IsNaN (LogiX node)
The IsNaN node outputs True if the input value has the special numeric value NaN, otherwise False.
When spawned from the node browser, this node accepts the float datatype by default. However, this node can be overloaded to accept float2/3/4/Q (or double typed variants) if an appropriate wire is connected to the input. Note that for vector input types the output is True if any component of the input Value is NaN.