libgfortran/generated/nearest_r10.c

   1 /* Implementation of the NEAREST intrinsic
   2    Copyright (C) 2003-2016 Free Software Foundation, Inc.
   3    Contributed by Richard Henderson <rth@redhat.com>.
   4
   5 This file is part of the GNU Fortran 95 runtime library (libgfortran).
   6
   7 Libgfortran is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU General Public
   9 License as published by the Free Software Foundation; either
  10 version 3 of the License, or (at your option) any later version.
  11
  12 Libgfortran is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 Under Section 7 of GPL version 3, you are granted additional
  18 permissions described in the GCC Runtime Library Exception, version
  19 3.1, as published by the Free Software Foundation.
  20
  21 You should have received a copy of the GNU General Public License and
  22 a copy of the GCC Runtime Library Exception along with this program;
  23 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 <http://www.gnu.org/licenses/>.  */
  25
  26 #include "libgfortran.h"
  27
  28
  29
  30 #define MATHFUNC(funcname) funcname ## l
  31
  32 #if defined (HAVE_GFC_REAL_10) && defined (HAVE_COPYSIGNL) && defined (HAVE_NEXTAFTERL)
  33
  34 extern GFC_REAL_10 nearest_r10 (GFC_REAL_10 s, GFC_REAL_10 dir);
  35 export_proto(nearest_r10);
  36
  37 GFC_REAL_10
  38 nearest_r10 (GFC_REAL_10 s, GFC_REAL_10 dir)
  39 {
  40   dir = MATHFUNC(copysign) (MATHFUNC(__builtin_inf) (), dir);
  41   if (FLT_EVAL_METHOD != 0)
  42     {
  43       /* ??? Work around glibc bug on x86.  */
  44       volatile GFC_REAL_10 r = MATHFUNC(nextafter) (s, dir);
  45       return r;
  46     }
  47   else
  48     return MATHFUNC(nextafter) (s, dir);
  49 }
  50
  51 #endif