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Double.IsInfinity Method

April 12, 2014

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.

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

The following example illustrates the use of IsInfinity:


// This will return "true".
outputBlock.Text += String.Format("IsInfinity(3.0 / 0) == {0}.", Double.IsInfinity(3.0 / 0) ? "true" : "false") + "\n";


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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