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| | ;; -*- lexical-binding: t; -*-
;; Copyright (C) 2019 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Fibonacci sequence tail recursive algo.
(require 'cl-lib)
(defun elb-fibn-tc (a b count)
(if (= count 0)
b
(elb-fibn-tc (+ a b) a (- count 1))))
(defun elb-fibn-tc-entry ()
(cl-loop repeat 1000000
do (elb-fibn-tc 1 0 80)))
(provide 'fibn-tc)
|