clearfp.c File Reference

#include <precomp.h>

Include dependency graph for clearfp.c:

Go to the source code of this file.

Functions
unsigned int	_statusfp (void)
unsigned int CDECL	_clearfp (void)

Function Documentation

_clearfp()

unsigned int CDECL _clearfp

(

void

)

Definition at line 18 of file clearfp.c.

{
  unsigned int retVal = _statusfp();
#if defined(__GNUC__)
  __asm__ __volatile__( "fnclex" );
#else
  __asm fnclex;
#endif
  return retVal;
}

Referenced by main(), and Test_exceptions().

_statusfp()

unsigned int _statusfp

(

void

)

Definition at line 11 of file _statusfp.c.

{
    unsigned int mxcsr, status = 0;

    /* Get MXCSR */
    mxcsr = _mm_getcsr();

    /* Convert to abstract status flags */
    if (mxcsr & _MM_EXCEPT_INVALID)
        status |= _SW_INVALID;
    if (mxcsr & _MM_EXCEPT_DENORM)
        status |= _SW_DENORMAL;
    if (mxcsr & _MM_EXCEPT_DIV_ZERO)
        status |= _SW_ZERODIVIDE;
    if (mxcsr & _MM_EXCEPT_OVERFLOW)
        status |= _SW_OVERFLOW;
    if (mxcsr & _MM_EXCEPT_UNDERFLOW)
        status |= _SW_UNDERFLOW;
    if (mxcsr & _MM_EXCEPT_INEXACT)
        status |= _SW_INEXACT;

    return status;
}

Referenced by _clearfp().