Jens Axel Søgaard wrote: > soo wrote:
> I would mark "-1." as an error, if a student wrote it. I don't think
> "-1." is correct mathematical syntax.

It's correct; it matches the syntax rule

    <decimal 10> --> <digit 10>+ . <digit 10>* #* <suffix>

> Besides the -1 given to FMT is an exact number.

But you're right about the problem here.
--
Bradd W. Szonye
http://www.szonye.com/bradd