Add project files.v0.1-test

1 files changed, 22 insertions, 0 deletions

diff --git a/common/x64-util.hpp b/common/x64-util.hpp
new file mode 100644
index 0000000..2fb61bb
--- /dev/null
+++ b/common/x64-util.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <emmintrin.h>
+
+inline double sqrtsd(double val) {
+    __m128d src = _mm_load_sd(&val);
+    __m128d dst = _mm_sqrt_sd(src, src);
+    _mm_store_sd(&val, dst);
+    return val;
+}
+
+inline constexpr double minsd(double a, double b) {
+    return (a < b) ? a : b;
+}
+
+inline constexpr double maxsd(double a, double b) {
+    return (b < a) ? a : b;
+}
+
+inline constexpr double clampsd(double v, double lo, double hi) {
+    return minsd(maxsd(v, lo), hi);
+}