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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Statistics
Date: Wed, 09 Apr 2014 10:52:13 +0100
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Date: 2014-04-09T10:52:13+01:00
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"J-P. Rosen" <rosen@adalog.fr> writes:

> Le 09/04/2014 08:37, Simon Wright a écrit :
>> If you need asymmetric matrices, you might find Ada 2005 Math Extensions
>> useful.
>> 
>> http://sourceforge.net/projects/gnat-math-extn/
> Out of curiosity: it is presented as Gnat-specific. Why?

It used to use Interfaces.Fortran.BLAS, which was removed in GNAT GPL
2012/GCC 4.7. AdaCore reimplemented Ada.Numerics to improve portability
(to systems that don't have BLAS, LAPACK) at the expense of performance.

The body of Ada_Numerics.Generic_Arrays now says

   with Interfaces.Fortran;
   with System.Generic_Array_Operations;

and I think the latter is a GNAT unit? (of course, anyone could copy it;
it doesn't look unusual aside from a pragma Inline_Always).

Also, I don't have any other Ada 2005 compiler!


The library needs BLAS and LAPACK, easy enough on Mac OS X and Debian,
apparently a PITA on Windows.