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Date: Thu, 20 Apr 2006 23:14:49 +0200
From: "Remi Vanicat" <remi.vanicat@gmail.com>
To: "Florent Monnier" <fmonnier@linux-nantes.fr.eu.org>
Subject: Re: [Caml-list] Re: Bigarray.c_layout
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2006/4/20, Florent Monnier <fmonnier@linux-nantes.fr.eu.org>:
> > > In the library I use the elements are ordered like this in the 1dim
> > > C array:
> > > 01  02  03  04  05  06
> > > 07  08  09  10  11  12
> > > 13  14  15  16  17  18
> > > 19  20  21  22  23  24
> > >
> > > but with the c_layout of big array the datas are ordered like this :
> > > 01  05  09  13  17  21
> > > 02  06  10  14  18  22
> > > 03  07  11  15  19  23
> > > 04  08  12  16  20  24
> >
> > Looks like you need to use fortran_layout, and shift the indices by 1
> > to translate between 0-based and 1-based.
>
> But it would be like the "reorder" function I use, isn't it ?

Nope, a biggarray with a fortran_layout is a biggaray with ordering as
in your first example, when c_layout is with the ordering as in you
second example.

The other difference is that with fortran_layout, array are from 1 to
n, not from 0 to n-1.