1 // 2004-01-03 Jerry Quinn <jlquinn@optonline.net>
2
3 // Copyright (C) 2004-2018 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20
21 // PR 3247
22
23 // This is DR-253. Test for accessible assignment-operators.
24 #include <valarray>
25 #include <testsuite_hooks.h>
26
check_array(std::valarray<double> & a,double b[])27 bool check_array(std::valarray<double>& a, double b[])
28 {
29 for (unsigned int i=0; i < a.size(); i++)
30 if (a[i] != b[i]) return false;
31 return true;
32 }
33
main()34 int main()
35 {
36 std::valarray<double> val_d(10); // 0 1 2 3 4 5 6 7 8 9
37 std::valarray<double> val_d1(10); // 10 9 8 7 6 5 4 3 2 1
38
39 for (int i=0; i< 10; i++) { val_d[i] = 10; val_d1[i] = i; }
40 std::valarray<double> val_c(val_d);
41 std::valarray<double> val_f(val_d);
42 std::valarray<double> val_g(val_d);
43
44 std::slice slc(1, 3, 3); // 1 4 7
45 val_d[slc] = val_d1[slc];
46
47 double ans1[10] = {10, 1, 10, 10, 4, 10, 10, 7, 10, 10};
48 VERIFY(check_array(val_d, ans1));
49
50 std::valarray<std::size_t> val_size(2);
51 std::valarray<std::size_t> val_stride(2);
52 val_size[0] = 2; val_size[1] = 3;
53 val_stride[0] = 4; val_stride[1] = 1;
54
55 std::gslice gslc(1, val_size, val_stride);
56 val_c[gslc] = val_d1[gslc];
57
58 double ans2[10] = {10, 1, 2, 3, 10, 5, 6, 7, 10, 10};
59 VERIFY(check_array(val_c, ans2));
60
61 std::valarray<bool> val_b(false, 10);
62 val_b[2] = val_b[6] = val_b[9] = true;
63 val_f[val_b] = val_d1[val_b];
64
65 double ans3[10] = {10, 10, 2, 10, 10, 10, 6, 10, 10, 9};
66 VERIFY(check_array(val_f, ans3));
67
68 size_t addr[] = {1, 2, 3, 4, 5};
69 size_t addr1[] = {2, 7, 1, 9, 4};
70 std::valarray<std::size_t> val_indirect(addr, 5);
71 std::valarray<std::size_t> val_indirect1(addr1, 5);
72 val_g[val_indirect] = val_d1[val_indirect1];
73
74 double ans4[10] = {10, 2, 7, 1, 9, 4, 10, 10, 10, 10};
75 VERIFY(check_array(val_g, ans4));
76
77 return 0;
78 }
79