hash.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* sdbm - ndbm work-alike hashed database library
* based on Per-Aake Larson's Dynamic Hashing algorithms. BIT 18 (1978).
* author: oz@nexus.yorku.ca
* status: public domain. keep it that way.
*
* hashing routine
*/
#include "config.h"
#include "EXTERN.h"
#include "sdbm.h"
/*
* polynomial conversion ignoring overflows
* [this seems to work remarkably well, in fact better
* then the ndbm hash function. Replace at your own risk]
* use: 65599 nice.
* 65587 even better.
*/
long
{
register unsigned long n = 0;
#ifdef DUFF
if (len > 0) {
case 0: do {
} while (--loop);
}
}
#else
while (len--)
n = *str++ + 65599 * n;
#endif
return n;
}