1// <experimental/numeric> -*- C++ -*- 2 3// Copyright (C) 2015-2018 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{ 45_GLIBCXX_BEGIN_NAMESPACE_VERSION 46 47namespace experimental 48{ 49inline namespace fundamentals_v2 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_v<_Mn>, "gcd arguments are integers"); 59 static_assert(is_integral_v<_Nn>, "gcd arguments are integers"); 60 static_assert(!is_same_v<remove_cv_t<_Mn>, bool>, 61 "gcd arguments are not bools"); 62 static_assert(!is_same_v<remove_cv_t<_Nn>, bool>, 63 "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_v<_Mn>, "lcm arguments are integers"); 73 static_assert(is_integral_v<_Nn>, "lcm arguments are integers"); 74 static_assert(!is_same_v<remove_cv_t<_Mn>, bool>, 75 "lcm arguments are not bools"); 76 static_assert(!is_same_v<remove_cv_t<_Nn>, bool>, 77 "lcm arguments are not bools"); 78 return std::__detail::__lcm(__m, __n); 79 } 80} // namespace fundamentals_v2 81} // namespace experimental 82 83_GLIBCXX_END_NAMESPACE_VERSION 84} // namespace std 85 86#endif // __cplusplus <= 201103L 87 88#endif // _GLIBCXX_EXPERIMENTAL_NUMERIC 89