libstdc++
numeric
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00001 // <experimental/numeric> -*- C++ -*-
00002 
00003 // Copyright (C) 2015-2017 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the
00007 // terms of the GNU General Public License as published by the
00008 // Free Software Foundation; either version 3, or (at your option)
00009 // any later version.
00010 
00011 // This library is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 /** @file experimental/numeric
00026  *  This is a TS C++ Library header.
00027  */
00028 
00029 //
00030 // N4336 Working Draft, C++ Extensions for Library Fundamentals, Version 2
00031 //
00032 
00033 #ifndef _GLIBCXX_EXPERIMENTAL_NUMERIC
00034 #define _GLIBCXX_EXPERIMENTAL_NUMERIC 1
00035 
00036 #pragma GCC system_header
00037 
00038 #if __cplusplus <= 201103L
00039 # include <bits/c++14_warning.h>
00040 #else
00041 
00042 #include <numeric>
00043 #include <experimental/type_traits>
00044 
00045 namespace std _GLIBCXX_VISIBILITY(default)
00046 {
00047 namespace experimental
00048 {
00049 inline namespace fundamentals_v2
00050 {
00051 _GLIBCXX_BEGIN_NAMESPACE_VERSION
00052 
00053 #define __cpp_lib_experimental_gcd_lcm 201411
00054 
00055   /// Greatest common divisor
00056   template<typename _Mn, typename _Nn>
00057     constexpr common_type_t<_Mn, _Nn>
00058     gcd(_Mn __m, _Nn __n)
00059     {
00060       static_assert(is_integral<_Mn>::value, "gcd arguments are integers");
00061       static_assert(is_integral<_Nn>::value, "gcd arguments are integers");
00062       static_assert(!is_same<_Mn, bool>::value, "gcd arguments are not bools");
00063       static_assert(!is_same<_Nn, bool>::value, "gcd arguments are not bools");
00064       return std::__detail::__gcd(__m, __n);
00065     }
00066 
00067   /// Least common multiple
00068   template<typename _Mn, typename _Nn>
00069     constexpr common_type_t<_Mn, _Nn>
00070     lcm(_Mn __m, _Nn __n)
00071     {
00072       static_assert(is_integral<_Mn>::value, "lcm arguments are integers");
00073       static_assert(is_integral<_Nn>::value, "lcm arguments are integers");
00074       static_assert(!is_same<_Mn, bool>::value, "lcm arguments are not bools");
00075       static_assert(!is_same<_Nn, bool>::value, "lcm arguments are not bools");
00076       return std::__detail::__lcm(__m, __n);
00077     }
00078 
00079 _GLIBCXX_END_NAMESPACE_VERSION
00080 } // namespace fundamentals_v2
00081 } // namespace experimental
00082 } // namespace std
00083 
00084 #endif // __cplusplus <= 201103L
00085 
00086 #endif // _GLIBCXX_EXPERIMENTAL_NUMERIC