link iterfncs
May 2, 2001; Ralph E. Griswold
See also: fastfncs.icn, memrfncs.icn, and recrfncs.icn
This file is in the public domain.
These procedures implement commonly referenced ``text-book''
recursively defined functions, but using iteration.
acker(i, j) Ackermann's function
fib(i, j) Generalized Fibonacci (Lucas) sequence