Mailing-List: contact issues-help@commons.apache.org; run by ezmlm
Precedence: bulk
Reply-To: issues@commons.apache.org
Date: Tue, 17 May 2011 20:01:47 +0000 (UTC)
From: "Sebb (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
Message-ID: 
 <911167431.20258.1305662507598.JavaMail.tomcat@hel.zones.apache.org>
In-Reply-To: 
 <193207150.19041.1305638207366.JavaMail.tomcat@hel.zones.apache.org>
Subject: [jira] [Commented] (MATH-579) FastMath.pow much slower than
 Math.pow
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable


    [ https://issues.apache.org/jira/browse/MATH-579?page=3Dcom.atlassian.j=
ira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D130350=
12#comment-13035012 ]=20

Sebb commented on MATH-579:
---------------------------

AIUI FastMath is also targetted at faster calculation over the full range o=
f the operands.

The performance test does not (currently) use suitable ranges for all the f=
unctions.

> FastMath.pow much slower than Math.pow
> --------------------------------------
>
>                 Key: MATH-579
>                 URL: https://issues.apache.org/jira/browse/MATH-579
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.0
>         Environment: java version "1.6.0_22"
> OpenJDK Runtime Environment (IcedTea6 1.10.1) (6b22-1.10.1-0ubuntu1)
> OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode)
> java version "1.6.0_24"
> Java(TM) SE Runtime Environment (build 1.6.0_24-b07)
> Java HotSpot(TM) 64-Bit Server VM (build 19.1-b02, mixed mode)
>            Reporter: Arne Pl=C3=B6se
>
> calculating FastMath.pow(10, 0.1 / 20) is approximately 65 times slower a=
s the Math.pow() function.
> Ether this is a bug or a javadoc comment is missing.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira