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About trapping software floating-point division-by-zero errors
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| Home > Compiler Coding Practices > About trapping software floating-point division-by-zero errors | |||
Software floating-point division-by-zero errors can be trapped with the following intrinsic:
__ieee_status(FE_IEEE_MASK_ALL_EXCEPT, FE_IEEE_MASK_DIVBYZERO);
This traps any division-by-zero errors in code, and untraps all other exceptions, as illustrated in Example 16.
Example 16. Trapped division-by-zero error
#include <stdio.h>
#include <fenv.h>
int main(void)
{ float a, b, c;
// Trap the Invalid Operation exception and untrap all other exceptions:
__ieee_status(FE_IEEE_MASK_ALL_EXCEPT, FE_IEEE_MASK_DIVBYZERO);
c = 0;
a = b / c;
printf("b / c = %f, ", a); // trap division-by-zero error
return 0;
}
See also- Concepts
- Reference
ARM C and C++ Libraries and Floating-Point Support Reference:
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0375D |
| Non-Confidential | ID062912 |
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