BadComparison

Avoid equality comparisons with Double.NaN - these are likely to be logic errors.

This rule is defined by the following XPath expression:

                  
//EqualityExpression[@Image='==']
 /PrimaryExpression/PrimaryPrefix
 /Name[@Image='Double.NaN' or @Image='Float.NaN']
                  
              

Example:

                
  
public class Bar {
 boolean x = (y == Double.NaN);
}