//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <valarray>
// template<class T> class valarray;
// template<class T>
// valarray<T>
// atan2(const valarray<T>& x, const T& y);
#include <valarray>
#include <cassert>
#include <cstddef>
#include "test_macros.h"
#include "valarray_helper.h"
int main(int, char**)
{
{
typedef double T;
T a1[] = {-.9, -.5, 0., .5, .75};
T a3[] = {-8.7605805059819342e-01,
-5.8800260354756750e-01,
0.0000000000000000e+00,
5.8800260354756750e-01,
7.8539816339744828e-01};
const unsigned N = sizeof(a1)/sizeof(a1[0]);
std::valarray<T> v1(a1, N);
std::valarray<T> v3 = atan2(v1, .75);
assert(v3.size() == v1.size());
for (std::size_t i = 0; i < v3.size(); ++i)
assert(is_about(v3[i], a3[i], 10));
}
return 0;
}