Output to Netcdf signed bytes

I have an array of signed integers in range -128 to +127. I would
like to output this to a Netcdf file as signed bytes in the same
range -128 to +127.

However the inttobyte function interprets bytes as unsigned in range
0 to +255. It seems that I need an extra step to add 256 to all
negative integers to map them to +128 to +255, before writing to Netcdf.

Is this the most straightforward way to output Netcdf signed bytes,
or am I missing something? Thank you for any advice.

Dave Allured
CU/CIRES Climate Diagnostics Center (CDC)
http://cires.colorado.edu/science/centers/cdc/
NOAA/ESRL/PSD, Climate Analysis Branch (CAB)
http://www.cdc.noaa.gov/psd1/

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Received on Sun May 31 2009 - 21:52:36 MDT