| /** | |
| * 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 __CRT__NO_INLINE | |
| #include <math.h> | |
| int __fpclassifyf (float _x) | |
| { | |
| #ifdef __x86_64__ | |
| __mingw_flt_type_t hlp; | |
| hlp.x = _x; | |
| hlp.val &= 0x7fffffff; | |
| if (hlp.val == 0) | |
| return FP_ZERO; | |
| if (hlp.val < 0x800000) | |
| return FP_SUBNORMAL; | |
| if (hlp.val >= 0x7f800000) | |
| return (hlp.val > 0x7f800000 ? FP_NAN : FP_INFINITE); | |
| return FP_NORMAL; | |
| #else | |
| unsigned short sw; | |
| __asm__ __volatile__ ( | |
| "fxam; fstsw %%ax;" | |
| : "=a" (sw) | |
| : "t" (_x) | |
| ); | |
| return sw & (FP_NAN | FP_NORMAL | FP_ZERO); | |
| #endif | |
| } |