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cc6d3bde | 1 | /* Implementation of the RRSPACING intrinsic |
36ae8a61 | 2 | Copyright 2006, 2007 Free Software Foundation, Inc. |
cc6d3bde SK |
3 | Contributed by Steven G. Kargl <kargl@gcc.gnu.org> |
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 2 of the License, or (at your option) any later version. | |
11 | ||
12 | In addition to the permissions in the GNU General Public License, the | |
13 | Free Software Foundation gives you unlimited permission to link the | |
14 | compiled version of this file into combinations with other programs, | |
15 | and to distribute those combinations without any restriction coming | |
16 | from the use of this file. (The General Public License restrictions | |
17 | do apply in other respects; for example, they cover modification of | |
18 | the file, and distribution when not linked into a combine | |
19 | executable.) | |
20 | ||
21 | Libgfortran is distributed in the hope that it will be useful, | |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
25 | ||
26 | You should have received a copy of the GNU General Public | |
27 | License along with libgfortran; see the file COPYING. If not, | |
28 | write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
29 | Boston, MA 02110-1301, USA. */ | |
30 | ||
cc6d3bde SK |
31 | #include "libgfortran.h" |
32 | ||
33 | ||
4010308c | 34 | #if defined (HAVE_GFC_REAL_10) && defined (HAVE_FABSL) && defined (HAVE_FREXPL) |
cc6d3bde SK |
35 | |
36 | extern GFC_REAL_10 rrspacing_r10 (GFC_REAL_10 s, int p); | |
37 | export_proto(rrspacing_r10); | |
38 | ||
39 | GFC_REAL_10 | |
40 | rrspacing_r10 (GFC_REAL_10 s, int p) | |
41 | { | |
42 | int e; | |
43 | GFC_REAL_10 x; | |
44 | x = fabsl (s); | |
45 | if (x == 0.) | |
46 | return 0.; | |
47 | frexpl (s, &e); | |
4010308c | 48 | #if defined (HAVE_LDEXPL) |
cc6d3bde | 49 | return ldexpl (x, p - e); |
4010308c SK |
50 | #else |
51 | return scalbnl (x, p - e); | |
52 | #endif | |
53 | ||
cc6d3bde SK |
54 | } |
55 | ||
56 | #endif |