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/* The following code example is taken from the book
* "C++ Templates - The Complete Guide"
* by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002
*
* (C) Copyright David Vandevoorde and Nicolai M. Josuttis 2002.
* 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.
*/
#define MK_PROMOTION(T1,T2,Tr) \
template<> class Promotion<T1, T2> { \
public: \
typedef Tr ResultT; \
}; \
\
template<> class Promotion<T2, T1> { \
public: \
typedef Tr ResultT; \
};