annotate lib/logbl.c @ 40057:b06060465f09

maint: Run 'make update-copyright'
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 01 Jan 2019 00:25:11 +0100
parents 10eb9086bea0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
16755
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
1 /* Floating-point exponent.
40057
b06060465f09 maint: Run 'make update-copyright'
Paul Eggert <eggert@cs.ucla.edu>
parents: 19484
diff changeset
2 Copyright (C) 2012-2019 Free Software Foundation, Inc.
16755
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
3
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
4 This program is free software: you can redistribute it and/or modify
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
5 it under the terms of the GNU General Public License as published by
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
6 the Free Software Foundation; either version 3 of the License, or
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
7 (at your option) any later version.
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
8
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
9 This program is distributed in the hope that it will be useful,
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
12 GNU General Public License for more details.
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
13
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
14 You should have received a copy of the GNU General Public License
19190
9759915b2aca all: prefer https: URLs
Paul Eggert <eggert@cs.ucla.edu>
parents: 18626
diff changeset
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16755
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
16
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
17 #include <config.h>
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
18
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
19 /* Specification. */
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
20 #include <math.h>
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
21
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
22 #if HAVE_SAME_LONG_DOUBLE_AS_DOUBLE
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
23
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
24 long double
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
25 logbl (long double x)
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
26 {
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
27 return logb (x);
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
28 }
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
29
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
30 #else
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
31
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
32 # define USE_LONG_DOUBLE
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
33 # include "logb.c"
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
34
5320f2305736 New module 'logbl'.
Bruno Haible <bruno@clisp.org>
parents:
diff changeset
35 #endif