RE : Negative numbers

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From: alobo@ija.csic.es (Agustin Lobo)
Subject:grass negative numbers?
Date: 9 Oct 95 18:10:22 GMT
Message-ID:<120*alobo@ija.csic.es>

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How is grass writing negative numbers? I've made a C program
to import uncompressed binary cell raster files and I get
wrong results with negatives, even if I read them as
long integers. I get numbers like :

...

Agus

I haven't my documentation here in my office - I forgot it at home -,
but as far as i remember, Grass doesn't use "two's complement" as many
computers/softwares. It just uses the first bit as a flag, and the others
bits codes the number as a positive number. For more info, e-mail me or post
another message in the list, i'll search info and ref in the documentation.

                        Hope this helps you,

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