What is the Double.NaN field in C#?

Overview

In C#, the Double.NaN field represents a value that is not a number. It is constant.

Syntax

public const double NaN = NaN;
Syntax for Double.NaN method

Parameters

It requires no parameters. It is a field and a constant.

Return value

It returns a NaN field.

Example

// use System
using System;
// create class
class DoubleNaN
{
    // main method
    static void Main()
    {
      // print field value
      Console.WriteLine(Double.NaN);
      // perform arithmetic operations
      double d1 = Double.NaN + 2;
      double d2 = Double.NaN / Double.NaN;
      double d3 = 23.34 * Double.NaN;
      // print values
      Console.WriteLine(d1);
      Console.WriteLine(d2);
      Console.WriteLine(d3);
    }
}

Explanation

  • Line 10: We print the value of the Decimal.NaN field.
  • Line 13–15: We perform some arithmetic operations using the field.
  • Line 18–20: We print the output.

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