This commit was manufactured by cvs2svn to create tag

'Version_1_26_0'.

[SVN r11842]

include/boost/permutation_iterator.hpp

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+// (C) Copyright Toon Knapen 2001. Permission to copy, use,
+// modify, sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+//
+
+#include <boost/iterator_adaptors.hpp>
+
+namespace boost {
+
+  template < typename IndexIterator >
+  struct permutation_iterator_policies : public default_iterator_policies
+  {
+    permutation_iterator_policies() {}
+
+    permutation_iterator_policies(IndexIterator order_it) 
+      : order_it_( order_it ) 
+    {}
+
+    template <class IteratorAdaptor>
+    typename IteratorAdaptor::reference dereference(const IteratorAdaptor& x) const
+    { return *(x.base() + *order_it_); }
+
+    template <class IteratorAdaptor>
+    void increment(IteratorAdaptor&)
+    { ++order_it_; }
+
+    template <class IteratorAdaptor>
+    void decrement(IteratorAdaptor&)
+    { --order_it_; }
+
+    template <class IteratorAdaptor, class DifferenceType>
+    void advance(IteratorAdaptor& x, DifferenceType n)
+    { std::advance( order_it_, n ); }
+
+    template <class IteratorAdaptor1, class IteratorAdaptor2>
+    typename IteratorAdaptor1::difference_type
+    distance(const IteratorAdaptor1& x, const IteratorAdaptor2& y) const
+    { return std::distance( x.policies().order_it_, y.policies().order_it_ ); }
+
+    template <class IteratorAdaptor1, class IteratorAdaptor2>
+    bool equal(const IteratorAdaptor1& x, const IteratorAdaptor2& y) const
+    { return x.policies().order_it_ == y.policies().order_it_; }
+  
+    IndexIterator order_it_;
+  };
+
+  template < typename ElementIterator, typename IndexIterator >
+  struct permutation_iterator_generator
+  {
+    typedef boost::iterator_adaptor
+    < ElementIterator,
+      permutation_iterator_policies< IndexIterator > 
+    > type;
+  };
+
+  template < class IndexIterator, class ElementIterator >
+  inline typename permutation_iterator_generator< ElementIterator, IndexIterator >::type
+  make_permutation_iterator(ElementIterator base, IndexIterator order)
+  {
+    typedef typename permutation_iterator_generator< ElementIterator, IndexIterator >::type result_t;
+    return result_t( base, order );
+  }
+
+} // namespace boost