]> git.ipfire.org Git - thirdparty/gcc.git/blame - libgfortran/m4/rrspacing.m4
Update copyright years.
[thirdparty/gcc.git] / libgfortran / m4 / rrspacing.m4
CommitLineData
71d90ac4 1`/* Implementation of the RRSPACING intrinsic
f1717362 2 Copyright (C) 2006-2016 Free Software Foundation, Inc.
71d90ac4 3 Contributed by Steven G. Kargl <kargl@gcc.gnu.org>
4
5This file is part of the GNU Fortran 95 runtime library (libgfortran).
6
7Libgfortran is free software; you can redistribute it and/or
8modify it under the terms of the GNU General Public
9License as published by the Free Software Foundation; either
6bc9506f 10version 3 of the License, or (at your option) any later version.
71d90ac4 11
12Libgfortran is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
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/>. */
71d90ac4 25
71d90ac4 26#include "libgfortran.h"'
27
28include(`mtype.m4')dnl
29
9dc59fdf 30mathfunc_macro
31
32`#if defined (HAVE_'real_type`) && 'hasmathfunc(fabs) && hasmathfunc(frexp)`
71d90ac4 33
0a6b5f6b 34extern 'real_type` rrspacing_r'kind` ('real_type` s, int p);
35export_proto(rrspacing_r'kind`);
71d90ac4 36
0a6b5f6b 37'real_type`
38rrspacing_r'kind` ('real_type` s, int p)
71d90ac4 39{
40 int e;
0a6b5f6b 41 'real_type` x;
9dc59fdf 42 x = MATHFUNC(fabs) (s);
71d90ac4 43 if (x == 0.)
44 return 0.;
9dc59fdf 45 MATHFUNC(frexp) (s, &e);
46#if 'hasmathfunc(ldexp)`
47 return MATHFUNC(ldexp) (x, p - e);
bd73b228 48#else
9dc59fdf 49 return MATHFUNC(scalbn) (x, p - e);
bd73b228 50#endif
51
71d90ac4 52}
53
0a6b5f6b 54#endif'