Mailing-List: contact issues-help@commons.apache.org; run by ezmlm
Precedence: bulk
Reply-To: issues@commons.apache.org
Message-ID: <1779561189.1210881415616.JavaMail.jira@brutus>
Date: Thu, 15 May 2008 12:56:55 -0700 (PDT)
From: "Luc Maisonobe (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
Subject: [jira] Resolved: (MATH-205) Mathematical error in comment for
 FastCosineTransformer
In-Reply-To: <743733295.1210778875768.JavaMail.jira@brutus>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit


     [ https://issues.apache.org/jira/browse/MATH-205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Luc Maisonobe resolved MATH-205.
--------------------------------

    Resolution: Fixed

fixed in trunk as of r656814

> Mathematical error in comment for FastCosineTransformer
> -------------------------------------------------------
>
>                 Key: MATH-205
>                 URL: https://issues.apache.org/jira/browse/MATH-205
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 1.2
>            Reporter: Roman Werpachowski
>            Priority: Trivial
>
> The formula in the comments for transform() method of FastCosineTransformer has the form:
> F_n = (1/2) [f_0 + (-1)^n f_N] + \Sum_{k=0}^{N-1} f_k \cos(\pi nk/N)
> This is incorrect and should be
> F_n = (1/2) [f_0 + (-1)^n f_N] + \Sum_{k=1}^{N-1} f_k \cos(\pi nk/N)

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.