[MUD-Dev] caved in: Algorithms for for storing free space.

Ben Greear greear at cyberhighway.net
Sun Apr 5 19:22:14 New Zealand Standard Time 1998

On Sun, 5 Apr 1998, Chris Gray wrote:

> [Ben Greear:]
> :A binary search wouldn't be too bad, just wondering if there's
> :a better (constant) method??
> Isn't there one of those bit-twiddle methods that does that? Or can you
> only find the lowest one bit or something? Not sure where to look for
> the stuff, however. Anyone?

I thought of this..might be ok:

int pwr = 0;
int size; //this is what we want to find
int i = 0;

while ((size >> i) > 0) {

pwr should be the base of two you'll need.

This is a messy example..and might not even work...just a working


Ben Greear (greear at cyberhighway.net)  http://www.primenet.com/~greear 
Author of ScryMUD:  mud.primenet.com 4444

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