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Double.IsInfinity Method

.NET Framework 4.5

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
)

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 code example illustrates the use of IsInfinity:

C++

// This will return "true".
Console.WriteLine("IsInfinity(3.0 / 0) == {0}.", Double.IsInfinity(3.0 / 0) ? "true" : "false");

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

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