and not offering any response as to why you aren't fixing the problem yourself by just changing one more option in your build

I was thinking more along the lines of how to write (portable) code that works on those builds of perl that were built with use64bitint, but no long doubles - rather than simply how to get the code to work on my own machine.

(As an aside, I don't know how much success I'd have in building my own perl with that change to just "one more option" - especially given that I'm on Windows.)

I'm sure I can eventually adapt my thinking and coding practices to handle these curly situations correctly.

Thanks for your thoughts.

Cheers,
Rob