From: Ajasja Ljubetič (
Date: Tue Jul 12 2011 - 12:08:12 CDT

This is more of a tcl question then a VMD one, but here it goes:

to use the mathfunctions you have to specify the whole namespace.
so you have to write

*::tcl::mathfunc::round* *arg*

More info here:

If you use a lot of math functions you can also import the namespace and
just use round.
so after running
*namespace import **::tcl::mathfunc::**
just using round should work.


On Tue, Jul 12, 2011 at 18:12, KIRTANA S <> wrote:

> How can I round off a number to nearest whole number using tcl .I
> tried using round (), whihc is not recognized .
> expr{} works . Can you tell me if I need to import any library to use
> the math in tcl.
> thank you