How to test to see if a double is equal to NaN in java?

How to test to see if a double is equal to NaN in java?

In Java, you can use the Double.isNaN(double value) method to test whether a double value is equal to NaN (Not-a-Number). NaN represents a special value in floating-point arithmetic that signifies an undefined or unrepresentable result.

Here's how you can use the Double.isNaN() method to test for NaN:

double myValue = // Assign your double value here if (Double.isNaN(myValue)) { System.out.println("The value is NaN."); } else { System.out.println("The value is not NaN."); }

In this code:

  • Replace myValue with the double value that you want to test.
  • The Double.isNaN(myValue) method checks if myValue is NaN. If it is NaN, the condition is true, and the code inside the if block will be executed. Otherwise, if myValue is a regular numeric value, the code inside the else block will be executed.

This approach is the recommended way to check if a double value is NaN in Java.

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