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hasher.c File Reference

#include <stdio.h>


Defines
#define	UINT unsigned int
#define	SLOTS 8191
Functions
UINT	hasher (char *str)
int	main (int argc, char *argv[])

Define Documentation

#define SLOTS 8191

Definition at line 5 of file hasher.c.

Referenced by hasher().

#define UINT unsigned int

Definition at line 2 of file hasher.c.

Referenced by hasher(), and main().

Function Documentation

UINT hasher ( char * str ) [static]

Definition at line 12 of file hasher.c.

References SLOTS, and UINT.

Referenced by main().

00013 {
00014    UINT hh , jj,kk ; char *cpt ;
00015 
00016    if( str    == NULL ) return 0 ;
00017    if( str[0] == '\0' ) return 1 ;
00018 
00019    hh = 0 ;
00020    for( cpt=str ; *cpt != '\0' ; cpt++ ){
00021       jj = (65537*(UINT)(*cpt)) ; cpt++ ;
00022       kk = 17389*(UINT)(*cpt) ;
00023       hh = 13*hh + (jj << 8) + kk ;
00024       if( *cpt == '\0' ) break ;
00025    }
00026 
00027    hh =  ((hh & 0xaaaaaaaa) >> 1)   /* swap bits */
00028        | ((hh & 0x55555555) << 1) ;
00029 
00030    return (hh % SLOTS) ;
00031 }

int main	(	int	argc,
		char *	argv[]
	)

\** File : SUMA.c

Author:: : Ziad Saad Date : Thu Dec 27 16:21:01 EST 2001

Purpose :

Input paramters :

Parameters:

param

Usage : SUMA ( )

Returns :

Returns:: Support :

See also:: OpenGL prog. Guide 3rd edition , varray.c from book's sample code

Side effects :

Definition at line 33 of file hasher.c.

References argc, hasher(), and UINT.

00034 {
00035    int ii ; UINT hh ;
00036    for( ii=1 ; ii < argc ; ii++ )
00037      printf("%s -> %u\n",argv[ii],hasher(argv[ii])) ;
00038    exit(0);
00039 }

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hasher.c File Reference

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