xapian-core  1.4.21
exp10.h
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1 
4 /* Copyright (C) 2017 Olly Betts
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef XAPIAN_INCLUDED_EXP10_H
22 #define XAPIAN_INCLUDED_EXP10_H
23 
24 #ifndef PACKAGE
25 # error config.h must be included first in each C++ source file
26 #endif
27 
28 #include <cmath>
29 #if !HAVE_DECL_EXP10
30 # if HAVE_DECL___EXP10
31 inline double exp10(double x) { return __exp10(x); }
32 # elif defined HAVE___BUILTIN_EXP10
33 inline double exp10(double x) { return __builtin_exp10(x); }
34 # else
35 inline double exp10(double x) { return std::pow(10.0, x); }
36 #endif
37 #endif
38 
39 #endif // XAPIAN_INCLUDED_EXP10_H
double exp10(double x)
Definition: exp10.h:35