X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=edge-table.lisp;fp=edge-table.lisp;h=521c7f1e3fce458ccd01f4e92459f94d03a15dc1;hb=d92820d39c18a373611b5bfb018631cffe3e4bcd;hp=c8a648e6351756f5709a7f1773d6adabd54ea0bf;hpb=c090fe80e307758da62ceb1a5371fbf0f8fa603c;p=reversi.git

diff --git a/edge-table.lisp b/edge-table.lisp
index c8a648e..521c7f1 100644
--- a/edge-table.lisp
+++ b/edge-table.lisp
@@ -7,7 +7,7 @@
 ;;;;  Programer:      Kevin M. Rosenberg based on code by Peter Norvig
 ;;;;  Date Started:   1 Nov 2001
 ;;;;
-;;;; $Id: edge-table.lisp,v 1.5 2003/06/12 13:28:55 kevin Exp $
+;;;; $Id: edge-table.lisp,v 1.6 2003/06/17 05:47:18 kevin Exp $
 ;;;;
 ;;;; This file is Copyright (c) 2001-2003 by Kevin M. Rosenberg 
 ;;;; and Copyright (c) 1998-2002 Peter Norvig
@@ -42,11 +42,13 @@
   (init-edge-table)
   *edge-table*)
 
+(deftype edge-table () '(simple-array fixnum (*)))
+
 
 (defun map-edge-n-pieces (fn player board n squares index)
   "Call fn on all edges with n pieces."
   ;; Index counts 1 for player; 2 for opponent
-  (declare (fixnum index)
+  (declare (fixnum n index)
 	   (type player player)
 	   (type square index)
 	   (type (simple-array fixnum (100)) board)
@@ -59,7 +61,7 @@
              (sq (first squares)))
 	 (declare (fixnum index3 sq))
          (map-edge-n-pieces fn player board n (rest squares) index3)
-         (when (and (> n 0) (eql (bref board sq) empty))
+         (when (and (plusp n) (= (bref board sq) empty))
            (setf (bref board sq) player)
            (map-edge-n-pieces fn player board (- n 1) (rest squares)
                               (+ 1 index3))
@@ -119,7 +121,8 @@
 
 (defun combine-edge-moves (possibilities player)
   "Combine the best moves."
-  (declare (optimize (speed 3) (safety 0) (space 0)))
+  (declare (type player player)
+	   (optimize (speed 3) (safety 0) (space 0)))
   (let ((prob 1.0)
         (val 0.0)
         (fn (if (= player black) #'> #'<)))
@@ -196,7 +199,7 @@
       for i from 0
       sum (the fixnum 
 	    (cond
-	     ((= (bref board sq) empty) 0)
+	     ((= (bref board sq) empty) 0d0)
 	     ((= (bref board sq) player)
 	      (aref *static-edge-table* i
 		    (piece-stability board sq)))