Math.Abs Method (Int64)


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

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

public static long Abs(
	long 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.

Exception Condition

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}.", 
// 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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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