Source : Free On-Line Dictionary of Computing

GNU BC
     
        A {GNU} version of {BC} which is self-contained and internally
        executes its own compiled code rather than acting as a
        {front-end} to {DC} like the standard {Unix} bc.
     
        Version 1.02
     
        parser (yacc), interpreter, BC math library
     
        Philip A. Nelson 
     
        FTP bc-1.02.tar.Z from a {GNU archive site}.
     
        requires:	vsprintf and vfprintf routines
     
        ports: Unix (BSD, System V, MINIX, POSIX) Superset of POSIX BC
        (P10003.2/D11), with a POSIX-only mode.