initial import of 386bsd-0.1 sources

1 files changed, 161 insertions, 0 deletions

diff --git a/cribbage/cards.c b/cribbage/cards.c
new file mode 100644
index 00000000..c7314128
--- /dev/null
+++ b/cribbage/cards.c
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+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)cards.c	5.5 (Berkeley) 2/28/91";
+#endif /* not lint */
+
+#include	<stdio.h>
+#include	"deck.h"
+
+
+/*
+ * initialize a deck of cards to contain one of each type
+ */
+
+makedeck( d )
+
+    CARD	d[];
+{
+	register  int		i, j, k;
+	long			time();
+
+	i = time( (long *) 0 );
+	i = ( (i&0xff) << 8 ) | ( (i >> 8)&0xff ) | 1;
+	srand( i );
+	k = 0;
+	for( i = 0; i < RANKS; i++ )  {
+	    for( j = 0; j < SUITS; j++ )  {
+		d[k].suit = j;
+		d[k++].rank = i;
+	    }
+	}
+}
+
+
+
+/*
+ * given a deck of cards, shuffle it -- i.e. randomize it
+ * see Knuth, vol. 2, page 125
+ */
+
+shuffle( d )
+
+    CARD	d[];
+{
+	register  int		j, k;
+	CARD			c;
+
+	for( j = CARDS; j > 0; --j )  {
+	    k = ( rand() >> 4 ) % j;		/* random 0 <= k < j */
+	    c = d[j - 1];			/* exchange (j - 1) and k */
+	    d[j - 1] = d[k];
+	    d[k] = c;
+	}
+}
+
+
+
+/*
+ * return true if the two cards are equal...
+ */
+
+eq( a, b )
+
+    CARD		a, b;
+{
+	return(  ( a.rank == b.rank )  &&  ( a.suit == b.suit )  );
+}
+
+
+
+/*
+ * isone returns TRUE if a is in the set of cards b
+ */
+
+isone( a, b, n )
+
+    CARD		a, b[];
+    int			n;
+{
+	register  int		i;
+
+	for( i = 0; i < n; i++ )  {
+	    if(  eq( a, b[i] )   )  return( TRUE );
+	}
+	return( FALSE );
+}
+
+
+
+/*
+ * remove the card a from the deck d of n cards
+ */
+
+cremove( a, d, n )
+
+    CARD		a, d[];
+    int			n;
+{
+	register  int		i, j;
+
+	j = 0;
+	for( i = 0; i < n; i++ )  {
+	    if(  !eq( a, d[i] )  )  d[j++] = d[i];
+	}
+	if(  j < n  )  d[j].suit = d[j].rank = EMPTY;
+}
+
+
+
+/*
+ * sorthand:
+ *	Sort a hand of n cards
+ */
+sorthand(h, n)
+register CARD		h[];
+int			n;
+{
+	register CARD		*cp, *endp;
+	CARD			c;
+
+	for (endp = &h[n]; h < endp - 1; h++)
+	    for (cp = h + 1; cp < endp; cp++)
+		if ((cp->rank < h->rank) ||
+		     (cp->rank == h->rank && cp->suit < h->suit)) {
+		    c = *h;
+		    *h = *cp;
+		    *cp = c;
+		}
+}
+