Parameters

value

A signed number.

Returns

A number that indicates the sign of value, as shown in the following table.

-1	value is less than zero.
0	value is equal to zero.
1	value is greater than zero.

Exceptions

Type	Reason
ArithmeticException	value is equal to double.NaN.

Remarks

Example

using System;

public class MathSignExample
{

   public static void Main()
   {

      Double d1 = Math.Sign(4.4);
      Double d2 = Math.Sign(0.0);
      Double d3 = Math.Sign(-4.5);
      Console.WriteLine("Math.Sign(4.4) returns {0}", d1);
      Console.WriteLine("Math.Sign(0.0) returns {0}", d2);
      Console.WriteLine("Math.Sign(-4.5) returns {0}", d3);

   }

}

Requirements