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From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
Newsgroups: comp.lang.ada
Subject: Re: Basic question on Ada multi-dimensional arrays, are they true
 (contiguous) arrays? aliasing rules?
Date: Wed, 21 Dec 2011 19:49:57 -0700
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Date: 2011-12-21T19:49:57-07:00
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On 12/21/2011 12:11 PM, John B. Matthews wrote:
>
> I'm not sure the standard [1] says exactly how array components (§3.6)
> must be stored, only that "all have the same subtype." Unchecked type
> conversion (§13.9) suggests contiguous representation of components
> for meaningful use. I'm not an implementor, so I'd welcome correction.

ARM 3.6.2 has the following Implementation Advice:

"'An implementation should normally represent multidimensional arrays in 
row-major order, consistent with the notation used for multidimensional array 
aggregates (see 4.3.3). However, if a pragma Convention(Fortran, ...) applies to 
a multidimensional array type, then column-major order should be used instead 
(see B.5, “Interfacing with Fortran”).'

-- 
Jeff Carter
"Mr. President, we must not allow a mine-shaft gap!"
Dr. Strangelove
33

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