C# Double CompareTo(Double)

Description

Double CompareTo(Double) compares this instance to a specified double-precision floating-point number and returns an integer that indicates whether the value of this instance is less than, equal to, or greater than the value of the specified double-precision floating-point number.

Syntax

Double.CompareTo(Double) has the following syntax.

public int CompareTo(
  double value
)

Parameters

Double.CompareTo(Double) has the following parameters.

• value - A double-precision floating-point number to compare.

Returns

Double.CompareTo(Double) method returns A signed number indicating the relative values of this instance and value. Return Value Description Less than zero This instance is less than value. -or- This instance is not a number (NaN) and value is a number. Zero This instance is equal to value. -or- Both this instance and value are not a number (NaN), PositiveInfinity, or NegativeInfinity. Greater than zero This instance is greater than value. -or- This instance is a number and value is not a number (NaN).

Example

In the following example, however, the computed value turns out to be greater than the original value.

using System;/* ww w  . jav  a  2s .  co m*/

public class Example
{
   public static void Main()
   {
       double value1 = 6.185;
       double value2 = value1 * .1 / .1;
       Console.WriteLine("Comparing {0} and {1}: {2}\n",
                         value1, value2, value1.CompareTo(value2));
       Console.WriteLine("Comparing {0:R} and {1:R}: {2}",
                         value1, value2, value1.CompareTo(value2));
   }
}

The code above generates the following result.