Table of Contentsinfnan - deal with infinite or not-a-number (NaN) result #include <math.h>
double infnan(int error); The infnan() function returns a suitable value for infinity and "not-a-number" (NaN) results. The value of error can be ERANGE to represent infinity or anything else to represent NaN. errno is also set. If error is ERANGE (Infinity), HUGE_VAL is returned. If error is -ERANGE (-Infinity), -HUGE_VAL is returned.
If error is anything else, NAN is returned.
- ERANGE
- The value of error is positive or negative infinity.
- EDOM
- The value of error is "not-a-number" (NaN).
BSD 4.3
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