39 lines
1.3 KiB
C
39 lines
1.3 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 (libgfor).
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Libgfor is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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Ligbfor 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 Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with libgfor; see the file COPYING.LIB. 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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GFC_REAL_8
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prefix(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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