_fpreset()

initialize for floating-point operations

Synopsis:

#include <float.h>
void _fpreset( void );

Description:

After a floating-point exception, it may be necessary to call the _fpreset() function before any further floating-point operations are attempted.

Examples:

#include <stdio.h>
#include <float.h>

char *status[2] = { "No", "  " };

void main()
  {
    unsigned int fp_status;

    fp_status = _status87();

    printf( "80x87 status\n" );
    printf( "%s invalid operation\n",
        status[ (fp_status & SW_INVALID) == 0 ] );
    printf( "%s denormalized operand\n",
        status[ (fp_status & SW_DENORMAL) == 0 ] );
    printf( "%s divide by zero\n",
        status[ (fp_status & SW_ZERODIVIDE) == 0 ] );
    printf( "%s overflow\n",
        status[ (fp_status & SW_OVERFLOW) == 0 ] );
    printf( "%s underflow\n",
        status[ (fp_status & SW_UNDERFLOW) == 0 ] );
    printf( "%s inexact result\n",
        status[ (fp_status & SW_INEXACT) == 0 ] );
    _fpreset();
  }

Classification:

Intel

See also:

_clear87(), _status87()