函数名:_status87
功 能: 取浮点状态
用 法:unsigned int _status87(void);
程序例:
#include <stdio.h>
#include <float.h>
int main(void)
{
float x;
double y = 1.5e-100;
printf("Status 87 before error: %x
", _status87());
x = y; /* <-- force an error to occur */
y = x;
printf("Status 87 after error : %x
", _status87());
return 0;
}