Double.IsInfinity Method

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

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

<SecuritySafeCriticalAttribute> _
Public Shared Function IsInfinity ( _
	d As Double _
) As Boolean


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

Return Value

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

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

The following example illustrates the use of IsInfinity:

' This will return "True".
outputBlock.Text &= "IsInfinity(3.0 / 0) = "
If Double.IsPositiveInfinity(3 / 0) Then
   outputBlock.Text &= "True." & vbCrLf
   outputBlock.Text &= "False." & vbCrLf
End If


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

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

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