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[] = { -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 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] == 3);
40 assert(v1[ 4] == 3);
41 assert(v1[ 5] == 3);
42 assert(v1[ 6] == 6);
43 assert(v1[ 7] == 4);
44 assert(v1[ 8] == 4);
45 assert(v1[ 9] == 4);
46 assert(v1[10] == 10);
47 assert(v1[11] == 5);
48 assert(v1[12] == 5);
49 assert(v1[13] == 5);
50 assert(v1[14] == 14);
51 assert(v1[15] == 6);
52 assert(v1[16] == 6);
53 assert(v1[17] == 6);
54 assert(v1[18] == 18);
55 assert(v1[19] == 19);
56 assert(v1[20] == 20);
57 assert(v1[21] == 21);
58 assert(v1[22] == 10);
59 assert(v1[23] == 10);
60 assert(v1[24] == 10);
61 assert(v1[25] == 25);
62 assert(v1[26] == 11);
63 assert(v1[27] == 11);
64 assert(v1[28] == 11);
65 assert(v1[29] == 29);
66 assert(v1[30] == 12);
67 assert(v1[31] == 12);
68 assert(v1[32] == 12);
69 assert(v1[33] == 33);
70 assert(v1[34] == 13);
71 assert(v1[35] == 13);
72 assert(v1[36] == 13);
73 assert(v1[37] == 37);
74 assert(v1[38] == 38);
75 assert(v1[39] == 39);
76 assert(v1[40] == 40);
77 }
78