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 | // tanh(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 | |
24 | int main(int, char**) |
25 | { |
26 | { |
27 | typedef double T; |
28 | T a1[] = {-.9, -.5, 0., .5, .75}; |
29 | T a3[] = {-7.1629787019902447e-01, |
30 | -4.6211715726000974e-01, |
31 | 0.0000000000000000e+00, |
32 | 4.6211715726000974e-01, |
33 | 6.3514895238728730e-01}; |
34 | const unsigned N = sizeof(a1)/sizeof(a1[0]); |
35 | std::valarray<T> v1(a1, N); |
36 | std::valarray<T> v3 = tanh(v: 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 | |