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1 // { dg-do run { target c++17 } }
2
3 // Copyright (C) 2000-2023 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 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 #include <algorithm>
21 #include <functional>
22 #include <testsuite_hooks.h>
23
24 template<typename T>
25 struct A { static const T a; };
26
27 template<typename T>
28 const T A<T>::a = T(3);
29
30 void test02()
31 {
32 VERIFY( 3 == std::clamp(A<int>::a, 2, 4) );
33 VERIFY( 2 == std::clamp(A<int>::a, 1, 2) );
34 VERIFY( 4 == std::clamp(A<int>::a, 4, 6) );
35
36 VERIFY( 3u == std::clamp(A<unsigned int>::a, 2u, 4u) );
37 VERIFY( 2u == std::clamp(A<unsigned int>::a, 1u, 2u) );
38 VERIFY( 4u == std::clamp(A<unsigned int>::a, 4u, 6u) );
39
40 VERIFY( 3l == std::clamp(A<long>::a, 2l, 4l) );
41 VERIFY( 2l == std::clamp(A<long>::a, 1l, 2l) );
42 VERIFY( 4l == std::clamp(A<long>::a, 4l, 6l) );
43
44 VERIFY( 3ul == std::clamp(A<unsigned long>::a, 2ul, 4ul) );
45 VERIFY( 2ul == std::clamp(A<unsigned long>::a, 1ul, 2ul) );
46 VERIFY( 4ul == std::clamp(A<unsigned long>::a, 4ul, 6ul) );
47
48 #ifdef _GLIBCXX_USE_LONG_LONG
49 VERIFY( 3ll == std::clamp(A<long long>::a, 2ll, 4ll) );
50 VERIFY( 2ll == std::clamp(A<long long>::a, 1ll, 2ll) );
51 VERIFY( 4ll == std::clamp(A<long long>::a, 4ll, 6ll) );
52
53 VERIFY( 3ull == std::clamp(A<unsigned long long>::a, 2ull, 4ull) );
54 VERIFY( 2ull == std::clamp(A<unsigned long long>::a, 1ull, 2ull) );
55 VERIFY( 4ull == std::clamp(A<unsigned long long>::a, 4ull, 6ull) );
56 #endif
57
58 VERIFY( (short)3 == std::clamp(A<short>::a, (short)2, (short)4) );
59 VERIFY( (short)2 == std::clamp(A<short>::a, (short)1, (short)2) );
60 VERIFY( (short)4 == std::clamp(A<short>::a, (short)4, (short)6) );
61
62 VERIFY( (unsigned short)3 == std::clamp(A<unsigned short>::a, (unsigned short)2, (unsigned short)4) );
63 VERIFY( (unsigned short)2 == std::clamp(A<unsigned short>::a, (unsigned short)1, (unsigned short)2) );
64 VERIFY( (unsigned short)4 == std::clamp(A<unsigned short>::a, (unsigned short)4, (unsigned short)6) );
65
66 VERIFY( (char)3 == std::clamp(A<char>::a, (char)2, (char)4) );
67 VERIFY( (char)2 == std::clamp(A<char>::a, (char)1, (char)2) );
68 VERIFY( (char)4 == std::clamp(A<char>::a, (char)4, (char)6) );
69
70 VERIFY( (signed char)3 == std::clamp(A<signed char>::a, (signed char)2, (signed char)4) );
71 VERIFY( (signed char)2 == std::clamp(A<signed char>::a, (signed char)1, (signed char)2) );
72 VERIFY( (signed char)4 == std::clamp(A<signed char>::a, (signed char)4, (signed char)6) );
73
74 VERIFY( (unsigned char)3 == std::clamp(A<unsigned char>::a, (unsigned char)2, (unsigned char)4) );
75 VERIFY( (unsigned char)2 == std::clamp(A<unsigned char>::a, (unsigned char)1, (unsigned char)2) );
76 VERIFY( (unsigned char)4 == std::clamp(A<unsigned char>::a, (unsigned char)4, (unsigned char)6) );
77
78 VERIFY( (wchar_t)3 == std::clamp(A<wchar_t>::a, (wchar_t)2, (wchar_t)4) );
79 VERIFY( (wchar_t)2 == std::clamp(A<wchar_t>::a, (wchar_t)1, (wchar_t)2) );
80 VERIFY( (wchar_t)4 == std::clamp(A<wchar_t>::a, (wchar_t)4, (wchar_t)6) );
81
82 VERIFY( 3.0 == std::clamp(A<double>::a, 2.0, 4.0) );
83 VERIFY( 2.0 == std::clamp(A<double>::a, 1.0, 2.0) );
84 VERIFY( 4.0 == std::clamp(A<double>::a, 4.0, 6.0) );
85
86 VERIFY( 3.0f == std::clamp(A<float>::a, 2.0f, 4.0f) );
87 VERIFY( 2.0f == std::clamp(A<float>::a, 1.0f, 2.0f) );
88 VERIFY( 4.0f == std::clamp(A<float>::a, 4.0f, 6.0f) );
89
90 VERIFY( 3.0l == std::clamp(A<long double>::a, 2.0l, 4.0l) );
91 VERIFY( 2.0l == std::clamp(A<long double>::a, 1.0l, 2.0l) );
92 VERIFY( 4.0l == std::clamp(A<long double>::a, 4.0l, 6.0l) );
93 }
94
95 int
96 main()
97 {
98 test02();
99 return 0;
100 }