[LCP]Detecting overflow of floating point calculations

[Chuck Martin]

On Tue, Jun 25, 2002 at 02:33:49PM +0100, Vincent Penquerc'h wrote:
> I don't know how portable they are (don't have my linux box
> atm), but lookup finite and isnan (libc routines).

Thanks.  That looks like what I may be looking for.  The man page says
it conforms to BSD 4.3.  Does anyone know how to make it portable?
Possibly multiple solutions with appropriate #ifdefs?

Chuck