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4ee9c684 1`/* Implementation of the NEAREST intrinsic
f1717362 2 Copyright (C) 2003-2016 Free Software Foundation, Inc.
4ee9c684 3 Contributed by Richard Henderson <rth@redhat.com>.
4
b417ea8c 5This file is part of the GNU Fortran 95 runtime library (libgfortran).
4ee9c684 6
b417ea8c 7Libgfortran is free software; you can redistribute it and/or
8modify it under the terms of the GNU General Public
4ee9c684 9License as published by the Free Software Foundation; either
6bc9506f 10version 3 of the License, or (at your option) any later version.
b417ea8c 11
12Libgfortran is distributed in the hope that it will be useful,
4ee9c684 13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
b417ea8c 15GNU General Public License for more details.
4ee9c684 16
6bc9506f 17Under Section 7 of GPL version 3, you are granted additional
18permissions described in the GCC Runtime Library Exception, version
193.1, as published by the Free Software Foundation.
20
21You should have received a copy of the GNU General Public License and
22a copy of the GCC Runtime Library Exception along with this program;
23see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
24<http://www.gnu.org/licenses/>. */
920e54ef 25
4ee9c684 26#include "libgfortran.h"'
27
28include(`mtype.m4')dnl
29
9dc59fdf 30mathfunc_macro
31
32`#if defined (HAVE_'real_type`) && 'hasmathfunc(copysign) && hasmathfunc(nextafter)`
920e54ef 33
0a6b5f6b 34extern 'real_type` nearest_r'kind` ('real_type` s, 'real_type` dir);
35export_proto(nearest_r'kind`);
7b6cb5bd 36
0a6b5f6b 37'real_type`
38nearest_r'kind` ('real_type` s, 'real_type` dir)
4ee9c684 39{
9dc59fdf 40 dir = MATHFUNC(copysign) (MATHFUNC(__builtin_inf) (), dir);
4ee9c684 41 if (FLT_EVAL_METHOD != 0)
42 {
43 /* ??? Work around glibc bug on x86. */
9dc59fdf 44 volatile 'real_type` r = MATHFUNC(nextafter) (s, dir);
4ee9c684 45 return r;
46 }
47 else
9dc59fdf 48 return MATHFUNC(nextafter) (s, dir);
4ee9c684 49}
920e54ef 50
0a6b5f6b 51#endif'