次の方法で共有

  • [アーティクル]

Math.Abs Method (SByte)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Updated: September 2010

Returns the absolute value of an 8-bit signed integer.

This API is not CLS-compliant. 

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

Syntax

'Declaration
<CLSCompliantAttribute(False)> _
Public Shared Function Abs ( _
    value As SByte _
) As SByte

[CLSCompliantAttribute(false)]
public static sbyte Abs(
    sbyte value
)

Parameters

Return Value

Type: System.SByte
An 8-bit signed integer, x, such that 0 ≤ x ≤SByte.MaxValue.

Exceptions

Exception Condition
OverflowException

value equals SByte.MinValue.

Remarks

The absolute value of a signed byte is its numeric value without its sign. For example, the absolute value of both 12 and -12 is 12.

Examples

The following example uses the Math.Abs(SByte) method to get the absolute value of several SByte values.

Dim values() As SByte = {SByte.MaxValue, 98, 0, -32, SByte.MinValue}
For Each value As SByte In values
   Try
      outputBlock.Text += String.Format("Abs({0}) = {1}", value, Math.Abs(value)) & vbCrLf
   Catch e As OverflowException
      outputBlock.Text += String.Format("Unable to calculate the absolute value of {0}.", _
                        value) & vbCrLf
   End Try
Next
' The example displays the following output:
'       Abs(127) = 127
'       Abs(98) = 98
'       Abs(0) = 0
'       Abs(-32) = 32
'       Unable to calculate the absolute value of -128.

sbyte[] values = { SByte.MaxValue, 98, 0, -32, SByte.MinValue };
foreach (sbyte value in values)
{
   try
   {
      outputBlock.Text += String.Format("Abs({0}) = {1}", value, Math.Abs(value)) + "\n";
   }
   catch (OverflowException)
   {
      outputBlock.Text += String.Format("Unable to calculate the absolute value of {0}.",
                        value) + "\n";
   }
}
// The example displays the following output:
//       Abs(127) = 127
//       Abs(98) = 98
//       Abs(0) = 0
//       Abs(-32) = 32
//       Unable to calculate the absolute value of -128.

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.