• Article

Single.IsInfinity Method

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

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

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

Syntax

'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function IsInfinity ( _
    f As Single _
) As Boolean

[SecuritySafeCriticalAttribute]
public static bool IsInfinity(
    float f
)

Parameters

  • f
    Type: System.Single
    A single-precision floating-point number.

Return Value

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

Remarks

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

Examples

The following code example demonstrates the IsInfinity method.

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

// This will return "true".
outputBlock.Text += String.Format("IsInfinity(3.0F / 0) == {0}.", Single.IsInfinity(3.0F / 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.