1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <valarray>
11
12 // template<class T> class valarray;
13
14 // template<class T>
15 // void
16 // swap(valarray<T>& x, valarray<T>& y);
17
18 #include <valarray>
19 #include <cassert>
20 #include <cstddef>
21
main()22 int main()
23 {
24 {
25 typedef int T;
26 T a1[] = {1, 2, 3, 4, 5};
27 T a2[] = {6, 7, 8, 9, 10, 11, 12};
28 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
29 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
30 std::valarray<T> v1(a1, N1);
31 std::valarray<T> v2(a2, N2);
32 std::valarray<T> v1_save = v1;
33 std::valarray<T> v2_save = v2;
34 swap(v1, v2);
35 assert(v1.size() == v2_save.size());
36 for (std::size_t i = 0; i < v1.size(); ++i)
37 assert(v1[i] == v2_save[i]);
38 assert(v2.size() == v1_save.size());
39 for (std::size_t i = 0; i < v2.size(); ++i)
40 assert(v2[i] == v1_save[i]);
41 }
42 {
43 typedef int T;
44 T a1[] = {1, 2, 3, 4, 5};
45 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
46 std::valarray<T> v1(a1, N1);
47 std::valarray<T> v2;
48 std::valarray<T> v1_save = v1;
49 std::valarray<T> v2_save = v2;
50 swap(v1, v2);
51 assert(v1.size() == v2_save.size());
52 for (std::size_t i = 0; i < v1.size(); ++i)
53 assert(v1[i] == v2_save[i]);
54 assert(v2.size() == v1_save.size());
55 for (std::size_t i = 0; i < v2.size(); ++i)
56 assert(v2[i] == v1_save[i]);
57 }
58 {
59 typedef int T;
60 T a2[] = {6, 7, 8, 9, 10, 11, 12};
61 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
62 std::valarray<T> v1;
63 std::valarray<T> v2(a2, N2);
64 std::valarray<T> v1_save = v1;
65 std::valarray<T> v2_save = v2;
66 swap(v1, v2);
67 assert(v1.size() == v2_save.size());
68 for (std::size_t i = 0; i < v1.size(); ++i)
69 assert(v1[i] == v2_save[i]);
70 assert(v2.size() == v1_save.size());
71 for (std::size_t i = 0; i < v2.size(); ++i)
72 assert(v2[i] == v1_save[i]);
73 }
74 {
75 typedef int T;
76 std::valarray<T> v1;
77 std::valarray<T> v2;
78 std::valarray<T> v1_save = v1;
79 std::valarray<T> v2_save = v2;
80 swap(v1, v2);
81 assert(v1.size() == v2_save.size());
82 for (std::size_t i = 0; i < v1.size(); ++i)
83 assert(v1[i] == v2_save[i]);
84 assert(v2.size() == v1_save.size());
85 for (std::size_t i = 0; i < v2.size(); ++i)
86 assert(v2[i] == v1_save[i]);
87 }
88 }
89