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diff --git a/boost/integer/common_factor_ct.hpp b/boost/integer/common_factor_ct.hpp
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+//  Boost common_factor_ct.hpp header file  ----------------------------------//
+
+//  (C) Copyright Daryle Walker and Stephen Cleary 2001-2002.
+//  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 for updates, documentation, and revision history. 
+
+#ifndef BOOST_INTEGER_COMMON_FACTOR_CT_HPP
+#define BOOST_INTEGER_COMMON_FACTOR_CT_HPP
+
+#include <boost/integer_fwd.hpp>  // self include
+#include <boost/config.hpp>  // for BOOST_STATIC_CONSTANT, etc.
+
+namespace boost
+{
+namespace integer
+{
+
+//  Implementation details  --------------------------------------------------//
+
+namespace detail
+{
+    // Build GCD with Euclid's recursive algorithm
+    template < static_gcd_type Value1, static_gcd_type Value2 >
+    struct static_gcd_helper_t
+    {
+    private:
+        BOOST_STATIC_CONSTANT( static_gcd_type, new_value1 = Value2 );
+        BOOST_STATIC_CONSTANT( static_gcd_type, new_value2 = Value1 % Value2 );
+
+        #ifndef __BORLANDC__
+        #define BOOST_DETAIL_GCD_HELPER_VAL(Value) static_cast<static_gcd_type>(Value)
+        #else
+        typedef static_gcd_helper_t  self_type;
+        #define BOOST_DETAIL_GCD_HELPER_VAL(Value)  (self_type:: Value )
+        #endif
+
+        typedef static_gcd_helper_t< BOOST_DETAIL_GCD_HELPER_VAL(new_value1),
+         BOOST_DETAIL_GCD_HELPER_VAL(new_value2) >  next_step_type;
+
+        #undef BOOST_DETAIL_GCD_HELPER_VAL
+
+    public:
+        BOOST_STATIC_CONSTANT( static_gcd_type, value = next_step_type::value );
+    };
+
+    // Non-recursive case
+    template < static_gcd_type Value1 >
+    struct static_gcd_helper_t< Value1, 0UL >
+    {
+        BOOST_STATIC_CONSTANT( static_gcd_type, value = Value1 );
+    };
+
+    // Build the LCM from the GCD
+    template < static_gcd_type Value1, static_gcd_type Value2 >
+    struct static_lcm_helper_t
+    {
+        typedef static_gcd_helper_t<Value1, Value2>  gcd_type;
+
+        BOOST_STATIC_CONSTANT( static_gcd_type, value = Value1 / gcd_type::value
+         * Value2 );
+    };
+
+    // Special case for zero-GCD values
+    template < >
+    struct static_lcm_helper_t< 0UL, 0UL >
+    {
+        BOOST_STATIC_CONSTANT( static_gcd_type, value = 0UL );
+    };
+
+}  // namespace detail
+
+
+//  Compile-time greatest common divisor evaluator class declaration  --------//
+
+template < static_gcd_type Value1, static_gcd_type Value2 > struct static_gcd
+{
+    BOOST_STATIC_CONSTANT( static_gcd_type, value = (detail::static_gcd_helper_t<Value1, Value2>::value) );
+};  // boost::integer::static_gcd
+
+#if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
+template< static_gcd_type Value1, static_gcd_type Value2 > static_gcd_type const static_gcd< Value1, Value2 >::value;
+#endif
+
+//  Compile-time least common multiple evaluator class declaration  ----------//
+
+template < static_gcd_type Value1, static_gcd_type Value2 > struct static_lcm
+{
+    BOOST_STATIC_CONSTANT( static_gcd_type, value = (detail::static_lcm_helper_t<Value1, Value2>::value) );
+};  // boost::integer::static_lcm
+
+#if !defined(BOOST_NO_INCLASS_MEMBER_INITIALIZATION)
+template< static_gcd_type Value1, static_gcd_type Value2 > static_gcd_type const static_lcm< Value1, Value2 >::value;
+#endif
+
+}  // namespace integer
+}  // namespace boost
+
+
+#endif  // BOOST_INTEGER_COMMON_FACTOR_CT_HPP