Prevent math errors by carefully bounds-checking before calling functions. In particular, the following domain errors should be prevented by prior bounds-checking:
Function Bounds-checking
acos
, asin -1 <= x && x <= 1
atan2 x != 0 || y != 0
log, log10 x >= 0
pow(x, y) x != 0 || y >= 0
sqrt x >= 0
The calling function should take alternative action if these bounds are violated.
Non-Compliant Example
Compliant Solution
References
- ISO/IEC 9899-1999 7.12 Mathematics <math.h>
- Plum 91 Topic: 2.10 conv - conversions and overflow