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 indirect_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 
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     const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
27     int a2[] = {  1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11, 12,
28                  13,  14,  15,  16,  17,  18,  19,  20,  21,  22,  23, 24};
29     const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
30     std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
31                          22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
32     std::valarray<int> v1(a1, N1);
33     std::valarray<int> v2(a2, N2);
34     std::valarray<std::size_t> ia(s, N2);
35     v1[ia] >>= 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] ==  1);
42     assert(v1[ 5] ==  0);
43     assert(v1[ 6] ==  6);
44     assert(v1[ 7] ==  0);
45     assert(v1[ 8] ==  0);
46     assert(v1[ 9] ==  0);
47     assert(v1[10] == 10);
48     assert(v1[11] ==  0);
49     assert(v1[12] ==  0);
50     assert(v1[13] ==  0);
51     assert(v1[14] == 14);
52     assert(v1[15] ==  0);
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] ==  0);
60     assert(v1[23] ==  0);
61     assert(v1[24] ==  0);
62     assert(v1[25] == 25);
63     assert(v1[26] ==  0);
64     assert(v1[27] ==  0);
65     assert(v1[28] ==  0);
66     assert(v1[29] == 29);
67     assert(v1[30] ==  0);
68     assert(v1[31] ==  0);
69     assert(v1[32] ==  0);
70     assert(v1[33] == 33);
71     assert(v1[34] ==  0);
72     assert(v1[35] ==  0);
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