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From: "Martin Krischik" <krischik@users.sourceforge.net>
Newsgroups: comp.lang.ada,comp.lang.fortran
Subject: Re: Ada vs Fortran for scientific applications
Date: 23 May 2006 00:02:18 -0700
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Gareth Owen wrote:
> Paul Van Delst <Paul.vanDelst@noaa.gov> writes:
>
> > At the risk of igniting a language war (not my intent) and/or exposing
> > my ignorance of Ada, I find the former misleading. To me, A*B suggests
> > a regular old multiplication of two arrays, rather than a matix
> > multiplication.
>
> I think assuming anything about A*B is extremely dangerous.  Just of
> the top of my head, Ada and Matlab think it means matrix
> multiplication and Fortran and Mathematica think its pointwise
> multiplication.

> It means basically nothing in C, and in C++ it means whatever the
> matrix class implementor wanted it to mean.

Honest truth: For a user defined type - in Ada - * means whatever the
programmer wants it to mean. iE. unary + is often (mis)used as a
shorthand for type conversion.

In that respect Ada is not better then any other language with user
defined operators.

But then: you can allways define a Matrix_Multiplication (...) function
as well.

Martin