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 gslice_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,
23 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
24 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
25 36, 37, 38, 39, 40};
26 int a2[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
27 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24};
28 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
29 std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
30 std::size_t sz[] = {2, 4, 3};
31 std::size_t st[] = {19, 4, 1};
32 typedef std::valarray<std::size_t> sizes;
33 typedef std::valarray<std::size_t> strides;
34 v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
35 strides(st, sizeof(st)/sizeof(st[0])))] &= v2;
36 assert(v1.size() == 41);
37 assert(v1[ 0] == 0);
38 assert(v1[ 1] == 1);
39 assert(v1[ 2] == 2);
40 assert(v1[ 3] == 1);
41 assert(v1[ 4] == 0);
42 assert(v1[ 5] == 1);
43 assert(v1[ 6] == 6);
44 assert(v1[ 7] == 4);
45 assert(v1[ 8] == 0);
46 assert(v1[ 9] == 0);
47 assert(v1[10] == 10);
48 assert(v1[11] == 3);
49 assert(v1[12] == 8);
50 assert(v1[13] == 9);
51 assert(v1[14] == 14);
52 assert(v1[15] == 10);
53 assert(v1[16] == 0);
54 assert(v1[17] == 0);
55 assert(v1[18] == 18);
56 assert(v1[19] == 19);
57 assert(v1[20] == 20);
58 assert(v1[21] == 21);
59 assert(v1[22] == 4);
60 assert(v1[23] == 6);
61 assert(v1[24] == 8);
62 assert(v1[25] == 25);
63 assert(v1[26] == 16);
64 assert(v1[27] == 17);
65 assert(v1[28] == 16);
66 assert(v1[29] == 29);
67 assert(v1[30] == 18);
68 assert(v1[31] == 20);
69 assert(v1[32] == 0);
70 assert(v1[33] == 33);
71 assert(v1[34] == 2);
72 assert(v1[35] == 3);
73 assert(v1[36] == 0);
74 assert(v1[37] == 37);
75 assert(v1[38] == 38);
76 assert(v1[39] == 39);
77 assert(v1[40] == 40);
78
79 return 0;
80 }
81