[jira] [Updated] (LUCENE-7194) Ban Math.toRadians/toDegrees and remove all usages of it

["Karl Wright (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karl Wright updated LUCENE-7194:
--------------------------------
    Attachment: LUCENE-7194.patch

Here's the patch

> Ban Math.toRadians/toDegrees and remove all usages of it
> --------------------------------------------------------
>
>                 Key: LUCENE-7194
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7194
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Robert Muir
>            Assignee: Karl Wright
>         Attachments: LUCENE-7194.patch
>
>
> The result of these methods is unreliable and changes across jvm versions: we cannot use these methods.
> The following program prints 0.7722082215479366 on previous versions of java but 0.7722082215479367 on java 9 because Math.toRadians is no longer doing the same thing:
> {code}
> public class test {
>   public static void main(String args[]) throws Exception {
>     System.out.println(Math.toRadians(44.244272));
>   }
> }
> {code}
> This is because of https://bugs.openjdk.java.net/browse/JDK-4477961. 
> I am not really sure its a bug, because the method says that the conversion is "generally inexact". 



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