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 indirect_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      const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
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      const std::size_t N2 = sizeof(a2)/sizeof(a2[0]);
29      std::size_t s[N2] = { 3,  4,  5,  7,  8,  9, 11, 12, 13, 15, 16, 17,
30                           22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36};
31      std::valarray<int> v1(a1, N1);
32      std::valarray<int> v2(a2, N2);
33      std::valarray<std::size_t> ia(s, N2);
34      v1[ia] /= 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] ==  2);
41      assert(v1[ 5] ==  1);
42      assert(v1[ 6] ==  6);
43      assert(v1[ 7] ==  1);
44      assert(v1[ 8] ==  1);
45      assert(v1[ 9] ==  1);
46      assert(v1[10] == 10);
47      assert(v1[11] ==  1);
48      assert(v1[12] ==  1);
49      assert(v1[13] ==  1);
50      assert(v1[14] == 14);
51      assert(v1[15] ==  1);
52      assert(v1[16] ==  1);
53      assert(v1[17] ==  1);
54      assert(v1[18] == 18);
55      assert(v1[19] == 19);
56      assert(v1[20] == 20);
57      assert(v1[21] == 21);
58      assert(v1[22] ==  1);
59      assert(v1[23] ==  1);
60      assert(v1[24] ==  1);
61      assert(v1[25] == 25);
62      assert(v1[26] ==  1);
63      assert(v1[27] ==  1);
64      assert(v1[28] ==  1);
65      assert(v1[29] == 29);
66      assert(v1[30] ==  1);
67      assert(v1[31] ==  1);
68      assert(v1[32] ==  1);
69      assert(v1[33] == 33);
70      assert(v1[34] ==  1);
71      assert(v1[35] ==  1);
72      assert(v1[36] ==  1);
73      assert(v1[37] == 37);
74      assert(v1[38] == 38);
75      assert(v1[39] == 39);
76      assert(v1[40] == 40);
77  }
78