floating point - nan initializers

[Walter Bright]

"Derek Parnell" <derek at psych.ward> wrote in message 
news:op.s5ahr0v26b8z09 at ginger.vic.bigpond.net.au...
> I work with a language (Euphoria) in which all variables are set to 
> uninitialized and it doesn't allow you to use an uninitialized variable.

That appears to implement in software my idea that memory should have a 
parallel set of bits saying whether each location is initialized or not. The 
trouble with doing it in software is it about halves the execution speed.