ISINF
Section: Linux Programmer's Manual (3)
Updated: June 2, 1993
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NAME
isinf, isnan, finite - test for infinity or not-a-number (NaN)
SYNOPSIS
#include <math.h>
int isinf(double value);
int isnan(double value);
int finite(double value);
DESCRIPTION
The isinf() function returns -1 if value represents negative
infinity, 1 if value represents positive infinity, and 0 otherwise.
The isnan() function returns a non-zero value if value is
"not-a-number" (NaN), and 0 otherwise.
The finite() function returns a non-zero value if value is
finite or is not a "not-a-number" (NaN) value, and 0 otherwise.
CONFORMING TO
BSD 4.3
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- CONFORMING TO
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