Re: Bit-twiddling complaint about bidi categories

From: Mark Davis (
Date: Fri May 05 2000 - 10:53:27 EDT

You actually don't. You can store exactly the same number of bits, and use a range check to detect these characters.


John O'Conner wrote:

> In addition to my earlier questions about PDF, RLE, LRE, RLO, and LRO, I
> also have a complaint...
> Not only do I not understand why these properties are necessary, but I
> have to allocate another bit of memory to accomodate them in my
> character property database. Without these I could have continued to use
> 4 bits for 16 possible bidi I need 5 bits for these
> additional properties that have only 5 characters among them. What a
> waste of a bit! Surely other bit-twiddlers can show some sympathy. :)
> -- John O'Conner

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