[fpc-pascal] Array assignment, and not-a-number

Marco van de Voort marcov at stack.nl
Mon Apr 15 20:10:19 CEST 2013

In our previous episode, Jonas Maebe said:
> > with an appropriate definition of the + operator without risk that an error would try to evaluate it as an ordinary arithmetic expression?
> We don't have constant to identify a qNaN. 

>From math:

       NaN = 0.0/0.0;
       Infinity = 1.0/0.0;
       NegInfinity = -1.0/0.0;

but of course that is just notation/convention (that 0.0/0.0 as literal
evaluates to NaN), it doesn't mean all archs do.

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