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/* Implementation of the NEAREST intrinsic
   Copyright 2003, 2007, 2009, 2010 Free Software Foundation, Inc.
   Contributed by Richard Henderson <rth@redhat.com>.
 
This file is part of the GNU Fortran 95 runtime library (libgfortran).
 
Libgfortran 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 3 of the License, or (at your option) any later version.
 
Libgfortran 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.
 
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
 
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
<http://www.gnu.org/licenses/>.  */
 
#include "libgfortran.h"
 
 
 
#define MATHFUNC(funcname) funcname
 
#if defined (HAVE_GFC_REAL_8) && defined (HAVE_COPYSIGN) && defined (HAVE_NEXTAFTER)
 
extern GFC_REAL_8 nearest_r8 (GFC_REAL_8 s, GFC_REAL_8 dir);
export_proto(nearest_r8);
 
GFC_REAL_8
nearest_r8 (GFC_REAL_8 s, GFC_REAL_8 dir)
{
  dir = MATHFUNC(copysign) (MATHFUNC(__builtin_inf) (), dir);
  if (FLT_EVAL_METHOD != 0)
    {
      /* ??? Work around glibc bug on x86.  */
      volatile GFC_REAL_8 r = MATHFUNC(nextafter) (s, dir);
      return r;
    }
  else
    return MATHFUNC(nextafter) (s, dir);
}
 
#endif