53 lines
1.4 KiB
Plaintext
53 lines
1.4 KiB
Plaintext
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/*
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[auto_generated]
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boost/numeric/odeint/algebra/detail/extract_value_type.hpp
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[begin_description]
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Extract true value type from complex types (eg. std::complex)
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[end_description]
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Copyright 2013 Karsten Ahnert
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Copyright 2013 Mario Mulansky
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or
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copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_NUMERIC_ODEINT_ALGEBRA_DETAIL_EXTRACT_VALUE_TYPE_HPP_INCLUDED
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#define BOOST_NUMERIC_ODEINT_ALGEBRA_DETAIL_EXTRACT_VALUE_TYPE_HPP_INCLUDED
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#include <boost/utility.hpp>
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#include <boost/mpl/has_xxx.hpp>
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BOOST_MPL_HAS_XXX_TRAIT_DEF(value_type)
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namespace boost {
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namespace numeric {
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namespace odeint {
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namespace detail {
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template< typename S , typename Enabler = void >
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struct extract_value_type {};
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// as long as value_types are defined we go down the value_type chain
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// e.g. returning S::value_type::value_type::value_type
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template< typename S >
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struct extract_value_type<S , typename boost::disable_if< has_value_type<S> >::type >
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{
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// no value_type defined, return S
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typedef S type;
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};
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template< typename S >
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struct extract_value_type< S , typename boost::enable_if< has_value_type<S> >::type >
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{
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// go down the value_type
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typedef typename extract_value_type< typename S::value_type >::type type;
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};
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} } } }
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#endif
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