view lib/isfinite.c @ 11395:5442b2430859

avoid gcc warnings about unused macro definitions * lib/readtokens.c (STREQ): Remove unused definition. * lib/xmalloc.c (SIZE_MAX): Likewise. * lib/openat-die.c (N_): Likewise. * lib/mountlist.c (SIZE_MAX): Remove definition. Instead, include <stdint.h>. * lib/readutmp.c: Likewise. * modules/readutmp (Depends-on): Add stdint. * modules/mountlist (Depends-on): Add stdint. * lib/userspec.c (ISDIGIT): Move definition into #if block where used.
author Jim Meyering <meyering@redhat.com>
date Thu, 12 Mar 2009 13:09:42 +0100
parents ebb7ea0c94e8
children b5e42ef33b49
line wrap: on
line source

/* Test for finite value (zero, subnormal, or normal, and not infinite or NaN).
   Copyright (C) 2007-2008 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

/* Written by Ben Pfaff <blp@gnu.org>, 2007. */

#include <config.h>

#include "isnanf-nolibm.h"
#include "isnand-nolibm.h"
#include "isnanl-nolibm.h"

int gl_isfinitef (float x)
{
  return !isnanf (x) && x - x == 0.f;
}

int gl_isfinited (double x)
{
  return !isnand (x) && x - x == 0.;
}

int gl_isfinitel (long double x)
{
  return !isnanl (x) && x - x == 0.L;
}