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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.
*/
#ifndef POW3_HPP
#define POW3_HPP
// primary template to compute 3 to the Nth
template<int N>
class Pow3 {
public:
static int const result = 3 * Pow3<N-1>::result;
};
// full specialization to end the recursion
template<>
class Pow3<0> {
public:
static int const result = 1;
};
#endif // POW3_HPP