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isnan


Check for Not a Number entries.


Syntax


tf = isnan(M)

Input argument


M

a variable

Output argument


tf

logical: result of 'isnan'.

Description


isnan returns a logical array which is true where elements of M are "Not a Number" values.

Example


isnan(pi)
isnan(NaN)
isnan(int32(3))
X = sparse([1 2 NaN 3 0 NaN 0 4]);
R = isnan(X)

See also


isinf.

History


Version Description
1.0.0 initial version

Author


Allan CORNET

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