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 // void operator<<= (const valarray<value_type>& v) const;
15
16 #include <valarray>
17 #include <cassert>
18
main()19 int 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[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12,
26 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24};
27 std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
28 std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
29 std::size_t sz[] = {2, 4, 3};
30 std::size_t st[] = {19, 4, 1};
31 typedef std::valarray<std::size_t> sizes;
32 typedef std::valarray<std::size_t> strides;
33 v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
34 strides(st, sizeof(st)/sizeof(st[0])))] <<= v2;
35 assert(v1.size() == 41);
36 assert(v1[ 0] == 0);
37 assert(v1[ 1] == 1);
38 assert(v1[ 2] == 2);
39 assert(v1[ 3] == 6);
40 assert(v1[ 4] == 16);
41 assert(v1[ 5] == 40);
42 assert(v1[ 6] == 6);
43 assert(v1[ 7] == 112);
44 assert(v1[ 8] == 256);
45 assert(v1[ 9] == 576);
46 assert(v1[10] == 10);
47 assert(v1[11] == 1408);
48 assert(v1[12] == 3072);
49 assert(v1[13] == 6656);
50 assert(v1[14] == 14);
51 assert(v1[15] == 15360);
52 assert(v1[16] == 32768);
53 assert(v1[17] == 69632);
54 assert(v1[18] == 18);
55 assert(v1[19] == 19);
56 assert(v1[20] == 20);
57 assert(v1[21] == 21);
58 assert(v1[22] == 180224);
59 assert(v1[23] == 376832);
60 assert(v1[24] == 786432);
61 assert(v1[25] == 25);
62 assert(v1[26] == 1703936);
63 assert(v1[27] == 3538944);
64 assert(v1[28] == 7340032);
65 assert(v1[29] == 29);
66 assert(v1[30] == 15728640);
67 assert(v1[31] == 32505856);
68 assert(v1[32] == 67108864);
69 assert(v1[33] == 33);
70 assert(v1[34] == 142606336);
71 assert(v1[35] == 293601280);
72 assert(v1[36] == 603979776);
73 assert(v1[37] == 37);
74 assert(v1[38] == 38);
75 assert(v1[39] == 39);
76 assert(v1[40] == 40);
77 }
78