mirror of
https://codeberg.org/ziglang/zig.git
synced 2025-12-06 13:54:21 +00:00
49d1a4c562
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging
23 lines
524 B
C
Vendored
23 lines
524 B
C
Vendored
/**
|
|
* 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>
|
|
#include <errno.h>
|
|
|
|
double ldexp(double x, int expn)
|
|
{
|
|
double res = 0.0;
|
|
if (!isfinite (x) || x == 0.0)
|
|
return x;
|
|
|
|
__asm__ __volatile__ ("fscale"
|
|
: "=t" (res)
|
|
: "0" (x), "u" ((double) expn));
|
|
|
|
if (!isfinite (res) || res == 0.0L)
|
|
errno = ERANGE;
|
|
|
|
return res;
|
|
}
|