;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; This file is part of "NOVA":  NOVA = search + COCOMO tools
; Copyright, 2008, Tim Menzies tim@menzies.us
;
; NOVA 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.
;
; NOVA 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
; a long with NOVA.  If not, see <http://www.gnu.org/licenses/>.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defun effort ()
  "Returns total development and management effort in months."
  (macrolet ((f (x) `(em2effort ',x))
	     (s (x) `(sf2effort ',x)))
    (let ((a    (! 'a))
	  (b    (! 'b))
	  (kloc (! 'kloc)))
      (* a (expt kloc (+ b (* 0.01
			      (+ (s prec) (s flex)
				 (s resl) (s team)
				 (s pmat)))))
	 (f time) (f stor) (f data) (f pvol)
	 (f ruse) (f rely) (f docu) (f acap)
	 (f pcap) (f pcon) (f aexp) (f plex)
	 (f ltex) (f tool) (f cplx) (f site)
	 (f sced)))))

(defun demo-effort1 (&optional (*db* *db*))
  "Calculates effort 10 times."
  (let (out)
    (dotimes (i 10 (sort out #'<))
      (push (demo-effort0) out))))

(defun demo-effort2 (&optional (*db* *db*))
  "Displays the distribution of 1000 effort calculations."
  (let ((d (make-dist :fuzz 2000)))
    (dotimes (i 1000)
      (dist-add (demo-effort0) d))
    (format t "Effort estimates, rounded to the nearest 2000~%")
    (distogram d :shrink 100 :lwidth 10 :rwidth 6)))

(defun demo-effort0 ()
  "Initializes the *db* to COCOMO defaults and calculates effort."
  (init-db)
  (effort))

(egs :effort
     (eg '(demo-effort1)
	 :of "calculating effort 10 times")
     (eg '(demo-effort2)
	 :of "displaying the distribution of 1000 effort calculations"))