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Abs Method (Int64)

Math.Abs Method (Int64)

Returns the absolute value of a 64-bit signed integer.

Namespace:  System
Assemblies:   mscorlib (in mscorlib.dll)
  System.Runtime.Extensions (in System.Runtime.Extensions.dll)

public static long Abs(
	long value
)

Parameters

value
Type: System.Int64

A number that is greater than Int64.MinValue, but less than or equal to Int64.MaxValue.

Return Value

Type: System.Int64
A 64-bit signed integer, x, such that 0 x Int64.MaxValue.

ExceptionCondition
OverflowException

value equals Int64.MinValue.

The absolute value of an Int64 is its numeric value without its sign. For example, the absolute value of both 123 and -123 is 123.

The following example uses the Abs(Int64) method to get the absolute value of a number of Int64 values.

using System;

public class Example
{
   public static void Main()
   {
      long[] values = { Int64.MaxValue, 109013, 0, -6871982, Int64.MinValue };
      foreach (long value in values)
      {
         try {
            Console.WriteLine("Abs({0}) = {1}", value, Math.Abs(value));
         }   
         catch (OverflowException) {
            Console.WriteLine("Unable to calculate the absolute value of {0}.", 
                              value);
         }
      }
   }
}
// The example displays the following output: 
//       Abs(9223372036854775807) = 9223372036854775807 
//       Abs(109013) = 109013 
//       Abs(0) = 0 
//       Abs(-6871982) = 6871982 
//       Unable to calculate the absolute value of -9223372036854775808.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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