not-a-number

N n

Transcription

- US Pronunciation
- US IPA

- US Pronunciation
- US IPA

Definition of not-a-number word

noun Technical meaning of not-a-number (mathematics) (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 [what else?]. NaN is encoded as a special bit pattern [what 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. 1

Just one definition for not-a-number

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Parts of speech for Not-a-number

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Not-a-number

See also

All definitions of not-a-number

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