Double.IsNegativeInfinity Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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

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

Syntax

Public Shared Function IsNegativeInfinity ( _
    d As Double _
) As Boolean
public static bool IsNegativeInfinity(
    double d
)

Parameters

Return Value

Type: System..::.Boolean
true if d evaluates to NegativeInfinity; otherwise, false.

Remarks

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

Examples

The following example illustrates the use of IsNegativeInfinity:

' This will return "True".
outputBlock.Text &= "IsNegativeInfinity(-5.0 / 0) = "
If Double.IsNegativeInfinity(-5 / 0) Then
   outputBlock.Text &= "True." & vbCrLf
Else
   outputBlock.Text &= "False." & vbCrLf
End If


...


If D > Double.MaxValue Then
   outputBlock.Text &= "Your number is bigger than a double." & vbCrLf
End If


...


' This will equal Infinity.
outputBlock.Text &= "10.0 minus NegativeInfinity equals " + (10 - Double.NegativeInfinity).ToString() + "." & vbCrLf
// This will return "true".
outputBlock.Text += String.Format("IsNegativeInfinity(-5.0 / 0) == {0}.", Double.IsNegativeInfinity(-5.0 / 0) ? "true" : "false") + "\n";


...


if (d > Double.MaxValue)
{
   outputBlock.Text += "Your number is bigger than a double." + "\n";
}


...


// This will equal Infinity.
outputBlock.Text += String.Format("10.0 minus NegativeInfinity equals {0}.", (10.0 - Double.NegativeInfinity).ToString()) + "\n";

Version Information

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Platforms

Windows Phone

See Also

Reference

Double Structure

System Namespace

IsInfinity

IsPositiveInfinity

PositiveInfinity

NegativeInfinity