I found Maxima 5.14.0 http://maxima.sourceforge.net Using Lisp GNU Common Lisp (GCL) GCL 2.6.8 (aka GCL) (%i1) map(round, [1.b0, 1.1b1, 1.11b2, 10.b-1, 100.b-2]); (%o1) [round(1.0b0), round(1.1b1), round(1.11b2), round(1.0b0), round(1.0b0)] Is that known? Volker van Nek