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+//  (C) Copyright Gennadiy Rozental 2011-2014.
+//  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)
+
+//  See http://www.boost.org/libs/test for the library home page.
+//
+//! @file
+//! @brief Floating point comparison tolerance manipulators
+//! 
+//! This file defines several manipulators for floating point comparison. These
+//! manipulators are intended to be used with BOOST_TEST.
+// ***************************************************************************
+
+#ifndef BOOST_TEST_TOOLS_DETAIL_TOLERANCE_MANIP_HPP_012705GER
+#define BOOST_TEST_TOOLS_DETAIL_TOLERANCE_MANIP_HPP_012705GER
+
+// Boost Test
+#include <boost/test/tools/detail/fwd.hpp>
+#include <boost/test/tools/detail/indirections.hpp>
+
+#include <boost/test/tools/fpc_tolerance.hpp>
+#include <boost/test/tools/floating_point_comparison.hpp>
+
+#include <boost/test/detail/suppress_warnings.hpp>
+
+//____________________________________________________________________________//
+
+namespace boost {
+namespace test_tools {
+namespace tt_detail {
+
+// ************************************************************************** //
+// **************           fpc tolerance manipulator          ************** //
+// ************************************************************************** //
+
+template<typename FPT>
+struct tolerance_manip {
+    explicit tolerance_manip( FPT const & tol ) : m_value( tol ) {}
+
+    FPT m_value;
+};
+
+//____________________________________________________________________________//
+
+struct tolerance_manip_delay {};
+
+template<typename FPT>
+inline tolerance_manip<FPT>
+operator%( FPT v, tolerance_manip_delay const& )
+{
+    BOOST_STATIC_ASSERT_MSG( (fpc::tolerance_based<FPT>::value), 
+                             "tolerance only for floating points" );
+
+    return tolerance_manip<FPT>( FPT(v / 100) );
+}
+
+//____________________________________________________________________________//
+
+template<typename E, typename FPT>
+inline assertion_result
+operator<<(assertion_evaluate_t<E> const& ae, tolerance_manip<FPT> const& tol)
+{
+    local_fpc_tolerance<FPT> lt( tol.m_value );
+
+    return ae.m_e.evaluate();
+}
+
+//____________________________________________________________________________//
+
+template<typename FPT>
+inline int
+operator<<( unit_test::lazy_ostream const&, tolerance_manip<FPT> const& )   { return 0; }
+
+//____________________________________________________________________________//
+
+template<typename FPT>
+inline check_type
+operator<<( assertion_type const& /*at*/, tolerance_manip<FPT> const& )         { return CHECK_BUILT_ASSERTION; }
+
+//____________________________________________________________________________//
+
+} // namespace tt_detail
+
+
+/*! Tolerance manipulator
+ *
+ * These functions return a manipulator that can be used in conjunction with BOOST_TEST
+ * in order to specify the tolerance with which floating point comparisons are made.
+ */
+template<typename FPT>
+inline tt_detail::tolerance_manip<FPT>
+tolerance( FPT v )
+{
+    BOOST_STATIC_ASSERT_MSG( (fpc::tolerance_based<FPT>::value), 
+                             "tolerance only for floating points" );
+
+    return tt_detail::tolerance_manip<FPT>( v );
+}
+
+//____________________________________________________________________________//
+
+//! @overload tolerance( FPT v )
+template<typename FPT>
+inline tt_detail::tolerance_manip<FPT>
+tolerance( fpc::percent_tolerance_t<FPT> v )
+{
+    BOOST_STATIC_ASSERT_MSG( (fpc::tolerance_based<FPT>::value), 
+                             "tolerance only for floating points" );
+
+    return tt_detail::tolerance_manip<FPT>( static_cast<FPT>(v.m_value / 100) );
+}
+
+//____________________________________________________________________________//
+
+//! @overload tolerance( FPT v )
+inline tt_detail::tolerance_manip_delay
+tolerance()
+{
+    return tt_detail::tolerance_manip_delay();
+}
+
+//____________________________________________________________________________//
+
+} // namespace test_tools
+} // namespace boost
+
+#include <boost/test/detail/enable_warnings.hpp>
+
+#endif // BOOST_TEST_TOOLS_DETAIL_TOLERANCE_MANIP_HPP_012705GER