Parameters

value

A double whose sign is to be determined.

Returns

A int indicating the sign of value.

Number	Description
-1	value < 0.
0	value == 0.
1	value > 0.

Exceptions

Type	Reason
ArithmeticException	value is equal to double.NaN.

Remarks

Documentation for this section has not yet been entered.

Example

The following example demonstrates using the Math.Sign(sbyte)(double) method.

C# 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);

   }

}

The output is

Math.Sign(4.4) returns 1
Math.Sign(0.0) returns 0
Math.Sign(-4.5) returns -1

Requirements

Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0