1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <valarray>
10
11 // template <class T> class slice_array
12
13 // void operator=(const valarray<value_type>& v) const;
14
15 #include <valarray>
16 #include <cassert>
17
18 #include "test_macros.h"
19
main(int,char **)20 int main(int, char**)
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};
24 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
25 std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
26 std::slice_array<int> s1 = v1[std::slice(1, 5, 3)];
27 s1 = v2;
28 assert(v1.size() == 16);
29 assert(v1[ 0] == 0);
30 assert(v1[ 1] == -1);
31 assert(v1[ 2] == 2);
32 assert(v1[ 3] == 3);
33 assert(v1[ 4] == -2);
34 assert(v1[ 5] == 5);
35 assert(v1[ 6] == 6);
36 assert(v1[ 7] == -3);
37 assert(v1[ 8] == 8);
38 assert(v1[ 9] == 9);
39 assert(v1[10] == -4);
40 assert(v1[11] == 11);
41 assert(v1[12] == 12);
42 assert(v1[13] == -5);
43 assert(v1[14] == 14);
44 assert(v1[15] == 15);
45
46 ASSERT_SAME_TYPE(decltype(s1 = v2), void);
47
48 // The initializer list constructor is disabled in C++03 mode.
49 #if TEST_STD_VER > 03
50 std::valarray<double> m = { 0, 0, 0 };
51 std::slice_array<double> s2 = m[std::slice(0, 3, 1)];
52 s2 = { 1, 2, 3 };
53 assert(m[0] == 1);
54 assert(m[1] == 2);
55 assert(m[2] == 3);
56
57 ASSERT_SAME_TYPE(decltype(s2 = {1, 2, 3}), void);
58 #endif // TEST_STD_VER > 03
59
60 return 0;
61 }
62