# Math.Abs Method (Double)

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
)
``````

#### 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.