| /** |
| * 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> |
| int |
| __isnanf (float _x) |
| { |
| #if defined(__x86_64__) || defined(_AMD64_) || defined(__arm__) || defined(_ARM_) |
| __mingw_flt_type_t hlp; |
| int i; |
| |
| hlp.x = _x; |
| i = hlp.val & 0x7fffffff; |
| i = 0x7f800000 - i; |
| return (int) (((unsigned int) i) >> 31); |
| #elif defined(__i386__) || defined(_X86_) |
| unsigned short _sw; |
| __asm__ __volatile__ ("fxam;" |
| "fstsw %%ax": "=a" (_sw) : "t" (_x) ); |
| return (_sw & (FP_NAN | FP_NORMAL | FP_INFINITE | FP_ZERO | FP_SUBNORMAL)) |
| == FP_NAN; |
| #endif |
| } |
| |
| int __attribute__ ((alias ("__isnanf"))) isnanf (float); |
