1282 lines
36 KiB
Plaintext
1282 lines
36 KiB
Plaintext
//
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// Copyright (c) 2010 Athanasios Iliopoulos
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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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#ifndef ASSIGNMENT_HPP
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#define ASSIGNMENT_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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/*! \file assignment.hpp
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\brief uBlas assignment operator <<=.
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*/
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namespace boost { namespace numeric { namespace ublas {
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/** \brief A CRTP and Barton-Nackman trick index manipulator wrapper class.
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*
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* This class is not meant to be used directly.
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*/
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template <class TV>
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class index_manipulator {
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public:
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typedef TV type;
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BOOST_UBLAS_INLINE
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const type &operator () () const {
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return *static_cast<const type *> (this);
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}
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BOOST_UBLAS_INLINE
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type &operator () () {
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return *static_cast<type *> (this);
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}
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};
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/** \brief A move_to vector index manipulator.
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*
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* When member function \c manip is called the referenced
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* index will be set to the manipulators' index.
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*
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* \sa move_to(T i)
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*/
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template <typename T>
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class vector_move_to_manip: public index_manipulator<vector_move_to_manip<T> > {
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public:
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BOOST_UBLAS_INLINE
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vector_move_to_manip(const T &k): i(k) { }
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template <typename V>
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BOOST_UBLAS_INLINE
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void manip(V &k) const { k=i; }
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private:
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T i;
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};
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/** \brief An object generator that returns a move_to vector index manipulator
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*
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* \param i The element number the manipulator will move to when \c manip member function is called
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* \return A move_to vector manipulator
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*
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* Example usage:
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* \code
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* vector<double> a(6, 0);
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* a <<= 1, 2, move_to(5), 3;
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* \endcode
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* will result in:
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* \code
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* 1 2 0 0 0 3
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* \endcode
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*
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* \tparam T Size type
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* \sa move_to()
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*/
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template <typename T>
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BOOST_UBLAS_INLINE vector_move_to_manip<T> move_to(T i) {
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return vector_move_to_manip<T>(i);
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}
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/** \brief A static move to vector manipulator.
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*
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* When member function \c manip is called the referenced
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* index will be set to the manipulators' index
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*
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* \sa move_to(T i) and move_to()
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*/
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template <std::size_t I>
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class static_vector_move_to_manip: public index_manipulator<static_vector_move_to_manip<I> > {
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public:
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template <typename V>
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BOOST_UBLAS_INLINE
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void manip(V &k) const { k=I; }
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};
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/** \brief An object generator that returns a static move_to vector index manipulator.
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*
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* Typically faster than the dynamic version, but can be used only when the
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* values are known at compile time.
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*
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* \return A static move_to vector manipulator
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*
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* Example usage:
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* \code
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* vector<double> a(6, 0);
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* a <<= 1, 2, move_to<5>(), 3;
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* \endcode
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* will result in:
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* \code
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* 1 2 0 0 0 3
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* \endcode
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*
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* \tparam I The number of elements the manipulator will traverse the index when \c manip function is called
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*/
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template <std::size_t I>
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BOOST_UBLAS_INLINE static_vector_move_to_manip<I> move_to() {
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return static_vector_move_to_manip<I>();
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}
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/** \brief A move vector index manipulator.
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*
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* When member function traverse is called the manipulators'
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* index will be added to the referenced index.
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*
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* \see move(T i)
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*/
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template <typename T>
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class vector_move_manip: public index_manipulator<vector_move_manip<T> > {
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public:
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BOOST_UBLAS_INLINE
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vector_move_manip(const T &k): i(k) { }
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template <typename V>
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BOOST_UBLAS_INLINE void manip(V &k) const { k+=i; }
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private:
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T i;
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};
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/**
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* \brief An object generator that returns a move vector index manipulator
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*
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* \tparam T Size type
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* \param i The number of elements the manipulator will traverse the index when \c manip
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* member function is called. Negative values can be used.
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* \return A move vector manipulator
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*
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* Example usage:
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* \code
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* vector<double> a(6, 0);
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* a <<= 1, 2, move(3), 3;
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* \endcode
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* will result in:
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* \code
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* 1 2 0 0 0 3
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* \endcode
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*
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*/
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template <typename T>
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BOOST_UBLAS_INLINE vector_move_manip<T> move(T i) {
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return vector_move_manip<T>(i);
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}
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/**
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* \brief A static move vector manipulator
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*
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* When member function \c manip is called the manipulators
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* index will be added to the referenced index
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*
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* \sa move()
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <std::ptrdiff_t I>
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class static_vector_move_manip: public index_manipulator<static_vector_move_manip<I> > {
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public:
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template <typename V>
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BOOST_UBLAS_INLINE void manip(V &k) const { k+=I; }
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};
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/**
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* \brief An object generator that returns a static move vector index manipulator.
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*
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* Typically faster than the dynamic version, but can be used only when the
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* values are known at compile time.
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* \tparam I The Number of elements the manipulator will traverse the index when \c manip
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* function is called.Negative values can be used.
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* \return A static move vector manipulator
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*
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* Example usage:
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* \code
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* vector<double> a(6, 0);
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* a <<= 1, 2, move<3>(), 3;
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* \endcode
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* will result in:
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* \code
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* 1 2 0 0 0 3
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* \endcode
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <std::ptrdiff_t I>
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static_vector_move_manip<I> move() {
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return static_vector_move_manip<I>();
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}
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/**
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* \brief A move_to matrix manipulator
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*
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* When member function \c manip is called the referenced
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* index will be set to the manipulators' index
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*
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* \sa move_to(T i, T j)
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <typename T>
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class matrix_move_to_manip: public index_manipulator<matrix_move_to_manip<T> > {
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public:
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BOOST_UBLAS_INLINE
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matrix_move_to_manip(T k, T l): i(k), j(l) { }
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template <typename V1, typename V2>
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BOOST_UBLAS_INLINE
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void manip(V1 &k, V2 &l) const {
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k=i;
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l=j;
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}
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private:
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T i, j;
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};
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/**
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* \brief An object generator that returns a "move_to" matrix index manipulator
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*
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* \tparam size type
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* \param i The row number the manipulator will move to when \c manip
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* member function is called
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* \param j The column number the manipulator will move to when \c manip
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* member function is called
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* \return A move matrix manipulator
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*
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* Example usage:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, move_to(A.size1()-1, A.size1()-1), 3;
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* \endcode
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* will result in:
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* \code
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* 1 2 0
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* 0 0 0
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* 0 0 3
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* \endcode
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* \sa move_to(T i, T j) and static_matrix_move_to_manip
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <typename T>
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BOOST_UBLAS_INLINE matrix_move_to_manip<T> move_to(T i, T j) {
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return matrix_move_to_manip<T>(i, j);
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}
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/**
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* \brief A static move_to matrix manipulator
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* When member function traverse is called the referenced
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* index will be set to the manipulators' index
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*
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* \sa move_to()
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <std::size_t I,std::size_t J>
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class static_matrix_move_to_manip: public index_manipulator<static_matrix_move_to_manip<I, J> > {
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public:
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template <typename V, typename K>
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BOOST_UBLAS_INLINE
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void manip(V &k, K &l) const {
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k=I;
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l=J;
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}
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};
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/**
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* \brief An object generator that returns a static move_to matrix index manipulator.
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*
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* Typically faster than the dynamic version, but can be used only when the
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* values are known at compile time.
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* \tparam I The row number the manipulator will set the matrix assigner index to.
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* \tparam J The column number the manipulator will set the matrix assigner index to.
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* \return A static move_to matrix manipulator
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*
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* Example usage:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, move_to<2,2>, 3;
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* \endcode
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* will result in:
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* \code
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* 1 2 0
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* 0 0 0
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* 0 0 3
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* \endcode
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* \sa move_to(T i, T j) and static_matrix_move_to_manip
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*/
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template <std::size_t I, std::size_t J>
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BOOST_UBLAS_INLINE static_matrix_move_to_manip<I, J> move_to() {
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return static_matrix_move_to_manip<I, J>();
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}
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/**
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* \brief A move matrix index manipulator.
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*
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* When member function \c manip is called the manipulator's
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* index will be added to the referenced' index.
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*
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* \sa move(T i, T j)
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*/
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template <typename T>
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class matrix_move_manip: public index_manipulator<matrix_move_manip<T> > {
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public:
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BOOST_UBLAS_INLINE
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matrix_move_manip(T k, T l): i(k), j(l) { }
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template <typename V, typename K>
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BOOST_UBLAS_INLINE
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void manip(V &k, K &l) const {
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k+=i;
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l+=j;
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}
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private:
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T i, j;
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};
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/**
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* \brief An object generator that returns a move matrix index manipulator
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*
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* \tparam size type
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* \param i The number of rows the manipulator will traverse the index when "manip"
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* member function is called
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* \param j The number of columns the manipulator will traverse the index when "manip"
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* member function is called
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* \return A move matrix manipulator
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*
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* Example:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, move(1,0),
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* 3,;
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* \endcode
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* will result in:
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* \code
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* 1 2 0
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* 0 0 3
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* 0 0 0
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* \endcode
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*/
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template <typename T>
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BOOST_UBLAS_INLINE matrix_move_manip<T> move(T i, T j) {
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return matrix_move_manip<T>(i, j);
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}
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/**
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* \brief A static move matrix index manipulator.
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*
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* When member function traverse is called the manipulator's
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* index will be added to the referenced' index.
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*
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* \sa move()
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <std::ptrdiff_t I, std::ptrdiff_t J>
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class static_matrix_move_manip: public index_manipulator<static_matrix_move_manip<I, J> > {
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public:
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template <typename V, typename K>
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BOOST_UBLAS_INLINE
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void manip(V &k, K &l) const {
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k+=I;
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l+=J;
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}
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};
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/**
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* \brief An object generator that returns a static "move" matrix index manipulator.
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*
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* Typically faster than the dynamic version, but can be used only when the
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* values are known at compile time. Negative values can be used.
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* \tparam I The number of rows the manipulator will trasverse the matrix assigner index.
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* \tparam J The number of columns the manipulator will trasverse the matrix assigner index.
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* \tparam size type
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* \return A static move matrix manipulator
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*
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* Example:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, move<1,0>(),
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* 3,;
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* \endcode
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* will result in:
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* \code
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* 1 2 0
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* 0 0 3
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* 0 0 0
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* \endcode
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*
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* \sa move_to()
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*
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* \todo Doxygen has some problems with similar template functions. Correct that.
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*/
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template <std::ptrdiff_t I, std::ptrdiff_t J>
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BOOST_UBLAS_INLINE static_matrix_move_manip<I, J> move() {
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return static_matrix_move_manip<I, J>();
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}
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/**
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* \brief A begining of row manipulator
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*
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* When member function \c manip is called the referenced
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* index will be be set to the begining of the row (i.e. column = 0)
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*
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* \sa begin1()
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*/
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class begin1_manip: public index_manipulator<begin1_manip > {
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public:
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template <typename V, typename K>
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BOOST_UBLAS_INLINE
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void manip(V & k, K &/*l*/) const {
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k=0;
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}
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};
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/**
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* \brief An object generator that returns a begin1 manipulator.
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*
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* The resulted manipulator will traverse the index to the begining
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* of the current column when its' \c manip member function is called.
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*
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* \return A begin1 matrix index manipulator
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*
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* Example usage:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, next_row(),
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* 3, 4, begin1(), 1;
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* \endcode
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* will result in:
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* \code
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* 1 2 1
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* 3 4 0
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* 0 0 0
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* \endcode
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* \sa begin2()
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*/
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inline begin1_manip begin1() {
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return begin1_manip();
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}
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/**
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* \brief A begining of column manipulator
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*
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* When member function \c manip is called the referenced
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* index will be be set to the begining of the column (i.e. row = 0).
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*
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*
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* \sa begin2()
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*/
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class begin2_manip: public index_manipulator<begin2_manip > {
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public:
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template <typename V, typename K>
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BOOST_UBLAS_INLINE
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void manip(V &/*k*/, K &l) const {
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l=0;
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}
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};
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/**
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* \brief An object generator that returns a begin2 manipulator to be used to traverse a matrix.
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*
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* The resulted manipulator will traverse the index to the begining
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* of the current row when its' \c manip member function is called.
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*
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* \return A begin2 matrix manipulator
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*
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* Example:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, move<1,0>(),
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* 3, begin2(), 1;
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* \endcode
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* will result in:
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* \code
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* 1 2 0
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* 1 0 3
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* 0 0 0
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* \endcode
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* \sa begin1() begin2_manip
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*/
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inline begin2_manip begin2() {
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return begin2_manip();
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}
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/**
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* \brief A next row matrix manipulator.
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*
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* When member function traverse is called the referenced
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* index will be traveresed to the begining of next row.
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*
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* \sa next_row()
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*/
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class next_row_manip: public index_manipulator<next_row_manip> {
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public:
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template <typename V, typename K>
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BOOST_UBLAS_INLINE
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void manip(V &k, K &l) const {
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k++;
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l=0;
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}
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};
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/**
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* \brief An object generator that returns a next_row manipulator.
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*
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* The resulted manipulator will traverse the index to the begining
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* of the next row when it's manip member function is called.
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*
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* \return A next_row matrix manipulator.
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*
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* Example:
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* \code:
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* matrix<double> A(3, 3, 0);
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* A <<= 1, 2, next_row(),
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* 3, 4;
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* \endcode
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* will result in:
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* \code
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* 1 2 0
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* 3 4 0
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* 0 0 0
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* \endcode
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* \sa next_column()
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*/
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inline next_row_manip next_row() {
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return next_row_manip();
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}
|
|
|
|
/**
|
|
* \brief A next column matrix manipulator.
|
|
*
|
|
* When member function traverse is called the referenced
|
|
* index will be traveresed to the begining of next column.
|
|
*
|
|
* \sa next_column()
|
|
*/
|
|
class next_column_manip: public index_manipulator<next_column_manip> {
|
|
public:
|
|
template <typename V, typename K>
|
|
BOOST_UBLAS_INLINE
|
|
void manip(V &k, K &l) const {
|
|
k=0;
|
|
l++;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief An object generator that returns a next_row manipulator.
|
|
*
|
|
* The resulted manipulator will traverse the index to the begining
|
|
* of the next column when it's manip member function is called.
|
|
*
|
|
* \return A next_column matrix manipulator.
|
|
*
|
|
* Example:
|
|
* \code:
|
|
* matrix<double> A(3, 3, 0);
|
|
* A <<= 1, 2, 0,
|
|
* 3, next_column(), 4;
|
|
* \endcode
|
|
* will result in:
|
|
* \code
|
|
* 1 2 4
|
|
* 3 0 0
|
|
* 0 0 0
|
|
* \endcode
|
|
*
|
|
*/
|
|
inline next_column_manip next_column() {
|
|
return next_column_manip();
|
|
}
|
|
|
|
/**
|
|
* \brief A wrapper for fill policy classes
|
|
*
|
|
*/
|
|
template <class T>
|
|
class fill_policy_wrapper {
|
|
public:
|
|
typedef T type;
|
|
};
|
|
|
|
// Collection of the fill policies
|
|
namespace fill_policy {
|
|
|
|
/**
|
|
* \brief An index assign policy
|
|
*
|
|
* This policy is used to for the simplified ublas assign through
|
|
* normal indexing.
|
|
*
|
|
*
|
|
*/
|
|
class index_assign :public fill_policy_wrapper<index_assign> {
|
|
public:
|
|
template <class T, typename S, typename V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const V &v) {
|
|
e()(i) = v;
|
|
}
|
|
template <class T, typename S, typename V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const S &j, const V &v) {
|
|
e()(i, j) = v;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief An index plus assign policy
|
|
*
|
|
* This policy is used when the assignment is desired to be followed
|
|
* by an addition.
|
|
*
|
|
*
|
|
*/
|
|
class index_plus_assign :public fill_policy_wrapper<index_plus_assign> {
|
|
public:
|
|
template <class T, typename S, typename V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const V &v) {
|
|
e()(i) += v;
|
|
}
|
|
template <class T, typename S, typename V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const S &j, const V &v) {
|
|
e()(i, j) += v;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief An index minus assign policy
|
|
*
|
|
* This policy is used when the assignment is desired to be followed
|
|
* by a substraction.
|
|
*
|
|
*
|
|
*/
|
|
class index_minus_assign :public fill_policy_wrapper<index_minus_assign> {
|
|
public:
|
|
template <class T, typename S, typename V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const V &v) {
|
|
e()(i) -= v;
|
|
}
|
|
template <class T, typename S, typename V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const S &j, const V &v) {
|
|
e()(i, j) -= v;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief The sparse push_back fill policy.
|
|
*
|
|
* This policy is adequate for sparse types, when fast filling is required, where indexing
|
|
* assign is pretty slow.
|
|
|
|
* It is important to note that push_back assign cannot be used to add elements before elements
|
|
* already existing in a sparse container. To achieve that please use the sparse_insert fill policy.
|
|
*/
|
|
class sparse_push_back :public fill_policy_wrapper<sparse_push_back > {
|
|
public:
|
|
template <class T, class S, class V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const V &v) {
|
|
e().push_back(i, v);
|
|
}
|
|
template <class T, class S, class V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const S &j, const V &v) {
|
|
e().push_back(i,j, v);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief The sparse insert fill policy.
|
|
*
|
|
* This policy is adequate for sparse types, when fast filling is required, where indexing
|
|
* assign is pretty slow. It is slower than sparse_push_back fill policy, but it can be used to
|
|
* insert elements anywhere inside the container.
|
|
*/
|
|
class sparse_insert :public fill_policy_wrapper<sparse_insert> {
|
|
public:
|
|
template <class T, class S, class V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const V &v) {
|
|
e().insert_element(i, v);
|
|
}
|
|
template <class T, class S, class V>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply(T &e, const S &i, const S &j, const V &v) {
|
|
e().insert_element(i,j, v);
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
/** \brief A wrapper for traverse policy classes
|
|
*
|
|
*/
|
|
template <class T>
|
|
class traverse_policy_wrapper {
|
|
public:
|
|
typedef T type;
|
|
};
|
|
|
|
// Collection of the traverse policies
|
|
namespace traverse_policy {
|
|
|
|
|
|
/**
|
|
* \brief The no wrap policy.
|
|
*
|
|
* The no wrap policy does not allow wrapping when assigning to a matrix
|
|
*/
|
|
struct no_wrap {
|
|
/**
|
|
* \brief Element wrap method
|
|
*/
|
|
template <class S1, class S2, class S3>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply1(const S1 &/*s*/, S2 &/*i*/, S3 &/*j*/) {
|
|
}
|
|
|
|
/**
|
|
* \brief Matrix block wrap method
|
|
*/
|
|
template <class S1, class S2, class S3>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply2(const S1 &/*s1*/, const S1 &/*s2*/, S2 &/*i1*/, S3 &/*i2*/) {
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief The wrap policy.
|
|
*
|
|
* The wrap policy enables element wrapping when assigning to a matrix
|
|
*/
|
|
struct wrap {
|
|
/**
|
|
* \brief Element wrap method
|
|
*/
|
|
template <class S1, class S2, class S3>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply1(const S1 &s, S2 &i1, S3 &i2) {
|
|
if (i2>=s) {
|
|
i1++;
|
|
i2=0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* \brief Matrix block wrap method
|
|
*/
|
|
template <class S1, class S2, class S3>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply2(const S1 &s1, const S1 &s2, S2 &i1, S3 &i2) {
|
|
if (i2>=s2) i2=0; // Wrap to the next block
|
|
else i1-=s1; // Move up (or right) one block
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief The row_by_row traverse policy
|
|
*
|
|
* This policy is used when the assignment is desired to happen
|
|
* row_major wise for performance or other reasons.
|
|
*
|
|
* This is the default behaviour. To change it globally please define BOOST_UBLAS_DEFAULT_ASSIGN_BY_COLUMN
|
|
* in the compilation options or in an adequate header file.
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class Wrap = wrap>
|
|
class by_row_policy :public traverse_policy_wrapper<by_row_policy<Wrap> > {
|
|
public:
|
|
template <typename S1, typename S2>
|
|
BOOST_UBLAS_INLINE
|
|
static void advance(S1 &/*i*/, S2 &j) { j++;}
|
|
|
|
template <class E1, class E2, typename S1, typename S2, typename S3, typename S4, typename S5>
|
|
BOOST_UBLAS_INLINE
|
|
static bool next(const E1 &e, const E2 &me, S1 &i, S2 &j, const S3 &/*i0*/, const S3 &j0, S4 &k, S5 &l) {
|
|
l++; j++;
|
|
if (l>=e().size2()) {
|
|
l=0; k++; j=j0; i++;
|
|
// It is assumed that the iteration starts from 0 and progresses only using this function from within
|
|
// an assigner object.
|
|
// Otherwise (i.e. if it is called outside the assigner object) apply2 should have been
|
|
// outside the if statement.
|
|
if (k>=e().size1()) {
|
|
j=j0+e().size2();
|
|
Wrap::apply2(e().size1(), me().size2(), i, j);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
template <class E, typename S1, typename S2>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply_wrap(const E& e, S1 &i, S2 &j) {
|
|
Wrap::apply1(e().size2(), i, j);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* \brief The column_by_column traverse policy
|
|
*
|
|
* This policy is used when the assignment is desired to happen
|
|
* column_major wise, for performance or other reasons.
|
|
*
|
|
* This is the NOT the default behaviour. To set this as the default define BOOST_UBLAS_DEFAULT_ASSIGN_BY_COLUMN
|
|
* in the compilation options or in an adequate header file.
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class Wrap = wrap>
|
|
class by_column_policy :public traverse_policy_wrapper<by_column_policy<Wrap> > {
|
|
public:
|
|
template <typename S1, typename S2>
|
|
BOOST_UBLAS_INLINE
|
|
static void advance(S1 &i, S2 &/*j*/) { i++;}
|
|
|
|
template <class E1, class E2, typename S1, typename S2, typename S3, typename S4, typename S5>
|
|
BOOST_UBLAS_INLINE
|
|
static bool next(const E1 &e, const E2 &me, S1 &i, S2 &j, const S3 &i0, const S3 &/*j0*/, S4 &k, S5 &l) {
|
|
k++; i++;
|
|
if (k>=e().size1()) {
|
|
k=0; l++; i=i0; j++;
|
|
// It is assumed that the iteration starts from 0 and progresses only using this function from within
|
|
// an assigner object.
|
|
// Otherwise (i.e. if it is called outside the assigner object) apply2 should have been
|
|
// outside the if statement.
|
|
if (l>=e().size2()) {
|
|
i=i0+e().size1();
|
|
Wrap::apply2(e().size2(), me().size1(), j, i);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
template <class E, typename S1, typename S2>
|
|
BOOST_UBLAS_INLINE
|
|
static void apply_wrap(const E& e, S1 &i, S2 &j) {
|
|
Wrap::apply1(e().size1(), j, i);
|
|
}
|
|
};
|
|
}
|
|
#ifndef BOOST_UBLAS_DEFAULT_NO_WRAP_POLICY
|
|
typedef traverse_policy::wrap DEFAULT_WRAP_POLICY;
|
|
#else
|
|
typedef traverse_policy::no_wrap DEFAULT_WRAP_POLICY;
|
|
#endif
|
|
|
|
#ifndef BOOST_UBLAS_DEFAULT_ASSIGN_BY_COLUMN
|
|
typedef traverse_policy::by_row_policy<DEFAULT_WRAP_POLICY> DEFAULT_TRAVERSE_POLICY;
|
|
#else
|
|
typedef traverse_policy::by_column<DEFAULT_WRAP_POLICY> DEFAULT_TRAVERSE_POLICY;
|
|
#endif
|
|
|
|
// Traverse policy namespace
|
|
namespace traverse_policy {
|
|
|
|
inline by_row_policy<DEFAULT_WRAP_POLICY> by_row() {
|
|
return by_row_policy<DEFAULT_WRAP_POLICY>();
|
|
}
|
|
|
|
inline by_row_policy<wrap> by_row_wrap() {
|
|
return by_row_policy<wrap>();
|
|
}
|
|
|
|
inline by_row_policy<no_wrap> by_row_no_wrap() {
|
|
return by_row_policy<no_wrap>();
|
|
}
|
|
|
|
inline by_column_policy<DEFAULT_WRAP_POLICY> by_column() {
|
|
return by_column_policy<DEFAULT_WRAP_POLICY>();
|
|
}
|
|
|
|
inline by_column_policy<wrap> by_column_wrap() {
|
|
return by_column_policy<wrap>();
|
|
}
|
|
|
|
inline by_column_policy<no_wrap> by_column_no_wrap() {
|
|
return by_column_policy<no_wrap>();
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* \brief An assigner object used to fill a vector using operator <<= and operator, (comma)
|
|
*
|
|
* This object is meant to be created by appropriate object generators.
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E, class Fill_Policy = fill_policy::index_assign>
|
|
class vector_expression_assigner {
|
|
public:
|
|
typedef typename E::expression_type::value_type value_type;
|
|
typedef typename E::expression_type::size_type size_type;
|
|
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner(E &e):ve(e), i(0) {
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner(size_type k, E &e):ve(e), i(k) {
|
|
// Overloaded like that so it can be differentiated from (E, val).
|
|
// Otherwise there would be an ambiquity when value_type == size_type.
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner(E &e, value_type val):ve(e), i(0) {
|
|
operator,(val);
|
|
}
|
|
|
|
template <class AE>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner(E &e, const vector_expression<AE> &nve):ve(e), i(0) {
|
|
operator,(nve);
|
|
}
|
|
|
|
template <typename T>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner(E &e, const index_manipulator<T> &ta):ve(e), i(0) {
|
|
operator,(ta);
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner &operator, (const value_type& val) {
|
|
apply(val);
|
|
return *this;
|
|
}
|
|
|
|
template <class AE>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner &operator, (const vector_expression<AE> &nve) {
|
|
for (typename AE::size_type k = 0; k!= nve().size(); k++)
|
|
operator,(nve()(k));
|
|
return *this;
|
|
}
|
|
|
|
template <typename T>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner &operator, (const index_manipulator<T> &ta) {
|
|
ta().manip(i);
|
|
return *this;
|
|
}
|
|
|
|
template <class T>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner<E, T> operator, (fill_policy_wrapper<T>) const {
|
|
return vector_expression_assigner<E, T>(i, ve);
|
|
}
|
|
|
|
private:
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner &apply(const typename E::expression_type::value_type& val) {
|
|
Fill_Policy::apply(ve, i++, val);
|
|
return *this;
|
|
}
|
|
|
|
private:
|
|
E &ve;
|
|
size_type i;
|
|
};
|
|
|
|
/*
|
|
// The following static assigner is about 30% slower than the dynamic one, probably due to the recursive creation of assigner objects.
|
|
// It remains commented here for future reference.
|
|
|
|
template <class E, std::size_t I=0>
|
|
class static_vector_expression_assigner {
|
|
public:
|
|
typedef typename E::expression_type::value_type value_type;
|
|
typedef typename E::expression_type::size_type size_type;
|
|
|
|
BOOST_UBLAS_INLINE
|
|
static_vector_expression_assigner(E &e):ve(e) {
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
static_vector_expression_assigner(E &e, value_type val):ve(e) {
|
|
operator,(val);
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
static_vector_expression_assigner<E, I+1> operator, (const value_type& val) {
|
|
return apply(val);
|
|
}
|
|
|
|
private:
|
|
BOOST_UBLAS_INLINE
|
|
static_vector_expression_assigner<E, I+1> apply(const typename E::expression_type::value_type& val) {
|
|
ve()(I)=val;
|
|
return static_vector_expression_assigner<E, I+1>(ve);
|
|
}
|
|
|
|
private:
|
|
E &ve;
|
|
};
|
|
|
|
template <class E>
|
|
BOOST_UBLAS_INLINE
|
|
static_vector_expression_assigner<vector_expression<E>, 1 > test_static(vector_expression<E> &v, const typename E::value_type &val) {
|
|
v()(0)=val;
|
|
return static_vector_expression_assigner<vector_expression<E>, 1 >(v);
|
|
}
|
|
*/
|
|
|
|
|
|
/**
|
|
* \brief A vector_expression_assigner generator used with operator<<= for simple types
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner<vector_expression<E> > operator<<=(vector_expression<E> &v, const typename E::value_type &val) {
|
|
return vector_expression_assigner<vector_expression<E> >(v,val);
|
|
}
|
|
|
|
/**
|
|
* \brief ! A vector_expression_assigner generator used with operator<<= for vector expressions
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E1, class E2>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner<vector_expression<E1> > operator<<=(vector_expression<E1> &v, const vector_expression<E2> &ve) {
|
|
return vector_expression_assigner<vector_expression<E1> >(v,ve);
|
|
}
|
|
|
|
/**
|
|
* \brief A vector_expression_assigner generator used with operator<<= for traverse manipulators
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E, typename T>
|
|
BOOST_UBLAS_INLINE
|
|
vector_expression_assigner<vector_expression<E> > operator<<=(vector_expression<E> &v, const index_manipulator<T> &nv) {
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return vector_expression_assigner<vector_expression<E> >(v,nv);
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}
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|
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|
/**
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|
* \brief A vector_expression_assigner generator used with operator<<= for choice of fill policy
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|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
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|
*/
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|
template <class E, typename T>
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|
BOOST_UBLAS_INLINE
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|
vector_expression_assigner<vector_expression<E>, T> operator<<=(vector_expression<E> &v, fill_policy_wrapper<T>) {
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|
return vector_expression_assigner<vector_expression<E>, T>(v);
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|
}
|
|
|
|
/**
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|
* \brief An assigner object used to fill a vector using operator <<= and operator, (comma)
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|
*
|
|
* This object is meant to be created by appropriate object generators.
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
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|
template <class E, class Fill_Policy = fill_policy::index_assign, class Traverse_Policy = DEFAULT_TRAVERSE_POLICY >
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|
class matrix_expression_assigner {
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|
public:
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|
typedef typename E::expression_type::size_type size_type;
|
|
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner(E &e): me(e), i(0), j(0) {
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner(E &e, size_type k, size_type l): me(e), i(k), j(l) {
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner(E &e, typename E::expression_type::value_type val): me(e), i(0), j(0) {
|
|
operator,(val);
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|
}
|
|
|
|
template <class AE>
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|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner(E &e, const vector_expression<AE> &nve):me(e), i(0), j(0) {
|
|
operator,(nve);
|
|
}
|
|
|
|
template <class AE>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner(E &e, const matrix_expression<AE> &nme):me(e), i(0), j(0) {
|
|
operator,(nme);
|
|
}
|
|
|
|
template <typename T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner(E &e, const index_manipulator<T> &ta):me(e), i(0), j(0) {
|
|
operator,(ta);
|
|
}
|
|
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner &operator, (const typename E::expression_type::value_type& val) {
|
|
Traverse_Policy::apply_wrap(me, i ,j);
|
|
return apply(val);
|
|
}
|
|
|
|
template <class AE>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner &operator, (const vector_expression<AE> &nve) {
|
|
for (typename AE::size_type k = 0; k!= nve().size(); k++) {
|
|
operator,(nve()(k));
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
template <class AE>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner &operator, (const matrix_expression<AE> &nme) {
|
|
return apply(nme);
|
|
}
|
|
|
|
template <typename T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner &operator, (const index_manipulator<T> &ta) {
|
|
ta().manip(i, j);
|
|
return *this;
|
|
}
|
|
|
|
template <class T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<E, T, Traverse_Policy> operator, (fill_policy_wrapper<T>) const {
|
|
return matrix_expression_assigner<E, T, Traverse_Policy>(me, i, j);
|
|
}
|
|
|
|
|
|
template <class T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<E, Fill_Policy, T> operator, (traverse_policy_wrapper<T>) {
|
|
Traverse_Policy::apply_wrap(me, i ,j);
|
|
return matrix_expression_assigner<E, Fill_Policy, T>(me, i, j);
|
|
}
|
|
|
|
private:
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner &apply(const typename E::expression_type::value_type& val) {
|
|
Fill_Policy::apply(me, i, j, val);
|
|
Traverse_Policy::advance(i,j);
|
|
return *this;
|
|
}
|
|
|
|
template <class AE>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner &apply(const matrix_expression<AE> &nme) {
|
|
size_type bi = i;
|
|
size_type bj = j;
|
|
typename AE::size_type k=0, l=0;
|
|
Fill_Policy::apply(me, i, j, nme()(k, l));
|
|
while (Traverse_Policy::next(nme, me, i, j, bi, bj, k, l))
|
|
Fill_Policy::apply(me, i, j, nme()(k, l));
|
|
return *this;
|
|
}
|
|
|
|
private:
|
|
E &me;
|
|
size_type i, j;
|
|
};
|
|
|
|
/**
|
|
* \brief A matrix_expression_assigner generator used with operator<<= for simple types
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<matrix_expression<E> > operator<<=(matrix_expression<E> &me, const typename E::value_type &val) {
|
|
return matrix_expression_assigner<matrix_expression<E> >(me,val);
|
|
}
|
|
|
|
/**
|
|
* \brief A matrix_expression_assigner generator used with operator<<= for choice of fill policy
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E, typename T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<matrix_expression<E>, T> operator<<=(matrix_expression<E> &me, fill_policy_wrapper<T>) {
|
|
return matrix_expression_assigner<matrix_expression<E>, T>(me);
|
|
}
|
|
|
|
/**
|
|
* \brief A matrix_expression_assigner generator used with operator<<= for traverse manipulators
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E, typename T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<matrix_expression<E> > operator<<=(matrix_expression<E> &me, const index_manipulator<T> &ta) {
|
|
return matrix_expression_assigner<matrix_expression<E> >(me,ta);
|
|
}
|
|
|
|
/**
|
|
* \brief A matrix_expression_assigner generator used with operator<<= for traverse manipulators
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E, typename T>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<matrix_expression<E>, fill_policy::index_assign, T> operator<<=(matrix_expression<E> &me, traverse_policy_wrapper<T>) {
|
|
return matrix_expression_assigner<matrix_expression<E>, fill_policy::index_assign, T>(me);
|
|
}
|
|
|
|
/**
|
|
* \brief A matrix_expression_assigner generator used with operator<<= for vector expressions
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E1, class E2>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<matrix_expression<E1> > operator<<=(matrix_expression<E1> &me, const vector_expression<E2> &ve) {
|
|
return matrix_expression_assigner<matrix_expression<E1> >(me,ve);
|
|
}
|
|
|
|
/**
|
|
* \brief A matrix_expression_assigner generator used with operator<<= for matrix expressions
|
|
*
|
|
* Please see EXAMPLES_LINK for usage information.
|
|
*
|
|
* \todo Add examples link
|
|
*/
|
|
template <class E1, class E2>
|
|
BOOST_UBLAS_INLINE
|
|
matrix_expression_assigner<matrix_expression<E1> > operator<<=(matrix_expression<E1> &me1, const matrix_expression<E2> &me2) {
|
|
return matrix_expression_assigner<matrix_expression<E1> >(me1,me2);
|
|
}
|
|
|
|
} } }
|
|
|
|
#endif // ASSIGNMENT_HPP
|