zig/lib/libc/mingw/math/rintf.c

24 lines
810 B
C

/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the mingw-w64 runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
#include <math.h>
float rintf (float x) {
float retval = 0.0F;
#if defined(_AMD64_) || defined(__x86_64__) || defined(_X86_) || defined(__i386__)
__asm__ __volatile__ ("frndint;": "=t" (retval) : "0" (x));
#elif defined(__arm__) || defined(_ARM_)
if (isnan(x) || isinf(x))
return x;
__asm__ __volatile__ (
"vcvtr.s32.f32 %[dst], %[src]\n\t"
"vcvt.f32.s32 %[dst], %[dst]\n\t"
: [dst] "=t" (retval) : [src] "w" (x));
#elif defined(__aarch64__) || defined(_ARM64_)
__asm__ __volatile__ ("frintx %s0, %s1\n\t" : "=w" (retval) : "w" (x));
#endif
return retval;
}