1/**
2 * This file has no copyright assigned and is placed in the Public Domain.
3 * This file is part of the mingw-w64 runtime package.
4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
5 */
6#define __FP_SIGNBIT 0x0200
7int __signbitf (float x);
8
9typedef union __mingw_flt_type_t {
10 float x;
11 unsigned int val;
12} __mingw_flt_type_t;
13
14int __signbitf (float x)
15{
16#if defined(__x86_64__) || defined(_AMD64_) || defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_)
17 __mingw_flt_type_t hlp;
18 hlp.x = x;
19 return ((hlp.val & 0x80000000) != 0);
20#elif defined(__i386__) || defined(_X86_)
21 unsigned short sw;
22 __asm__ __volatile__ ("fxam; fstsw %%ax;"
23 : "=a" (sw)
24 : "t" (x) );
25 return (sw & __FP_SIGNBIT) != 0;
26#endif
27}
28int __attribute__ ((alias ("__signbitf"))) signbitf (float);