Android Question NaN

[awama]

Sometimes has a variable V1 a value NaN, which no longer goes away, although other variables V2 + V3 have the correct values for the calculation of V1. The values of V2 + V3 every second change.

How can I check if a variable has a value of NaN?

 

[Erel]

This means that you did an "illegal" math calculation (like square root of a negative number).

You can use this code:

Sub IsNan(d As Double) As Boolean
   Return d <> d
End Sub

 

[awama]

Thanks Erel,

I will check it and try it.