long double (was "strtold?")

[Schwarz, Konrad]

> >      A similar question arises as to whether we can assume 
> that float.h
> > is present.
> >   
> I think this is a reasonable assumption that hasn't proven to 
> be broken 
> in the past.  It is used by the printf/scanf families now 
> without checks.

Just as an additional data point: <float.h> must be provided by any ANSI
C compiler, whether hosted (i.e., with an own implementation of the C
standard library) or not.

Konrad Schwarz