Also, if you set your namespace path like so: namespace path {::tcl::mathop ::tcl::mathfunc} Then you get very LISP like math operators % set x [+ 2 3 [- 5

Also, if you set your namespace path like so: namespace path {::tcl::mathop ::tcl::mathfunc} Then you get very LISP like math operators % set x [+ 2 3 [- 5 20]] -10 and math functions % set x [abs -12] 12