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From "Gilles (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-579) FastMath.pow much slower than Math.pow
Date Wed, 18 May 2011 20:34:47 GMT

    [ https://issues.apache.org/jira/browse/MATH-579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13035648#comment-13035648
] 

Gilles commented on MATH-579:
-----------------------------

{quote}
hosted application, in environments like [...] web servers, [...]
{quote}

>From what I've just been reading, servlets are only reloaded when their ".class" file
has changed. And they refer to this as a feature (to allow code to be modified without needing
a server restart) but also as a hack (because the usual class loader of the JVM does not do
that)...

I don't know how Eclipse or Android works but I don't see why a class would be reloaded inside
a given application. For Android, the recompilation argument doesn't even apply.


> 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 Plöse
>             Fix For: 3.0
>
>
> calculating FastMath.pow(10, 0.1 / 20) is approximately 65 times slower as the Math.pow()
function.
> Ether this is a bug or a javadoc comment is missing.

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