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Date: Fri, 17 Aug 2007 16:35:38 +0200
From: Gautier <gautier@fakeaddress.nil>
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Subject: Re: Interested about number crunching in Ada
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Date: 2007-08-17T16:35:38+02:00
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Jerry:

> Anyway, the Pascal-to-Ada converter p2ada is said to have successfully
> converted the entire Numerical Recipes into Ada.

That's right, and the "formal" translation itself is pretty easy, there is 
indeed even a batch file that does the job automatically. After comes the 
manual rework 8-{...
I just updated the file newp2ada.txt in newp2ada.zip by adding
a walk-through that was missing (after downloading nrpas13.zip, cf.
http://www.google.com/search?q=nrpas13.zip ):

     To translate the Numerical Recipes in Pascal, you need to:
       - unzip nrpas13.zip somewhere
       - copy newp2ada\goodies\tr_nrec.bat at the same place
       - run tr_nrec.bat
       - everything is translated in the Ada subdirectory;
           one .adb file per driver/demo, one .adb file with
           all recipes
       - you need manual rework to make the recipes compile,
           e.g., numerical conversions are explicit in Ada (the
           compiler will tell you where you need to add explicit
           conversions); making a well-modularised,
           consistent set of packages of the whole recipes,
           with unconstrained array types instead of the dozen of
           fixed-size Pascal array types, Ada's complex numbers and
           other nice features would be an interesting goal but a long work...
______________________________________________________________
Gautier         -- http://www.mysunrise.ch/users/gdm/index.htm
Ada programming -- http://www.mysunrise.ch/users/gdm/gsoft.htm

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