NaN meaning in Information Technology ?

Answer: What is Not a Number mean?

In computing, NaN (), standing for Not a Number, is a member of a numeric data type that can be interpreted as a value that is undefined or unrepresentable, especially in floating-point arithmetic. Systematic use of NaNs was introduced by the IEEE 754 floating-point standard in 1985, along with the representation of other non-finite quantities such as infinities.

In mathematics, zero divided by zero is undefined as a real number, and is therefore represented by NaN in computing systems. The square root of a negative number is not a real number, and is therefore also represented by NaN in compliant computing systems. NaNs may also be used to represent missing values in computations.

Two separate kinds of NaNs are provided, termed quiet NaNs and signaling NaNs. Quiet NaNs are used to propagate errors resulting from invalid operations or values. Signaling NaNs can support advanced features such as mixing numerical and symbolic computation or other extensions to basic floating-point arithmetic.

reference

Full Form	Category
National Academy of Sciences of Ukraine	Academic & Science
Nacìonalʹna Akademìâ Nauk Ukraïni	Academic & Science
Nac?nal'na Akadem? Nauk Ukra?i	Academic & Science
Nadi, Suva	Airport Code
Nanosonics Ltd	Business
Nuveen New York Dividend Advantage M	Business
News Agency of Nigeria	Community
National Association of Neighborhoods	Community
North Avenue News	Community
Neighborhood Area Network	Computing
National Area Network	Computing
NanTrade	Cryptocurrency
Not A Name	General
National Action Network	General
Native Abstractions for Node	General
Not a NaN	General
Names And Nicknames	General
Networks Agents Network	General
North Atlantic Networks	General
Null And Null	General
Need A Notary	Governmental
National Alert Network Drug Safety	Governmental
No Action Necessary	Governmental
NANDGAON ROAD	Indian Railway Station
Not a Number	Information Technology
Nishnawbe-Aski Nation	International
National Academy of Neuropsychology	Medical
National and Non-National	Regional
Nadi, Fiji	Regional
North American Nationals	Sports