Double.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 ( _
d As Double _
) As Boolean
[SecuritySafeCriticalAttribute]
public static bool IsInfinity(
double d
)
Parameters
- d
Type: System.Double
A double-precision floating-point number.
Return Value
Type: System.Boolean
true if d evaluates to PositiveInfinity or NegativeInfinity; otherwise, false.
Remarks
Floating-point operations return PositiveInfinity or NegativeInfinity to signal an overflow condition.
Examples
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
Else
outputBlock.Text &= "False." & vbCrLf
End If
// This will return "true".
outputBlock.Text += String.Format("IsInfinity(3.0 / 0) == {0}.", Double.IsInfinity(3.0 / 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.