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Double.IsInfinity Method

Returns a value indicating whether the specified number evaluates to negative or positive infinity

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

public static bool IsInfinity (
	double d
)
public static boolean IsInfinity (
	double d
)
public static function IsInfinity (
	d : double
) : boolean

Parameters

d

A double-precision floating-point number.

Return Value

true if d evaluates to PositiveInfinity or NegativeInfinity; otherwise, false.

Floating-point operations return PositiveInfinity or NegativeInfinity to signal an overflow condition.

The following code example illustrates the use of IsInfinity:

// This will return "true".
Console.WriteLine("IsInfinity(3.0 / 0) == {0}.", Double.IsInfinity(3.0 / 0) ? "true" : "false");

// This will return "true".
Console.WriteLine("IsInfinity(3.0 / 0) == {0}.", 
    (System.Double.IsInfinity((3.0 / 0))) ? "true" : "false");

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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