How to check if an object is NaN

I want to check a generic object "is equal" to NaN.

The command isnan(object) throws an error and the command isequal(object, NaN) returns false if object is NaN.

So my attempt is this rather complicated expression

isobjecteqNaN = @(object)isa(object,'double') && isscalar(object) && isnan(object);

isobjecteqNaN(NaN)

ans = logical
   1

isobjecteqNaN({NaN})

ans = logical
   0

Is there any better way to check?

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/matlab/ref/isequaln.html

[Dyuman Joshi]

How exactly will this work?

Suppose the input is {NaN}, how to check for this?