finite(3) - NetBSD Manual Pages

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FINITE(3)               NetBSD 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 standards
     or in the IEEE POSIX standards.


HISTORY

     The finite and finitef() functions first appeared in 4.3BSD.

NetBSD 6.1.2                     July 28, 2011                    NetBSD 6.1.2