1994-09-04 04:03:31 +00:00
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)odds.c 8.1 (Berkeley) 5/31/93";
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#endif /* not lint */
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#include "back.h"
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odds (r1,r2,val)
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register int r1;
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int r2, val;
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{
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register int i, j;
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if (r1 == 0) {
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1995-05-30 03:37:36 +00:00
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for (i = 0; i < 6; i++)
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1994-09-04 04:03:31 +00:00
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for (j = 0; j < 6; j++)
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table[i][j] = 0;
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return;
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} else {
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r1--;
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if (r2-- == 0)
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for (i = 0; i < 6; i++) {
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table[i][r1] += val;
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table[r1][i] += val;
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}
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else {
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table[r2][r1] += val;
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table[r1][r2] += val;
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}
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}
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}
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count () {
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register int i;
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register int j;
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register int total;
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total = 0;
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for (i = 0; i < 6; i++)
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for (j = 0; j < 6; j++)
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total += table[i][j];
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return (total);
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}
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canhit (i,c)
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int i, c;
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{
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register int j, k, b;
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int a, d, diff, place, addon, menstuck;
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if (c == 0)
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odds (0,0,0);
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if (board[i] > 0) {
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a = -1;
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b = 25;
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} else {
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a = 1;
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b = 0;
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}
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place = abs (25-b-i);
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menstuck = abs (board[b]);
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for (j = b; j != i; j += a) {
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if (board[j]*a > 0) {
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diff = abs(j-i);
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addon = place+((board[j]*a > 2 || j == b)? 5: 0);
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if ((j == b && menstuck == 1) &&
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(j != b && menstuck == 0))
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for (k = 1; k < diff; k++)
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if (k < 7 && diff-k < 7 &&
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(board[i+a*k]*a >= 0 ||
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board[i+a*(diff-k)] >= 0))
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odds (k,diff-k,addon);
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if ((j == b || menstuck < 2) && diff < 7)
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odds (diff,0,addon);
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}
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if (j == b && menstuck > 1)
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break;
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}
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return (count());
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}
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