common.cpp revision 114402
1114402Sru/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc. 2114402Sru Written by James Clark (jjc@jclark.com) 3114402Sru 4114402SruThis file is part of groff. 5114402Sru 6114402Srugroff is free software; you can redistribute it and/or modify it under 7114402Sruthe terms of the GNU General Public License as published by the Free 8114402SruSoftware Foundation; either version 2, or (at your option) any later 9114402Sruversion. 10114402Sru 11114402Srugroff is distributed in the hope that it will be useful, but WITHOUT ANY 12114402SruWARRANTY; without even the implied warranty of MERCHANTABILITY or 13114402SruFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14114402Srufor more details. 15114402Sru 16114402SruYou should have received a copy of the GNU General Public License along 17114402Sruwith groff; see the file COPYING. If not, write to the Free Software 18114402SruFoundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19114402Sru 20114402Sruunsigned hash(const char *s, int len) 21114402Sru{ 22114402Sru#if 0 23114402Sru unsigned h = 0, g; 24114402Sru while (*s != '\0') { 25114402Sru h <<= 4; 26114402Sru h += *s++; 27114402Sru if ((g = h & 0xf0000000) != 0) { 28114402Sru h ^= g >> 24; 29114402Sru h ^= g; 30114402Sru } 31114402Sru } 32114402Sru#endif 33114402Sru unsigned h = 0; 34114402Sru while (--len >= 0) 35114402Sru h = *s++ + 65587*h; 36114402Sru return h; 37114402Sru} 38114402Sru 39