| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // <valarray> |
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| 10 | |
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| 11 | // template<class T> class valarray; |
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| 12 | |
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| 13 | // template<class T> |
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| 14 | // valarray<T> |
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| 15 | // atan2(const valarray<T>& x, const valarray<T>& y); |
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| 16 | |
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| 17 | #include <valarray> |
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| 18 | #include <cassert> |
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| 19 | #include <cstddef> |
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| 20 | |
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| 21 | #include "test_macros.h" |
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| 22 | #include "valarray_helper.h" |
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| 23 | |
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| 24 | int main(int, char**) |
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| 25 | { |
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| 26 | { |
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| 27 | typedef double T; |
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| 28 | T a1[] = {-.9, -.5, 0., .5, .75}; |
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| 29 | T a2[] = {-.8, .25, 0.375, -.5, .75}; |
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| 30 | T a3[] = {-2.2974386674766221e+00, |
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| 31 | -1.1071487177940904e+00, |
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| 32 | 0.0000000000000000e+00, |
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| 33 | 2.3561944901923448e+00, |
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| 34 | 7.8539816339744828e-01}; |
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| 35 | const unsigned N = sizeof(a1)/sizeof(a1[0]); |
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| 36 | std::valarray<T> v1(a1, N); |
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| 37 | std::valarray<T> v2(a2, N); |
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| 38 | std::valarray<T> v3 = atan2(v: v1, w: v2); |
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| 39 | assert(v3.size() == v1.size()); |
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| 40 | for (std::size_t i = 0; i < v3.size(); ++i) |
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| 41 | assert(is_about(v3[i], a3[i], 10)); |
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| 42 | } |
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| 43 | |
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| 44 | return 0; |
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| 45 | } |
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| 46 | |
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