1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <valarray>
10 
11 // template<class T> class valarray;
12 
13 // valarray(const valarray<value_type>& v);
14 
15 #include <valarray>
16 #include <cassert>
17 #include <cstddef>
18 
19 int main()
20 {
21     {
22         typedef int T;
23         T a[] = {1, 2, 3, 4, 5};
24         const unsigned N = sizeof(a)/sizeof(a[0]);
25         std::valarray<T> v(a, N);
26         std::valarray<T> v2 = v;
27         assert(v2.size() == v.size());
28         for (std::size_t i = 0; i < v2.size(); ++i)
29             assert(v2[i] == v[i]);
30     }
31     {
32         typedef double T;
33         T a[] = {1, 2.5, 3, 4.25, 5};
34         const unsigned N = sizeof(a)/sizeof(a[0]);
35         std::valarray<T> v(a, N);
36         std::valarray<T> v2 = v;
37         assert(v2.size() == v.size());
38         for (std::size_t i = 0; i < v2.size(); ++i)
39             assert(v2[i] == v[i]);
40     }
41     {
42         typedef std::valarray<double> T;
43         T a[] = {T(1), T(2), T(3), T(4), T(5)};
44         const unsigned N = sizeof(a)/sizeof(a[0]);
45         std::valarray<T> v(a, N);
46         std::valarray<T> v2 = v;
47         assert(v2.size() == v.size());
48         for (unsigned i = 0; i < N; ++i)
49         {
50             assert(v2[i].size() == v[i].size());
51             for (std::size_t j = 0; j < v[i].size(); ++j)
52                 assert(v2[i][j] == v[i][j]);
53         }
54     }
55 }
56