| /** | |
| * 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. | |
| */ | |
| #define __FP_SIGNBIT 0x0200 | |
| int __signbitf (float x); | |
| typedef union __mingw_flt_type_t { | |
| float x; | |
| unsigned int val; | |
| } __mingw_flt_type_t; | |
| int __signbitf (float x) | |
| { | |
| #if defined(__x86_64__) || defined(_AMD64_) || defined(__arm__) || defined(_ARM_) || defined(__aarch64__) || defined(_ARM64_) | |
| __mingw_flt_type_t hlp; | |
| hlp.x = x; | |
| return ((hlp.val & 0x80000000) != 0); | |
| #elif defined(__i386__) || defined(_X86_) | |
| unsigned short sw; | |
| __asm__ __volatile__ ("fxam; fstsw %%ax;" | |
| : "=a" (sw) | |
| : "t" (x) ); | |
| return (sw & __FP_SIGNBIT) != 0; | |
| #endif | |
| } | |
| int __attribute__ ((alias ("__signbitf"))) signbitf (float); |