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 operator-() const;
14
15 #include <valarray>
16 #include <cassert>
17 #include <cstddef>
18
19 #include "test_macros.h"
20
main(int,char **)21 int main(int, char**)
22 {
23 {
24 typedef int T;
25 T a[] = {1, 2, 3, 4, 5};
26 const unsigned N = sizeof(a)/sizeof(a[0]);
27 std::valarray<T> v(a, N);
28 std::valarray<T> v2 = -v;
29 assert(v2.size() == v.size());
30 for (std::size_t i = 0; i < v2.size(); ++i)
31 assert(v2[i] == -v[i]);
32 }
33 {
34 typedef double T;
35 T a[] = {1, 2.5, 3, 4.25, 5};
36 const unsigned N = sizeof(a)/sizeof(a[0]);
37 std::valarray<T> v(a, N);
38 std::valarray<T> v2 = -v;
39 assert(v2.size() == v.size());
40 for (std::size_t i = 0; i < v2.size(); ++i)
41 assert(v2[i] == -v[i]);
42 }
43 {
44 typedef std::valarray<double> T;
45 T a[] = {T(1), T(2), T(3), T(4), T(5)};
46 const unsigned N = sizeof(a)/sizeof(a[0]);
47 std::valarray<T> v(a, N);
48 std::valarray<T> v2 = -v;
49 assert(v2.size() == v.size());
50 for (unsigned i = 0; i < N; ++i)
51 {
52 assert(v2[i].size() == v[i].size());
53 for (std::size_t j = 0; j < v[i].size(); ++j)
54 assert(v2[i][j] == -v[i][j]);
55 }
56 }
57 {
58 typedef double T;
59 T a[] = {1, 2.5, 3, 4.25, 5};
60 const unsigned N = sizeof(a)/sizeof(a[0]);
61 std::valarray<T> v(a, N);
62 std::valarray<T> v2 = -(v + v);
63 assert(v2.size() == v.size());
64 for (std::size_t i = 0; i < v2.size(); ++i)
65 assert(v2[i] == -2*v[i]);
66 }
67
68 return 0;
69 }
70