fpreset.c File Reference

#include <precomp.h>

Include dependency graph for fpreset.c:

Go to the source code of this file.

Functions
void CDECL	_fpreset (void)

Function Documentation

_fpreset()

void CDECL _fpreset

(

void

)

Definition at line 13 of file fpreset.c.

{
    const unsigned short x86_cw = 0x27f;
#ifdef _MSC_VER
    __asm { fninit }
    __asm { fldcw [x86_cw] }
#else
    __asm__ __volatile__( "fninit; fldcw %0" : : "m" (x86_cw) );
#endif
    if (IsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE))
    {
          const unsigned long sse2_cw = 0x1f80;
#ifdef _MSC_VER
        __asm { ldmxcsr [sse2_cw] }
#else
        __asm__ __volatile__( "ldmxcsr %0" : : "m" (sse2_cw) );
#endif
    }
}

Referenced by _gnu_exception_handler(), START_TEST(), Test_controlfp(), and Test_exceptions().