add libcore from 2016-04-11 nightly

1 files changed, 309 insertions, 0 deletions

diff --git a/libcore/num/wrapping.rs b/libcore/num/wrapping.rs
new file mode 100644
index 0000000..e28a36a
--- /dev/null
+++ b/libcore/num/wrapping.rs
@@ -0,0 +1,309 @@
+// 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.
+
+use super::Wrapping;
+
+use ops::*;
+
+macro_rules! sh_impl_signed {
+    ($t:ident, $f:ident) => (
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Shl<$f> for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn shl(self, other: $f) -> Wrapping<$t> {
+                if other < 0 {
+                    Wrapping(self.0.wrapping_shr((-other & self::shift_max::$t as $f) as u32))
+                } else {
+                    Wrapping(self.0.wrapping_shl((other & self::shift_max::$t as $f) as u32))
+                }
+            }
+        }
+
+        #[stable(feature = "wrapping_impls", since = "1.7.0")]
+        impl ShlAssign<$f> for Wrapping<$t> {
+            #[inline(always)]
+            fn shl_assign(&mut self, other: $f) {
+                *self = *self << other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Shr<$f> for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn shr(self, other: $f) -> Wrapping<$t> {
+                if other < 0 {
+                    Wrapping(self.0.wrapping_shl((-other & self::shift_max::$t as $f) as u32))
+                } else {
+                    Wrapping(self.0.wrapping_shr((other & self::shift_max::$t as $f) as u32))
+                }
+            }
+        }
+
+        #[stable(feature = "wrapping_impls", since = "1.7.0")]
+        impl ShrAssign<$f> for Wrapping<$t> {
+            #[inline(always)]
+            fn shr_assign(&mut self, other: $f) {
+                *self = *self >> other;
+            }
+        }
+    )
+}
+
+macro_rules! sh_impl_unsigned {
+    ($t:ident, $f:ident) => (
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Shl<$f> for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn shl(self, other: $f) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_shl((other & self::shift_max::$t as $f) as u32))
+            }
+        }
+
+        #[stable(feature = "wrapping_impls", since = "1.7.0")]
+        impl ShlAssign<$f> for Wrapping<$t> {
+            #[inline(always)]
+            fn shl_assign(&mut self, other: $f) {
+                *self = *self << other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Shr<$f> for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn shr(self, other: $f) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_shr((other & self::shift_max::$t as $f) as u32))
+            }
+        }
+
+        #[stable(feature = "wrapping_impls", since = "1.7.0")]
+        impl ShrAssign<$f> for Wrapping<$t> {
+            #[inline(always)]
+            fn shr_assign(&mut self, other: $f) {
+                *self = *self >> other;
+            }
+        }
+    )
+}
+
+// FIXME (#23545): uncomment the remaining impls
+macro_rules! sh_impl_all {
+    ($($t:ident)*) => ($(
+        //sh_impl_unsigned! { $t, u8 }
+        //sh_impl_unsigned! { $t, u16 }
+        //sh_impl_unsigned! { $t, u32 }
+        //sh_impl_unsigned! { $t, u64 }
+        sh_impl_unsigned! { $t, usize }
+
+        //sh_impl_signed! { $t, i8 }
+        //sh_impl_signed! { $t, i16 }
+        //sh_impl_signed! { $t, i32 }
+        //sh_impl_signed! { $t, i64 }
+        //sh_impl_signed! { $t, isize }
+    )*)
+}
+
+sh_impl_all! { u8 u16 u32 u64 usize i8 i16 i32 i64 isize }
+
+// FIXME(30524): impl Op<T> for Wrapping<T>, impl OpAssign<T> for Wrapping<T>
+macro_rules! wrapping_impl {
+    ($($t:ty)*) => ($(
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Add for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn add(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_add(other.0))
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl AddAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn add_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self + other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Sub for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn sub(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_sub(other.0))
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl SubAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn sub_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self - other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Mul for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn mul(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_mul(other.0))
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl MulAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn mul_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self * other;
+            }
+        }
+
+        #[stable(feature = "wrapping_div", since = "1.3.0")]
+        impl Div for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn div(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_div(other.0))
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl DivAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn div_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self / other;
+            }
+        }
+
+        #[stable(feature = "wrapping_impls", since = "1.7.0")]
+        impl Rem for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn rem(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0.wrapping_rem(other.0))
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl RemAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn rem_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self % other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl Not for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn not(self) -> Wrapping<$t> {
+                Wrapping(!self.0)
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl BitXor for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn bitxor(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0 ^ other.0)
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl BitXorAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn bitxor_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self ^ other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl BitOr for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn bitor(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0 | other.0)
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl BitOrAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn bitor_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self | other;
+            }
+        }
+
+        #[stable(feature = "rust1", since = "1.0.0")]
+        impl BitAnd for Wrapping<$t> {
+            type Output = Wrapping<$t>;
+
+            #[inline(always)]
+            fn bitand(self, other: Wrapping<$t>) -> Wrapping<$t> {
+                Wrapping(self.0 & other.0)
+            }
+        }
+
+        #[stable(feature = "op_assign_traits", since = "1.8.0")]
+        impl BitAndAssign for Wrapping<$t> {
+            #[inline(always)]
+            fn bitand_assign(&mut self, other: Wrapping<$t>) {
+                *self = *self & other;
+            }
+        }
+    )*)
+}
+
+wrapping_impl! { usize u8 u16 u32 u64 isize i8 i16 i32 i64 }
+
+mod shift_max {
+    #![allow(non_upper_case_globals)]
+
+    #[cfg(target_pointer_width = "32")]
+    mod platform {
+        pub const usize: u32 = super::u32;
+        pub const isize: u32 = super::i32;
+    }
+
+    #[cfg(target_pointer_width = "64")]
+    mod platform {
+        pub const usize: u32 = super::u64;
+        pub const isize: u32 = super::i64;
+    }
+
+    pub const  i8: u32 = (1 << 3) - 1;
+    pub const i16: u32 = (1 << 4) - 1;
+    pub const i32: u32 = (1 << 5) - 1;
+    pub const i64: u32 = (1 << 6) - 1;
+    pub use self::platform::isize;
+
+    pub const  u8: u32 = i8;
+    pub const u16: u32 = i16;
+    pub const u32: u32 = i32;
+    pub const u64: u32 = i64;
+    pub use self::platform::usize;
+}