 |
Index for Section 3 |
|
 |
Alphabetical listing for R |
|
 |
Bottom of page |
|
ranhash(3)
NAME
ranhashinit, ranhash, ranlookup - access routine for the symbol table
definition file in archives
SYNOPSIS
#include <ldfcn.h>
int ranhashinit(
struct ranlib *pran,
char *pstr,
int size );
ranhash(
char *name );
struct ranlib *ranlookup(
char *name );
PARAMETERS
pran Points to an array of ranlib structures.
pstr Points to the corresponding ranlib string table (which are used
only by ranlookup).
size Specifies the size of the hash table and should be a power of 2. If
the size is not a power of 2, a 1 is returned; otherwise, a 0 is
returned.
DESCRIPTION
The ranhashinit() routine initializes static information for future use by
ranhash() and ranlookup().
The ranhash() routine, given a name, returns a hash number. It uses a
multiplicative hashing algorithm and the size argument to ranhashinit().
The ranlookup() routine looks up name in the ranlib table specified by
ranhashinit(). It uses the ranhash() routine as a starting point. Then, it
does a rehash from there. This routine returns a pointer to a valid ranlib
entry on a match. If no matches are found (the "emptiness" can be inferred
if the ran_off field is zero), the empty ranlib structure hash table should
be sparse. This routine does not expect to run out of places to look in the
table. For example, if you collide on all entries in the table, an error is
printed to stderr and a zero is returned.
AUTHOR
Mark I. Himelstein
SEE ALSO
ar(1)
 |
Index for Section 3 |
|
 |
Alphabetical listing for R |
|
 |
Top of page |
|