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 slice_array
13
14 // const slice_array& operator=(const slice_array& sa) const;
15
16 #include <valarray>
17 #include <cassert>
18
main()19 int main()
20 {
21 {
22 int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
23 int a2[] = {-1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12};
24 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
25 const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
26 v1[std::slice(1, 5, 3)] = v2[std::slice(2, 5, 2)];
27 assert(v1.size() == 16);
28 assert(v1[ 0] == 0);
29 assert(v1[ 1] == -3);
30 assert(v1[ 2] == 2);
31 assert(v1[ 3] == 3);
32 assert(v1[ 4] == -5);
33 assert(v1[ 5] == 5);
34 assert(v1[ 6] == 6);
35 assert(v1[ 7] == -7);
36 assert(v1[ 8] == 8);
37 assert(v1[ 9] == 9);
38 assert(v1[10] == -9);
39 assert(v1[11] == 11);
40 assert(v1[12] == 12);
41 assert(v1[13] == -11);
42 assert(v1[14] == 14);
43 assert(v1[15] == 15);
44 }
45 // Test return value of assignment.
46 {
47 int a1[] = {0, 1, 2};
48 int a2[] = {3, 4, 3};
49 std::valarray<int> v1(a1, 3);
50 std::slice_array<int> s1 = v1[std::slice(1, 1, 1)];
51 std::slice_array<int> s2 = v1[std::slice(0, 1, 1)];
52 std::slice_array<int> const & s3 = (s1 = s2);
53 assert(&s1 == &s3);
54 }
55 }
56