tak_cpptmp.cpp

#include <iostream>

template<int x, int y, int z>
struct tak;

template<int x, int y, int z, bool x_lte_y>
struct _tak
{
    static const int value = tak<tak<x-1,y,z>::value,tak<y-1,z,x>::value,tak<z-1,x,y>::value>::value;
};
template<int x, int y, int z>
struct _tak<x, y, z, true>
{
    static const int value = y;
};

template<int x, int y, int z>
struct tak
{
    static const int value = _tak<x, y, z, (x <= y)>::value;
};

using namespace std;

int main(int argc, char *argv[], char *envp[])
{
    cout << tak<1,2,3>::value << endl;
    return 0;
}