函数名: matherr
功 能: 用户可修改的数学错误处理程序
用 法: #include<math.h>
int matherr(struct exception *e);
程序例:
/* This is a user-defined matherr function that prevents
any error messages from being printed. */
#include<math.h>
int matherr(struct exception *a)
{
return 1;
}