statfp.c File Reference

#include <precomp.h>
#include "float.h"

Include dependency graph for statfp.c:

Go to the source code of this file.

Macros
#define	_SW_INVALID   0x00000010 /* invalid */
#define	_SW_ZERODIVIDE   0x00000008 /* zero divide */
#define	_SW_UNDERFLOW   0x00000002 /* underflow */
#define	_SW_OVERFLOW   0x00000004 /* overflow */
#define	_SW_INEXACT   0x00000001 /* inexact (precision) */
#define	_SW_DENORMAL   0x00080000 /* denormal status bit */

Functions
unsigned int CDECL	_statusfp (void)

Macro Definition Documentation

_SW_DENORMAL

#define _SW_DENORMAL   0x00080000 /* denormal status bit */

Definition at line 20 of file statfp.c.

_SW_INEXACT

#define _SW_INEXACT   0x00000001 /* inexact (precision) */

Definition at line 19 of file statfp.c.

_SW_INVALID

#define _SW_INVALID   0x00000010 /* invalid */

Definition at line 15 of file statfp.c.

_SW_OVERFLOW

#define _SW_OVERFLOW   0x00000004 /* overflow */

Definition at line 18 of file statfp.c.

_SW_UNDERFLOW

#define _SW_UNDERFLOW   0x00000002 /* underflow */

Definition at line 17 of file statfp.c.

_SW_ZERODIVIDE

#define _SW_ZERODIVIDE   0x00000008 /* zero divide */

Definition at line 16 of file statfp.c.

Function Documentation

_statusfp()

unsigned int CDECL _statusfp

(

void

)

Definition at line 25 of file statfp.c.

{
  unsigned int retVal = 0;
  unsigned short fpword;
 
#ifdef _M_AMD64
    fpword = _mm_getcsr();
#elif defined(__GNUC__)
  __asm__ __volatile__( "fstsw %0" : "=m" (fpword) : );
#else // _MSC_VER
  __asm fstsw [fpword];
#endif
  if (fpword & 0x1)  retVal |= _SW_INVALID;
  if (fpword & 0x2)  retVal |= _SW_DENORMAL;
  if (fpword & 0x4)  retVal |= _SW_ZERODIVIDE;
  if (fpword & 0x8)  retVal |= _SW_OVERFLOW;
  if (fpword & 0x10) retVal |= _SW_UNDERFLOW;
  if (fpword & 0x20) retVal |= _SW_INEXACT;
  return retVal;
}

Referenced by _clearfp(), START_TEST(), and Test_exceptions().