Sprout/sprout/complex/cos.hpp
2014-07-19 20:03:13 +09:00

29 lines
900 B
C++

/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_COMPLEX_COS_HPP
#define SPROUT_COMPLEX_COS_HPP
#include <sprout/config.hpp>
#include <sprout/complex/complex.hpp>
#include <sprout/complex/perp.hpp>
#include <sprout/complex/cosh.hpp>
namespace sprout {
//
// cos
//
// ccos(z) = ccosh(iz)
//
template<typename T>
inline SPROUT_CONSTEXPR sprout::complex<T>
cos(sprout::complex<T> const& x) {
return sprout::cosh(sprout::perp(x));
}
} // namespace sprout
#endif // #ifndef SPROUT_COMPLEX_COS_HPP