(unknown charset) [BLACKBOX] Fwd: Re: [BLACKBOX] Unsigned Integer Arithmetic

From: (unknown charset) [at]} <Robert>
Date: Sat, 2 Jun 2012 09:26:41 +0100

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-------- Original Message --------
Subject: Re: [BLACKBOX] Unsigned Integer Arithmetic
Date: Fri, 01 Jun 2012 21:54:26 +0100
From: Robert <robert.campbell_{([at]})nowhere.xy
To: Oleg N. Cher <allot{([at]})nowhere.xy


Oleg

You are welcome to use these Cardinals modules with your version of BlackBox.

I am just glad someone appreciates the work.


I am making lot of changes to the Multi Subsystem at the moment - many of the
other modules are being replaced by versions which use these Cardinals modules
to implement base 2^32 arbitrary precision which is significantly more efficient
than the current base 2^15 versions. So I would prefer not to change the CPC
subsystem until I can update it all consistently.


I am just leaving for a summer holiday, so if you do write again don't worry if
I am slow to reply.


Regards

Robert


On 01/06/2012 12:31, Oleg N. Cher wrote:
> Dear Robert,
>
> I have looked your modules for work with unsigned types.
> Looks enough fundamental. Yes, I like this! You've shown me way how to add
> unsigned arithmetic to BlackBox simply and portable. If you want, we will send a
> proposition to Helmut Zinn to update your subsystem Multi by adding the modules
> MultiCardAsm and MultiCardinals from your post. If you like this idea.
>
> Even after I made changes to Ofront translator, I began to think to the adding
> of unsigned arithmetic, not by rewriting the translator, but by adding a module
> that implements operations on unsigned types of signs Oberon. By using a C
> preprocessor, I could realize the unsigned operations without overhead. Of
> course, in the second case, the operation will be written more cumbersome, ie
> instead of c: = a * b to c: = U.Mult (a, b), which deploys the preprocessor is
> not in a procedure call, and the equivalent of an unsigned multiplication in C
> language. The your method is more acceptable, because more compatible (on
> interface level-layer) and more traditional for Oberons.
>
> Also I've question to you. Can you allow me to add this modules to my own fork
> of BlackBox that is distributed under BB license? Of course, all documents will
> be added completely without any changes. And with saving of your original
> copyrights. Thank you!
>
> --
> Oleg N. Cher
> http://zx.oberon2.ru/
>
>
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Received on Sat Jun 02 2012 - 10:26:41 UTC