C语言 浮点异常（核心转储）
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Floating point exception (core dumped)
提问by
I have a long program, which consists of one header file, and two source files, in the first one I have written the implementations of the functions, and in the second one (which is my main), I call and execute them. Though, at one point I get an error message saying
我有一个很长的程序，它由一个头文件和两个源文件组成，在第一个中我编写了函数的实现，在第二个中（这是我的主要），我调用并执行它们。虽然，有一次我收到一条错误消息说
Floating point exception (core dumped)
浮点异常（核心转储）
and the program stops.
然后程序停止。
As I said there are lots of lines of code, therefore, I'm not able to post my whole source code here, though I will post the most relevant parts, and where error occurs.
正如我所说，有很多代码行，因此，我无法在这里发布我的整个源代码，尽管我会发布最相关的部分以及发生错误的地方。
My error occurs when I try to call this function (below you can find its implementation):
当我尝试调用此函数时出现错误（您可以在下面找到它的实现）：
void chest_first(Complex* FFTInput, Complex* IFFTOutput, Complex* HFirst)
{
int i;
for(i = 0; i < 64; i++)
{
HFirst[i].real = FFTInput[i].real / IFFTOutput[i].real;
HFirst[i].imag = FFTInput[i].imag / IFFTOutput[i].imag;
}
}
In this case Complex, is a type definition that I have defined.
在这种情况下，Complex 是我定义的类型定义。
typedef struct {
int real, imag;
} Complex;
Here is the part from the main, where this function is called.
这是 main 中调用此函数的部分。
Complex HFirst[64];
if((strcmp(channel, "LS") == 0) || (strcmp(channel, "ls") == 0))
{
if(i == 1)
chest_first(fft_input, ifft_bpsk_output, HFirst);
.
.
.
}
I have earlier called some other function, which put values to fft_input and ifft_bpsk_output, which are both Complex arrays with 64 elements.
我之前调用了一些其他函数，这些函数将值放入 fft_input 和 ifft_bpsk_output，它们都是具有 64 个元素的复杂数组。
采纳答案by Salgar
You're probably dividing by zero or some other nonsensical number. Are you sure realand imagfor IFFTOutput[i]isn't zero? Print it out just before perhaps?
您可能正在除以零或其他一些无意义的数字。你确定realand imagforIFFTOutput[i]不是零吗？也许就在之前打印出来？
回答by Qutus
I think it could be a problem of division by 0, check your value about that.
我认为这可能是除以 0 的问题，请检查您的价值。
回答by Vipin Chaudhary
I was also having the same problem.It occurs due to using value greater than which your datatype can handle for ex. using an array of size 10^7 while you defined it as int A[10^7] this will dumped becouz an int array cannot handle this much size.. So you have to use appropriate datatypes.. thank you :)
我也遇到了同样的问题。这是由于使用的值大于您的数据类型可以处理的值。使用大小为 10^7 的数组，而您将其定义为 int A[10^7] 这将被转储，因为 int 数组无法处理这么大的大小..所以您必须使用适当的数据类型..谢谢:)
