/*  rdxconv.cpp  by K.Tsuru  */
// since ver 2.18
/*****************************************
SNumber sub-function
It converts "long x" to "f[]" in radix R.
and returns "n".
x = f[n-1]*R^(n-1) + ... +f[1]*R + f[0]
*****************************************/
int rdxconv(int *f, long x, long R) {
    int i = 0;

    while(x) {
        f[i++] = x % R; x /= R;
    }
    return i;
}