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1 | // <experimental/numeric> -*- C++ -*- |
2 | ||
8d9254fc | 3 | // Copyright (C) 2015-2020 Free Software Foundation, Inc. |
6c0b8a53 JW |
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. | |
1ababc8b | 27 | * @ingroup libfund-ts |
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28 | */ |
29 | ||
30 | // | |
31 | // N4336 Working Draft, C++ Extensions for Library Fundamentals, Version 2 | |
32 | // | |
33 | ||
34 | #ifndef _GLIBCXX_EXPERIMENTAL_NUMERIC | |
35 | #define _GLIBCXX_EXPERIMENTAL_NUMERIC 1 | |
36 | ||
37 | #pragma GCC system_header | |
38 | ||
d681026d | 39 | #if __cplusplus >= 201402L |
6c0b8a53 | 40 | |
9e28a774 | 41 | #include <numeric> |
6c0b8a53 | 42 | #include <experimental/type_traits> |
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43 | |
44 | namespace std _GLIBCXX_VISIBILITY(default) | |
45 | { | |
4a15d842 FD |
46 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
47 | ||
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48 | namespace experimental |
49 | { | |
50 | inline namespace fundamentals_v2 | |
51 | { | |
6c0b8a53 JW |
52 | #define __cpp_lib_experimental_gcd_lcm 201411 |
53 | ||
606dda21 | 54 | /// Greatest common divisor |
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55 | template<typename _Mn, typename _Nn> |
56 | constexpr common_type_t<_Mn, _Nn> | |
57 | gcd(_Mn __m, _Nn __n) | |
58 | { | |
13545f19 VV |
59 | static_assert(is_integral_v<_Mn>, "gcd arguments are integers"); |
60 | static_assert(is_integral_v<_Nn>, "gcd arguments are integers"); | |
61 | static_assert(!is_same_v<remove_cv_t<_Mn>, bool>, | |
62 | "gcd arguments are not bools"); | |
63 | static_assert(!is_same_v<remove_cv_t<_Nn>, bool>, | |
64 | "gcd arguments are not bools"); | |
606dda21 | 65 | return std::__detail::__gcd(__m, __n); |
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66 | } |
67 | ||
606dda21 | 68 | /// Least common multiple |
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69 | template<typename _Mn, typename _Nn> |
70 | constexpr common_type_t<_Mn, _Nn> | |
71 | lcm(_Mn __m, _Nn __n) | |
72 | { | |
13545f19 VV |
73 | static_assert(is_integral_v<_Mn>, "lcm arguments are integers"); |
74 | static_assert(is_integral_v<_Nn>, "lcm arguments are integers"); | |
75 | static_assert(!is_same_v<remove_cv_t<_Mn>, bool>, | |
76 | "lcm arguments are not bools"); | |
77 | static_assert(!is_same_v<remove_cv_t<_Nn>, bool>, | |
78 | "lcm arguments are not bools"); | |
606dda21 | 79 | return std::__detail::__lcm(__m, __n); |
6c0b8a53 | 80 | } |
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81 | } // namespace fundamentals_v2 |
82 | } // namespace experimental | |
4a15d842 FD |
83 | |
84 | _GLIBCXX_END_NAMESPACE_VERSION | |
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85 | } // namespace std |
86 | ||
87 | #endif // __cplusplus <= 201103L | |
88 | ||
89 | #endif // _GLIBCXX_EXPERIMENTAL_NUMERIC |