blob: 00600919ef8ef1b943babc4d94dded57929a196f [file] [log] [blame]
/**
* This file has no copyright assigned and is placed in the Public Domain.
* This file is part of the w64 mingw-runtime package.
* No warranty is given; refer to the file DISCLAIMER.PD within this package.
*/
#include <math.h>
int
__isnanf (float _x)
{
#ifdef __x86_64__
__mingw_flt_type_t hlp;
int i;
hlp.x = _x;
i = hlp.val & 0x7fffffff;
i = 0x7f800000 - i;
return (int) (((unsigned int) i) >> 31);
#else
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);