"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3D52E135.768AB19B@gmx.de...
>
>
> Hmm, searching for 'sgn' finds "7.10.1 Float functions and macros" which
> is part of the math.inc description.  What's unclear about that?
>

As a general comment, not including a required file seems to be a common
"gotcha", and not just for new users.

Some kind of mention of this in the VFAQ might be a good idea. The problem is,
IMHO, that these things look like part of the SDL.

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