usr/src/cmd/spell/hash.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #ident  "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.2   */
  27 #define HASHWIDTH 27
  28 #define HASHSIZE 134217689L     /* prime under 2^HASHWIDTH */
  29 #define INDEXWIDTH 9
  30 #define INDEXSIZE (1<<INDEXWIDTH)
  31 #define NI (INDEXSIZE+1)
  32 #define ND ((25750/2) * sizeof (*table))
  33 #define BYTE 8
  34
  35 extern unsigned *table;
  36 extern int index[];     /* into dif table based on hi hash bits */
  37
  38 void    hashinit(void);
  39 int     hashlook(char *);
  40 unsigned long   hash(char *);