cos.hpp

Go to the documentation of this file.

// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2021 Tobias Hienzsch
 
#ifndef TETL_COMPLEX_COS_HPP
#define TETL_COMPLEX_COS_HPP
 
#include <etl/_cmath/cos.hpp>
#include <etl/_cmath/cosh.hpp>
#include <etl/_cmath/sin.hpp>
#include <etl/_cmath/sinh.hpp>
#include <etl/_complex/complex.hpp>
 
namespace etl {
 
/// \ingroup complex
template <typename T>
[[nodiscard]] constexpr auto cos(complex<T> const& z) -> complex<T>
{
    auto const x = z.real();
    auto const y = z.imag();
    return {cos(x) * cosh(y), -sin(x) * sinh(y)};
}
 
} // namespace etl
 
#endif // TETL_COMPLEX_COS_HPP