mirror of git://gcc.gnu.org/git/gcc.git
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* Implementation of the NEAREST intrinsic
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Copyright 2003 Free Software Foundation, Inc.
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Contributed by Richard Henderson <rth@redhat.com>.
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This file is part of the GNU Fortran 95 runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with libgfortran; see the file COPYING. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <math.h>
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#include <float.h>
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#include "libgfortran.h"
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extern GFC_REAL_8 nearest_r8 (GFC_REAL_8 s, GFC_REAL_8 dir);
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export_proto(nearest_r8);
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GFC_REAL_8
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nearest_r8 (GFC_REAL_8 s, GFC_REAL_8 dir)
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{
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dir = copysign (__builtin_inf (), dir);
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if (FLT_EVAL_METHOD != 0)
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{
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/* ??? Work around glibc bug on x86. */
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volatile GFC_REAL_8 r = nextafter (s, dir);
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return r;
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}
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else
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return nextafter (s, dir);
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}
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