diff options
Diffstat (limited to 'intl/hash-string.h')
| -rw-r--r-- | intl/hash-string.h | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/intl/hash-string.h b/intl/hash-string.h index e846b50..ef1f448 100644 --- a/intl/hash-string.h +++ b/intl/hash-string.h @@ -1,5 +1,5 @@ /* hash-string - Implements a string hashing function. - Copyright (C) 1995 Software Foundation, Inc. + Copyright (C) 1995 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -21,22 +21,28 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* @@ end of prolog @@ */ -#ifndef BITSPERBYTE -# define BITSPERBYTE 8 +#ifndef PARAMS +# if __STDC__ +# define PARAMS(Args) Args +# else +# define PARAMS(Args) () +# endif #endif -#ifndef LONGBITS -# define LONGBITS (sizeof (long) * BITSPERBYTE) -#endif /* LONGBITS */ +/* We assume to have `unsigned long int' value with at least 32 bits. */ +#define HASHWORDBITS 32 + /* Defines the so called `hashpjw' function by P.J. Weinberger [see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools, - 1986, 1987 Bell Telephone Laboratories, Inc.] */ + 1986, 1987 Bell Telephone Laboratories, Inc.] */ +static unsigned long hash_string PARAMS ((const char *__str_param)); + static inline unsigned long hash_string (str_param) const char *str_param; { - unsigned long hval, g; + unsigned long int hval, g; const char *str = str_param; /* Compute the hash value for the given string. */ @@ -45,10 +51,10 @@ hash_string (str_param) { hval <<= 4; hval += (unsigned long) *str++; - g = hval & ((unsigned long) 0xf << (LONGBITS - 4)); + g = hval & ((unsigned long) 0xf << (HASHWORDBITS - 4)); if (g != 0) { - hval ^= g >> (LONGBITS - 8); + hval ^= g >> (HASHWORDBITS - 8); hval ^= g; } } |