Squashed 'third_party/boostorg/ublas/' content from commit e8607b3
Change-Id: Ia06afd642157a24e17fa9ddea28fb8601810b78e
git-subtree-dir: third_party/boostorg/ublas
git-subtree-split: e8607b3eea238e590eca93bfe498c21f470155c1
diff --git a/include/boost/numeric/ublas/symmetric.hpp b/include/boost/numeric/ublas/symmetric.hpp
new file mode 100644
index 0000000..9a40969
--- /dev/null
+++ b/include/boost/numeric/ublas/symmetric.hpp
@@ -0,0 +1,2309 @@
+//
+// Copyright (c) 2000-2002
+// Joerg Walter, Mathias Koch
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// The authors gratefully acknowledge the support of
+// GeNeSys mbH & Co. KG in producing this work.
+//
+
+#ifndef _BOOST_UBLAS_SYMMETRIC_
+#define _BOOST_UBLAS_SYMMETRIC_
+
+#include <boost/numeric/ublas/matrix.hpp>
+#include <boost/numeric/ublas/triangular.hpp>
+#include <boost/numeric/ublas/detail/temporary.hpp>
+
+// Iterators based on ideas of Jeremy Siek
+// Symmetric matrices are square. Thanks to Peter Schmitteckert for spotting this.
+
+namespace boost { namespace numeric { namespace ublas {
+
+ template<class M>
+ bool is_symmetric (const M &m) {
+ typedef typename M::size_type size_type;
+
+ if (m.size1 () != m.size2 ())
+ return false;
+ size_type size = BOOST_UBLAS_SAME (m.size1 (), m.size2 ());
+ for (size_type i = 0; i < size; ++ i) {
+ for (size_type j = i; j < size; ++ j) {
+ if (m (i, j) != m (j, i))
+ return false;
+ }
+ }
+ return true;
+ }
+
+ // Array based symmetric matrix class
+ template<class T, class TRI, class L, class A>
+ class symmetric_matrix:
+ public matrix_container<symmetric_matrix<T, TRI, L, A> > {
+
+ typedef T *pointer;
+ typedef TRI triangular_type;
+ typedef L layout_type;
+ typedef symmetric_matrix<T, TRI, L, A> self_type;
+ public:
+#ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS
+ using matrix_container<self_type>::operator ();
+#endif
+ typedef typename A::size_type size_type;
+ typedef typename A::difference_type difference_type;
+ typedef T value_type;
+ typedef const T &const_reference;
+ typedef T &reference;
+ typedef A array_type;
+
+ typedef const matrix_reference<const self_type> const_closure_type;
+ typedef matrix_reference<self_type> closure_type;
+ typedef vector<T, A> vector_temporary_type;
+ typedef matrix<T, L, A> matrix_temporary_type; // general sub-matrix
+ typedef packed_tag storage_category;
+ typedef typename L::orientation_category orientation_category;
+
+ // Construction and destruction
+ BOOST_UBLAS_INLINE
+ symmetric_matrix ():
+ matrix_container<self_type> (),
+ size_ (0), data_ (0) {}
+ BOOST_UBLAS_INLINE
+ symmetric_matrix (size_type size):
+ matrix_container<self_type> (),
+ size_ (BOOST_UBLAS_SAME (size, size)), data_ (triangular_type::packed_size (layout_type (), size, size)) {
+ }
+ BOOST_UBLAS_INLINE
+ symmetric_matrix (size_type size1, size_type size2):
+ matrix_container<self_type> (),
+ size_ (BOOST_UBLAS_SAME (size1, size2)), data_ (triangular_type::packed_size (layout_type (), size1, size2)) {
+ }
+ BOOST_UBLAS_INLINE
+ symmetric_matrix (size_type size, const array_type &data):
+ matrix_container<self_type> (),
+ size_ (size), data_ (data) {}
+ BOOST_UBLAS_INLINE
+ symmetric_matrix (const symmetric_matrix &m):
+ matrix_container<self_type> (),
+ size_ (m.size_), data_ (m.data_) {}
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix (const matrix_expression<AE> &ae):
+ matrix_container<self_type> (),
+ size_ (BOOST_UBLAS_SAME (ae ().size1 (), ae ().size2 ())),
+ data_ (triangular_type::packed_size (layout_type (), size_, size_)) {
+ matrix_assign<scalar_assign> (*this, ae);
+ }
+
+ // Accessors
+ BOOST_UBLAS_INLINE
+ size_type size1 () const {
+ return size_;
+ }
+ BOOST_UBLAS_INLINE
+ size_type size2 () const {
+ return size_;
+ }
+
+ // Storage accessors
+ BOOST_UBLAS_INLINE
+ const array_type &data () const {
+ return data_;
+ }
+ BOOST_UBLAS_INLINE
+ array_type &data () {
+ return data_;
+ }
+
+ // Resizing
+ BOOST_UBLAS_INLINE
+ void resize (size_type size, bool preserve = true) {
+ if (preserve) {
+ self_type temporary (size, size);
+ detail::matrix_resize_preserve<layout_type, triangular_type> (*this, temporary);
+ }
+ else {
+ data ().resize (triangular_type::packed_size (layout_type (), size, size));
+ size_ = size;
+ }
+ }
+ BOOST_UBLAS_INLINE
+ void resize (size_type size1, size_type size2, bool preserve = true) {
+ resize (BOOST_UBLAS_SAME (size1, size2), preserve);
+ }
+ BOOST_UBLAS_INLINE
+ void resize_packed_preserve (size_type size) {
+ size_ = BOOST_UBLAS_SAME (size, size);
+ data ().resize (triangular_type::packed_size (layout_type (), size_, size_), value_type ());
+ }
+
+ // Element access
+ BOOST_UBLAS_INLINE
+ const_reference operator () (size_type i, size_type j) const {
+ BOOST_UBLAS_CHECK (i < size_, bad_index ());
+ BOOST_UBLAS_CHECK (j < size_, bad_index ());
+ if (triangular_type::other (i, j))
+ return data () [triangular_type::element (layout_type (), i, size_, j, size_)];
+ else
+ return data () [triangular_type::element (layout_type (), j, size_, i, size_)];
+ }
+ BOOST_UBLAS_INLINE
+ reference at_element (size_type i, size_type j) {
+ BOOST_UBLAS_CHECK (i < size_, bad_index ());
+ BOOST_UBLAS_CHECK (j < size_, bad_index ());
+ return data () [triangular_type::element (layout_type (), i, size_, j, size_)];
+ }
+ BOOST_UBLAS_INLINE
+ reference operator () (size_type i, size_type j) {
+ BOOST_UBLAS_CHECK (i < size_, bad_index ());
+ BOOST_UBLAS_CHECK (j < size_, bad_index ());
+ if (triangular_type::other (i, j))
+ return data () [triangular_type::element (layout_type (), i, size_, j, size_)];
+ else
+ return data () [triangular_type::element (layout_type (), j, size_, i, size_)];
+ }
+
+ // Element assignment
+ BOOST_UBLAS_INLINE
+ reference insert_element (size_type i, size_type j, const_reference t) {
+ return (operator () (i, j) = t);
+ }
+ BOOST_UBLAS_INLINE
+ void erase_element (size_type i, size_type j) {
+ operator () (i, j) = value_type/*zero*/();
+ }
+
+ // Zeroing
+ BOOST_UBLAS_INLINE
+ void clear () {
+ // data ().clear ();
+ std::fill (data ().begin (), data ().end (), value_type/*zero*/());
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ symmetric_matrix &operator = (const symmetric_matrix &m) {
+ size_ = m.size_;
+ data () = m.data ();
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ symmetric_matrix &assign_temporary (symmetric_matrix &m) {
+ swap (m);
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix &operator = (const matrix_expression<AE> &ae) {
+ self_type temporary (ae);
+ return assign_temporary (temporary);
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix &assign (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_assign> (*this, ae);
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix& operator += (const matrix_expression<AE> &ae) {
+ self_type temporary (*this + ae);
+ return assign_temporary (temporary);
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix &plus_assign (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_plus_assign> (*this, ae);
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix& operator -= (const matrix_expression<AE> &ae) {
+ self_type temporary (*this - ae);
+ return assign_temporary (temporary);
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix &minus_assign (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_minus_assign> (*this, ae);
+ return *this;
+ }
+ template<class AT>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix& operator *= (const AT &at) {
+ matrix_assign_scalar<scalar_multiplies_assign> (*this, at);
+ return *this;
+ }
+ template<class AT>
+ BOOST_UBLAS_INLINE
+ symmetric_matrix& operator /= (const AT &at) {
+ matrix_assign_scalar<scalar_divides_assign> (*this, at);
+ return *this;
+ }
+
+ // Swapping
+ BOOST_UBLAS_INLINE
+ void swap (symmetric_matrix &m) {
+ if (this != &m) {
+ std::swap (size_, m.size_);
+ data ().swap (m.data ());
+ }
+ }
+ BOOST_UBLAS_INLINE
+ friend void swap (symmetric_matrix &m1, symmetric_matrix &m2) {
+ m1.swap (m2);
+ }
+
+ // Iterator types
+#ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ typedef indexed_iterator1<self_type, packed_random_access_iterator_tag> iterator1;
+ typedef indexed_iterator2<self_type, packed_random_access_iterator_tag> iterator2;
+ typedef indexed_const_iterator1<self_type, dense_random_access_iterator_tag> const_iterator1;
+ typedef indexed_const_iterator2<self_type, dense_random_access_iterator_tag> const_iterator2;
+#else
+ class const_iterator1;
+ class iterator1;
+ class const_iterator2;
+ class iterator2;
+#endif
+ typedef reverse_iterator_base1<const_iterator1> const_reverse_iterator1;
+ typedef reverse_iterator_base1<iterator1> reverse_iterator1;
+ typedef reverse_iterator_base2<const_iterator2> const_reverse_iterator2;
+ typedef reverse_iterator_base2<iterator2> reverse_iterator2;
+
+ // Element lookup
+ BOOST_UBLAS_INLINE
+ const_iterator1 find1 (int /* rank */, size_type i, size_type j) const {
+ return const_iterator1 (*this, i, j);
+ }
+ BOOST_UBLAS_INLINE
+ iterator1 find1 (int rank, size_type i, size_type j) {
+ if (rank == 1)
+ i = triangular_type::mutable_restrict1 (i, j, size1(), size2());
+ if (rank == 0)
+ i = triangular_type::global_mutable_restrict1 (i, size1(), j, size2());
+ return iterator1 (*this, i, j);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 find2 (int /* rank */, size_type i, size_type j) const {
+ return const_iterator2 (*this, i, j);
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 find2 (int rank, size_type i, size_type j) {
+ if (rank == 1)
+ j = triangular_type::mutable_restrict2 (i, j, size1(), size2());
+ if (rank == 0)
+ j = triangular_type::global_mutable_restrict2 (i, size1(), j, size2());
+ return iterator2 (*this, i, j);
+ }
+
+ // Iterators simply are indices.
+
+#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ class const_iterator1:
+ public container_const_reference<symmetric_matrix>,
+ public random_access_iterator_base<dense_random_access_iterator_tag,
+ const_iterator1, value_type> {
+ public:
+ typedef typename symmetric_matrix::value_type value_type;
+ typedef typename symmetric_matrix::difference_type difference_type;
+ typedef typename symmetric_matrix::const_reference reference;
+ typedef const typename symmetric_matrix::pointer pointer;
+
+ typedef const_iterator2 dual_iterator_type;
+ typedef const_reverse_iterator2 dual_reverse_iterator_type;
+
+ // Construction and destruction
+ BOOST_UBLAS_INLINE
+ const_iterator1 ():
+ container_const_reference<self_type> (), it1_ (), it2_ () {}
+ BOOST_UBLAS_INLINE
+ const_iterator1 (const self_type &m, size_type it1, size_type it2):
+ container_const_reference<self_type> (m), it1_ (it1), it2_ (it2) {}
+ BOOST_UBLAS_INLINE
+ const_iterator1 (const iterator1 &it):
+ container_const_reference<self_type> (it ()), it1_ (it.it1_), it2_ (it.it2_) {}
+
+ // Arithmetic
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator ++ () {
+ ++ it1_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator -- () {
+ -- it1_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator += (difference_type n) {
+ it1_ += n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator -= (difference_type n) {
+ it1_ -= n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ difference_type operator - (const const_iterator1 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it2_ == it.it2_, external_logic ());
+ return it1_ - it.it1_;
+ }
+
+ // Dereference
+ BOOST_UBLAS_INLINE
+ const_reference operator * () const {
+ return (*this) () (it1_, 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, it1_, 0);
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator2 cbegin () const {
+ return begin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator2 end () const {
+ return (*this) ().find2 (1, it1_, (*this) ().size2 ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator2 cend () const {
+ return end ();
+ }
+ 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 crbegin () const {
+ return rbegin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator2 rend () const {
+ return const_reverse_iterator2 (begin ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator2 crend () const {
+ return rend ();
+ }
+#endif
+
+ // Indices
+ BOOST_UBLAS_INLINE
+ size_type index1 () const {
+ return it1_;
+ }
+ BOOST_UBLAS_INLINE
+ size_type index2 () const {
+ return it2_;
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator = (const const_iterator1 &it) {
+ container_const_reference<self_type>::assign (&it ());
+ it1_ = it.it1_;
+ 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 (it2_ == it.it2_, external_logic ());
+ return it1_ == it.it1_;
+ }
+ BOOST_UBLAS_INLINE
+ bool operator < (const const_iterator1 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it2_ == it.it2_, external_logic ());
+ return it1_ < it.it1_;
+ }
+
+ private:
+ size_type it1_;
+ size_type it2_;
+ };
+#endif
+
+ BOOST_UBLAS_INLINE
+ const_iterator1 begin1 () const {
+ return find1 (0, 0, 0);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 cbegin1 () const {
+ return begin1 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 end1 () const {
+ return find1 (0, size_, 0);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 cend1 () const {
+ return end1 ();
+ }
+
+#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ class iterator1:
+ public container_reference<symmetric_matrix>,
+ public random_access_iterator_base<packed_random_access_iterator_tag,
+ iterator1, value_type> {
+ public:
+ typedef typename symmetric_matrix::value_type value_type;
+ typedef typename symmetric_matrix::difference_type difference_type;
+ typedef typename symmetric_matrix::reference reference;
+ typedef typename symmetric_matrix::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_ (), it2_ () {}
+ BOOST_UBLAS_INLINE
+ iterator1 (self_type &m, size_type it1, size_type it2):
+ container_reference<self_type> (m), it1_ (it1), it2_ (it2) {}
+
+ // 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 ());
+ BOOST_UBLAS_CHECK (it2_ == it.it2_, external_logic ());
+ return it1_ - it.it1_;
+ }
+
+ // Dereference
+ BOOST_UBLAS_INLINE
+ reference operator * () const {
+ return (*this) () (it1_, it2_);
+ }
+ 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, it1_, 0);
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ iterator2 end () const {
+ return (*this) ().find2 (1, it1_, (*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_;
+ }
+ BOOST_UBLAS_INLINE
+ size_type index2 () const {
+ return it2_;
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ iterator1 &operator = (const iterator1 &it) {
+ container_reference<self_type>::assign (&it ());
+ it1_ = it.it1_;
+ it2_ = it.it2_;
+ return *this;
+ }
+
+ // Comparison
+ BOOST_UBLAS_INLINE
+ bool operator == (const iterator1 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it2_ == it.it2_, external_logic ());
+ return it1_ == it.it1_;
+ }
+ BOOST_UBLAS_INLINE
+ bool operator < (const iterator1 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it2_ == it.it2_, external_logic ());
+ return it1_ < it.it1_;
+ }
+
+ private:
+ size_type it1_;
+ size_type it2_;
+
+ friend class const_iterator1;
+ };
+#endif
+
+ BOOST_UBLAS_INLINE
+ iterator1 begin1 () {
+ return find1 (0, 0, 0);
+ }
+ BOOST_UBLAS_INLINE
+ iterator1 end1 () {
+ return find1 (0, size_, 0);
+ }
+
+#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ class const_iterator2:
+ public container_const_reference<symmetric_matrix>,
+ public random_access_iterator_base<dense_random_access_iterator_tag,
+ const_iterator2, value_type> {
+ public:
+ typedef typename symmetric_matrix::value_type value_type;
+ typedef typename symmetric_matrix::difference_type difference_type;
+ typedef typename symmetric_matrix::const_reference reference;
+ typedef const typename symmetric_matrix::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> (), it1_ (), it2_ () {}
+ BOOST_UBLAS_INLINE
+ const_iterator2 (const self_type &m, size_type it1, size_type it2):
+ container_const_reference<self_type> (m), it1_ (it1), it2_ (it2) {}
+ BOOST_UBLAS_INLINE
+ const_iterator2 (const iterator2 &it):
+ container_const_reference<self_type> (it ()), it1_ (it.it1_), it2_ (it.it2_) {}
+
+ // Arithmetic
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator ++ () {
+ ++ it2_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator -- () {
+ -- it2_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator += (difference_type n) {
+ it2_ += n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator -= (difference_type n) {
+ it2_ -= n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ difference_type operator - (const const_iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it1_ == it.it1_, external_logic ());
+ return it2_ - it.it2_;
+ }
+
+ // Dereference
+ BOOST_UBLAS_INLINE
+ const_reference operator * () const {
+ return (*this) () (it1_, 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_iterator1 begin () const {
+ return (*this) ().find1 (1, 0, it2_);
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator1 cbegin () const {
+ return begin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator1 end () const {
+ return (*this) ().find1 (1, (*this) ().size1 (), it2_);
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator1 cend () const {
+ return end ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 rbegin () const {
+ return const_reverse_iterator1 (end ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 crbegin () const {
+ return rbegin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 rend () const {
+ return const_reverse_iterator1 (begin ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 crend () const {
+ return rend ();
+ }
+#endif
+
+ // Indices
+ BOOST_UBLAS_INLINE
+ size_type index1 () const {
+ return it1_;
+ }
+ BOOST_UBLAS_INLINE
+ size_type index2 () const {
+ return it2_;
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator = (const const_iterator2 &it) {
+ container_const_reference<self_type>::assign (&it ());
+ it1_ = it.it1_;
+ it2_ = it.it2_;
+ return *this;
+ }
+
+ // Comparison
+ BOOST_UBLAS_INLINE
+ bool operator == (const const_iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it1_ == it.it1_, external_logic ());
+ return it2_ == it.it2_;
+ }
+ BOOST_UBLAS_INLINE
+ bool operator < (const const_iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it1_ == it.it1_, external_logic ());
+ return it2_ < it.it2_;
+ }
+
+ private:
+ size_type it1_;
+ size_type it2_;
+ };
+#endif
+
+ BOOST_UBLAS_INLINE
+ const_iterator2 begin2 () const {
+ return find2 (0, 0, 0);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 cbegin2 () const {
+ return begin2 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 end2 () const {
+ return find2 (0, 0, size_);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 cend2 () const {
+ return end2 ();
+ }
+
+#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ class iterator2:
+ public container_reference<symmetric_matrix>,
+ public random_access_iterator_base<packed_random_access_iterator_tag,
+ iterator2, value_type> {
+ public:
+ typedef typename symmetric_matrix::value_type value_type;
+ typedef typename symmetric_matrix::difference_type difference_type;
+ typedef typename symmetric_matrix::reference reference;
+ typedef typename symmetric_matrix::pointer pointer;
+
+ typedef iterator1 dual_iterator_type;
+ typedef reverse_iterator1 dual_reverse_iterator_type;
+
+ // Construction and destruction
+ BOOST_UBLAS_INLINE
+ iterator2 ():
+ container_reference<self_type> (), it1_ (), it2_ () {}
+ BOOST_UBLAS_INLINE
+ iterator2 (self_type &m, size_type it1, size_type it2):
+ container_reference<self_type> (m), it1_ (it1), it2_ (it2) {}
+
+ // Arithmetic
+ BOOST_UBLAS_INLINE
+ iterator2 &operator ++ () {
+ ++ it2_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 &operator -- () {
+ -- it2_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 &operator += (difference_type n) {
+ it2_ += n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 &operator -= (difference_type n) {
+ it2_ -= n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ difference_type operator - (const iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it1_ == it.it1_, external_logic ());
+ return it2_ - it.it2_;
+ }
+
+ // Dereference
+ BOOST_UBLAS_INLINE
+ reference operator * () const {
+ return (*this) () (it1_, it2_);
+ }
+ 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
+ iterator1 begin () const {
+ return (*this) ().find1 (1, 0, it2_);
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ iterator1 end () const {
+ return (*this) ().find1 (1, (*this) ().size1 (), it2_);
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ reverse_iterator1 rbegin () const {
+ return reverse_iterator1 (end ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ reverse_iterator1 rend () const {
+ return reverse_iterator1 (begin ());
+ }
+#endif
+
+ // Indices
+ BOOST_UBLAS_INLINE
+ size_type index1 () const {
+ return it1_;
+ }
+ BOOST_UBLAS_INLINE
+ size_type index2 () const {
+ return it2_;
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ iterator2 &operator = (const iterator2 &it) {
+ container_reference<self_type>::assign (&it ());
+ it1_ = it.it1_;
+ it2_ = it.it2_;
+ return *this;
+ }
+
+ // Comparison
+ BOOST_UBLAS_INLINE
+ bool operator == (const iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it1_ == it.it1_, external_logic ());
+ return it2_ == it.it2_;
+ }
+ BOOST_UBLAS_INLINE
+ bool operator < (const iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ BOOST_UBLAS_CHECK (it1_ == it.it1_, external_logic ());
+ return it2_ < it.it2_;
+ }
+
+ private:
+ size_type it1_;
+ size_type it2_;
+
+ friend class const_iterator2;
+ };
+#endif
+
+ BOOST_UBLAS_INLINE
+ iterator2 begin2 () {
+ return find2 (0, 0, 0);
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 end2 () {
+ return find2 (0, 0, size_);
+ }
+
+ // Reverse iterators
+
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 rbegin1 () const {
+ return const_reverse_iterator1 (end1 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 crbegin1 () const {
+ return rbegin1 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 rend1 () const {
+ return const_reverse_iterator1 (begin1 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 crend1 () const {
+ return rend1 ();
+ }
+
+ BOOST_UBLAS_INLINE
+ reverse_iterator1 rbegin1 () {
+ return reverse_iterator1 (end1 ());
+ }
+ BOOST_UBLAS_INLINE
+ reverse_iterator1 rend1 () {
+ return reverse_iterator1 (begin1 ());
+ }
+
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 rbegin2 () const {
+ return const_reverse_iterator2 (end2 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 crbegin2 () const {
+ return rbegin2 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 rend2 () const {
+ return const_reverse_iterator2 (begin2 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 crend2 () const {
+ return rend2 ();
+ }
+ BOOST_UBLAS_INLINE
+ reverse_iterator2 rbegin2 () {
+ return reverse_iterator2 (end2 ());
+ }
+ BOOST_UBLAS_INLINE
+ reverse_iterator2 rend2 () {
+ return reverse_iterator2 (begin2 ());
+ }
+
+ private:
+ size_type size_;
+ array_type data_;
+ };
+
+
+ // Symmetric matrix adaptor class
+ template<class M, class TRI>
+ class symmetric_adaptor:
+ public matrix_expression<symmetric_adaptor<M, TRI> > {
+
+ typedef symmetric_adaptor<M, TRI> self_type;
+ public:
+#ifdef BOOST_UBLAS_ENABLE_PROXY_SHORTCUTS
+ using matrix_expression<self_type>::operator ();
+#endif
+ typedef const M const_matrix_type;
+ typedef M matrix_type;
+ typedef TRI triangular_type;
+ typedef typename M::size_type size_type;
+ typedef typename M::difference_type difference_type;
+ typedef typename M::value_type value_type;
+ typedef typename M::const_reference const_reference;
+ typedef typename boost::mpl::if_<boost::is_const<M>,
+ typename M::const_reference,
+ typename M::reference>::type reference;
+ typedef typename boost::mpl::if_<boost::is_const<M>,
+ typename M::const_closure_type,
+ typename M::closure_type>::type matrix_closure_type;
+ typedef const self_type const_closure_type;
+ typedef self_type closure_type;
+ // Replaced by _temporary_traits to avoid type requirements on M
+ //typedef typename M::vector_temporary_type vector_temporary_type;
+ //typedef typename M::matrix_temporary_type matrix_temporary_type;
+ typedef typename storage_restrict_traits<typename M::storage_category,
+ packed_proxy_tag>::storage_category storage_category;
+ typedef typename M::orientation_category orientation_category;
+
+ // Construction and destruction
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor (matrix_type &data):
+ matrix_expression<self_type> (),
+ data_ (data) {
+ BOOST_UBLAS_CHECK (data_.size1 () == data_.size2 (), bad_size ());
+ }
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor (const symmetric_adaptor &m):
+ matrix_expression<self_type> (),
+ data_ (m.data_) {
+ BOOST_UBLAS_CHECK (data_.size1 () == data_.size2 (), bad_size ());
+ }
+
+ // Accessors
+ BOOST_UBLAS_INLINE
+ size_type size1 () const {
+ return data_.size1 ();
+ }
+ BOOST_UBLAS_INLINE
+ size_type size2 () const {
+ return data_.size2 ();
+ }
+
+ // Storage accessors
+ BOOST_UBLAS_INLINE
+ const matrix_closure_type &data () const {
+ return data_;
+ }
+ BOOST_UBLAS_INLINE
+ matrix_closure_type &data () {
+ return data_;
+ }
+
+ // Element access
+#ifndef BOOST_UBLAS_PROXY_CONST_MEMBER
+ BOOST_UBLAS_INLINE
+ const_reference operator () (size_type i, size_type j) const {
+ BOOST_UBLAS_CHECK (i < size1 (), bad_index ());
+ BOOST_UBLAS_CHECK (j < size2 (), bad_index ());
+ if (triangular_type::other (i, j))
+ return data () (i, j);
+ else
+ return data () (j, i);
+ }
+ BOOST_UBLAS_INLINE
+ reference operator () (size_type i, size_type j) {
+ BOOST_UBLAS_CHECK (i < size1 (), bad_index ());
+ BOOST_UBLAS_CHECK (j < size2 (), bad_index ());
+ if (triangular_type::other (i, j))
+ return data () (i, j);
+ else
+ return data () (j, i);
+ }
+#else
+ BOOST_UBLAS_INLINE
+ reference operator () (size_type i, size_type j) const {
+ BOOST_UBLAS_CHECK (i < size1 (), bad_index ());
+ BOOST_UBLAS_CHECK (j < size2 (), bad_index ());
+ if (triangular_type::other (i, j))
+ return data () (i, j);
+ else
+ return data () (j, i);
+ }
+#endif
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor &operator = (const symmetric_adaptor &m) {
+ matrix_assign<scalar_assign, triangular_type> (*this, m);
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor &assign_temporary (symmetric_adaptor &m) {
+ *this = m;
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor &operator = (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_assign, triangular_type> (*this, matrix<value_type> (ae));
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor &assign (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_assign, triangular_type> (*this, ae);
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor& operator += (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_assign, triangular_type> (*this, matrix<value_type> (*this + ae));
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor &plus_assign (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_plus_assign, triangular_type> (*this, ae);
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor& operator -= (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_assign, triangular_type> (*this, matrix<value_type> (*this - ae));
+ return *this;
+ }
+ template<class AE>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor &minus_assign (const matrix_expression<AE> &ae) {
+ matrix_assign<scalar_minus_assign, triangular_type> (*this, ae);
+ return *this;
+ }
+ template<class AT>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor& operator *= (const AT &at) {
+ matrix_assign_scalar<scalar_multiplies_assign> (*this, at);
+ return *this;
+ }
+ template<class AT>
+ BOOST_UBLAS_INLINE
+ symmetric_adaptor& operator /= (const AT &at) {
+ matrix_assign_scalar<scalar_divides_assign> (*this, at);
+ return *this;
+ }
+
+ // Closure comparison
+ BOOST_UBLAS_INLINE
+ bool same_closure (const symmetric_adaptor &sa) const {
+ return (*this).data ().same_closure (sa.data ());
+ }
+
+ // Swapping
+ BOOST_UBLAS_INLINE
+ void swap (symmetric_adaptor &m) {
+ if (this != &m)
+ matrix_swap<scalar_swap, triangular_type> (*this, m);
+ }
+ BOOST_UBLAS_INLINE
+ friend void swap (symmetric_adaptor &m1, symmetric_adaptor &m2) {
+ m1.swap (m2);
+ }
+
+ // Iterator types
+ private:
+ // Use matrix iterator
+ typedef typename M::const_iterator1 const_subiterator1_type;
+ typedef typename boost::mpl::if_<boost::is_const<M>,
+ typename M::const_iterator1,
+ typename M::iterator1>::type subiterator1_type;
+ typedef typename M::const_iterator2 const_subiterator2_type;
+ typedef typename boost::mpl::if_<boost::is_const<M>,
+ typename M::const_iterator2,
+ typename M::iterator2>::type subiterator2_type;
+
+ public:
+#ifdef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ typedef indexed_iterator1<self_type, packed_random_access_iterator_tag> iterator1;
+ typedef indexed_iterator2<self_type, packed_random_access_iterator_tag> iterator2;
+ typedef indexed_const_iterator1<self_type, dense_random_access_iterator_tag> const_iterator1;
+ typedef indexed_const_iterator2<self_type, dense_random_access_iterator_tag> const_iterator2;
+#else
+ class const_iterator1;
+ class iterator1;
+ class const_iterator2;
+ class iterator2;
+#endif
+ typedef reverse_iterator_base1<const_iterator1> const_reverse_iterator1;
+ typedef reverse_iterator_base1<iterator1> reverse_iterator1;
+ typedef reverse_iterator_base2<const_iterator2> const_reverse_iterator2;
+ typedef reverse_iterator_base2<iterator2> reverse_iterator2;
+
+ // Element lookup
+ BOOST_UBLAS_INLINE
+ const_iterator1 find1 (int rank, size_type i, size_type j) const {
+ if (triangular_type::other (i, j)) {
+ if (triangular_type::other (size1 (), j)) {
+ return const_iterator1 (*this, 0, 0,
+ data ().find1 (rank, i, j), data ().find1 (rank, size1 (), j),
+ data ().find2 (rank, size2 (), size1 ()), data ().find2 (rank, size2 (), size1 ()));
+ } else {
+ return const_iterator1 (*this, 0, 1,
+ data ().find1 (rank, i, j), data ().find1 (rank, j, j),
+ data ().find2 (rank, j, j), data ().find2 (rank, j, size1 ()));
+ }
+ } else {
+ if (triangular_type::other (size1 (), j)) {
+ return const_iterator1 (*this, 1, 0,
+ data ().find1 (rank, j, j), data ().find1 (rank, size1 (), j),
+ data ().find2 (rank, j, i), data ().find2 (rank, j, j));
+ } else {
+ return const_iterator1 (*this, 1, 1,
+ data ().find1 (rank, size1 (), size2 ()), data ().find1 (rank, size1 (), size2 ()),
+ data ().find2 (rank, j, i), data ().find2 (rank, j, size1 ()));
+ }
+ }
+ }
+ BOOST_UBLAS_INLINE
+ iterator1 find1 (int rank, size_type i, size_type j) {
+ if (rank == 1)
+ i = triangular_type::mutable_restrict1 (i, j, size1(), size2());
+ return iterator1 (*this, data ().find1 (rank, i, j));
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 find2 (int rank, size_type i, size_type j) const {
+ if (triangular_type::other (i, j)) {
+ if (triangular_type::other (i, size2 ())) {
+ return const_iterator2 (*this, 1, 1,
+ data ().find1 (rank, size2 (), size1 ()), data ().find1 (rank, size2 (), size1 ()),
+ data ().find2 (rank, i, j), data ().find2 (rank, i, size2 ()));
+ } else {
+ return const_iterator2 (*this, 1, 0,
+ data ().find1 (rank, i, i), data ().find1 (rank, size2 (), i),
+ data ().find2 (rank, i, j), data ().find2 (rank, i, i));
+ }
+ } else {
+ if (triangular_type::other (i, size2 ())) {
+ return const_iterator2 (*this, 0, 1,
+ data ().find1 (rank, j, i), data ().find1 (rank, i, i),
+ data ().find2 (rank, i, i), data ().find2 (rank, i, size2 ()));
+ } else {
+ return const_iterator2 (*this, 0, 0,
+ data ().find1 (rank, j, i), data ().find1 (rank, size2 (), i),
+ data ().find2 (rank, size1 (), size2 ()), data ().find2 (rank, size2 (), size2 ()));
+ }
+ }
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 find2 (int rank, size_type i, size_type j) {
+ if (rank == 1)
+ j = triangular_type::mutable_restrict2 (i, j, size1(), size2());
+ return iterator2 (*this, data ().find2 (rank, i, j));
+ }
+
+ // Iterators simply are indices.
+
+#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ class const_iterator1:
+ public container_const_reference<symmetric_adaptor>,
+ public random_access_iterator_base<typename iterator_restrict_traits<
+ typename const_subiterator1_type::iterator_category, dense_random_access_iterator_tag>::iterator_category,
+ const_iterator1, value_type> {
+ public:
+ typedef typename const_subiterator1_type::value_type value_type;
+ typedef typename const_subiterator1_type::difference_type difference_type;
+ typedef typename const_subiterator1_type::reference reference;
+ typedef typename const_subiterator1_type::pointer pointer;
+
+ typedef const_iterator2 dual_iterator_type;
+ typedef const_reverse_iterator2 dual_reverse_iterator_type;
+
+ // Construction and destruction
+ BOOST_UBLAS_INLINE
+ const_iterator1 ():
+ container_const_reference<self_type> (),
+ begin_ (-1), end_ (-1), current_ (-1),
+ it1_begin_ (), it1_end_ (), it1_ (),
+ it2_begin_ (), it2_end_ (), it2_ () {}
+ BOOST_UBLAS_INLINE
+ const_iterator1 (const self_type &m, int begin, int end,
+ const const_subiterator1_type &it1_begin, const const_subiterator1_type &it1_end,
+ const const_subiterator2_type &it2_begin, const const_subiterator2_type &it2_end):
+ container_const_reference<self_type> (m),
+ begin_ (begin), end_ (end), current_ (begin),
+ it1_begin_ (it1_begin), it1_end_ (it1_end), it1_ (it1_begin_),
+ it2_begin_ (it2_begin), it2_end_ (it2_end), it2_ (it2_begin_) {
+ if (current_ == 0 && it1_ == it1_end_)
+ current_ = 1;
+ if (current_ == 1 && it2_ == it2_end_)
+ current_ = 0;
+ if ((current_ == 0 && it1_ == it1_end_) ||
+ (current_ == 1 && it2_ == it2_end_))
+ current_ = end_;
+ BOOST_UBLAS_CHECK (current_ == end_ ||
+ (current_ == 0 && it1_ != it1_end_) ||
+ (current_ == 1 && it2_ != it2_end_), internal_logic ());
+ }
+ // FIXME cannot compile
+ // iterator1 does not have these members!
+ BOOST_UBLAS_INLINE
+ const_iterator1 (const iterator1 &it):
+ container_const_reference<self_type> (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_) {
+ BOOST_UBLAS_CHECK (current_ == end_ ||
+ (current_ == 0 && it1_ != it1_end_) ||
+ (current_ == 1 && it2_ != it2_end_), internal_logic ());
+ }
+
+ // Arithmetic
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator ++ () {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ BOOST_UBLAS_CHECK (it1_ != it1_end_, internal_logic ());
+ ++ it1_;
+ if (it1_ == it1_end_ && end_ == 1) {
+ it2_ = it2_begin_;
+ current_ = 1;
+ }
+ } else /* if (current_ == 1) */ {
+ BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
+ ++ it2_;
+ if (it2_ == it2_end_ && end_ == 0) {
+ it1_ = it1_begin_;
+ current_ = 0;
+ }
+ }
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator -- () {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ if (it1_ == it1_begin_ && begin_ == 1) {
+ it2_ = it2_end_;
+ BOOST_UBLAS_CHECK (it2_ != it2_begin_, internal_logic ());
+ -- it2_;
+ current_ = 1;
+ } else {
+ -- it1_;
+ }
+ } else /* if (current_ == 1) */ {
+ if (it2_ == it2_begin_ && begin_ == 0) {
+ it1_ = it1_end_;
+ BOOST_UBLAS_CHECK (it1_ != it1_begin_, internal_logic ());
+ -- it1_;
+ current_ = 0;
+ } else {
+ -- it2_;
+ }
+ }
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator += (difference_type n) {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ size_type d = (std::min) (n, it1_end_ - it1_);
+ it1_ += d;
+ n -= d;
+ if (n > 0 || (end_ == 1 && it1_ == it1_end_)) {
+ BOOST_UBLAS_CHECK (end_ == 1, external_logic ());
+ d = (std::min) (n, it2_end_ - it2_begin_);
+ it2_ = it2_begin_ + d;
+ n -= d;
+ current_ = 1;
+ }
+ } else /* if (current_ == 1) */ {
+ size_type d = (std::min) (n, it2_end_ - it2_);
+ it2_ += d;
+ n -= d;
+ if (n > 0 || (end_ == 0 && it2_ == it2_end_)) {
+ BOOST_UBLAS_CHECK (end_ == 0, external_logic ());
+ d = (std::min) (n, it1_end_ - it1_begin_);
+ it1_ = it1_begin_ + d;
+ n -= d;
+ current_ = 0;
+ }
+ }
+ BOOST_UBLAS_CHECK (n == 0, external_logic ());
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 &operator -= (difference_type n) {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ size_type d = (std::min) (n, it1_ - it1_begin_);
+ it1_ -= d;
+ n -= d;
+ if (n > 0) {
+ BOOST_UBLAS_CHECK (end_ == 1, external_logic ());
+ d = (std::min) (n, it2_end_ - it2_begin_);
+ it2_ = it2_end_ - d;
+ n -= d;
+ current_ = 1;
+ }
+ } 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 cbegin () const {
+ return begin ();
+ }
+ 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_iterator2 cend () const {
+ return end ();
+ }
+ 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 crbegin () const {
+ return rbegin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator2 rend () const {
+ return const_reverse_iterator2 (begin ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator2 crend () const {
+ return rend ();
+ }
+#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 cbegin1 () const {
+ return begin1 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 end1 () const {
+ return find1 (0, size1 (), 0);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator1 cend1 () const {
+ return end1 ();
+ }
+
+#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
+ const_iterator2 (const self_type &m, int begin, int end,
+ const const_subiterator1_type &it1_begin, const const_subiterator1_type &it1_end,
+ const const_subiterator2_type &it2_begin, const const_subiterator2_type &it2_end):
+ container_const_reference<self_type> (m),
+ begin_ (begin), end_ (end), current_ (begin),
+ it1_begin_ (it1_begin), it1_end_ (it1_end), it1_ (it1_begin_),
+ it2_begin_ (it2_begin), it2_end_ (it2_end), it2_ (it2_begin_) {
+ if (current_ == 0 && it1_ == it1_end_)
+ current_ = 1;
+ if (current_ == 1 && it2_ == it2_end_)
+ current_ = 0;
+ if ((current_ == 0 && it1_ == it1_end_) ||
+ (current_ == 1 && it2_ == it2_end_))
+ current_ = end_;
+ BOOST_UBLAS_CHECK (current_ == end_ ||
+ (current_ == 0 && it1_ != it1_end_) ||
+ (current_ == 1 && it2_ != it2_end_), internal_logic ());
+ }
+ // FIXME cannot compiler
+ // iterator2 does not have these members!
+ BOOST_UBLAS_INLINE
+ const_iterator2 (const iterator2 &it):
+ container_const_reference<self_type> (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_) {
+ BOOST_UBLAS_CHECK (current_ == end_ ||
+ (current_ == 0 && it1_ != it1_end_) ||
+ (current_ == 1 && it2_ != it2_end_), internal_logic ());
+ }
+
+ // Arithmetic
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator ++ () {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ BOOST_UBLAS_CHECK (it1_ != it1_end_, internal_logic ());
+ ++ it1_;
+ if (it1_ == it1_end_ && end_ == 1) {
+ it2_ = it2_begin_;
+ current_ = 1;
+ }
+ } else /* if (current_ == 1) */ {
+ BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
+ ++ it2_;
+ if (it2_ == it2_end_ && end_ == 0) {
+ it1_ = it1_begin_;
+ current_ = 0;
+ }
+ }
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator -- () {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ if (it1_ == it1_begin_ && begin_ == 1) {
+ it2_ = it2_end_;
+ BOOST_UBLAS_CHECK (it2_ != it2_begin_, internal_logic ());
+ -- it2_;
+ current_ = 1;
+ } else {
+ -- it1_;
+ }
+ } else /* if (current_ == 1) */ {
+ if (it2_ == it2_begin_ && begin_ == 0) {
+ it1_ = it1_end_;
+ BOOST_UBLAS_CHECK (it1_ != it1_begin_, internal_logic ());
+ -- it1_;
+ current_ = 0;
+ } else {
+ -- it2_;
+ }
+ }
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator += (difference_type n) {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ size_type d = (std::min) (n, it1_end_ - it1_);
+ it1_ += d;
+ n -= d;
+ if (n > 0 || (end_ == 1 && it1_ == it1_end_)) {
+ BOOST_UBLAS_CHECK (end_ == 1, external_logic ());
+ d = (std::min) (n, it2_end_ - it2_begin_);
+ it2_ = it2_begin_ + d;
+ n -= d;
+ current_ = 1;
+ }
+ } else /* if (current_ == 1) */ {
+ size_type d = (std::min) (n, it2_end_ - it2_);
+ it2_ += d;
+ n -= d;
+ if (n > 0 || (end_ == 0 && it2_ == it2_end_)) {
+ BOOST_UBLAS_CHECK (end_ == 0, external_logic ());
+ d = (std::min) (n, it1_end_ - it1_begin_);
+ it1_ = it1_begin_ + d;
+ n -= d;
+ current_ = 0;
+ }
+ }
+ BOOST_UBLAS_CHECK (n == 0, external_logic ());
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator -= (difference_type n) {
+ BOOST_UBLAS_CHECK (current_ == 0 || current_ == 1, internal_logic ());
+ if (current_ == 0) {
+ size_type d = (std::min) (n, it1_ - it1_begin_);
+ it1_ -= d;
+ n -= d;
+ if (n > 0) {
+ BOOST_UBLAS_CHECK (end_ == 1, external_logic ());
+ d = (std::min) (n, it2_end_ - it2_begin_);
+ it2_ = it2_end_ - d;
+ n -= d;
+ current_ = 1;
+ }
+ } 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_iterator2 &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_iterator1 begin () const {
+ return (*this) ().find1 (1, 0, index2 ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator1 cbegin () const {
+ return begin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator1 end () const {
+ return (*this) ().find1 (1, (*this) ().size1 (), index2 ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_iterator1 cend () const {
+ return end ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 rbegin () const {
+ return const_reverse_iterator1 (end ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 crbegin () const {
+ return rbegin ();
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 rend () const {
+ return const_reverse_iterator1 (begin ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ const_reverse_iterator1 crend () const {
+ return rend ();
+ }
+#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_.index2 ();
+ } else /* if (current_ == 1) */ {
+ BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
+ return it2_.index1 ();
+ }
+ }
+ 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_.index1 ();
+ } else /* if (current_ == 1) */ {
+ BOOST_UBLAS_CHECK (it2_ != it2_end_, internal_logic ());
+ return it2_.index2 ();
+ }
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ const_iterator2 &operator = (const const_iterator2 &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_iterator2 &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_iterator2 &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_iterator2 begin2 () const {
+ return find2 (0, 0, 0);
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 cbegin2 () const {
+ return begin2 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 end2 () const {
+ return find2 (0, 0, size2 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_iterator2 cend2 () const {
+ return end2 ();
+ }
+
+#ifndef BOOST_UBLAS_USE_INDEXED_ITERATOR
+ class iterator2:
+ public container_reference<symmetric_adaptor>,
+ public random_access_iterator_base<typename iterator_restrict_traits<
+ typename subiterator2_type::iterator_category, packed_random_access_iterator_tag>::iterator_category,
+ iterator2, value_type> {
+ public:
+ typedef typename subiterator2_type::value_type value_type;
+ typedef typename subiterator2_type::difference_type difference_type;
+ typedef typename subiterator2_type::reference reference;
+ typedef typename subiterator2_type::pointer pointer;
+
+ typedef iterator1 dual_iterator_type;
+ typedef reverse_iterator1 dual_reverse_iterator_type;
+
+ // Construction and destruction
+ BOOST_UBLAS_INLINE
+ iterator2 ():
+ container_reference<self_type> (), it2_ () {}
+ BOOST_UBLAS_INLINE
+ iterator2 (self_type &m, const subiterator2_type &it2):
+ container_reference<self_type> (m), it2_ (it2) {}
+
+ // Arithmetic
+ BOOST_UBLAS_INLINE
+ iterator2 &operator ++ () {
+ ++ it2_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 &operator -- () {
+ -- it2_;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 &operator += (difference_type n) {
+ it2_ += n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 &operator -= (difference_type n) {
+ it2_ -= n;
+ return *this;
+ }
+ BOOST_UBLAS_INLINE
+ difference_type operator - (const iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ return it2_ - it.it2_;
+ }
+
+ // Dereference
+ BOOST_UBLAS_INLINE
+ reference operator * () const {
+ return *it2_;
+ }
+ 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
+ iterator1 begin () const {
+ return (*this) ().find1 (1, 0, index2 ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ iterator1 end () const {
+ return (*this) ().find1 (1, (*this) ().size1 (), index2 ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ reverse_iterator1 rbegin () const {
+ return reverse_iterator1 (end ());
+ }
+ BOOST_UBLAS_INLINE
+#ifdef BOOST_UBLAS_MSVC_NESTED_CLASS_RELATION
+ typename self_type::
+#endif
+ reverse_iterator1 rend () const {
+ return reverse_iterator1 (begin ());
+ }
+#endif
+
+ // Indices
+ BOOST_UBLAS_INLINE
+ size_type index1 () const {
+ return it2_.index1 ();
+ }
+ BOOST_UBLAS_INLINE
+ size_type index2 () const {
+ return it2_.index2 ();
+ }
+
+ // Assignment
+ BOOST_UBLAS_INLINE
+ iterator2 &operator = (const iterator2 &it) {
+ container_reference<self_type>::assign (&it ());
+ it2_ = it.it2_;
+ return *this;
+ }
+
+ // Comparison
+ BOOST_UBLAS_INLINE
+ bool operator == (const iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ return it2_ == it.it2_;
+ }
+ BOOST_UBLAS_INLINE
+ bool operator < (const iterator2 &it) const {
+ BOOST_UBLAS_CHECK (&(*this) () == &it (), external_logic ());
+ return it2_ < it.it2_;
+ }
+
+ private:
+ subiterator2_type it2_;
+
+ friend class const_iterator2;
+ };
+#endif
+
+ BOOST_UBLAS_INLINE
+ iterator2 begin2 () {
+ return find2 (0, 0, 0);
+ }
+ BOOST_UBLAS_INLINE
+ iterator2 end2 () {
+ return find2 (0, 0, size2 ());
+ }
+
+ // Reverse iterators
+
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 rbegin1 () const {
+ return const_reverse_iterator1 (end1 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 crbegin1 () const {
+ return rbegin1 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 rend1 () const {
+ return const_reverse_iterator1 (begin1 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator1 crend1 () const {
+ return rend1 ();
+ }
+
+ BOOST_UBLAS_INLINE
+ reverse_iterator1 rbegin1 () {
+ return reverse_iterator1 (end1 ());
+ }
+ BOOST_UBLAS_INLINE
+ reverse_iterator1 rend1 () {
+ return reverse_iterator1 (begin1 ());
+ }
+
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 rbegin2 () const {
+ return const_reverse_iterator2 (end2 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 crbegin2 () const {
+ return rbegin2 ();
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 rend2 () const {
+ return const_reverse_iterator2 (begin2 ());
+ }
+ BOOST_UBLAS_INLINE
+ const_reverse_iterator2 crend2 () const {
+ return rend2 ();
+ }
+
+ BOOST_UBLAS_INLINE
+ reverse_iterator2 rbegin2 () {
+ return reverse_iterator2 (end2 ());
+ }
+ BOOST_UBLAS_INLINE
+ reverse_iterator2 rend2 () {
+ return reverse_iterator2 (begin2 ());
+ }
+
+ private:
+ matrix_closure_type data_;
+ };
+
+ // Specialization for temporary_traits
+ template <class M, class TRI>
+ struct vector_temporary_traits< symmetric_adaptor<M, TRI> >
+ : vector_temporary_traits< M > {} ;
+ template <class M, class TRI>
+ struct vector_temporary_traits< const symmetric_adaptor<M, TRI> >
+ : vector_temporary_traits< M > {} ;
+
+ template <class M, class TRI>
+ struct matrix_temporary_traits< symmetric_adaptor<M, TRI> >
+ : matrix_temporary_traits< M > {} ;
+ template <class M, class TRI>
+ struct matrix_temporary_traits< const symmetric_adaptor<M, TRI> >
+ : matrix_temporary_traits< M > {} ;
+
+}}}
+
+#endif