Double.IsInfinity Method (Double)

 

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

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

Public Shared Function IsInfinity (
	d As Double
) As Boolean

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.

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

The following code example illustrates the use of IsInfinity:

' This will return "True".
Console.Write("IsInfinity(3.0 / 0) = ")
If Double.IsPositiveInfinity(3 / 0) Then
    Console.WriteLine("True.")
Else
    Console.WriteLine("False.")
End If

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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