Math.Abs Method (Double)
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Updated: September 2010
Returns the absolute value of a double-precision floating-point number.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function Abs ( _
value As Double _
) As Double
[SecuritySafeCriticalAttribute]
public static double Abs(
double value
)
Parameters
- value
Type: System.Double
A number that is greater than or equal to Double.MinValue, but less than or equal to Double.MaxValue.
Return Value
Type: System.Double
A double-precision floating-point number, x, such that 0 ≤ x ≤Double.MaxValue.
Remarks
The absolute value of a Double is its numeric value without its sign. For example, the absolute value of both 1.2e-03 and -1.2e03 is 1.2e03.
If value is equal to NegativeInfinity or PositiveInfinity, the return value is PositiveInfinity. If value is equal to NaN, the return value is NaN.
Examples
The following example uses the Math.Abs(Double) method to get the absolute value of several Double values.
Dim doubles() As Double = {Double.MaxValue, 0.00000000000000016354, 15.098123, 0, _
-19.069713, -1.5058E+19, Double.MinValue}
For Each value As Double In doubles
outputBlock.Text += String.Format("Abs({0}) = {1}", value, Math.Abs(value)) & vbCrLf
Next
' The example displays the following output:
' Abs(1.79769313486232E+308) = 1.79769313486232E+308
' Abs(1.6354E-16) = 1.6354E-16
' Abs(15.098123) = 15.098123
' Abs(0) = 0
' Abs(-19.069713) = 19.069713
' Abs(-1.5058E+19) = 1.5058E+19
' Abs(-1.79769313486232E+308) = 1.79769313486232E+308
double[] doubles = { Double.MaxValue, 16.354e-17, 15.098123, 0,
-19.069713, -15.058e18, Double.MinValue };
foreach (double value in doubles)
outputBlock.Text += String.Format("Abs({0}) = {1}", value, Math.Abs(value)) + "\n";
// The example displays the following output:
// Abs(1.79769313486232E+308) = 1.79769313486232E+308
// Abs(1.6354E-16) = 1.6354E-16
// Abs(15.098123) = 15.098123
// Abs(0) = 0
// Abs(-19.069713) = 19.069713
// Abs(-1.5058E+19) = 1.5058E+19
// Abs(-1.79769313486232E+308) = 1.79769313486232E+308
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
Change History
Date |
History |
Reason |
|---|---|---|
September 2010 |
Added a definition of absolute value. |
Customer feedback. |