The Free On-line Dictionary of Computing (30 December 2018):

GNU DC

   GNU Desktop Calculator.

   An interpreter for a subset of the standard Unix DC that
   handles all its operations, except the (undocumented) array
   operations.  Integration with GNU BC is being attempted.

   Version 0.2.

   FTP dc-0.2.tar.Z from your nearest GNU archive site.

   (1993-05-21)