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From: | David Bateman |
Subject: | Re: fortran indexing? (was Re: oct file: multiply a matrix by a vector) |
Date: | Sun, 03 Jul 2005 11:46:13 +0200 |
User-agent: | Mozilla Thunderbird 0.8 (X11/20040923) |
this is the first time that I have heard that Octave uses Fortranconventions for storage. Is there a reason for this?
The reason why fortran indexing is used is that the principal external library that octave links to is LAPACK that is itself written in fortran. The function Array<T>::fortran_vec() returns a point of typt T* to the data as it is stored in memory by octave that uses the fortran storage convention....
It seems like it would be more difficult, given that both the scripting language, and C++, indexes arrays down the column, row by row.
True for C++, but I don't see that the conventions of the scripting language impose any formality on the storage of the data within octave itself....
D. -- David Bateman address@hiddenMotorola Labs - Paris +33 1 69 35 48 04 (Ph) Parc Les Algorithmes, Commune de St Aubin +33 1 69 35 77 01 (Fax) 91193 Gif-Sur-Yvette FRANCE
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