Double.IsInfinity(Double) Method

Definition

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

public static bool IsInfinity (double d);

Parameters

d
Double

A double-precision floating-point number.

Returns

true if d evaluates to PositiveInfinity or NegativeInfinity; otherwise, false.

Implements

Examples

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");

Remarks

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

Applies to

Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

See also