44 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <valarray>10 11// template<class T> class valarray;12 13// template<class T>14// valarray<T>15// atan2(const T& x, const valarray<T>& y);16 17#include <valarray>18#include <cassert>19#include <cstddef>20 21#include "test_macros.h"22#include "valarray_helper.h"23 24int main(int, char**)25{26 {27 typedef double T;28 T a1[] = {-.9, -.5, 0., .5, .75};29 T a3[] = {2.4468543773930902e+00,30 2.1587989303424640e+00,31 1.5707963267948966e+00,32 9.8279372324732905e-01,33 7.8539816339744828e-01};34 const unsigned N = sizeof(a1)/sizeof(a1[0]);35 std::valarray<T> v1(a1, N);36 std::valarray<T> v3 = atan2(.75, 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