Printable View
In my program I'm getting float point exceptions. I read and found that they are caused by illegal operations. I made a small test program but was not able to get a floating point exception. Here's what I did:
It just outputs "inf". If you need I can post some of the code that I think is causing the problem.Code:#include <iostream>
int main()
{
double zero = 0.0;
double x = 15.0 / zero;
std::cout << x << std::endl;
return 0;
}
OK, that helps. So one person said that his compiler mentioned:
- Invalid Operation
- Division by Zero
- Overflow
- Underflow
- Inexact Result
- Integer Overflow
as causes for floating point exceptions. I don't think mine is division by zero because I tested that and it would have just said "inf". Is there someway to find out what exactly is going wrong?
If you've got a reasonably modern compiler, you may have an fenv.h header file. (I think it's new in C99.) If any of these macros are defined:
FE_DIVBYZERO
FE_INEXACT
FE_INVALID
FE_OVERFLOW
FE_UNDERFLOW
then you can use the functions in that header file to see what's what.
Edit: and now I notice that we're all in C++. Well, looking for the header won't hurt (much), I suppose; otherwise, you'll have to look very carefully at your code.
I do have the header, I'm checking it out now. Thanks