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 >= 201402L
39
40#include <numeric>
41#include <experimental/type_traits>
42
43namespace std _GLIBCXX_VISIBILITY(default)
44{
45namespace experimental
46{
47inline namespace fundamentals_v2
48{
49_GLIBCXX_BEGIN_NAMESPACE_VERSION
50
51#define __cpp_lib_experimental_gcd_lcm 201411
52
53  /// Greatest common divisor
54  template<typename _Mn, typename _Nn>
55    constexpr common_type_t<_Mn, _Nn>
56    gcd(_Mn __m, _Nn __n)
57    {
58      static_assert(is_integral<_Mn>::value, "gcd arguments are integers");
59      static_assert(is_integral<_Nn>::value, "gcd arguments are integers");
60      static_assert(!is_same<_Mn, bool>::value, "gcd arguments are not bools");
61      static_assert(!is_same<_Nn, bool>::value, "gcd arguments are not bools");
62      return std::__detail::__gcd(__m, __n);
63    }
64
65  /// Least common multiple
66  template<typename _Mn, typename _Nn>
67    constexpr common_type_t<_Mn, _Nn>
68    lcm(_Mn __m, _Nn __n)
69    {
70      static_assert(is_integral<_Mn>::value, "lcm arguments are integers");
71      static_assert(is_integral<_Nn>::value, "lcm arguments are integers");
72      static_assert(!is_same<_Mn, bool>::value, "lcm arguments are not bools");
73      static_assert(!is_same<_Nn, bool>::value, "lcm arguments are not bools");
74      return std::__detail::__lcm(__m, __n);
75    }
76
77_GLIBCXX_END_NAMESPACE_VERSION
78} // namespace fundamentals_v2
79} // namespace experimental
80} // namespace std
81
82#endif // __cplusplus <= 201103L
83
84#endif // _GLIBCXX_EXPERIMENTAL_NUMERIC
85