Double.Equality Operator

Returns a value that indicates whether two specified Double values are equal.

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

public static bool operator ==(
	double left,
	double right
)

Parameters

left
Type: System.Double

The first value to compare.

right
Type: System.Double

The second value to compare.

Return Value

Type: System.Boolean
true if left and right are equal; otherwise, false.

The Equality method defines the equality operator for Double values.

If two Double.NaN values are tested for equality by using the equality operator, the result is false; two Double.NaN values are not considered equal. If they are tested for equality by calling the Equals method, the result is true. When you want to determine whether the value of a Double is not a number (NaN), an alternative is to call the IsNaN method.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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