symmetric.hpp

support vector clustering for vc++

                    }
                } else /* if (current_ == 1) */ {
                    size_type d = (std::min) (n, it2_ - it2_begin_);
                    it2_ -= d;
                    n -= d;
                    if (n > 0) {
                        BOOST_UBLAS_CHECK (end_ == 0, external_logic ());
                        d = (std::min) (n, it1_end_ - it1_begin_);
                        it1_ = it1_end_ - d;
                        n -= d;
                        current_ = 0;
                    }
                }
                BOOST_UBLAS_CHECK (n == 0, external_logic ());
                return *this;
            }
            BOOST_UBLAS_INLINE
            difference_type operator - (const const_iterator1 &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
                BOOST_UBLAS_CHECK (it.current_ == 0 || it.current_ == 1, internal_logic ());
                BOOST_UBLAS_CHECK (/* begin_ == it.begin_ && */ end_ == it.end_, internal_logic ());
                if (current_ == 0 && it.current_ == 0) {
                    return it1_ - it.it1_;
                } else if (current_ == 0 && it.current_ == 1) {
                    if (end_ == 1 && it.end_ == 1) {
                        return (it1_ - it.it1_end_) + (it.it2_begin_ - it.it2_);
                    } else /* if (end_ == 0 && it.end_ == 0) */ {
                        return (it1_ - it.it1_begin_) + (it.it2_end_ - it.it2_);
                    }

                } else if (current_ == 1 && it.current_ == 0) {
                    if (end_ == 1 && it.end_ == 1) {
                        return (it2_ - it.it2_begin_) + (it.it1_end_ - it.it1_);
                    } else /* if (end_ == 0 && it.end_ == 0) */ {
                        return (it2_ - it.it2_end_) + (it.it1_begin_ - it.it1_);
                    }
                }
                /* current_ == 1 && it.current_ == 1 */ {
                    return it2_ - it.it2_;
                }
            }

            // Dereference
            BOOST_UBLAS_INLINE
            const_reference operator * () const {
                BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
                if (current_ == 0) {
                    BOOST_UBLAS_CHECK (it1_ != it1_end_, internal_logic ());
                    return *it1_;
                } else /* if (current_ == 1) */ {
                    BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
                    return *it2_;
                }
            }
            BOOST_UBLAS_INLINE
            const_reference operator [] (difference_type n) const {
                return *(*this + n);
            }

#ifndef BOOST_UBLAS_NO_NESTED_CLASS_RELATION
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            const_iterator2 begin () const {
                return (*this) ().find2 (1, index1 (), 0);
            }
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            const_iterator2 end () const {
                return (*this) ().find2 (1, index1 (), (*this) ().size2 ());
            }
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            const_reverse_iterator2 rbegin () const {
                return const_reverse_iterator2 (end ());
            }
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            const_reverse_iterator2 rend () const {
                return const_reverse_iterator2 (begin ());
            }
#endif

            // Indices
            BOOST_UBLAS_INLINE
            size_type index1 () const {
                BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
                if (current_ == 0) {
                    BOOST_UBLAS_CHECK (it1_ != it1_end_, internal_logic ());
                    return it1_.index1 ();
                } else /* if (current_ == 1) */ {
                    BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
                    return it2_.index2 ();
                }
            }
            BOOST_UBLAS_INLINE
            size_type index2 () const {
                BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
                if (current_ == 0) {
                    BOOST_UBLAS_CHECK (it1_ != it1_end_, internal_logic ());
                    return it1_.index2 ();
                } else /* if (current_ == 1) */ {
                    BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
                    return it2_.index1 ();
                }
            }

            // Assignment
            BOOST_UBLAS_INLINE
            const_iterator1 &operator = (const const_iterator1 &it) {
                container_const_reference<self_type>::assign (&it ());
                begin_ = it.begin_;
                end_ = it.end_;
                current_ = it.current_;
                it1_begin_ = it.it1_begin_;
                it1_end_ = it.it1_end_;
                it1_ = it.it1_;
                it2_begin_ = it.it2_begin_;
                it2_end_ = it.it2_end_;
                it2_ = it.it2_;
                return *this;
            }

            // Comparison
            BOOST_UBLAS_INLINE
            bool operator == (const const_iterator1 &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
                BOOST_UBLAS_CHECK (it.current_ == 0 || it.current_ == 1, internal_logic ());
                BOOST_UBLAS_CHECK (/* begin_ == it.begin_ && */ end_ == it.end_, internal_logic ());
                return (current_ == 0 && it.current_ == 0 && it1_ == it.it1_) ||
                       (current_ == 1 && it.current_ == 1 && it2_ == it.it2_);
            }
            BOOST_UBLAS_INLINE
            bool operator < (const const_iterator1 &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it - *this > 0;
            }

        private:
            int begin_;
            int end_;
            int current_;
            const_subiterator1_type it1_begin_;
            const_subiterator1_type it1_end_;
            const_subiterator1_type it1_;
            const_subiterator2_type it2_begin_;
            const_subiterator2_type it2_end_;
            const_subiterator2_type it2_;
        };
#endif

        BOOST_UBLAS_INLINE
        const_iterator1 begin1 () const {
            return find1 (0, 0, 0);
        }
        BOOST_UBLAS_INLINE
        const_iterator1 end1 () const {
            return find1 (0, size1 (), 0);
        }

#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
        class iterator1:
            public container_reference<symmetric_adaptor>,
            public random_access_iterator_base<typename iterator_restrict_traits<
                                                   typename subiterator1_type::iterator_category, packed_random_access_iterator_tag>::iterator_category,
                                               iterator1, value_type> {
        public:
            typedef typename subiterator1_type::value_type value_type;
            typedef typename subiterator1_type::difference_type difference_type;
            typedef typename subiterator1_type::reference reference;
            typedef typename subiterator1_type::pointer pointer;

            typedef iterator2 dual_iterator_type;
            typedef reverse_iterator2 dual_reverse_iterator_type;

            // Construction and destruction
            BOOST_UBLAS_INLINE
            iterator1 ():
                container_reference<self_type> (), it1_ () {}
            BOOST_UBLAS_INLINE
            iterator1 (self_type &m, const subiterator1_type &it1):
                container_reference<self_type> (m), it1_ (it1) {}

            // Arithmetic
            BOOST_UBLAS_INLINE
            iterator1 &operator ++ () {
                ++ it1_;
                return *this;
            }
            BOOST_UBLAS_INLINE
            iterator1 &operator -- () {
                -- it1_;
                return *this;
            }
            BOOST_UBLAS_INLINE
            iterator1 &operator += (difference_type n) {
                it1_ += n;
                return *this;
            }
            BOOST_UBLAS_INLINE
            iterator1 &operator -= (difference_type n) {
                it1_ -= n;
                return *this;
            }
            BOOST_UBLAS_INLINE
            difference_type operator - (const iterator1 &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it1_ - it.it1_;
            }

            // Dereference
            BOOST_UBLAS_INLINE
            reference operator * () const {
                return *it1_;
            }
            BOOST_UBLAS_INLINE
            reference operator [] (difference_type n) const {
                return *(*this + n);
            }

#ifndef BOOST_UBLAS_NO_NESTED_CLASS_RELATION
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            iterator2 begin () const {
                return (*this) ().find2 (1, index1 (), 0);
            }
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            iterator2 end () const {
                return (*this) ().find2 (1, index1 (), (*this) ().size2 ());
            }
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            reverse_iterator2 rbegin () const {
                return reverse_iterator2 (end ());
            }
            BOOST_UBLAS_INLINE
#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
            typename self_type::
#endif
            reverse_iterator2 rend () const {
                return reverse_iterator2 (begin ());
            }
#endif

            // Indices
            BOOST_UBLAS_INLINE
            size_type index1 () const {
                return it1_.index1 ();
            }
            BOOST_UBLAS_INLINE
            size_type index2 () const {
                return it1_.index2 ();
            }

            // Assignment
            BOOST_UBLAS_INLINE
            iterator1 &operator = (const iterator1 &it) {
                container_reference<self_type>::assign (&it ());
                it1_ = it.it1_;
                return *this;
            }

            // Comparison
            BOOST_UBLAS_INLINE
            bool operator == (const iterator1 &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it1_ == it.it1_;
            }
            BOOST_UBLAS_INLINE
            bool operator < (const iterator1 &it) const {
                BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
                return it1_ < it.it1_;
            }

        private:
            subiterator1_type it1_;

            friend class const_iterator1;
        };
#endif

        BOOST_UBLAS_INLINE
        iterator1 begin1 () {
            return find1 (0, 0, 0);
        }
        BOOST_UBLAS_INLINE
        iterator1 end1 () {
            return find1 (0, size1 (), 0);
        }

#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
        class const_iterator2:
            public container_const_reference<symmetric_adaptor>,
            public random_access_iterator_base<typename iterator_restrict_traits<
                                                   typename const_subiterator2_type::iterator_category, dense_random_access_iterator_tag>::iterator_category,
                                               const_iterator2, value_type> {
        public:
            typedef typename const_subiterator2_type::value_type value_type;
            typedef typename const_subiterator2_type::difference_type difference_type;
            typedef typename const_subiterator2_type::reference reference;
            typedef typename const_subiterator2_type::pointer pointer;

            typedef const_iterator1 dual_iterator_type;
            typedef const_reverse_iterator1 dual_reverse_iterator_type;

            // Construction and destruction
            BOOST_UBLAS_INLINE
            const_iterator2 ():
                container_const_reference<self_type> (),
                begin_ (-1), end_ (-1), current_ (-1),
                it1_begin_ (), it1_end_ (), it1_ (),
                it2_begin_ (), it2_end_ (), it2_ () {}
            BOOST_UBLAS_INLINE