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 valarray;
13
14// valarray operator+() const;
15
16#include <valarray>
17#include <cassert>
18#include <cstddef>
19
20int main()
21{
22    {
23        typedef int T;
24        T a[] = {1, 2, 3, 4, 5};
25        const unsigned N = sizeof(a)/sizeof(a[0]);
26        std::valarray<T> v(a, N);
27        std::valarray<T> v2 = +v;
28        assert(v2.size() == v.size());
29        for (std::size_t i = 0; i < v2.size(); ++i)
30            assert(v2[i] == +v[i]);
31    }
32    {
33        typedef double T;
34        T a[] = {1, 2.5, 3, 4.25, 5};
35        const unsigned N = sizeof(a)/sizeof(a[0]);
36        std::valarray<T> v(a, N);
37        std::valarray<T> v2 = +v;
38        assert(v2.size() == v.size());
39        for (std::size_t i = 0; i < v2.size(); ++i)
40            assert(v2[i] == +v[i]);
41    }
42    {
43        typedef std::valarray<double> T;
44        T a[] = {T(1), T(2), T(3), T(4), T(5)};
45        const unsigned N = sizeof(a)/sizeof(a[0]);
46        std::valarray<T> v(a, N);
47        std::valarray<T> v2 = +v;
48        assert(v2.size() == v.size());
49        for (unsigned i = 0; i < N; ++i)
50        {
51            assert(v2[i].size() == v[i].size());
52            for (std::size_t j = 0; j < v[i].size(); ++j)
53                assert(v2[i][j] == +v[i][j]);
54        }
55    }
56    {
57        typedef double T;
58        T a[] = {1, 2.5, 3, 4.25, 5};
59        const unsigned N = sizeof(a)/sizeof(a[0]);
60        std::valarray<T> v(a, N);
61        std::valarray<T> v2 = +(v + v);
62        assert(v2.size() == v.size());
63        for (std::size_t i = 0; i < v2.size(); ++i)
64            assert(v2[i] == +2*v[i]);
65    }
66}
67