DoubleDoubleIsNaN Method

public static bool IsNaN(
	DoubleDouble x
)

Public Shared Function IsNaN ( 
	x As DoubleDouble
) As Boolean

public:
static bool IsNaN(
	DoubleDouble x
)

static member IsNaN : 
        x : DoubleDouble -> bool 

Parameters

x  DoubleDouble

The value.

Return Value

By the floating point standard respect by Double and floating point types in essentially all languages and frameworks, equality testing NaN always returns false. Therefore it is necessary to have a specific method to test for not-a-number. IsNaN(Double) is that method for Double, and this is that method for DoubleDouble.

Reference