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38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2015 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_PERP_HPP
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#define SPROUT_COMPLEX_PERP_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/complex/complex.hpp>
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#include <sprout/type_traits/float_promote.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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namespace sprout {
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//
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// perp
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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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perp(sprout::complex<T> const& x) {
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return sprout::complex<T>(-x.imag(), x.real());
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}
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template<
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typename ArithmeticType,
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typename sprout::enabler_if<std::is_arithmetic<ArithmeticType>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR typename sprout::complex_promote<ArithmeticType>::type
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perp(ArithmeticType x) {
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typedef typename sprout::complex_promote<ArithmeticType>::type type;
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typedef typename type::value_type value_type;
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return type(-value_type(0), value_type(x));
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_COMPLEX_PERP_HPP
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