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Subject: [Fwd: Re: [PHP-DEV] Other Integers for php 6]
From: enugroho@spikesource.com (Ezra Nugroho)

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Seth Price corrected me (thanks Seth!). I actually only loose one bit
for the sign.

echo (int)pow(2, 31);
> 1073741824


echo (int)pow(2, 32);
> -2147483648


That's certainly a relief. 


I don't know if there are other reasons to have unsigned integers. I
certainly don't mind having it. However it is probably a small issue
since PHP automatically cast large numbers to float anyway.

Thank you all,
Ezra 



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Date: Thu, 09 Feb 2006 13:11:34 -0600
From: Seth Price <sprice@wisc.edu>
Subject: Re: [PHP-DEV] Other Integers for php 6
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It only requires one bit to determine a sign. So a 32 bit integer can  
represent the same values of a 31 bit unsigned integer.
~Seth

On Feb 9, 2006, at 12:53 PM, Ezra Nugroho wrote:

> PHP developers,
>
> Are the requirements for PHP 6 set in stone?
>
> I saw in the minutes from the Paris meeting that a 64bit integer has
> been proposed. I am curious if it would make sense to allow  
> integers to
> be both signed and unsigned. For me personally, I would love to have
> unsigned 64bit integers.
>
> I have a task that requires bitflag operations. Having only 16 bits to
> deal with is really bad (I only care about positive int). Having 32
> positive bits in PHP 6 is certainly an improvement, but if I can  
> get all
> 64, then live would be much better.
>
> http://www.php.net/~derick/meeting-notes.html#add-a-64bit-integer
>
> Thanks,
> Ezra
>
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