Word:

Not-a-Number

(mathematics)Not-a-Number - (NaN) An IEEE floating point representation for the result of a numerical operation which cannot return a valid number value. A NaN can result from multiplying an infinity by a zero, or from subtracting one infinity from another NaN is encoded as a special bit pattern which would otherwise represent a floating-point number. It is used to signal error returns where other mechanisms are not convenient, e.g. a hardware floating-point unit and to allow errors to propagate through a calculation.

Similar bit patterns represent positive and negative overflow and underflow and the positive and negative infinities resulting from division by zero.

Bit patterns.

[ANSI/IEEE Std 754-1985].

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Not so neither
not suitably
not surprised
Not to be sneezed at
Not to care a rap
not to mention
Not to stand on ceremony
not traded
not very likely
Not worth a cress
Not worth a curse
Not worth a hair
Not worth a kers
Not worth a rap
Not worth the candle
not yet
-- Not-a-Number --
Not-pated
nota bene
Notabilia
Notability
Notable
Notableness
Notably
Notaeum
Notal
Notandum
Notarial
Notarially
notarise
notarize
Notary
Notary or notary public
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