GETCMAP(9.2)                                         GETCMAP(9.2)

     NAME
          getcmap - read a color map from a file

     SYNOPSIS
          #include <libg.h>

          #include <fb.h>

          int getcmap(char *name, uchar *map)

     DESCRIPTION
          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 fabricated with all three chan-
          nels of its nth entry set to 255×(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.

     SOURCE
          /sys/src/libfb/getcmap.c

     SEE ALSO
          cmap(9.6), picfile(9.6) rgbpix(2)