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Altera_Forum
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21 years ago

new user needs help with var inits..

Hello, I have a NIOS-1 design that I am having some trouble with. My tools are a bit dated, because I had to use NIOS-1 (because of the older FPGA on the board that I was forced to ue) -- S...
Altera_Forum's avatar
Altera_Forum
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21 years ago

Yes, NaN is short for "not a number", but I doubt it's occuring because of memory corruption. The string "NaN" is how the standard library formats this special floating point value, which is used to represent the outcome of a floating point calculation when the result is "not a number", such as when dividing by zero. This not a number result propagates: the result of any further floating point calculations involving NaN as an input is also NaN.

You've probably got a division by zero somewhere in your floating point expressions.