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Re: MSB, LSB? [message #14441]

Thu, 04 March 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

David Fanning (davidf@dfanning.com) writes:

>> Height = MSB(most significant bits) * 256 + LSB(least significant bits)

Whoops! I wrote:

> height = Byte(data, 0) * 256 + Byte(data, 1)

And I probably should have written:

height = Byte(data, 1) * 256 + Byte(data, 0)

I think I wrote my test number incorrectly. :-(

You also have to pay attention to where this data was
created and what kind of machine you are working on.
For example, if this data was created on a UNIX machine
and I'm reading it on my PC, then I have to swap the
MSB and LSB when I read the data file.

OpenR, lun, filename, /Get_Lun, /Swap_If_Little_Endian

Cheers,

David

P.S. I promise in the future to get my kids off to school
BEFORE I start answering questions on the newsgroup. :-)

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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		Re: MSB, LSB? By: davidf on Thu, 04 March 1999 00:00
		Re: MSB, LSB? By: davidf on Thu, 04 March 1999 00:00

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