571 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
		
		
			
		
	
	
			571 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
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								//
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								//  Copyright (c) 2000-2002
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								//  Joerg Walter, Mathias Koch
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								//
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								//  Distributed under the Boost Software License, Version 1.0. (See
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								//  accompanying file LICENSE_1_0.txt or copy at
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								//  http://www.boost.org/LICENSE_1_0.txt)
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								//
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								//  The authors gratefully acknowledge the support of
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								//  GeNeSys mbH & Co. KG in producing this work.
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								//
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								#ifndef _BOOST_UBLAS_VECTOR_ASSIGN_
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								#define _BOOST_UBLAS_VECTOR_ASSIGN_
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								#include <boost/numeric/ublas/functional.hpp> // scalar_assign
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								// Required for make_conformant storage
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								#include <vector>
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								// Iterators based on ideas of Jeremy Siek
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								namespace boost { namespace numeric { namespace ublas {
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								namespace detail {
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								    // Weak equality check - useful to compare equality two arbitary vector expression results.
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								    // Since the actual expressions are unknown, we check for and arbitary error bound
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								    // on the relative error.
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								    // For a linear expression the infinity norm makes sense as we do not know how the elements will be
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								    // combined in the expression. False positive results are inevitable for arbirary expressions!
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								    template<class E1, class E2, class S>
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								    BOOST_UBLAS_INLINE
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								    bool equals (const vector_expression<E1> &e1, const vector_expression<E2> &e2, S epsilon, S min_norm) {
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								        return norm_inf (e1 - e2) <= epsilon *
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								               std::max<S> (std::max<S> (norm_inf (e1), norm_inf (e2)), min_norm);
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								    }
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								    template<class E1, class E2>
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								    BOOST_UBLAS_INLINE
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								    bool expression_type_check (const vector_expression<E1> &e1, const vector_expression<E2> &e2) {
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								        typedef typename type_traits<typename promote_traits<typename E1::value_type,
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								                                     typename E2::value_type>::promote_type>::real_type real_type;
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								        return equals (e1, e2, BOOST_UBLAS_TYPE_CHECK_EPSILON, BOOST_UBLAS_TYPE_CHECK_MIN);
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								    }
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								    // Make sparse proxies conformant
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								    template<class V, class E>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void make_conformant (V &v, const vector_expression<E> &e) {
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								        BOOST_UBLAS_CHECK (v.size () == e ().size (), bad_size ());
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								        typedef typename V::size_type size_type;
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								        typedef typename V::difference_type difference_type;
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								        typedef typename V::value_type value_type;
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								        // FIXME unbounded_array with push_back maybe better
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								        std::vector<size_type> index;
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								        typename V::iterator it (v.begin ());
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								        typename V::iterator it_end (v.end ());
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								        typename E::const_iterator ite (e ().begin ());
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								        typename E::const_iterator ite_end (e ().end ());
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								        if (it != it_end && ite != ite_end) {
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								            size_type it_index = it.index (), ite_index = ite.index ();
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								            while (true) {
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								                difference_type compare = it_index - ite_index;
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								                if (compare == 0) {
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								                    ++ it, ++ ite;
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								                    if (it != it_end && ite != ite_end) {
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								                        it_index = it.index ();
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								                        ite_index = ite.index ();
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								                    } else
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								                        break;
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								                } else if (compare < 0) {
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								                    increment (it, it_end, - compare);
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								                    if (it != it_end)
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								                        it_index = it.index ();
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								                    else
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								                        break;
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								                } else if (compare > 0) {
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								                    if (*ite != value_type/*zero*/())
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								                        index.push_back (ite.index ());
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								                    ++ ite;
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								                    if (ite != ite_end)
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								                        ite_index = ite.index ();
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								                    else
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								                        break;
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								                }
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								            }
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								        }
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								        while (ite != ite_end) {
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								            if (*ite != value_type/*zero*/())
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								                index.push_back (ite.index ());
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								            ++ ite;
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								        }
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								        for (size_type k = 0; k < index.size (); ++ k)
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								            v (index [k]) = value_type/*zero*/();
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								    }
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								}//namespace detail
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								    // Explicitly iterating
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								    template<template <class T1, class T2> class F, class V, class T>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void iterating_vector_assign_scalar (V &v, const T &t) {
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								        typedef F<typename V::iterator::reference, T> functor_type;
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								        typedef typename V::difference_type difference_type;
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								        difference_type size (v.size ());
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								        typename V::iterator it (v.begin ());
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								        BOOST_UBLAS_CHECK (v.end () - it == size, bad_size ());
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								#ifndef BOOST_UBLAS_USE_DUFF_DEVICE
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								        while (-- size >= 0)
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								            functor_type::apply (*it, t), ++ it;
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								#else
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								        DD (size, 4, r, (functor_type::apply (*it, t), ++ it));
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								#endif
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								    }
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								    // Explicitly case
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								    template<template <class T1, class T2> class F, class V, class T>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void indexing_vector_assign_scalar (V &v, const T &t) {
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								        typedef F<typename V::reference, T> functor_type;
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								        typedef typename V::size_type size_type;
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								        size_type size (v.size ());
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								#ifndef BOOST_UBLAS_USE_DUFF_DEVICE
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								        for (size_type i = 0; i < size; ++ i)
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								            functor_type::apply (v (i), t);
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								#else
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								        size_type i (0);
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								        DD (size, 4, r, (functor_type::apply (v (i), t), ++ i));
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								#endif
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								    }
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								    // Dense (proxy) case
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								    template<template <class T1, class T2> class F, class V, class T>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void vector_assign_scalar (V &v, const T &t, dense_proxy_tag) {
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								#ifdef BOOST_UBLAS_USE_INDEXING
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								        indexing_vector_assign_scalar<F> (v, t);
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								#elif BOOST_UBLAS_USE_ITERATING
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								        iterating_vector_assign_scalar<F> (v, t);
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								#else
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								        typedef typename V::size_type size_type;
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								        size_type size (v.size ());
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								        if (size >= BOOST_UBLAS_ITERATOR_THRESHOLD)
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								            iterating_vector_assign_scalar<F> (v, t);
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								        else
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								            indexing_vector_assign_scalar<F> (v, t);
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								#endif
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								    }
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								    // Packed (proxy) case
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								    template<template <class T1, class T2> class F, class V, class T>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void vector_assign_scalar (V &v, const T &t, packed_proxy_tag) {
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								        typedef F<typename V::iterator::reference, T> functor_type;
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								        typedef typename V::difference_type difference_type;
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								        typename V::iterator it (v.begin ());
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								        difference_type size (v.end () - it);
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								        while (-- size >= 0)
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								            functor_type::apply (*it, t), ++ it;
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								    }
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								    // Sparse (proxy) case
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								    template<template <class T1, class T2> class F, class V, class T>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void vector_assign_scalar (V &v, const T &t, sparse_proxy_tag) {
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								        typedef F<typename V::iterator::reference, T> functor_type;
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								        typename V::iterator it (v.begin ());
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								        typename V::iterator it_end (v.end ());
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								        while (it != it_end)
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								            functor_type::apply (*it, t), ++ it;
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								    }
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								    // Dispatcher
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								    template<template <class T1, class T2> class F, class V, class T>
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								    BOOST_UBLAS_INLINE
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								    void vector_assign_scalar (V &v, const T &t) {
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								        typedef typename V::storage_category storage_category;
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								        vector_assign_scalar<F> (v, t, storage_category ());
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								    }
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								    template<class SC, bool COMPUTED, class RI>
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								    struct vector_assign_traits {
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								        typedef SC storage_category;
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								    };
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								    template<bool COMPUTED>
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								    struct vector_assign_traits<dense_tag, COMPUTED, packed_random_access_iterator_tag> {
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								        typedef packed_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<dense_tag, false, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<dense_tag, true, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<bool COMPUTED>
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								    struct vector_assign_traits<dense_proxy_tag, COMPUTED, packed_random_access_iterator_tag> {
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								        typedef packed_proxy_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<dense_proxy_tag, false, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<dense_proxy_tag, true, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<packed_tag, false, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<packed_tag, true, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<bool COMPUTED>
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								    struct vector_assign_traits<packed_proxy_tag, COMPUTED, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<sparse_tag, true, dense_random_access_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<sparse_tag, true, packed_random_access_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    template<>
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								    struct vector_assign_traits<sparse_tag, true, sparse_bidirectional_iterator_tag> {
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								        typedef sparse_proxy_tag storage_category;
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								    };
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								    // Explicitly iterating
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								    template<template <class T1, class T2> class F, class V, class E>
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								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
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								    void iterating_vector_assign (V &v, const vector_expression<E> &e) {
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								        typedef F<typename V::iterator::reference, typename E::value_type> functor_type;
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								        typedef typename V::difference_type difference_type;
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								        difference_type size (BOOST_UBLAS_SAME (v.size (), e ().size ()));
							 | 
						||
| 
								 | 
							
								        typename V::iterator it (v.begin ());
							 | 
						||
| 
								 | 
							
								        BOOST_UBLAS_CHECK (v.end () - it == size, bad_size ());
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        BOOST_UBLAS_CHECK (e ().end () - ite == size, bad_size ());
							 | 
						||
| 
								 | 
							
								#ifndef BOOST_UBLAS_USE_DUFF_DEVICE
							 | 
						||
| 
								 | 
							
								        while (-- size >= 0)
							 | 
						||
| 
								 | 
							
								            functor_type::apply (*it, *ite), ++ it, ++ ite;
							 | 
						||
| 
								 | 
							
								#else
							 | 
						||
| 
								 | 
							
								        DD (size, 2, r, (functor_type::apply (*it, *ite), ++ it, ++ ite));
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								    // Explicitly indexing
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void indexing_vector_assign (V &v, const vector_expression<E> &e) {
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::reference, typename E::value_type> functor_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::size_type size_type;
							 | 
						||
| 
								 | 
							
								        size_type size (BOOST_UBLAS_SAME (v.size (), e ().size ()));
							 | 
						||
| 
								 | 
							
								#ifndef BOOST_UBLAS_USE_DUFF_DEVICE
							 | 
						||
| 
								 | 
							
								        for (size_type i = 0; i < size; ++ i)
							 | 
						||
| 
								 | 
							
								            functor_type::apply (v (i), e () (i));
							 | 
						||
| 
								 | 
							
								#else
							 | 
						||
| 
								 | 
							
								        size_type i (0);
							 | 
						||
| 
								 | 
							
								        DD (size, 2, r, (functor_type::apply (v (i), e () (i)), ++ i));
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    // Dense (proxy) case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_assign (V &v, const vector_expression<E> &e, dense_proxy_tag) {
							 | 
						||
| 
								 | 
							
								#ifdef BOOST_UBLAS_USE_INDEXING
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<F> (v, e);
							 | 
						||
| 
								 | 
							
								#elif BOOST_UBLAS_USE_ITERATING
							 | 
						||
| 
								 | 
							
								        iterating_vector_assign<F> (v, e);
							 | 
						||
| 
								 | 
							
								#else
							 | 
						||
| 
								 | 
							
								        typedef typename V::size_type size_type;
							 | 
						||
| 
								 | 
							
								        size_type size (BOOST_UBLAS_SAME (v.size (), e ().size ()));
							 | 
						||
| 
								 | 
							
								        if (size >= BOOST_UBLAS_ITERATOR_THRESHOLD)
							 | 
						||
| 
								 | 
							
								            iterating_vector_assign<F> (v, e);
							 | 
						||
| 
								 | 
							
								        else
							 | 
						||
| 
								 | 
							
								            indexing_vector_assign<F> (v, e);
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								    // Packed (proxy) case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_assign (V &v, const vector_expression<E> &e, packed_proxy_tag) {
							 | 
						||
| 
								 | 
							
								        BOOST_UBLAS_CHECK (v.size () == e ().size (), bad_size ());
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::iterator::reference, typename E::value_type> functor_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::difference_type difference_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::value_type value_type;
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        vector<value_type> cv (v.size ());
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<scalar_assign> (cv, v);
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<F> (cv, e);
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								        typename V::iterator it (v.begin ());
							 | 
						||
| 
								 | 
							
								        typename V::iterator it_end (v.end ());
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite_end (e ().end ());
							 | 
						||
| 
								 | 
							
								        difference_type it_size (it_end - it);
							 | 
						||
| 
								 | 
							
								        difference_type ite_size (ite_end - ite);
							 | 
						||
| 
								 | 
							
								        if (it_size > 0 && ite_size > 0) {
							 | 
						||
| 
								 | 
							
								            difference_type size ((std::min) (difference_type (it.index () - ite.index ()), ite_size));
							 | 
						||
| 
								 | 
							
								            if (size > 0) {
							 | 
						||
| 
								 | 
							
								                ite += size;
							 | 
						||
| 
								 | 
							
								                ite_size -= size;
							 | 
						||
| 
								 | 
							
								            }
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								        if (it_size > 0 && ite_size > 0) {
							 | 
						||
| 
								 | 
							
								            difference_type size ((std::min) (difference_type (ite.index () - it.index ()), it_size));
							 | 
						||
| 
								 | 
							
								            if (size > 0) {
							 | 
						||
| 
								 | 
							
								                it_size -= size;
							 | 
						||
| 
								 | 
							
								                if (!functor_type::computed) {
							 | 
						||
| 
								 | 
							
								                    while (-- size >= 0)    // zeroing
							 | 
						||
| 
								 | 
							
								                        functor_type::apply (*it, value_type/*zero*/()), ++ it;
							 | 
						||
| 
								 | 
							
								                } else {
							 | 
						||
| 
								 | 
							
								                    it += size;
							 | 
						||
| 
								 | 
							
								                }
							 | 
						||
| 
								 | 
							
								            }
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								        difference_type size ((std::min) (it_size, ite_size));
							 | 
						||
| 
								 | 
							
								        it_size -= size;
							 | 
						||
| 
								 | 
							
								        ite_size -= size;
							 | 
						||
| 
								 | 
							
								        while (-- size >= 0)
							 | 
						||
| 
								 | 
							
								            functor_type::apply (*it, *ite), ++ it, ++ ite;
							 | 
						||
| 
								 | 
							
								        size = it_size;
							 | 
						||
| 
								 | 
							
								        if (!functor_type::computed) {
							 | 
						||
| 
								 | 
							
								            while (-- size >= 0)    // zeroing
							 | 
						||
| 
								 | 
							
								                functor_type::apply (*it, value_type/*zero*/()), ++ it;
							 | 
						||
| 
								 | 
							
								        } else {
							 | 
						||
| 
								 | 
							
								            it += size;
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        if (! disable_type_check<bool>::value) 
							 | 
						||
| 
								 | 
							
								            BOOST_UBLAS_CHECK (detail::expression_type_check (v, cv), 
							 | 
						||
| 
								 | 
							
								                               external_logic ("external logic or bad condition of inputs"));
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								    // Sparse case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_assign (V &v, const vector_expression<E> &e, sparse_tag) {
							 | 
						||
| 
								 | 
							
								        BOOST_UBLAS_CHECK (v.size () == e ().size (), bad_size ());
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::iterator::reference, typename E::value_type> functor_type;
							 | 
						||
| 
								 | 
							
								        BOOST_STATIC_ASSERT ((!functor_type::computed));
							 | 
						||
| 
								 | 
							
								        typedef typename V::value_type value_type;
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        vector<value_type> cv (v.size ());
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<scalar_assign> (cv, v);
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<F> (cv, e);
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								        v.clear ();
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite_end (e ().end ());
							 | 
						||
| 
								 | 
							
								        while (ite != ite_end) {
							 | 
						||
| 
								 | 
							
								            value_type t (*ite);
							 | 
						||
| 
								 | 
							
								            if (t != value_type/*zero*/())
							 | 
						||
| 
								 | 
							
								                v.insert_element (ite.index (), t);
							 | 
						||
| 
								 | 
							
								            ++ ite;
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        if (! disable_type_check<bool>::value) 
							 | 
						||
| 
								 | 
							
								            BOOST_UBLAS_CHECK (detail::expression_type_check (v, cv), 
							 | 
						||
| 
								 | 
							
								                               external_logic ("external logic or bad condition of inputs"));
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								    // Sparse proxy or functional case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_assign (V &v, const vector_expression<E> &e, sparse_proxy_tag) {
							 | 
						||
| 
								 | 
							
								        BOOST_UBLAS_CHECK (v.size () == e ().size (), bad_size ());
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::iterator::reference, typename E::value_type> functor_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::size_type size_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::difference_type difference_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::value_type value_type;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        vector<value_type> cv (v.size ());
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<scalar_assign> (cv, v);
							 | 
						||
| 
								 | 
							
								        indexing_vector_assign<F> (cv, e);
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								        detail::make_conformant (v, e);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								        typename V::iterator it (v.begin ());
							 | 
						||
| 
								 | 
							
								        typename V::iterator it_end (v.end ());
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        typename E::const_iterator ite_end (e ().end ());
							 | 
						||
| 
								 | 
							
								        if (it != it_end && ite != ite_end) {
							 | 
						||
| 
								 | 
							
								            size_type it_index = it.index (), ite_index = ite.index ();
							 | 
						||
| 
								 | 
							
								            while (true) {
							 | 
						||
| 
								 | 
							
								                difference_type compare = it_index - ite_index;
							 | 
						||
| 
								 | 
							
								                if (compare == 0) {
							 | 
						||
| 
								 | 
							
								                    functor_type::apply (*it, *ite);
							 | 
						||
| 
								 | 
							
								                    ++ it, ++ ite;
							 | 
						||
| 
								 | 
							
								                    if (it != it_end && ite != ite_end) {
							 | 
						||
| 
								 | 
							
								                        it_index = it.index ();
							 | 
						||
| 
								 | 
							
								                        ite_index = ite.index ();
							 | 
						||
| 
								 | 
							
								                    } else
							 | 
						||
| 
								 | 
							
								                        break;
							 | 
						||
| 
								 | 
							
								                } else if (compare < 0) {
							 | 
						||
| 
								 | 
							
								                    if (!functor_type::computed) {
							 | 
						||
| 
								 | 
							
								                        functor_type::apply (*it, value_type/*zero*/());
							 | 
						||
| 
								 | 
							
								                        ++ it;
							 | 
						||
| 
								 | 
							
								                    } else
							 | 
						||
| 
								 | 
							
								                        increment (it, it_end, - compare);
							 | 
						||
| 
								 | 
							
								                    if (it != it_end)
							 | 
						||
| 
								 | 
							
								                        it_index = it.index ();
							 | 
						||
| 
								 | 
							
								                    else
							 | 
						||
| 
								 | 
							
								                        break;
							 | 
						||
| 
								 | 
							
								                } else if (compare > 0) {
							 | 
						||
| 
								 | 
							
								                    increment (ite, ite_end, compare);
							 | 
						||
| 
								 | 
							
								                    if (ite != ite_end)
							 | 
						||
| 
								 | 
							
								                        ite_index = ite.index ();
							 | 
						||
| 
								 | 
							
								                    else
							 | 
						||
| 
								 | 
							
								                        break;
							 | 
						||
| 
								 | 
							
								                }
							 | 
						||
| 
								 | 
							
								            }
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								        if (!functor_type::computed) {
							 | 
						||
| 
								 | 
							
								            while (it != it_end) {  // zeroing
							 | 
						||
| 
								 | 
							
								                functor_type::apply (*it, value_type/*zero*/());
							 | 
						||
| 
								 | 
							
								                ++ it;
							 | 
						||
| 
								 | 
							
								            }
							 | 
						||
| 
								 | 
							
								        } else {
							 | 
						||
| 
								 | 
							
								            it = it_end;
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        if (! disable_type_check<bool>::value)
							 | 
						||
| 
								 | 
							
								            BOOST_UBLAS_CHECK (detail::expression_type_check (v, cv), 
							 | 
						||
| 
								 | 
							
								                               external_logic ("external logic or bad condition of inputs"));
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    // Dispatcher
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    BOOST_UBLAS_INLINE
							 | 
						||
| 
								 | 
							
								    void vector_assign (V &v, const vector_expression<E> &e) {
							 | 
						||
| 
								 | 
							
								        typedef typename vector_assign_traits<typename V::storage_category,
							 | 
						||
| 
								 | 
							
								                                              F<typename V::reference, typename E::value_type>::computed,
							 | 
						||
| 
								 | 
							
								                                              typename E::const_iterator::iterator_category>::storage_category storage_category;
							 | 
						||
| 
								 | 
							
								        vector_assign<F> (v, e, storage_category ());
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    template<class SC, class RI>
							 | 
						||
| 
								 | 
							
								    struct vector_swap_traits {
							 | 
						||
| 
								 | 
							
								        typedef SC storage_category;
							 | 
						||
| 
								 | 
							
								    };
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    template<>
							 | 
						||
| 
								 | 
							
								    struct vector_swap_traits<dense_proxy_tag, sparse_bidirectional_iterator_tag> {
							 | 
						||
| 
								 | 
							
								        typedef sparse_proxy_tag storage_category;
							 | 
						||
| 
								 | 
							
								    };
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    template<>
							 | 
						||
| 
								 | 
							
								    struct vector_swap_traits<packed_proxy_tag, sparse_bidirectional_iterator_tag> {
							 | 
						||
| 
								 | 
							
								        typedef sparse_proxy_tag storage_category;
							 | 
						||
| 
								 | 
							
								    };
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    // Dense (proxy) case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_swap (V &v, vector_expression<E> &e, dense_proxy_tag) {
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::iterator::reference, typename E::iterator::reference> functor_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::difference_type difference_type;
							 | 
						||
| 
								 | 
							
								        difference_type size (BOOST_UBLAS_SAME (v.size (), e ().size ()));
							 | 
						||
| 
								 | 
							
								        typename V::iterator it (v.begin ());
							 | 
						||
| 
								 | 
							
								        typename E::iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        while (-- size >= 0)
							 | 
						||
| 
								 | 
							
								            functor_type::apply (*it, *ite), ++ it, ++ ite;
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								    // Packed (proxy) case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_swap (V &v, vector_expression<E> &e, packed_proxy_tag) {
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::iterator::reference, typename E::iterator::reference> functor_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::difference_type difference_type;
							 | 
						||
| 
								 | 
							
								        typename V::iterator it (v.begin ());
							 | 
						||
| 
								 | 
							
								        typename V::iterator it_end (v.end ());
							 | 
						||
| 
								 | 
							
								        typename E::iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        typename E::iterator ite_end (e ().end ());
							 | 
						||
| 
								 | 
							
								        difference_type it_size (it_end - it);
							 | 
						||
| 
								 | 
							
								        difference_type ite_size (ite_end - ite);
							 | 
						||
| 
								 | 
							
								        if (it_size > 0 && ite_size > 0) {
							 | 
						||
| 
								 | 
							
								            difference_type size ((std::min) (difference_type (it.index () - ite.index ()), ite_size));
							 | 
						||
| 
								 | 
							
								            if (size > 0) {
							 | 
						||
| 
								 | 
							
								                ite += size;
							 | 
						||
| 
								 | 
							
								                ite_size -= size;
							 | 
						||
| 
								 | 
							
								            }
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								        if (it_size > 0 && ite_size > 0) {
							 | 
						||
| 
								 | 
							
								            difference_type size ((std::min) (difference_type (ite.index () - it.index ()), it_size));
							 | 
						||
| 
								 | 
							
								            if (size > 0)
							 | 
						||
| 
								 | 
							
								                it_size -= size;
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								        difference_type size ((std::min) (it_size, ite_size));
							 | 
						||
| 
								 | 
							
								        it_size -= size;
							 | 
						||
| 
								 | 
							
								        ite_size -= size;
							 | 
						||
| 
								 | 
							
								        while (-- size >= 0)
							 | 
						||
| 
								 | 
							
								            functor_type::apply (*it, *ite), ++ it, ++ ite;
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								    // Sparse proxy case
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    // BOOST_UBLAS_INLINE This function seems to be big. So we do not let the compiler inline it.
							 | 
						||
| 
								 | 
							
								    void vector_swap (V &v, vector_expression<E> &e, sparse_proxy_tag) {
							 | 
						||
| 
								 | 
							
								        BOOST_UBLAS_CHECK (v.size () == e ().size (), bad_size ());
							 | 
						||
| 
								 | 
							
								        typedef F<typename V::iterator::reference, typename E::iterator::reference> functor_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::size_type size_type;
							 | 
						||
| 
								 | 
							
								        typedef typename V::difference_type difference_type;
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								        detail::make_conformant (v, e);
							 | 
						||
| 
								 | 
							
								        // FIXME should be a seperate restriction for E
							 | 
						||
| 
								 | 
							
								        detail::make_conformant (e (), v);
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								        typename V::iterator it (v.begin ());
							 | 
						||
| 
								 | 
							
								        typename V::iterator it_end (v.end ());
							 | 
						||
| 
								 | 
							
								        typename E::iterator ite (e ().begin ());
							 | 
						||
| 
								 | 
							
								        typename E::iterator ite_end (e ().end ());
							 | 
						||
| 
								 | 
							
								        if (it != it_end && ite != ite_end) {
							 | 
						||
| 
								 | 
							
								            size_type it_index = it.index (), ite_index = ite.index ();
							 | 
						||
| 
								 | 
							
								            while (true) {
							 | 
						||
| 
								 | 
							
								                difference_type compare = it_index - ite_index;
							 | 
						||
| 
								 | 
							
								                if (compare == 0) {
							 | 
						||
| 
								 | 
							
								                    functor_type::apply (*it, *ite);
							 | 
						||
| 
								 | 
							
								                    ++ it, ++ ite;
							 | 
						||
| 
								 | 
							
								                    if (it != it_end && ite != ite_end) {
							 | 
						||
| 
								 | 
							
								                        it_index = it.index ();
							 | 
						||
| 
								 | 
							
								                        ite_index = ite.index ();
							 | 
						||
| 
								 | 
							
								                    } else
							 | 
						||
| 
								 | 
							
								                        break;
							 | 
						||
| 
								 | 
							
								                } else if (compare < 0) {
							 | 
						||
| 
								 | 
							
								                    increment (it, it_end, - compare);
							 | 
						||
| 
								 | 
							
								                    if (it != it_end)
							 | 
						||
| 
								 | 
							
								                        it_index = it.index ();
							 | 
						||
| 
								 | 
							
								                    else
							 | 
						||
| 
								 | 
							
								                        break;
							 | 
						||
| 
								 | 
							
								                } else if (compare > 0) {
							 | 
						||
| 
								 | 
							
								                    increment (ite, ite_end, compare);
							 | 
						||
| 
								 | 
							
								                    if (ite != ite_end)
							 | 
						||
| 
								 | 
							
								                        ite_index = ite.index ();
							 | 
						||
| 
								 | 
							
								                    else
							 | 
						||
| 
								 | 
							
								                        break;
							 | 
						||
| 
								 | 
							
								                }
							 | 
						||
| 
								 | 
							
								            }
							 | 
						||
| 
								 | 
							
								        }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#if BOOST_UBLAS_TYPE_CHECK
							 | 
						||
| 
								 | 
							
								        increment (ite, ite_end);
							 | 
						||
| 
								 | 
							
								        increment (it, it_end);
							 | 
						||
| 
								 | 
							
								#endif
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								    // Dispatcher
							 | 
						||
| 
								 | 
							
								    template<template <class T1, class T2> class F, class V, class E>
							 | 
						||
| 
								 | 
							
								    BOOST_UBLAS_INLINE
							 | 
						||
| 
								 | 
							
								    void vector_swap (V &v, vector_expression<E> &e) {
							 | 
						||
| 
								 | 
							
								        typedef typename vector_swap_traits<typename V::storage_category,
							 | 
						||
| 
								 | 
							
								                                            typename E::const_iterator::iterator_category>::storage_category storage_category;
							 | 
						||
| 
								 | 
							
								        vector_swap<F> (v, e, storage_category ());
							 | 
						||
| 
								 | 
							
								    }
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								}}}
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								#endif
							 |