libstdc++
experimental/numeric
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1// <experimental/numeric> -*- C++ -*-
2
3// Copyright (C) 2015-2017 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library 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// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file experimental/numeric
26 * This is a TS C++ Library header.
27 */
28
29//
30// N4336 Working Draft, C++ Extensions for Library Fundamentals, Version 2
31//
32
33#ifndef _GLIBCXX_EXPERIMENTAL_NUMERIC
34#define _GLIBCXX_EXPERIMENTAL_NUMERIC 1
35
36#pragma GCC system_header
37
38#if __cplusplus <= 201103L
39# include <bits/c++14_warning.h>
40#else
41
42#include <numeric>
43#include <experimental/type_traits>
44
45namespace std _GLIBCXX_VISIBILITY(default)
46{
47namespace experimental
48{
49inline namespace fundamentals_v2
50{
51_GLIBCXX_BEGIN_NAMESPACE_VERSION
52
53#define __cpp_lib_experimental_gcd_lcm 201411
54
55 /// Greatest common divisor
56 template<typename _Mn, typename _Nn>
57 constexpr common_type_t<_Mn, _Nn>
58 gcd(_Mn __m, _Nn __n)
59 {
60 static_assert(is_integral<_Mn>::value, "gcd arguments are integers");
61 static_assert(is_integral<_Nn>::value, "gcd arguments are integers");
62 static_assert(!is_same<_Mn, bool>::value, "gcd arguments are not bools");
63 static_assert(!is_same<_Nn, bool>::value, "gcd arguments are not bools");
64 return std::__detail::__gcd(__m, __n);
65 }
66
67 /// Least common multiple
68 template<typename _Mn, typename _Nn>
69 constexpr common_type_t<_Mn, _Nn>
70 lcm(_Mn __m, _Nn __n)
71 {
72 static_assert(is_integral<_Mn>::value, "lcm arguments are integers");
73 static_assert(is_integral<_Nn>::value, "lcm arguments are integers");
74 static_assert(!is_same<_Mn, bool>::value, "lcm arguments are not bools");
75 static_assert(!is_same<_Nn, bool>::value, "lcm arguments are not bools");
76 return std::__detail::__lcm(__m, __n);
77 }
78
79_GLIBCXX_END_NAMESPACE_VERSION
80} // namespace fundamentals_v2
81} // namespace experimental
82} // namespace std
83
84#endif // __cplusplus <= 201103L
85
86#endif // _GLIBCXX_EXPERIMENTAL_NUMERIC