_clear87.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 25 行

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

void main()
  {
    unsigned int fp_status;

    fp_status = _clear87();

    printf( "80x87 status =" );
    if( fp_status & SW_INVALID )
        printf( " invalid" );
    if( fp_status & SW_DENORMAL )
        printf( " denormal" );
    if( fp_status & SW_ZERODIVIDE )
        printf( " zero_divide" );
    if( fp_status & SW_OVERFLOW )
        printf( " overflow" );
    if( fp_status & SW_UNDERFLOW )
        printf( " underflow" );
    if( fp_status & SW_INEXACT )
        printf( " inexact_result" );
    printf( "\n" );
  }