view lib/roundl.c @ 17288:e1bf1347de53

doc: clarify -Werror * doc/warnings.texi (warnings): -Werror is not always a bad idea; clarify that it's intended for developers, not for ordinary builds, and mention --enable-gcc-warnings as one possible use.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 15 Jan 2013 12:21:42 -0800
parents e542fd46ad6f
children 344018b6e5d7
line wrap: on
line source

/* Round toward nearest, breaking ties away from zero.
   Copyright (C) 2007, 2009-2013 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, see <http://www.gnu.org/licenses/>.  */

#include <config.h>

#if HAVE_SAME_LONG_DOUBLE_AS_DOUBLE

/* Specification.  */
# include <math.h>

long double
roundl (long double x)
{
  return round (x);
}

#else

# define USE_LONG_DOUBLE
# include "round.c"

#endif