This documentation is archived and is not being maintained.

Double.IsPositiveInfinity Method

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

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

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



A double-precision floating-point number.

Return Value

true if d evaluates to PositiveInfinity; otherwise, false.

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

The following code example illustrates the use of IsPositiveInfinity:

// This will return S"true".
Console::WriteLine( "IsPositiveInfinity(4.0 / 0) == {0}.", Double::IsPositiveInfinity( 4.0 / zero ) ? (String^)"true" : "false" );

// This will return "true".
Console.WriteLine("IsPositiveInfinity(4.0 / 0) == {0}.", 
    (System.Double.IsPositiveInfinity((4.0 / 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