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
19int 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 (int 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 (int 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 (int i = 0; i < N; ++i)
49        {
50            assert(v2[i].size() == v[i].size());
51            for (int j = 0; j < v[i].size(); ++j)
52                assert(v2[i][j] == -v[i][j]);
53        }
54    }
55    {
56        typedef double T;
57        T a[] = {1, 2.5, 3, 4.25, 5};
58        const unsigned N = sizeof(a)/sizeof(a[0]);
59        std::valarray<T> v(a, N);
60        std::valarray<T> v2 = -(v + v);
61        assert(v2.size() == v.size());
62        for (int i = 0; i < v2.size(); ++i)
63            assert(v2[i] == -2*v[i]);
64    }
65}
66