Double.IsInfinity Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Returns a value indicating whether the specified number evaluates to negative or positive infinity
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
Public Shared Function IsInfinity ( _
d As Double _
) As Boolean
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
Windows Phone OS
Supported in: 8.1, 8.0, 7.1, 7.0
Platforms
Windows Phone