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PICList Thread
'[PIC]: Does Hitech PIC C floating point support Na'
2000\12\15@073212 by Bob Ammerman

picon face
>
> p.s. Is it called 'NaN' because multiplying a mantissa by Infinity is
silly,
> indicating a bug?
>

NaN means 'not a number'. It is often used as the value of 'unititialized'
variables and as the result of 'illegal' function calls like sqrt(-1). Any
operation involving a NaN as an argument is supposed to return a NaN. This
allows you to perform a whole chain of computations and then check the final
result to see if anything 'bad' happened.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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