Search For :

in:

All Sections 1. General Commands 2. System Calls 3. Subroutines 4. Special Files 5. File Formats 6. Games and Demos 7. Macros and Conventions 8. Maintenence Commands

 

NAME

infnan - deal with infinite or not-a-number (NaN) result  

SYNOPSIS

#include <math.h>

double infnan(int error);

 

DESCRIPTION

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.  

RETURN VALUE

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.  

ERRORS

ERANGE

The value of error is positive or negative infinity.

EDOM

The value of error is "not-a-number" (NaN).

 

CONFORMING TO

BSD 4.3

---

 

Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ERRORS

CONFORMING TO