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Double.IsPositiveInfinity Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

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

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

Syntax

'Declaration
Public Shared Function IsPositiveInfinity ( _
    d As Double _
) As Boolean

public static bool IsPositiveInfinity(
    double d
)

Parameters

  • d
    Type: System.Double
    A double-precision floating-point number.

Return Value

Type: System.Boolean
true if d evaluates to PositiveInfinity; otherwise, false.

Remarks

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

Examples

The following example illustrates the use of IsPositiveInfinity:

' This will return "True".
outputBlock.Text &= "IsPositiveInfinity(4.0 / 0) = "
If Double.IsPositiveInfinity(4 / 0) Then
   outputBlock.Text &= "True." & vbCrLf
Else
   outputBlock.Text &= "False." & vbCrLf
End If

// This will return "true".
outputBlock.Text += String.Format("IsPositiveInfinity(4.0 / 0) == {0}.", Double.IsPositiveInfinity(4.0 / 0) ? "true" : "false") + "\n";

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.