matherr.c

C语言数学错误处理

最新推荐文章于 2024-03-24 15:26:18 发布

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#math.h #exception #domain #include #struct

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本文通过一个简单的C语言程序示例介绍了如何处理数学运算中出现的错误，特别是针对负数开方这种会引发数学错误的情况。文章展示了如何利用matherr函数来捕获并处理不同类型的数学异常。

name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <stdio.h>
#include <math.h>

void main(void)
{
printf("Sqrt of -1 is %f/n", sqrt(-1.0));
}

int matherr(struct exception *error)
{
   switch (error->type) {
     case DOMAIN: printf("Domain error/n");
                  break;
     case PLOSS: printf("Partial precision loss error/n");
                  break;
     case OVERFLOW: printf("Overflow error/n");
                    break;
     case SING:   printf("Error in singularity/n");
                  break;
     case TLOSS: printf("Total precision loss error/n");
                  break;
     case UNDERFLOW: printf("Underflow error/n");
                     break;
   };
   printf("Error occurred in %s values %f/n",
     error->name, error->arg1);
   error->retval = 1;
   return(1);
}