From bug-octave-request at bevo dot che dot wisc dot edu  Thu Jan 29 16:10:59 1998
Subject: row/column major ordering problem
From: Michael Hohn <hohn at math dot utah dot edu>
To: bug-octave at bevo dot che dot wisc dot edu
CC: hohn at math dot utah dot edu
Date: Thu, 29 Jan 1998 15:10:53 -0700 (MST)

Hello,

This is a problem I thought fixed a long time ago, but here it it
again: 

I have a program writing files in matlab binary format, in either row
or column major order:

./a.out
Matrix: 2 by 2
row 0:    0.846186767    0.468314366 
row 1:    0.236917463     0.65696803 


In matlab:
>> load foo.mat
>> mat
mat =
    0.8462    0.4683
    0.2369    0.6570
 

Octave, version 2.0.9 (sparc-sun-solaris2.5).
octave:1> load foo.mat
octave:2> mat
mat =
 
  0.84619  0.23692
  0.46831  0.65697

Oops!! Apparently, the order flag is ignored...

Fix:
---
(from an old message):

The first thing written to a matlab binary file should be a long int
(4 bytes); it contains info of the form

... + 1000*?? + 100*ORDER + 10*?? + ...

The ORDER flag is 0 for column major order, 1 for row major.