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 // template<class T>
14 // valarray<T>
15 // tan(const valarray<T>& x);
16
17 #include <valarray>
18 #include <cassert>
19 #include <cstddef>
20
21 #include "test_macros.h"
22 #include "valarray_helper.h"
23
main(int,char **)24 int main(int, char**)
25 {
26 {
27 typedef double T;
28 T a1[] = {-.9, -.5, 0., .5, .75};
29 T a3[] = {-1.2601582175503390e+00,
30 -5.4630248984379048e-01,
31 0.0000000000000000e+00,
32 5.4630248984379048e-01,
33 9.3159645994407259e-01};
34 const unsigned N = sizeof(a1)/sizeof(a1[0]);
35 std::valarray<T> v1(a1, N);
36 std::valarray<T> v3 = tan(v1);
37 assert(v3.size() == v1.size());
38 for (std::size_t i = 0; i < v3.size(); ++i)
39 assert(is_about(v3[i], a3[i], 10));
40 }
41
42 return 0;
43 }
44