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+/*
+ *  Copyright (c) 2001-2003 Joel de Guzman
+ *
+ *  Use, modification and distribution is subject to 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)
+ */
+#ifndef _BOOST_UBLAS_NUMERICTYPE_DEDUCTION_
+#define _BOOST_UBLAS_NUMERICTYPE_DEDUCTION_
+
+// See original in boost-sandbox/boost/utility/type_deduction.hpp for comments
+
+#include <boost/mpl/vector/vector20.hpp>
+#include <boost/mpl/at.hpp>
+#include <boost/mpl/or.hpp>
+#include <boost/mpl/identity.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/utility/enable_if.hpp>
+
+namespace boost { namespace numeric { namespace ublas {
+
+struct error_cant_deduce_type {};
+
+  namespace type_deduction_detail
+  {
+    typedef char(&bool_value_type)[1];
+    typedef char(&float_value_type)[2];
+    typedef char(&double_value_type)[3];
+    typedef char(&long_double_value_type)[4];
+    typedef char(&char_value_type)[5];
+    typedef char(&schar_value_type)[6];
+    typedef char(&uchar_value_type)[7];
+    typedef char(&short_value_type)[8];
+    typedef char(&ushort_value_type)[9];
+    typedef char(&int_value_type)[10];
+    typedef char(&uint_value_type)[11];
+    typedef char(&long_value_type)[12];
+    typedef char(&ulong_value_type)[13];
+    
+    typedef char(&x_value_type)[14];
+    typedef char(&y_value_type)[15];
+
+    typedef char(&cant_deduce_type)[16];
+
+    template <typename T, typename PlainT = typename remove_cv<T>::type>
+    struct is_basic
+        : mpl::or_<
+          typename mpl::or_<
+              is_same<PlainT, bool>
+            , is_same<PlainT, float>
+            , is_same<PlainT, double>
+            , is_same<PlainT, long double>
+          > ::type,
+          typename mpl::or_<
+              is_same<PlainT, char>
+            , is_same<PlainT, signed char>
+            , is_same<PlainT, unsigned char>
+            , is_same<PlainT, short>
+            , is_same<PlainT, unsigned short>
+            > ::type,
+          typename mpl::or_<
+              is_same<PlainT, int>
+            , is_same<PlainT, unsigned int>
+            , is_same<PlainT, long>
+            , is_same<PlainT, unsigned long>
+            > ::type
+        > {};
+
+    struct asymmetric;
+
+    template <typename X, typename Y>
+    cant_deduce_type
+    test(...); // The black hole !!!
+
+    template <typename X, typename Y>
+    bool_value_type
+    test(bool const&);
+
+    template <typename X, typename Y>
+    float_value_type
+    test(float const&);
+    
+    template <typename X, typename Y>
+    double_value_type
+    test(double const&);
+
+    template <typename X, typename Y>
+    long_double_value_type
+    test(long double const&);
+
+    template <typename X, typename Y>
+    char_value_type
+    test(char const&);
+
+    template <typename X, typename Y>
+    schar_value_type
+    test(signed char const&);
+
+    template <typename X, typename Y>
+    uchar_value_type
+    test(unsigned char const&);
+
+    template <typename X, typename Y>
+    short_value_type
+    test(short const&);
+
+    template <typename X, typename Y>
+    ushort_value_type
+    test(unsigned short const&);
+
+    template <typename X, typename Y>
+    int_value_type
+    test(int const&);
+
+    template <typename X, typename Y>
+    uint_value_type
+    test(unsigned int const&);
+
+    template <typename X, typename Y>
+    long_value_type
+    test(long const&);
+
+    template <typename X, typename Y>
+    ulong_value_type
+    test(unsigned long const&);
+
+    template <typename X, typename Y>
+    typename disable_if<
+        is_basic<X>, x_value_type
+    >::type
+    test(X const&);
+
+    template <typename X, typename Y>
+    typename disable_if<
+        mpl::or_<
+            is_basic<Y>
+          , is_same<Y, asymmetric>
+          , is_same<const X, const Y>
+        >
+      , y_value_type
+    >::type
+    test(Y const&);
+
+    template <typename X, typename Y>
+    struct base_result_of
+    {
+        typedef typename remove_cv<X>::type x_type;
+        typedef typename remove_cv<Y>::type y_type;
+
+        typedef mpl::vector16<
+            mpl::identity<bool>
+          , mpl::identity<float>
+          , mpl::identity<double>
+          , mpl::identity<long double>
+          , mpl::identity<char>
+          , mpl::identity<signed char>
+          , mpl::identity<unsigned char>
+          , mpl::identity<short>
+          , mpl::identity<unsigned short>
+          , mpl::identity<int>
+          , mpl::identity<unsigned int>
+          , mpl::identity<long>
+          , mpl::identity<unsigned long>
+          , mpl::identity<x_type>
+          , mpl::identity<y_type>
+          , mpl::identity<error_cant_deduce_type>
+        >
+        types;
+    };
+
+}}} } // namespace boost::numeric::ublas ::type_deduction_detail
+
+#endif