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