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 gslice_array
13
14// const gslice_array& operator=(const gslice_array& ga) const;
15
16#include <valarray>
17#include <cassert>
18
19int main()
20{
21    int a1[] = { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11,
22                12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
23                24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
24                36, 37, 38, 39, 40};
25    int a2[] = { -0,  -1,  -2,  -3,  -4,  -5,  -6,  -7,  -8,  -9, -10, -11,
26                -12, -13, -14, -15, -16, -17, -18, -19, -20, -21, -22, -23,
27                -24, -25, -26, -27, -28, -29, -30, -31, -32, -33, -34, -35,
28                -36, -37};
29    std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
30    const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
31    std::size_t sz[] = {2, 4, 3};
32    std::size_t st[] = {19, 4, 1};
33    typedef std::valarray<std::size_t> sizes;
34    typedef std::valarray<std::size_t> strides;
35    v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
36                      strides(st, sizeof(st)/sizeof(st[0])))]
37        = v2[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
38                            strides(st, sizeof(st)/sizeof(st[0])))];
39    assert(v1.size() == 41);
40    assert(v1[ 0] ==  0);
41    assert(v1[ 1] ==  1);
42    assert(v1[ 2] ==  2);
43    assert(v1[ 3] == -3);
44    assert(v1[ 4] == -4);
45    assert(v1[ 5] == -5);
46    assert(v1[ 6] ==  6);
47    assert(v1[ 7] == -7);
48    assert(v1[ 8] == -8);
49    assert(v1[ 9] == -9);
50    assert(v1[10] == 10);
51    assert(v1[11] == -11);
52    assert(v1[12] == -12);
53    assert(v1[13] == -13);
54    assert(v1[14] == 14);
55    assert(v1[15] == -15);
56    assert(v1[16] == -16);
57    assert(v1[17] == -17);
58    assert(v1[18] == 18);
59    assert(v1[19] == 19);
60    assert(v1[20] == 20);
61    assert(v1[21] == 21);
62    assert(v1[22] == -22);
63    assert(v1[23] == -23);
64    assert(v1[24] == -24);
65    assert(v1[25] == 25);
66    assert(v1[26] == -26);
67    assert(v1[27] == -27);
68    assert(v1[28] == -28);
69    assert(v1[29] == 29);
70    assert(v1[30] == -30);
71    assert(v1[31] == -31);
72    assert(v1[32] == -32);
73    assert(v1[33] == 33);
74    assert(v1[34] == -34);
75    assert(v1[35] == -35);
76    assert(v1[36] == -36);
77    assert(v1[37] == 37);
78    assert(v1[38] == 38);
79    assert(v1[39] == 39);
80    assert(v1[40] == 40);
81}
82