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Double.IsRealNumber(Double) Method

Definition

Determines if a value represents a real number.

public:
 static bool IsRealNumber(double value) = System::Numerics::INumberBase<double>::IsRealNumber;
public static bool IsRealNumber (double value);
static member IsRealNumber : double -> bool
Public Shared Function IsRealNumber (value As Double) As Boolean

Parameters

value
Double

The value to be checked.

Returns

true if value is a real number; otherwise, false.

Implements

Remarks

This function returns true for a complex number a + bi where b is zero.

This function checks values against the extended real number line, thus returns true for PositiveInfinity and NegativeInfinity.

Applies to