/* Compute hash value for given string according to ELF standard.   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.   This file is part of the GNU C Library.   The GNU C Library is free software; you can redistribute it and/or   modify it under the terms of the GNU Lesser General Public   License as published by the Free Software Foundation; either   version 2.1 of the License, or (at your option) any later version.   The GNU C Library is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU   Lesser General Public License for more details.   You should have received a copy of the GNU Lesser General Public   License along with the GNU C Library; if not, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#ifndef _DL_HASH_H#define _DL_HASH_H	1/* This is the hashing function specified by the ELF ABI.  In the   first five operations no overflow is possible so we optimized it a   bit.  */static inline unsigned int_dl_elf_hash (const unsigned char *name){  unsigned long int hash = 0;  if (*name != '\0')    {      hash = *name++;      if (*name != '\0')	{	  hash = (hash << 4) + *name++;	  if (*name != '\0')	    {	      hash = (hash << 4) + *name++;	      if (*name != '\0')		{		  hash = (hash << 4) + *name++;		  if (*name != '\0')		    {		      hash = (hash << 4) + *name++;		      while (*name != '\0')			{			  unsigned long int hi;			  hash = (hash << 4) + *name++;			  hi = hash & 0xf0000000;			  /* The algorithm specified in the ELF ABI is as			     follows:			     if (hi != 0)			       hash ^= hi >> 24;			     hash &= ~hi;			     But the following is equivalent and a lot			     faster, especially on modern processors.  */			  hash ^= hi;			  hash ^= hi >> 24;			}		    }		}	    }	}    }  return hash;}#endif /* dl-hash.h */