C# Math Sign(Double)

Description

Math Sign(Double) returns a value indicating the sign of a double-precision floating-point number.

Syntax

Math.Sign(Double) has the following syntax.

public static int Sign(
  double value
)

Parameters

Math.Sign(Double) has the following parameters.

• value - A signed number.

Returns

Math.Sign(Double) method returns A number that indicates the sign of value, as shown in the following table. Return value Meaning -1 value is less than zero. 0 value is equal to zero. 1 value is greater than zero.

Example

The following example demonstrates how to use the Sign(Double) method to determine the sign of a Double value and display it to the console.

using System;//  ww w  . ja v  a  2  s .c o m

class Sample 
{
    public static void Main() 
    {
        double   xDouble1  = 6.0;
    
        Console.WriteLine(Test(Math.Sign(xDouble1)));
    }

    public static String Test(int compare)
    {
        if (compare == 0) 
           return "equal to";
        else if (compare < 0)  
            return "less than";
        else  
            return "greater than";
    }
}

The code above generates the following result.