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 // void swap(valarray& v);
15
16 #include <valarray>
17 #include <cassert>
18
main()19 int main()
20 {
21 {
22 typedef int T;
23 T a1[] = {1, 2, 3, 4, 5};
24 T a2[] = {6, 7, 8, 9, 10, 11, 12};
25 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
26 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
27 std::valarray<T> v1(a1, N1);
28 std::valarray<T> v2(a2, N2);
29 std::valarray<T> v1_save = v1;
30 std::valarray<T> v2_save = v2;
31 v1.swap(v2);
32 assert(v1.size() == v2_save.size());
33 for (int i = 0; i < v1.size(); ++i)
34 assert(v1[i] == v2_save[i]);
35 assert(v2.size() == v1_save.size());
36 for (int i = 0; i < v2.size(); ++i)
37 assert(v2[i] == v1_save[i]);
38 }
39 {
40 typedef int T;
41 T a1[] = {1, 2, 3, 4, 5};
42 const unsigned N1 = sizeof(a1)/sizeof(a1[0]);
43 const unsigned N2 = 0;
44 std::valarray<T> v1(a1, N1);
45 std::valarray<T> v2;
46 std::valarray<T> v1_save = v1;
47 std::valarray<T> v2_save = v2;
48 v1.swap(v2);
49 assert(v1.size() == v2_save.size());
50 for (int i = 0; i < v1.size(); ++i)
51 assert(v1[i] == v2_save[i]);
52 assert(v2.size() == v1_save.size());
53 for (int i = 0; i < v2.size(); ++i)
54 assert(v2[i] == v1_save[i]);
55 }
56 {
57 typedef int T;
58 T a2[] = {6, 7, 8, 9, 10, 11, 12};
59 const unsigned N1 = 0;
60 const unsigned N2 = sizeof(a2)/sizeof(a2[0]);
61 std::valarray<T> v1;
62 std::valarray<T> v2(a2, N2);
63 std::valarray<T> v1_save = v1;
64 std::valarray<T> v2_save = v2;
65 v1.swap(v2);
66 assert(v1.size() == v2_save.size());
67 for (int i = 0; i < v1.size(); ++i)
68 assert(v1[i] == v2_save[i]);
69 assert(v2.size() == v1_save.size());
70 for (int i = 0; i < v2.size(); ++i)
71 assert(v2[i] == v1_save[i]);
72 }
73 {
74 typedef int T;
75 const unsigned N1 = 0;
76 const unsigned N2 = 0;
77 std::valarray<T> v1;
78 std::valarray<T> v2;
79 std::valarray<T> v1_save = v1;
80 std::valarray<T> v2_save = v2;
81 v1.swap(v2);
82 assert(v1.size() == v2_save.size());
83 for (int i = 0; i < v1.size(); ++i)
84 assert(v1[i] == v2_save[i]);
85 assert(v2.size() == v1_save.size());
86 for (int i = 0; i < v2.size(); ++i)
87 assert(v2[i] == v1_save[i]);
88 }
89 }
90