[fpc-devel] Broken frac functionin FPC3.1.1 / Windows x86_64

[J. Gareth Moreton]

As Sven pointed out, there are still 
faults in our functions in that they don't 
honour NaNs. It's an easy enough fix, but 
will just need an extra bit of code.

I asked about the rules regarding 
infinities, but going by what happens with 
the old floating-point stack, an exception 
is raised, so returning zero is probably 
okay, but Frac(NaN) is definitely not 
okay!