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- // Copyright John Maddock 2018.
- // Use, modification and distribution are subject to 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)
- //
- // Tools for operator on complex as well as scalar types.
- //
- #ifndef BOOST_MATH_TOOLS_COMPLEX_HPP
- #define BOOST_MATH_TOOLS_COMPLEX_HPP
- #include <boost/type_traits/is_complex.hpp>
- namespace boost {
- namespace math {
- namespace tools {
- //
- // Specialize this trait for user-defined complex types (ie Boost.Multiprecision):
- //
- template <class T>
- struct is_complex_type : public boost::is_complex<T> {};
- //
- // Use this trait to typecast integer literals to something
- // that will interoperate with T:
- //
- template <class T, bool = is_complex_type<T>::value>
- struct integer_scalar_type
- {
- typedef int type;
- };
- template <class T>
- struct integer_scalar_type<T, true>
- {
- typedef typename T::value_type type;
- };
- template <class T, bool = is_complex_type<T>::value>
- struct unsigned_scalar_type
- {
- typedef unsigned type;
- };
- template <class T>
- struct unsigned_scalar_type<T, true>
- {
- typedef typename T::value_type type;
- };
- template <class T, bool = is_complex_type<T>::value>
- struct scalar_type
- {
- typedef T type;
- };
- template <class T>
- struct scalar_type<T, true>
- {
- typedef typename T::value_type type;
- };
- } } }
- #endif // BOOST_MATH_TOOLS_COMPLEX_HPP
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