sqrt error



Using Lisp GNU Common Lisp (GCL) GCL 2.6.7 (aka GCL)
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
This is a development version of Maxima. The function bug_report()
provides bug reporting information.
(%i1) sqrt(0.0b0);
Maxima encountered a Lisp error:

 Console interrupt.

Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.
(%i2)
I tried to take sqrt of zero and it did not work.
Regards, Jim FitzSimons