Plan 9 - man page for getcmap (plan9 section 9)
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getcmap - read a color map from a file
int getcmap(char *name, uchar *map)
Getcmap retrieves the named colormap and stores it in map. Usually name is the name of a
colormap file (see cmap(9.6)) or a picfile with a CMAP= attribute. If the file is not
found, it is sought in /lib/fb/cmap.
If the file cannot be found, and its name has the form gammanumber, a colormap is fabri-
cated with all three channels of its nth entry set to 255x(n/255)1/number. If the name is
just gamma, number=2.3 is assumed.
There is no putcmap, because write (in read(2)) can do the job.
cmap(9.6), picfile(9.6) rgbpix(2)
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