees(), 180.0);
+        assert!(nan.to_degrees().is_nan());
+        assert_eq!(inf.to_degrees(), inf);
+        assert_eq!(neg_inf.to_degrees(), neg_inf);
+    }
+
+    #[test]
+    fn test_to_radians() {
+        let pi: f64 = consts::PI;
+        let nan: f64 = NAN;
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        assert_eq!(0.0f64.to_radians(), 0.0);
+        assert_approx_eq!(154.6f64.to_radians(), 2.698279);
+        assert_approx_eq!((-332.31f64).to_radians(), -5.799903);
+        assert_eq!(180.0f64.to_radians(), pi);
+        assert!(nan.to_radians().is_nan());
+        assert_eq!(inf.to_radians(), inf);
+        assert_eq!(neg_inf.to_radians(), neg_inf);
+    }
+
+    #[test]
+    #[allow(deprecated)]
+    fn test_ldexp() {
+        let f1 = 2.0f64.powi(-123);
+        let f2 = 2.0f64.powi(-111);
+        let f3 = 1.75 * 2.0f64.powi(-12);
+        assert_eq!(f64::ldexp(1f64, -123), f1);
+        assert_eq!(f64::ldexp(1f64, -111), f2);
+        assert_eq!(f64::ldexp(1.75f64, -12), f3);
+
+        assert_eq!(f64::ldexp(0f64, -123), 0f64);
+        assert_eq!(f64::ldexp(-0f64, -123), -0f64);
+
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(f64::ldexp(inf, -123), inf);
+        assert_eq!(f64::ldexp(neg_inf, -123), neg_inf);
+        assert!(f64::ldexp(nan, -123).is_nan());
+    }
+
+    #[test]
+    #[allow(deprecated)]
+    fn test_frexp() {
+        let f1 = 2.0f64.powi(-123);
+        let f2 = 2.0f64.powi(-111);
+        let f3 = 1.75 * 2.0f64.powi(-123);
+        let (x1, exp1) = f1.frexp();
+        let (x2, exp2) = f2.frexp();
+        let (x3, exp3) = f3.frexp();
+        assert_eq!((x1, exp1), (0.5f64, -122));
+        assert_eq!((x2, exp2), (0.5f64, -110));
+        assert_eq!((x3, exp3), (0.875f64, -122));
+        assert_eq!(f64::ldexp(x1, exp1), f1);
+        assert_eq!(f64::ldexp(x2, exp2), f2);
+        assert_eq!(f64::ldexp(x3, exp3), f3);
+
+        assert_eq!(0f64.frexp(), (0f64, 0));
+        assert_eq!((-0f64).frexp(), (-0f64, 0));
+    }
+
+    #[test]
+    #[cfg_attr(windows, ignore)]
+    // FIXME #8755
+    #[allow(deprecated)]
+    fn test_frexp_nowin() {
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(match inf.frexp() {
+                       (x, _) => x,
+                   },
+                   inf);
+        assert_eq!(match neg_inf.frexp() {
+                       (x, _) => x,
+                   },
+                   neg_inf);
+        assert!(match nan.frexp() {
+            (x, _) => x.is_nan(),
+        })
+    }
+
+    #[test]
+    fn test_asinh() {
+        assert_eq!(0.0f64.asinh(), 0.0f64);
+        assert_eq!((-0.0f64).asinh(), -0.0f64);
+
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(inf.asinh(), inf);
+        assert_eq!(neg_inf.asinh(), neg_inf);
+        assert!(nan.asinh().is_nan());
+        assert_approx_eq!(2.0f64.asinh(), 1.443635475178810342493276740273105f64);
+        assert_approx_eq!((-2.0f64).asinh(), -1.443635475178810342493276740273105f64);
+    }
+
+    #[test]
+    fn test_acosh() {
+        assert_eq!(1.0f64.acosh(), 0.0f64);
+        assert!(0.999f64.acosh().is_nan());
+
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(inf.acosh(), inf);
+        assert!(neg_inf.acosh().is_nan());
+        assert!(nan.acosh().is_nan());
+        assert_approx_eq!(2.0f64.acosh(), 1.31695789692481670862504634730796844f64);
+        assert_approx_eq!(3.0f64.acosh(), 1.76274717403908605046521864995958461f64);
+    }
+
+    #[test]
+    fn test_atanh() {
+        assert_eq!(0.0f64.atanh(), 0.0f64);
+        assert_eq!((-0.0f64).atanh(), -0.0f64);
+
+        let inf: f64 = INFINITY;
+        let neg_inf: f64 = NEG_INFINITY;
+        let nan: f64 = NAN;
+        assert_eq!(1.0f64.atanh(), inf);
+        assert_eq!((-1.0f64).atanh(), neg_inf);
+        assert!(2f64.atanh().atanh().is_nan());
+        assert!((-2f64).atanh().atanh().is_nan());
+        assert!(inf.atanh().is_nan());
+        assert!(neg_inf.atanh().is_nan());
+        assert!(nan.atanh().is_nan());
+        assert_approx_eq!(0.5f64.atanh(), 0.54930614433405484569762261846126285f64);
+        assert_approx_eq!((-0.5f64).atanh(), -0.54930614433405484569762261846126285f64);
+    }
+
+    #[test]
+    fn test_real_consts() {
+        use super::consts;
+        let pi: f64 = consts::PI;
+        let frac_pi_2: f64 = consts::FRAC_PI_2;
+        let frac_pi_3: f64 = consts::FRAC_PI_3;
+        let frac_pi_4: f64 = consts::FRAC_PI_4;
+        let frac_pi_6: f64 = consts::FRAC_PI_6;
+        let frac_pi_8: f64 = consts::FRAC_PI_8;
+        let frac_1_pi: f64 = consts::FRAC_1_PI;
+        let frac_2_pi: f64 = consts::FRAC_2_PI;
+        let frac_2_sqrtpi: f64 = consts::FRAC_2_SQRT_PI;
+        let sqrt2: f64 = consts::SQRT_2;
+        let frac_1_sqrt2: f64 = consts::FRAC_1_SQRT_2;
+        let e: f64 = consts::E;
+        let log2_e: f64 = consts::LOG2_E;
+        let log10_e: f64 = consts::LOG10_E;
+        let ln_2: f64 = consts::LN_2;
+        let ln_10: f64 = consts::LN_10;
+
+        assert_approx_eq!(frac_pi_2, pi / 2f64);
+        assert_approx_eq!(frac_pi_3, pi / 3f64);
+        assert_approx_eq!(frac_pi_4, pi / 4f64);
+        assert_approx_eq!(frac_pi_6, pi / 6f64);
+        assert_approx_eq!(frac_pi_8, pi / 8f64);
+        assert_approx_eq!(frac_1_pi, 1f64 / pi);
+        assert_approx_eq!(frac_2_pi, 2f64 / pi);
+        assert_approx_eq!(frac_2_sqrtpi, 2f64 / pi.sqrt());
+        assert_approx_eq!(sqrt2, 2f64.sqrt());
+        assert_approx_eq!(frac_1_sqrt2, 1f64 / 2f64.sqrt());
+        assert_approx_eq!(log2_e, e.log2());
+        assert_approx_eq!(log10_e, e.log10());
+        assert_approx_eq!(ln_2, 2f64.ln());
+        assert_approx_eq!(ln_10, 10f64.ln());
+    }
+}
diff --git a/std/src/num/mod.rs b/std/src/num/mod.rs
new file mode 100644
index 0000000..1aa23b8
--- /dev/null
+++ b/std/src/num/mod.rs
@@ -0,0 +1,293 @@
+// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Additional functionality for numerics.
+//!
+//! This module provides some extra types that are useful when doing numerical
+//! work. See the individual documentation for each piece for more information.
+
+#![allow(missing_docs)]
+
+#[allow(deprecated)]
+pub use core::num::{Zero, One};
+pub use core::num::{FpCategory, ParseIntError, ParseFloatError, TryFromIntError};
+pub use core::num::Wrapping;
+
+#[cfg(test)]
+use fmt;
+#[cfg(test)]
+use ops::{Add, Sub, Mul, Div, Rem};
+
+/// Helper function for testing numeric operations
+#[cfg(test)]
+pub fn test_num<T>(ten: T, two: T) where
+    T: PartialEq
+     + Add<Output=T> + Sub<Output=T>
+     + Mul<Output=T> + Div<Output=T>
+     + Rem<Output=T> + fmt::Debug
+     + Copy
+{
+    assert_eq!(ten.add(two), ten + two);
+    assert_eq!(ten.sub(two), ten - two);
+    assert_eq!(ten.mul(two), ten * two);
+    assert_eq!(ten.div(two), ten / two);
+    assert_eq!(ten.rem(two), ten % two);
+}
+
+#[cfg(test)]
+mod tests {
+    use u8;
+    use u16;
+    use u32;
+    use u64;
+    use usize;
+    use ops::Mul;
+
+    #[test]
+    fn test_saturating_add_uint() {
+        use usize::MAX;
+        assert_eq!(3_usize.saturating_add(5_usize), 8_usize);
+        assert_eq!(3_usize.saturating_add(MAX - 1), MAX);
+        assert_eq!(MAX.saturating_add(MAX), MAX);
+        assert_eq!((MAX - 2).saturating_add(1), MAX - 1);
+    }
+
+    #[test]
+    fn test_saturating_sub_uint() {
+        use usize::MAX;
+        assert_eq!(5_usize.saturating_sub(3_usize), 2_usize);
+        assert_eq!(3_usize.saturating_sub(5_usize), 0_usize);
+        assert_eq!(0_usize.saturating_sub(1_usize), 0_usize);
+        assert_eq!((MAX - 1).saturating_sub(MAX), 0);
+    }
+
+    #[test]
+    fn test_saturating_add_int() {
+        use isize::{MIN, MAX};
+        assert_eq!(3i32.saturating_add(5), 8);
+        assert_eq!(3isize.saturating_add(MAX - 1), MAX);
+        assert_eq!(MAX.saturating_add(MAX), MAX);
+        assert_eq!((MAX - 2).saturating_add(1), MAX - 1);
+        assert_eq!(3i32.saturating_add(-5), -2);
+        assert_eq!(MIN.saturating_add(-1), MIN);
+        assert_eq!((-2isize).saturating_add(-MAX), MIN);
+    }
+
+    #[test]
+    fn test_saturating_sub_int() {
+        use isize::{MIN, MAX};
+        assert_eq!(3i32.saturating_sub(5), -2);
+        assert_eq!(MIN.saturating_sub(1), MIN);
+        assert_eq!((-2isize).saturating_sub(MAX), MIN);
+        assert_eq!(3i32.saturating_sub(-5), 8);
+        assert_eq!(3isize.saturating_sub(-(MAX - 1)), MAX);
+        assert_eq!(MAX.saturating_sub(-MAX), MAX);
+        assert_eq!((MAX - 2).saturating_sub(-1), MAX - 1);
+    }
+
+    #[test]
+    fn test_checked_add() {
+        let five_less = usize::MAX - 5;
+        assert_eq!(five_less.checked_add(0), Some(usize::MAX - 5));
+        assert_eq!(five_less.checked_add(1), Some(usize::MAX - 4));
+        assert_eq!(five_less.checked_add(2), Some(usize::MAX - 3));
+        assert_eq!(five_less.checked_add(3), Some(usize::MAX - 2));
+        assert_eq!(five_less.checked_add(4), Some(usize::MAX - 1));
+        assert_eq!(five_less.checked_add(5), Some(usize::MAX));
+        assert_eq!(five_less.checked_add(6), None);
+        assert_eq!(five_less.checked_add(7), None);
+    }
+
+    #[test]
+    fn test_checked_sub() {
+        assert_eq!(5_usize.checked_sub(0), Some(5));
+        assert_eq!(5_usize.checked_sub(1), Some(4));
+        assert_eq!(5_usize.checked_sub(2), Some(3));
+        assert_eq!(5_usize.checked_sub(3), Some(2));
+        assert_eq!(5_usize.checked_sub(4), Some(1));
+        assert_eq!(5_usize.checked_sub(5), Some(0));
+        assert_eq!(5_usize.checked_sub(6), None);
+        assert_eq!(5_usize.checked_sub(7), None);
+    }
+
+    #[test]
+    fn test_checked_mul() {
+        let third = usize::MAX / 3;
+        assert_eq!(third.checked_mul(0), Some(0));
+        assert_eq!(third.checked_mul(1), Some(third));
+        assert_eq!(third.checked_mul(2), Some(third * 2));
+        assert_eq!(third.checked_mul(3), Some(third * 3));
+        assert_eq!(third.checked_mul(4), None);
+    }
+
+    macro_rules! test_is_power_of_two {
+        ($test_name:ident, $T:ident) => (
+            fn $test_name() {
+                #![test]
+                assert_eq!((0 as $T).is_power_of_two(), false);
+                assert_eq!((1 as $T).is_power_of_two(), true);
+                assert_eq!((2 as $T).is_power_of_two(), true);
+                assert_eq!((3 as $T).is_power_of_two(), false);
+                assert_eq!((4 as $T).is_power_of_two(), true);
+                assert_eq!((5 as $T).is_power_of_two(), false);
+                assert_eq!(($T::MAX / 2 + 1).is_power_of_two(), true);
+            }
+        )
+    }
+
+    test_is_power_of_two!{ test_is_power_of_two_u8, u8 }
+    test_is_power_of_two!{ test_is_power_of_two_u16, u16 }
+    test_is_power_of_two!{ test_is_power_of_two_u32, u32 }
+    test_is_power_of_two!{ test_is_power_of_two_u64, u64 }
+    test_is_power_of_two!{ test_is_power_of_two_uint, usize }
+
+    macro_rules! test_next_power_of_two {
+        ($test_name:ident, $T:ident) => (
+            fn $test_name() {
+                #![test]
+                assert_eq!((0 as $T).next_power_of_two(), 1);
+                let mut next_power = 1;
+                for i in 1 as $T..40 {
+                     assert_eq!(i.next_power_of_two(), next_power);
+                     if i == next_power { next_power *= 2 }
+                }
+            }
+        )
+    }
+
+    test_next_power_of_two! { test_next_power_of_two_u8, u8 }
+    test_next_power_of_two! { test_next_power_of_two_u16, u16 }
+    test_next_power_of_two! { test_next_power_of_two_u32, u32 }
+    test_next_power_of_two! { test_next_power_of_two_u64, u64 }
+    test_next_power_of_two! { test_next_power_of_two_uint, usize }
+
+    macro_rules! test_checked_next_power_of_two {
+        ($test_name:ident, $T:ident) => (
+            fn $test_name() {
+                #![test]
+                assert_eq!((0 as $T).checked_next_power_of_two(), Some(1));
+                assert!(($T::MAX / 2).checked_next_power_of_two().is_some());
+                assert_eq!(($T::MAX - 1).checked_next_power_of_two(), None);
+                assert_eq!($T::MAX.checked_next_power_of_two(), None);
+                let mut next_power = 1;
+                for i in 1 as $T..40 {
+                     assert_eq!(i.checked_next_power_of_two(), Some(next_power));
+                     if i == next_power { next_power *= 2 }
+                }
+            }
+        )
+    }
+
+    test_checked_next_power_of_two! { test_checked_next_power_of_two_u8, u8 }
+    test_checked_next_power_of_two! { test_checked_next_power_of_two_u16, u16 }
+    test_checked_next_power_of_two! { test_checked_next_power_of_two_u32, u32 }
+    test_checked_next_power_of_two! { test_checked_next_power_of_two_u64, u64 }
+    test_checked_next_power_of_two! { test_checked_next_power_of_two_uint, usize }
+
+    #[test]
+    fn test_pow() {
+        fn naive_pow<T: Mul<Output = T> + Copy>(one: T, base: T, exp: usize) -> T {
+            (0..exp).fold(one, |acc, _| acc * base)
+        }
+        macro_rules! assert_pow {
+            (($num:expr, $exp:expr) => $expected:expr) => {{
+                let result = $num.pow($exp);
+                assert_eq!(result, $expected);
+                assert_eq!(result, naive_pow(1, $num, $exp));
+            }}
+        }
+        assert_pow!((3u32,     0 ) => 1);
+        assert_pow!((5u32,     1 ) => 5);
+        assert_pow!((-4i32,    2 ) => 16);
+        assert_pow!((8u32,     3 ) => 512);
+        assert_pow!((2u64,     50) => 1125899906842624);
+    }
+
+    #[test]
+    fn test_uint_to_str_overflow() {
+        let mut u8_val: u8 = 255;
+        assert_eq!(u8_val.to_string(), "255");
+
+        u8_val = u8_val.wrapping_add(1);
+        assert_eq!(u8_val.to_string(), "0");
+
+        let mut u16_val: u16 = 65_535;
+        assert_eq!(u16_val.to_string(), "65535");
+
+        u16_val = u16_val.wrapping_add(1);
+        assert_eq!(u16_val.to_string(), "0");
+
+        let mut u32_val: u32 = 4_294_967_295;
+        assert_eq!(u32_val.to_string(), "4294967295");
+
+        u32_val = u32_val.wrapping_add(1);
+        assert_eq!(u32_val.to_string(), "0");
+
+        let mut u64_val: u64 = 18_446_744_073_709_551_615;
+        assert_eq!(u64_val.to_string(), "18446744073709551615");
+
+        u64_val = u64_val.wrapping_add(1);
+        assert_eq!(u64_val.to_string(), "0");
+    }
+
+    fn from_str<T: ::str::FromStr>(t: &str) -> Option<T> {
+        ::str::FromStr::from_str(t).ok()
+    }
+
+    #[test]
+    fn test_uint_from_str_overflow() {
+        let mut u8_val: u8 = 255;
+        assert_eq!(from_str::<u8>("255"), Some(u8_val));
+        assert_eq!(from_str::<u8>("256"), None);
+
+        u8_val = u8_val.wrapping_add(1);
+        assert_eq!(from_str::<u8>("0"), Some(u8_val));
+        assert_eq!(from_str::<u8>("-1"), None);
+
+        let mut u16_val: u16 = 65_535;
+        assert_eq!(from_str::<u16>("65535"), Some(u16_val));
+        assert_eq!(from_str::<u16>("65536"), None);
+
+        u16_val = u16_val.wrapping_add(1);
+        assert_eq!(from_str::<u16>("0"), Some(u16_val));
+        assert_eq!(from_str::<u16>("-1"), None);
+
+        let mut u32_val: u32 = 4_294_967_295;
+        assert_eq!(from_str::<u32>("4294967295"), Some(u32_val));
+        assert_eq!(from_str::<u32>("4294967296"), None);
+
+        u32_val = u32_val.wrapping_add(1);
+        assert_eq!(from_str::<u32>("0"), Some(u32_val));
+        assert_eq!(from_str::<u32>("-1"), None);
+
+        let mut u64_val: u64 = 18_446_744_073_709_551_615;
+        assert_eq!(from_str::<u64>("18446744073709551615"), Some(u64_val));
+        assert_eq!(from_str::<u64>("18446744073709551616"), None);
+
+        u64_val = u64_val.wrapping_add(1);
+        assert_eq!(from_str::<u64>("0"), Some(u64_val));
+        assert_eq!(from_str::<u64>("-1"), None);
+    }
+}
+
+
+#[cfg(test)]
+mod bench {
+    extern crate test;
+    use self::test::Bencher;
+
+    #[bench]
+    fn bench_pow_function(b: &mut Bencher) {
+        let v = (0..1024).collect::<Vec<u32>>();
+        b.iter(|| {
+            v.iter().fold(0u32, |old, new| old.pow(*new as u32));
+        });
+    }
+}
diff --git a/src/system/panicking.rs b/std/src/panicking.rs
index 9fb3e82..b02dd4f 100644
--- a/src/system/panicking.rs
+++ b/std/src/panicking.rs
@@ -11,11 +11,8 @@
 //! Implementation of various bits and pieces of the `panic!` macro and
 //! associated runtime pieces.
 
-use core::fmt::{self, Display, Write};
-use core::any::Any;
-
-use collections::String;
-use collections::boxed::Box;
+use fmt::{self, Display};
+use any::Any;
 
 ///The compiler wants this to be here. Otherwise it won't be happy. And we like happy compilers.
 #[lang = "eh_personality"]
@@ -36,6 +33,8 @@ extern fn panic_fmt(msg: fmt::Arguments, file: &'static str, line: u32) -> ! {
 #[inline(never)]
 #[cold]
 pub fn begin_panic_fmt(msg: &fmt::Arguments, file_line: &(&'static str, u32)) -> ! {
+    use fmt::Write;
+
     let mut s = String::new();
     let _ = s.write_fmt(*msg);
     begin_panic(s, file_line);
@@ -45,21 +44,13 @@ pub fn begin_panic_fmt(msg: &fmt::Arguments, file_line: &(&'static str, u32)) ->
 #[inline(never)]
 #[cold]
 pub fn begin_panic<M: Any + Send + Display>(msg: M, file_line: &(&'static str, u32)) -> ! {
-    use gfx::Screen;
-    use console::Console;
-
     let msg = Box::new(msg);
     let (file, line) = *file_line;
 
-    let mut error_top = Console::init(Screen::Top);
-    let mut error_bottom = Console::init(Screen::Bottom);
-
-    write!(error_top, "--------------------------------------------------").unwrap();
-    writeln!(error_top, "PANIC in {} at line {}:", file, line).unwrap();
-    writeln!(error_top, "    {}", msg).unwrap();
-    write!(error_top, "\x1b[29;00H--------------------------------------------------").unwrap();
-
-    write!(error_bottom, "").unwrap();     
+    println!("--------------------------------------------------");
+    println!("PANIC in {} at line {}:", file, line);
+    println!("    {}", msg);
+    println!("\x1b[29;00H--------------------------------------------------");
 
     loop {}
 }
diff --git a/src/system/path.rs b/std/src/path.rs
index 4894756..428296f 100644
--- a/src/system/path.rs
+++ b/std/src/path.rs
@@ -97,19 +97,19 @@
 //! normalization is possible to build on top of the components APIs,
 //! and will be included in this library in the near future.
 
-use std::ascii::*;
-use std::borrow::{Borrow, ToOwned, Cow};
-use std::cmp;
+use ascii::*;
+use borrow::{Borrow, ToOwned, Cow};
+use cmp;
 //use error::Error;
-use std::fmt;
+use fmt;
 //use fs;
-use std::hash::{Hash, Hasher};
+use hash::{Hash, Hasher};
 //use io;
-use std::mem;
-use std::ops::{self, Deref};
-use std::iter;
+use mem;
+use ops::{self, Deref};
+use iter;
 
-use std::ffi::{OsStr, OsString};
+use ffi::{OsStr, OsString};
 
 use self::platform::{is_sep_byte, is_verbatim_sep, MAIN_SEP_STR, parse_prefix};
 
@@ -132,7 +132,7 @@ use self::platform::{is_sep_byte, is_verbatim_sep, MAIN_SEP_STR, parse_prefix};
 
 mod platform {
     use super::Prefix;
-    use std::ffi::OsStr;
+    use ffi::OsStr;
 
     #[inline]
     pub fn is_sep_byte(b: u8) -> bool {
diff --git a/std/src/prelude/mod.rs b/std/src/prelude/mod.rs
new file mode 100644
index 0000000..a3a6d96
--- /dev/null
+++ b/std/src/prelude/mod.rs
@@ -0,0 +1 @@
+pub mod v1;
diff --git a/std/src/prelude/v1.rs b/std/src/prelude/v1.rs
new file mode 100644
index 0000000..e17d2ec
--- /dev/null
+++ b/std/src/prelude/v1.rs
@@ -0,0 +1,49 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! The first version of the prelude of The Rust Standard Library.
+
+// Reexported core operators
+#[doc(no_inline)]
+pub use marker::{Copy, Send, Sized, Sync};
+#[doc(no_inline)]
+pub use ops::{Drop, Fn, FnMut, FnOnce};
+
+// Reexported functions
+#[doc(no_inline)]
+pub use mem::drop;
+
+// Reexported types and traits
+#[doc(no_inline)]
+pub use boxed::Box;
+#[doc(no_inline)]
+pub use borrow::ToOwned;
+#[doc(no_inline)]
+pub use clone::Clone;
+#[doc(no_inline)]
+pub use cmp::{PartialEq, PartialOrd, Eq, Ord};
+#[doc(no_inline)]
+pub use convert::{AsRef, AsMut, Into, From};
+#[doc(no_inline)]
+pub use default::Default;
+#[doc(no_inline)]
+pub use iter::{Iterator, Extend, IntoIterator};
+#[doc(no_inline)]
+pub use iter::{DoubleEndedIterator, ExactSizeIterator};
+#[doc(no_inline)]
+pub use option::Option::{self, Some, None};
+#[doc(no_inline)]
+pub use result::Result::{self, Ok, Err};
+#[doc(no_inline)]
+pub use slice::SliceConcatExt;
+#[doc(no_inline)]
+pub use string::{String, ToString};
+#[doc(no_inline)]
+pub use vec::Vec;
diff --git a/std/src/rt.rs b/std/src/rt.rs
new file mode 100644
index 0000000..72f276b
--- /dev/null
+++ b/std/src/rt.rs
@@ -0,0 +1,30 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+//! Runtime services
+//!
+//! The `rt` module provides a narrow set of runtime services,
+//! including the global heap (exported in `heap`) and unwinding and
+//! backtrace support. The APIs in this module are highly unstable,
+//! and should be considered as private implementation details for the
+//! time being.
+
+use mem;
+
+// Reexport some of our utilities which are expected by other crates.
+pub use panicking::{begin_panic, begin_panic_fmt};
+
+//TODO: Handle argc/argv arguments
+#[lang = "start"]
+#[allow(unused_variables)]
+fn lang_start(main: *const u8, argc: isize, argv: *const *const u8) -> isize {
+    unsafe { mem::transmute::<_, fn()>(main)(); }
+    0
+}
diff --git a/std/src/sync/mod.rs b/std/src/sync/mod.rs
new file mode 100644
index 0000000..62152ed
--- /dev/null
+++ b/std/src/sync/mod.rs
@@ -0,0 +1,5 @@
+mod mutex;
+
+pub use self::mutex::{Mutex, MutexGuard};
+
+pub type LockResult<T> = Result<T, ()>;
diff --git a/std/src/sync/mutex.rs b/std/src/sync/mutex.rs
new file mode 100644
index 0000000..03ea729
--- /dev/null
+++ b/std/src/sync/mutex.rs
@@ -0,0 +1,92 @@
+use cell::UnsafeCell;
+use borrow::{Borrow, BorrowMut};
+use ops::{Deref, DerefMut};
+
+use super::LockResult;
+
+use libctru::synchronization::*;
+
+/// A mutex based on libctru's LightLock primitive
+pub struct Mutex<T: ?Sized> {
+    mutex: Box<LightLock>,
+    data: UnsafeCell<T>,
+}
+
+/// Mutex guard
+#[must_use]
+pub struct MutexGuard<'a, T: ?Sized + 'a> {
+    inner: &'a Mutex<T>,
+}
+
+// NOTE: This is used when implementing condvar, which hasn't been done yet
+#[allow(dead_code)]
+pub fn guard_lock<'a, T: ?Sized + 'a>(guard: &'a MutexGuard<'a, T>) -> &'a LightLock {
+    &guard.inner.mutex
+}
+
+impl<T> Mutex<T> {
+    pub fn new(t: T) -> Mutex<T> {
+        unsafe {
+            let mut mutex = Box::new(0);
+            LightLock_Init(mutex.borrow_mut());
+            Mutex {
+                mutex: mutex,
+                data: UnsafeCell::new(t),
+            }
+        }
+    }
+
+    pub fn into_inner(self) -> T {
+        unsafe { self.data.into_inner() }
+    }
+}
+
+impl<T: ?Sized> Mutex<T> {
+    pub fn lock(&self) -> MutexGuard<T> {
+        unsafe {
+            LightLock_Lock(self.mutex.borrow());
+            MutexGuard { inner: self }
+        }
+    }
+
+    pub fn try_lock(&self) -> LockResult<MutexGuard<T>> {
+        unsafe {
+            let locked = LightLock_TryLock(self.mutex.borrow());
+            if locked == 0 {
+                Ok(MutexGuard { inner: self })
+            } else {
+                Err(())
+            }
+        }
+    }
+
+    pub fn get_mut(&mut self) -> &mut T {
+        unsafe { &mut *self.data.get() }
+    }
+}
+
+unsafe impl<T: ?Sized + Send> Send for Mutex<T> {}
+unsafe impl<T: ?Sized + Send> Sync for Mutex<T> {}
+
+impl<'a, T: ?Sized> Drop for MutexGuard<'a, T> {
+    fn drop(&mut self) {
+        unsafe { LightLock_Unlock(self.inner.mutex.borrow());
+        }
+    }
+}
+
+impl<'mutex, T: ?Sized> Deref for MutexGuard<'mutex, T> {
+    type Target = T;
+
+    fn deref(&self) -> &T {
+        unsafe { &*self.inner.data.get() }
+    }
+}
+
+impl<'mutex, T: ?Sized> DerefMut for MutexGuard<'mutex, T> {
+    fn deref_mut(&mut self) -> &mut T {
+        unsafe { &mut *self.inner.data.get() }
+    }
+}
+
+impl<'a, T: ?Sized> !Send for MutexGuard<'a, T> {}
diff --git a/src/system/sys/mod.rs b/std/src/sys/mod.rs
index 86f49e5..86f49e5 100644
--- a/src/system/sys/mod.rs
+++ b/std/src/sys/mod.rs
diff --git a/src/system/sys/wtf8.rs b/std/src/sys/wtf8.rs
index 0bbae42..24cc205 100644
--- a/src/system/sys/wtf8.rs
+++ b/std/src/sys/wtf8.rs
@@ -27,16 +27,16 @@
 
 use core::str::next_code_point;
 
-use std::ascii::*;
-use std::borrow::Cow;
+use ascii::*;
+use borrow::Cow;
 use rustc_unicode::char;
-use std::fmt;
-use std::hash::{Hash, Hasher};
-use std::iter::FromIterator;
-use std::mem;
-use std::ops;
-use std::slice;
-use std::str;
+use fmt;
+use hash::{Hash, Hasher};
+use iter::FromIterator;
+use mem;
+use ops;
+use slice;
+use str;
 use super::AsInner;
 
 const UTF8_REPLACEMENT_CHARACTER: &'static [u8] = b"\xEF\xBF\xBD";