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+/*
+ Copyright (c) Marshall Clow 2008-2012.
+
+ 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)
+*/
+
+/// \file all_of.hpp
+/// \brief Test ranges to see if all elements match a value or predicate.
+/// \author Marshall Clow
+
+#ifndef BOOST_ALGORITHM_ALL_OF_HPP
+#define BOOST_ALGORITHM_ALL_OF_HPP
+
+#include <algorithm> // for std::all_of, if available
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+
+namespace boost { namespace algorithm {
+
+#if __cplusplus >= 201103L
+// Use the C++11 versions of all_of if it is available
+using std::all_of; // Section 25.2.1
+#else
+/// \fn all_of ( InputIterator first, InputIterator last, Predicate p )
+/// \return true if all elements in [first, last) satisfy the predicate 'p'
+/// \note returns true on an empty range
+///
+/// \param first The start of the input sequence
+/// \param last One past the end of the input sequence
+/// \param p A predicate for testing the elements of the sequence
+///
+/// \note This function is part of the C++2011 standard library.
+/// We will use the standard one if it is available,
+/// otherwise we have our own implementation.
+template<typename InputIterator, typename Predicate>
+bool all_of ( InputIterator first, InputIterator last, Predicate p )
+{
+ for ( ; first != last; ++first )
+ if ( !p(*first))
+ return false;
+ return true;
+}
+#endif
+
+/// \fn all_of ( const Range &r, Predicate p )
+/// \return true if all elements in the range satisfy the predicate 'p'
+/// \note returns true on an empty range
+///
+/// \param r The input range
+/// \param p A predicate for testing the elements of the range
+///
+template<typename Range, typename Predicate>
+bool all_of ( const Range &r, Predicate p )
+{
+ return boost::algorithm::all_of ( boost::begin (r), boost::end (r), p );
+}
+
+/// \fn all_of_equal ( InputIterator first, InputIterator last, const T &val )
+/// \return true if all elements in [first, last) are equal to 'val'
+/// \note returns true on an empty range
+///
+/// \param first The start of the input sequence
+/// \param last One past the end of the input sequence
+/// \param val A value to compare against
+///
+template<typename InputIterator, typename T>
+bool all_of_equal ( InputIterator first, InputIterator last, const T &val )
+{
+ for ( ; first != last; ++first )
+ if ( val != *first )
+ return false;
+ return true;
+}
+
+/// \fn all_of_equal ( const Range &r, const T &val )
+/// \return true if all elements in the range are equal to 'val'
+/// \note returns true on an empty range
+///
+/// \param r The input range
+/// \param val A value to compare against
+///
+template<typename Range, typename T>
+bool all_of_equal ( const Range &r, const T &val )
+{
+ return boost::algorithm::all_of_equal ( boost::begin (r), boost::end (r), val );
+}
+
+}} // namespace boost and algorithm
+
+#endif // BOOST_ALGORITHM_ALL_OF_HPP