FINITE(3) BSD Library Functions Manual FINITE(3)
NAME
finite, finitef -- tests for finite values
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
int
finite(double x);
int
finitef(float x);
DESCRIPTION
The finite() function returns the value 1 when
-infinity < x < +infinity.
Otherwise a zero is returned (that is, |x| = infinity or x is NaN).
SEE ALSO
isfinite(3), math(3)
STANDARDS
The described functions conform to IEEE Std 754-1985. Note that unlike isfinite(3), neither function is present in the ISO C-language stan-
dards or in the IEEE POSIX standards.
HISTORY
The finite and finitef() functions first appeared in 4.3BSD.
BSD
July 28, 2011 BSD
