;
; mops.scheme
;
; A Scheme implementation of the mops.pasm example program,
; for speed comparisons.
;
; Example command line:
;
;   umb-scheme mops.scheme
;
; NOTE: 1,000,000 iterations used instead of 100,000,000
; to keep thing from bogging down too much.
;
; Copyright (C) 2001-2005, Parrot Foundation.
; This program is free software. It is subject to the same
; license as Parrot.
;
; 
;

(let ((I1 0) (I2 0) (I3 1)   ; set    I2, 0
      (N1 0) (N2 0) (N4 0)   ; set    I3, 1
      (N5 0) (I4 1000000)    ; set    I4, 1000000
      (I5 0))                ;
(display "Iterations:    ")  ; print  "Iterations:    "
(display I4)                 ; print  I4
(newline)                    ; print  "\n"
                             ;
(set! I1 2)                  ; set    I1, 2
(set! I5 (* I4 I1))          ; mul    I5, I4, I1
                             ;
(display "Estimated ops: ")  ; print  "Estimated ops: "
(display I5)                 ; print  I5
(newline)                    ; print  "\n"
                             ;
(set! N1 (time))             ; time N1
                             ;
(define (loop n)             ; REDO:
  (if (not (= n 0))          ; sub    I4, I4, I3
    (loop (- n 1))))         ; if     I4, REDO
(loop I4)                    ;
                             ; DONE:
(set! N5 (time))             ; time   N5
                             ;
(set! N2 (- N5 N1))          ; sub    N2, N5, N1
                             ;
(display "Elapsed time:  ")  ; print  "Elapsed time:  "
(display N2)                 ; print  N2
(newline)                    ; print  "\n"
                             ;
(set! N1 I5)                 ; iton   N1, I5
(set! N1 (/ N1 N2))          ; div    N1, N1, N2
(set! N2 1000000.0)          ; set    N2, 1000000.0
(set! N1 (/ N1 N2))          ; div    N1, N1, N2
                             ;
(display "M op/s:        ")  ; print  "M op/s:        "
(display N1)                 ; print  N1
(newline)                    ; print  "\n"
                             ;
)                            ; end

