topic Re: Float representation HP-UX&Mac, Matlab in Operating System - HP-UX

Float representation HP-UX&Mac, Matlab

Lars Bylander — Thu, 12 Oct 2000 04:41:12 GMT

I have data files in a floating format
originating from a Mac computer. The files contains binary data. Reading the data files
on a Mac using Matlab presents the correct
data values.

Reading the data file on HP-UX using matlab
returns errenous data values.

How is the representation of floating values
done on the PA-RISC and the Mac G3? Are
their any easy ways to convert data files
between different formats (scripts or commands maybe)?

Thanks/ Lars Bylander

Re: Float representation HP-UX&Mac, Matlab

Andreas Voss — Thu, 12 Oct 2000 11:34:52 GMT

Hi,

i don't know the floating format of the MAC but perhaps it is the same as INTEL that swaps the lower and higher byte.
You could try the dd command to swap the bytes back:
dd if= of= conv=swab
For more info on dd use: man dd

Perhaps this helps

Regards

Re: Float representation HP-UX&Mac, Matlab

Cheryl Griffin — Thu, 12 Oct 2000 11:38:21 GMT

Lars,
I am no floating point expert, but maybe this link will help you.

HP-UX Floating-Point Guide
http://docs.hp.com/dynaweb/hpux11/dtdcen1a/b534/@Generic__BookView