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.\" from: @(#)floor.3 6.5 (Berkeley) 4/19/91
.\" $Id: finite.3,v 1.4 2004/12/20 21:35:45 scp Exp $
.\"
.Dd July 2, 2003
.Dt FINITE 3
.Os
.Sh NAME
.Nm finite
.Nd returns 1 for finite x, 0 for infinite x and NaNs.
.Sh SYNOPSIS
.Fd #include
.Ft int
.Fn finite "double x"
.Sh DESCRIPTION
The
.Fn finite
function returns 1 if -infinity < x < +infinity. It returns 0 if x is ±infinity or a NaN.