/*
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[auto_generated]
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boost/numeric/odeint/util/ublas_wrapper.hpp
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[begin_description]
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Resizing for ublas::vector and ublas::matrix
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[end_description]
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Copyright 2011-2013 Mario Mulansky
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Copyright 2011-2013 Karsten Ahnert
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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_UTIL_UBLAS_WRAPPER_HPP_INCLUDED
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#define BOOST_NUMERIC_ODEINT_UTIL_UBLAS_WRAPPER_HPP_INCLUDED
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#include <boost/type_traits/integral_constant.hpp>
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#include <boost/numeric/ublas/vector.hpp>
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#include <boost/numeric/ublas/matrix.hpp>
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#include <boost/numeric/ublas/lu.hpp>
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#include <boost/numeric/ublas/vector_expression.hpp>
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#include <boost/numeric/ublas/matrix_expression.hpp>
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#include <boost/numeric/odeint/algebra/vector_space_algebra.hpp>
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#include <boost/numeric/odeint/algebra/default_operations.hpp>
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#include <boost/numeric/odeint/util/is_resizeable.hpp>
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#include <boost/numeric/odeint/util/state_wrapper.hpp>
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/* extend ublas by a few operations */
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/* map norm_inf onto reduce( v , default_operations::maximum ) */
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namespace boost { namespace numeric { namespace odeint {
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template< typename T , typename A >
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struct vector_space_norm_inf< boost::numeric::ublas::vector<T,A> >
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{
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typedef T result_type;
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result_type operator()( const boost::numeric::ublas::vector<T,A> &x ) const
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{
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return boost::numeric::ublas::norm_inf( x );
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}
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};
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template< class T , class L , class A >
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struct vector_space_norm_inf< boost::numeric::ublas::matrix<T,L,A> >
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{
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typedef T result_type;
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result_type operator()( const boost::numeric::ublas::matrix<T,L,A> &x ) const
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{
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return boost::numeric::ublas::norm_inf( x );
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}
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};
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} } }
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/* additional operations:
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* abs( v )
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* v / w
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* a + v
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*/
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namespace boost { namespace numeric { namespace ublas {
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// elementwise abs - calculates absolute values of the elements
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template<class T>
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struct scalar_abs: public scalar_unary_functor<T> {
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typedef typename scalar_unary_functor<T>::value_type value_type;
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typedef typename scalar_unary_functor<T>::argument_type argument_type;
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typedef typename scalar_unary_functor<T>::result_type result_type;
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static BOOST_UBLAS_INLINE
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result_type apply (argument_type t) {
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using std::abs;
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return abs (t);
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}
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};
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// (abs v) [i] = abs (v [i])
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template<class E>
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BOOST_UBLAS_INLINE
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typename vector_unary_traits<E, scalar_abs<typename E::value_type> >::result_type
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abs (const vector_expression<E> &e) {
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typedef typename vector_unary_traits<E, scalar_abs<typename E::value_type> >::expression_type expression_type;
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return expression_type (e ());
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}
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// (abs m) [i] = abs (m [i])
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template<class E>
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BOOST_UBLAS_INLINE
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typename matrix_unary1_traits<E, scalar_abs<typename E::value_type> >::result_type
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abs (const matrix_expression<E> &e) {
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typedef typename matrix_unary1_traits<E, scalar_abs<typename E::value_type> >::expression_type expression_type;
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return expression_type (e ());
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}
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// elementwise division (v1 / v2) [i] = v1 [i] / v2 [i]
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template<class E1, class E2>
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BOOST_UBLAS_INLINE
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typename vector_binary_traits<E1, E2, scalar_divides<typename E1::value_type,
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typename E2::value_type> >::result_type
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operator / (const vector_expression<E1> &e1,
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const vector_expression<E2> &e2) {
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typedef typename vector_binary_traits<E1, E2, scalar_divides<typename E1::value_type,
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typename E2::value_type> >::expression_type expression_type;
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return expression_type (e1 (), e2 ());
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}
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// elementwise division (m1 / m2) [i] = m1 [i] / m2 [i]
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template<class E1, class E2>
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BOOST_UBLAS_INLINE
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typename matrix_binary_traits<E1, E2, scalar_divides<typename E1::value_type,
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typename E2::value_type> >::result_type
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operator / (const matrix_expression<E1> &e1,
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const matrix_expression<E2> &e2) {
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typedef typename matrix_binary_traits<E1, E2, scalar_divides<typename E1::value_type,
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typename E2::value_type> >::expression_type expression_type;
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return expression_type (e1 (), e2 ());
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}
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// addition with scalar
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// (t + v) [i] = t + v [i]
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template<class T1, class E2>
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BOOST_UBLAS_INLINE
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typename enable_if< is_convertible<T1, typename E2::value_type >,
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typename vector_binary_scalar1_traits<const T1, E2, scalar_plus<T1, typename E2::value_type> >::result_type
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>::type
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operator + (const T1 &e1,
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const vector_expression<E2> &e2) {
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typedef typename vector_binary_scalar1_traits<const T1, E2, scalar_plus<T1, typename E2::value_type> >::expression_type expression_type;
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return expression_type (e1, e2 ());
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}
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// addition with scalar
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// (t + m) [i] = t + m [i]
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template<class T1, class E2>
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BOOST_UBLAS_INLINE
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typename enable_if< is_convertible<T1, typename E2::value_type >,
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typename matrix_binary_scalar1_traits<const T1, E2, scalar_plus<T1, typename E2::value_type> >::result_type
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>::type
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operator + (const T1 &e1,
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const matrix_expression<E2> &e2) {
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typedef typename matrix_binary_scalar1_traits<const T1, E2, scalar_plus<T1, typename E2::value_type> >::expression_type expression_type;
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return expression_type (e1, e2 ());
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}
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} } }
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/* add resize functionality */
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namespace boost {
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namespace numeric {
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namespace odeint {
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/*
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* resizeable specialization for boost::numeric::ublas::vector
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*/
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template< class T , class A >
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struct is_resizeable< boost::numeric::ublas::vector< T , A > >
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{
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typedef boost::true_type type;
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const static bool value = type::value;
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};
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/*
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* resizeable specialization for boost::numeric::ublas::matrix
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*/
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template< class T , class L , class A >
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struct is_resizeable< boost::numeric::ublas::matrix< T , L , A > >
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{
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typedef boost::true_type type;
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const static bool value = type::value;
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};
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/*
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* resizeable specialization for boost::numeric::ublas::permutation_matrix
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*/
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template< class T , class A >
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struct is_resizeable< boost::numeric::ublas::permutation_matrix< T , A > >
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{
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typedef boost::true_type type;
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const static bool value = type::value;
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};
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// specialization for ublas::matrix
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// same size and resize specialization for matrix-matrix resizing
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template< class T , class L , class A , class T2 , class L2 , class A2 >
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struct same_size_impl< boost::numeric::ublas::matrix< T , L , A > , boost::numeric::ublas::matrix< T2 , L2 , A2 > >
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{
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static bool same_size( const boost::numeric::ublas::matrix< T , L , A > &m1 ,
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const boost::numeric::ublas::matrix< T2 , L2 , A2 > &m2 )
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{
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return ( ( m1.size1() == m2.size1() ) && ( m1.size2() == m2.size2() ) );
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}
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};
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template< class T , class L , class A , class T2 , class L2 , class A2 >
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struct resize_impl< boost::numeric::ublas::matrix< T , L , A > , boost::numeric::ublas::matrix< T2 , L2 , A2 > >
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{
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static void resize( boost::numeric::ublas::matrix< T , L , A > &m1 ,
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const boost::numeric::ublas::matrix< T2 , L2 , A2 > &m2 )
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{
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m1.resize( m2.size1() , m2.size2() );
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}
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};
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// same size and resize specialization for matrix-vector resizing
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template< class T , class L , class A , class T_V , class A_V >
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struct same_size_impl< boost::numeric::ublas::matrix< T , L , A > , boost::numeric::ublas::vector< T_V , A_V > >
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{
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static bool same_size( const boost::numeric::ublas::matrix< T , L , A > &m ,
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const boost::numeric::ublas::vector< T_V , A_V > &v )
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{
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return ( ( m.size1() == v.size() ) && ( m.size2() == v.size() ) );
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}
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};
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template< class T , class L , class A , class T_V , class A_V >
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struct resize_impl< boost::numeric::ublas::matrix< T , L , A > , boost::numeric::ublas::vector< T_V , A_V > >
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{
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static void resize( boost::numeric::ublas::matrix< T , L , A > &m ,
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const boost::numeric::ublas::vector< T_V , A_V > &v )
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{
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m.resize( v.size() , v.size() );
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}
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};
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// specialization for ublas::permutation_matrix
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// same size and resize specialization for matrix-vector resizing
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template< class T , class A , class T_V , class A_V >
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struct same_size_impl< boost::numeric::ublas::permutation_matrix< T , A > ,
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boost::numeric::ublas::vector< T_V , A_V > >
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{
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static bool same_size( const boost::numeric::ublas::permutation_matrix< T , A > &m ,
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const boost::numeric::ublas::vector< T_V , A_V > &v )
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{
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return ( m.size() == v.size() ); // && ( m.size2() == v.size() ) );
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}
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};
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template< class T , class A , class T_V , class A_V >
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struct resize_impl< boost::numeric::ublas::vector< T_V , A_V > ,
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boost::numeric::ublas::permutation_matrix< T , A > >
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{
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static void resize( const boost::numeric::ublas::vector< T_V , A_V > &v,
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boost::numeric::ublas::permutation_matrix< T , A > &m )
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{
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m.resize( v.size() , v.size() );
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}
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};
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template< class T , class A >
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struct state_wrapper< boost::numeric::ublas::permutation_matrix< T , A > > // with resizing
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{
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typedef boost::numeric::ublas::permutation_matrix< T , A > state_type;
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typedef state_wrapper< state_type > state_wrapper_type;
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state_type m_v;
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state_wrapper() : m_v( 1 ) // permutation matrix constructor requires a size, choose 1 as default
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{ }
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};
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} } }
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#endif // BOOST_NUMERIC_ODEINT_UTIL_UBLAS_WRAPPER_HPP_INCLUDED
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