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30 lines
979 B
C++
30 lines
979 B
C++
/*=============================================================================
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Copyright (c) 2011-2019 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_COMPLEX_ATAN_HPP
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#define SPROUT_COMPLEX_ATAN_HPP
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#include <sprout/config.hpp>
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#include <sprout/complex/complex.hpp>
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#include <sprout/complex/arithmetic_operators.hpp>
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#include <sprout/complex/perp.hpp>
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#include <sprout/complex/atanh.hpp>
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namespace sprout {
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//
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// atan
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//
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// catan(z) = -i catanh(iz)
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//
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template<typename T>
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inline SPROUT_CONSTEXPR sprout::complex<T>
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atan(sprout::complex<T> const& x) {
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return -sprout::perp(sprout::atanh(sprout::perp(x)));
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_COMPLEX_ATAN_HPP
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