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Single. IsNaN Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation . ]
Returns a value indicating whether the specified number evaluates to not a number (NaN ).
Namespace:
System
Assembly:
mscorlib (in mscorlib.dll)
'Declaration
Public Shared Function IsNaN ( _
f As Single _
) As Boolean
Parameters f Type: System. Single A single-precision floating-point number. Return Value Type:
System. Boolean true if f evaluates to not a number (NaN ); otherwise, false .Floating-point operations return NaN to signal that that result of the operation is undefined. For example, dividing 0.0 by 0.0 results in NaN .
The following code example demonstrates the IsNaN method.
' This will return true.
If Single .IsNaN(0 / zero) Then
outputBlock.Text &= "Single.IsNan() can determine whether a value is not-a-number." & vbCrLf
End If
Windows Phone OS Supported in: 8.1, 8.0, 7.1, 7.0