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 static bool IsInfinity(
	double 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.WriteLine("IsInfinity(3.0 / 0) == {0}.", Double.IsInfinity(3.0 / 0) ? "true" : "false");

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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