1*38fd1498Szrj// <experimental/numeric> -*- C++ -*- 2*38fd1498Szrj 3*38fd1498Szrj// Copyright (C) 2015-2018 Free Software Foundation, Inc. 4*38fd1498Szrj// 5*38fd1498Szrj// This file is part of the GNU ISO C++ Library. This library is free 6*38fd1498Szrj// software; you can redistribute it and/or modify it under the 7*38fd1498Szrj// terms of the GNU General Public License as published by the 8*38fd1498Szrj// Free Software Foundation; either version 3, or (at your option) 9*38fd1498Szrj// any later version. 10*38fd1498Szrj 11*38fd1498Szrj// This library is distributed in the hope that it will be useful, 12*38fd1498Szrj// but WITHOUT ANY WARRANTY; without even the implied warranty of 13*38fd1498Szrj// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*38fd1498Szrj// GNU General Public License for more details. 15*38fd1498Szrj 16*38fd1498Szrj// Under Section 7 of GPL version 3, you are granted additional 17*38fd1498Szrj// permissions described in the GCC Runtime Library Exception, version 18*38fd1498Szrj// 3.1, as published by the Free Software Foundation. 19*38fd1498Szrj 20*38fd1498Szrj// You should have received a copy of the GNU General Public License and 21*38fd1498Szrj// a copy of the GCC Runtime Library Exception along with this program; 22*38fd1498Szrj// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23*38fd1498Szrj// <http://www.gnu.org/licenses/>. 24*38fd1498Szrj 25*38fd1498Szrj/** @file experimental/numeric 26*38fd1498Szrj * This is a TS C++ Library header. 27*38fd1498Szrj */ 28*38fd1498Szrj 29*38fd1498Szrj// 30*38fd1498Szrj// N4336 Working Draft, C++ Extensions for Library Fundamentals, Version 2 31*38fd1498Szrj// 32*38fd1498Szrj 33*38fd1498Szrj#ifndef _GLIBCXX_EXPERIMENTAL_NUMERIC 34*38fd1498Szrj#define _GLIBCXX_EXPERIMENTAL_NUMERIC 1 35*38fd1498Szrj 36*38fd1498Szrj#pragma GCC system_header 37*38fd1498Szrj 38*38fd1498Szrj#if __cplusplus >= 201402L 39*38fd1498Szrj 40*38fd1498Szrj#include <numeric> 41*38fd1498Szrj#include <experimental/type_traits> 42*38fd1498Szrj 43*38fd1498Szrjnamespace std _GLIBCXX_VISIBILITY(default) 44*38fd1498Szrj{ 45*38fd1498Szrj_GLIBCXX_BEGIN_NAMESPACE_VERSION 46*38fd1498Szrj 47*38fd1498Szrjnamespace experimental 48*38fd1498Szrj{ 49*38fd1498Szrjinline namespace fundamentals_v2 50*38fd1498Szrj{ 51*38fd1498Szrj#define __cpp_lib_experimental_gcd_lcm 201411 52*38fd1498Szrj 53*38fd1498Szrj /// Greatest common divisor 54*38fd1498Szrj template<typename _Mn, typename _Nn> 55*38fd1498Szrj constexpr common_type_t<_Mn, _Nn> 56*38fd1498Szrj gcd(_Mn __m, _Nn __n) 57*38fd1498Szrj { 58*38fd1498Szrj static_assert(is_integral_v<_Mn>, "gcd arguments are integers"); 59*38fd1498Szrj static_assert(is_integral_v<_Nn>, "gcd arguments are integers"); 60*38fd1498Szrj static_assert(!is_same_v<remove_cv_t<_Mn>, bool>, 61*38fd1498Szrj "gcd arguments are not bools"); 62*38fd1498Szrj static_assert(!is_same_v<remove_cv_t<_Nn>, bool>, 63*38fd1498Szrj "gcd arguments are not bools"); 64*38fd1498Szrj return std::__detail::__gcd(__m, __n); 65*38fd1498Szrj } 66*38fd1498Szrj 67*38fd1498Szrj /// Least common multiple 68*38fd1498Szrj template<typename _Mn, typename _Nn> 69*38fd1498Szrj constexpr common_type_t<_Mn, _Nn> 70*38fd1498Szrj lcm(_Mn __m, _Nn __n) 71*38fd1498Szrj { 72*38fd1498Szrj static_assert(is_integral_v<_Mn>, "lcm arguments are integers"); 73*38fd1498Szrj static_assert(is_integral_v<_Nn>, "lcm arguments are integers"); 74*38fd1498Szrj static_assert(!is_same_v<remove_cv_t<_Mn>, bool>, 75*38fd1498Szrj "lcm arguments are not bools"); 76*38fd1498Szrj static_assert(!is_same_v<remove_cv_t<_Nn>, bool>, 77*38fd1498Szrj "lcm arguments are not bools"); 78*38fd1498Szrj return std::__detail::__lcm(__m, __n); 79*38fd1498Szrj } 80*38fd1498Szrj} // namespace fundamentals_v2 81*38fd1498Szrj} // namespace experimental 82*38fd1498Szrj 83*38fd1498Szrj_GLIBCXX_END_NAMESPACE_VERSION 84*38fd1498Szrj} // namespace std 85*38fd1498Szrj 86*38fd1498Szrj#endif // __cplusplus <= 201103L 87*38fd1498Szrj 88*38fd1498Szrj#endif // _GLIBCXX_EXPERIMENTAL_NUMERIC 89