MirBSD manpage: finite(3), finitef(3)

FINITE(3)                  BSD Programmer's Manual                   FINITE(3)

NAME

     finite, finitef - tests for finite values

LIBRARY

     libm

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.

MirBSD #10-current              July 28, 2011                                1