ch-08-ex-02-solution.cpp
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	/*
	* chapter-08-exercise-02.cpp
	*
	* Homebrew abs function
	*
	* Created on: Nov 1, 2012
	* Author: Radu Popescu <radu.popescu@epfl.ch>
	*/

	#include <iostream>

	template <typename T> T absolute(const T x) { return (x >= 0) ? x : -1 * x; }

	// Same thing, but computation is done at compile time. Not possible for double
	// type
	template <int x> struct absolute2 {
	const static int val = ((x >= 0) ? x : -1 * x);
	};

	int main(int argc, char *argv[]) {
	const int x1 = -2;
	const int x2 = -3;
	const double x3 = -7.39;
	std::cout << "The absolute value of " << x1 << " is " << absolute(x1)
	<< std::endl;
	std::cout << "The absolute value of " << x2 << " is " << absolute2<x2>::val
	<< " (computed at compile-time)" << std::endl;
	std::cout << "The absolute value of " << x3 << " is " << absolute(x3)
	<< std::endl;

	return 0;
	}