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An attempt to call a floating point function on a value that is outside its domain and will result in FE_INVALID being raised.
| Class Name | Raises FE_INVALID | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significance | style | ||||||||||||||||||||||||
| Mnemonic | MATH.DOMAIN.FE_INVALID | ||||||||||||||||||||||||
| Categories |
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| Availability | Available for C and C++. |
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| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Raises FE_INVALID" |
CodeSonar ships with library models that allow it to recognize functions such as libm remainder() that may raise FE_INVALID. If one of these functions is called with a finite value in the numerator parameter position and zero in the denominator parameter position, a warning will be issued.
If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering Raises FE_INVALID warnings.
Japanese (ja)
#include <math.h>
double use_fmod(double ind){
double a = fmod(1,1); /* ok */
double b = fmod(1,0); /* 'Raises FE_INVALID' warning issued here */
double c = fmod(ind,0); /* 'Raises FE_INVALID' warning issued here */
double d = fmod(ind,ind); /* EVIDENCED ONLY: 'Raises FE_INVALID' warning issued here
* if CodeSonar has evidence that use_fmod() is called on a value equal to 0. */
return a+b+c+d;
}
The following configuration file parameters affect checks for this warning class.