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
main()21 int main()
22 {
23 {
24 typedef int T;
25 T a1[] = {1, 2, 3, 4, 5};
26 T a2[] = {6, 7, 8, 9, 10, 11, 12};
27 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
28 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
29 std::valarray<T> v1(a1, N1);
30 std::valarray<T> v2(a2, N2);
31 std::valarray<T> v1_save = v1;
32 std::valarray<T> v2_save = v2;
33 swap(v1, v2);
34 assert(v1.size() == v2_save.size());
35 for (int i = 0; i < v1.size(); ++i)
36 assert(v1[i] == v2_save[i]);
37 assert(v2.size() == v1_save.size());
38 for (int i = 0; i < v2.size(); ++i)
39 assert(v2[i] == v1_save[i]);
40 }
41 {
42 typedef int T;
43 T a1[] = {1, 2, 3, 4, 5};
44 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
45 const unsigned N2 = 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 (int i = 0; i < v1.size(); ++i)
53 assert(v1[i] == v2_save[i]);
54 assert(v2.size() == v1_save.size());
55 for (int 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 N1 = 0;
62 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
63 std::valarray<T> v1;
64 std::valarray<T> v2(a2, N2);
65 std::valarray<T> v1_save = v1;
66 std::valarray<T> v2_save = v2;
67 swap(v1, v2);
68 assert(v1.size() == v2_save.size());
69 for (int i = 0; i < v1.size(); ++i)
70 assert(v1[i] == v2_save[i]);
71 assert(v2.size() == v1_save.size());
72 for (int i = 0; i < v2.size(); ++i)
73 assert(v2[i] == v1_save[i]);
74 }
75 {
76 typedef int T;
77 const unsigned N1 = 0;
78 const unsigned N2 = 0;
79 std::valarray<T> v1;
80 std::valarray<T> v2;
81 std::valarray<T> v1_save = v1;
82 std::valarray<T> v2_save = v2;
83 swap(v1, v2);
84 assert(v1.size() == v2_save.size());
85 for (int i = 0; i < v1.size(); ++i)
86 assert(v1[i] == v2_save[i]);
87 assert(v2.size() == v1_save.size());
88 for (int i = 0; i < v2.size(); ++i)
89 assert(v2[i] == v1_save[i]);
90 }
91 }
92