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From: Jerry <lanceboyle@qwest.net>
Newsgroups: comp.lang.ada
Subject: Re: Interested about number crunching in Ada
Date: Fri, 17 Aug 2007 02:43:01 -0700
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Date: 2007-08-17T02:43:01-07:00
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> One can always link to BLAS and linpack/lapack libraries (which are written
> in Fortran), I just googled around for ada binding to blas, here is linkhttp://topo.math.u-psud.fr/~sands/Programs/BLAS/index.html

The above binding is written for Ada 95. It seems to me that a binding
for Ada 2005 would have to be different from this one in that it would
use the official types for vectors and matrices, that is,

  type Real_Vector is array (Integer range <>) of Real'Base;
  type Real_Matrix is array (Integer range <>, Integer range <>) of
Real'Base;

as defined in Annex G.3 here http://www.adaic.com/standards/05rm/html/RM-G-3-1.html,
whereas the Ada 95 bindings at the link above use these definitions:

  type Vector is array (Positive range <>) of Float;
  pragma Convention (Fortran, Vector);

  type Matrix is array (Positive range <>, Positive range <>) of
Float;
  pragma Convention (Fortran, Matrix);

which are declared in the user's program.

(Similarly for complex vectors and matrices.)

Jerry