C# has a built-in `Math` class that provides useful mathematical functions and operations. The class has the **`Sign()` function**, which is used to return the integer indicating the sign of a specified number.

# Syntax
The function returns an integer that indicates the sign of `param`.

    Sign (type param);

where:
- `value`: is a signed number

# Return value

- `0`: Returns this if *param = 0*

  #### or

- `1`: Returns this if *param > 0*

  #### or

- `-1`: Returns this if *param < 0*

## Sign(Single)
      public static int Sign (float param);

## Sign(Sbyte)
      public static int Sign (sbyte param);

## Sign(Int64)
      public static int Sign (long param);

## Sign(Decimal)
      public static int Sign (decimal param);

## Sign(Int16)
      public static int Sign (short param);

## Sign(Double)
      public static int Sign (double param);

## Sign(Int32)
 
     public static int Sign (int param);



using System;
class HelloWorld
{
    static void Main()
    {
        System.Console.WriteLine(Math.Sign(2));

        System.Console.WriteLine(Math.Sign(-10.2563M));
        
        System.Console.WriteLine(Math.Sign(0));
    }
}

What is Math.Sign() in C#?

Determines a number's sign, returning 1 if positive, -1 if negative, and 0 if zero.

What is Math.Sign() in C#?

Syntax

Return value

or

or

Variants

Sign(Single)

Sign(Sbyte)

Sign(Int64)

Sign(Decimal)

Sign(Int16)

Sign(Double)

Sign(Int32)

Examples