language-benchmarks/Interpreted/ackermann-function/ack.awk

function ackermann(m, n) {
  if (m == 0) {
    return n+1;
  }
  if (n == 0) {
    return ackermann(m-1, 1);
  }
  return ackermann(m-1, ackermann(m, n-1));
}

BEGIN {
    print ackermann(ARGV[1], ARGV[2]);
}