> Not necessarily better. Depends on the variety of IP addresses you're
> expecting, for example are they all likely to be in one of the 'local'
> ranges? (10.0.0.1 .. 10.255.255.254, 172.16.0.1 .. 172.31.255.254 or
> 192.168.0.1 .. 192.168.255.254) or global?
Unfortunately, global.
> return (ipaddress &0xff) ^
> ((ipaddress >> 8) &0xff) ^
> ((ipaddress >> 16) &0xff) ^
> ((ipaddress >> 24) &0xff); /* XOR all
> bytes of address - again, 0-255*/
I have seen this particular hash algo a couple of times. Any reason/stats
with which we can claim that this is better than the one that i suggested?
Or scenarios, where this particular algorithm would prove to be more
efficient in terms of hash collisions.
Regards,
Sylvia
>
> srand(ipaddress);
> return rand() / (RAND_MAX / 256 + 1); /* plain weird */
>
>
> --
> PJH
>
> "Consistently separating words by spaces became a general custom about
> the tenth century A.D., and lasted until about 1957, when FORTRAN
> abandoned the practice." -- Sun FORTRAN Reference Manual
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