Single.NaN Field

May 11, 2014

Represents not a number (NaN). This field is constant.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

Public Const NaN As Single

The value of this constant is the result of dividing zero by zero.

This constant is returned when the result of an operation is undefined.

Use IsNaN to determine whether a value is not a number. It is not possible to determine whether a value is not a number by comparing it to another value equal to NaN.

The following code example demonstrates the NaN constant.

Dim zero As Single = 0

' This condition will return false.
If (0 / zero) = Single.NaN Then
   outputBlock.Text &= "0 / 0 can be tested with Single.NaN." & vbCrLf
   outputBlock.Text &= "0 / 0 cannot be tested with Single.NaN; use Single.IsNan() instead." & vbCrLf
End If

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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