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Posted to issues@commons.apache.org by "Christian Hammers (JIRA)" <ji...@apache.org> on 2012/09/01 17:52:07 UTC

[jira] [Created] (CODEC-150) Remove unnecessary call to Math.abs()

Christian Hammers created CODEC-150:
---------------------------------------

             Summary: Remove unnecessary call to Math.abs()
                 Key: CODEC-150
                 URL: https://issues.apache.org/jira/browse/CODEC-150
             Project: Commons Codec
          Issue Type: Improvement
    Affects Versions: 1.6
            Reporter: Christian Hammers
            Priority: Minor
         Attachments: commons-codec-chammers-20120901-math-abs.diff

As spotted by findbugs. Diff attached and online at

https://github.com/lathspell/commons-codec/commit/ec75321169e624d1a4c44c3ab79d86fbd9e18a01

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[jira] [Commented] (CODEC-150) Remove unnecessary call to Math.abs()

Posted by "Christian Hammers (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/CODEC-150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446758#comment-13446758 ] 

Christian Hammers commented on CODEC-150:
-----------------------------------------

The intend was to get a random index i.e. a random number between 0 and numSaltChars-1.

The old code generated a random number between ca. -2^31 and +2^31, then cuts off the sign and adds modulo numSaltChars to get the intended range. It was actually buggy as abs() does not work for Integer.MIN_VALUE as findbugs explained to me.

The new code just calls Random.nextInt(numSaltChars) which gives exactly the required range and looks less ugly.

                
> Remove unnecessary call to Math.abs()
> -------------------------------------
>
>                 Key: CODEC-150
>                 URL: https://issues.apache.org/jira/browse/CODEC-150
>             Project: Commons Codec
>          Issue Type: Improvement
>    Affects Versions: 1.6
>            Reporter: Christian Hammers
>            Priority: Minor
>         Attachments: commons-codec-chammers-20120901-math-abs.diff
>
>
> As spotted by findbugs. Diff attached and online at
> https://github.com/lathspell/commons-codec/commit/ec75321169e624d1a4c44c3ab79d86fbd9e18a01

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[jira] [Resolved] (CODEC-150) Remove unnecessary call to Math.abs()

Posted by "Gary D. Gregory (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CODEC-150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary D. Gregory resolved CODEC-150.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 1.7

Thank you Christian.
                
> Remove unnecessary call to Math.abs()
> -------------------------------------
>
>                 Key: CODEC-150
>                 URL: https://issues.apache.org/jira/browse/CODEC-150
>             Project: Commons Codec
>          Issue Type: Improvement
>    Affects Versions: 1.6
>            Reporter: Christian Hammers
>            Priority: Minor
>             Fix For: 1.7
>
>         Attachments: commons-codec-chammers-20120901-math-abs.diff
>
>
> As spotted by findbugs. Diff attached and online at
> https://github.com/lathspell/commons-codec/commit/ec75321169e624d1a4c44c3ab79d86fbd9e18a01

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[jira] [Closed] (CODEC-150) Remove unnecessary call to Math.abs()

Posted by "Gary D. Gregory (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CODEC-150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary D. Gregory closed CODEC-150.
---------------------------------


Released in 1.7 today.
                
> Remove unnecessary call to Math.abs()
> -------------------------------------
>
>                 Key: CODEC-150
>                 URL: https://issues.apache.org/jira/browse/CODEC-150
>             Project: Commons Codec
>          Issue Type: Improvement
>    Affects Versions: 1.6
>            Reporter: Christian Hammers
>            Priority: Minor
>             Fix For: 1.7
>
>         Attachments: commons-codec-chammers-20120901-math-abs.diff
>
>
> As spotted by findbugs. Diff attached and online at
> https://github.com/lathspell/commons-codec/commit/ec75321169e624d1a4c44c3ab79d86fbd9e18a01

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[jira] [Updated] (CODEC-150) Remove unnecessary call to Math.abs()

Posted by "Christian Hammers (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/CODEC-150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Christian Hammers updated CODEC-150:
------------------------------------

    Attachment: commons-codec-chammers-20120901-math-abs.diff
    
> Remove unnecessary call to Math.abs()
> -------------------------------------
>
>                 Key: CODEC-150
>                 URL: https://issues.apache.org/jira/browse/CODEC-150
>             Project: Commons Codec
>          Issue Type: Improvement
>    Affects Versions: 1.6
>            Reporter: Christian Hammers
>            Priority: Minor
>         Attachments: commons-codec-chammers-20120901-math-abs.diff
>
>
> As spotted by findbugs. Diff attached and online at
> https://github.com/lathspell/commons-codec/commit/ec75321169e624d1a4c44c3ab79d86fbd9e18a01

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[jira] [Commented] (CODEC-150) Remove unnecessary call to Math.abs()

Posted by "Gary D. Gregory (JIRA)" <ji...@apache.org>.
    [ https://issues.apache.org/jira/browse/CODEC-150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13446756#comment-13446756 ] 

Gary D. Gregory commented on CODEC-150:
---------------------------------------

Why are the calls unnecessary?

Please see the latest from trunk for changes related to the FindBugs reports.
                
> Remove unnecessary call to Math.abs()
> -------------------------------------
>
>                 Key: CODEC-150
>                 URL: https://issues.apache.org/jira/browse/CODEC-150
>             Project: Commons Codec
>          Issue Type: Improvement
>    Affects Versions: 1.6
>            Reporter: Christian Hammers
>            Priority: Minor
>         Attachments: commons-codec-chammers-20120901-math-abs.diff
>
>
> As spotted by findbugs. Diff attached and online at
> https://github.com/lathspell/commons-codec/commit/ec75321169e624d1a4c44c3ab79d86fbd9e18a01

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