commons-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From luc.maison...@free.fr
Subject Re: [Math] BigDecimal to power
Date Tue, 25 Jan 2011 17:27:42 GMT

----- "Andy Turner" <A.G.D.Turner@leeds.ac.uk> a écrit :

> Hi and thanks Luc,
> 
> > It may interesting to add this feature. I didn't look precisely but
> how
> > does it compare to our arbitrary precision dflp package ?
> 
> I don't see a dflp package in 2.1. Can you give me a better pointer? I
> want to compare...

It is in the subversion repository. You'll have to check it out.

Luc

> 
> If anyone knows a way of raising a BigDecimal to the power of another
> BigDecimal and getting the result correct to a specified number of
> decimal places using commons Math or anything else open source, please
> let us know.
> 
> I found http://gmplib.org/, which looks to implement some arbitrary
> rational number arithmetic
> (http://gmplib.org/manual/Rational-Arithmetic.html#Rational-Arithmetic).
> It does not look like Java, but I'm going to take a look soon
> anyway...
> 
> > Neither System.out nor System.err are allowed. Apache Commons Math
> is a
> > low level library and it can be used in many different systems. It
> can
> > be used in applications that are not connected to a console. Errors
> are
> > provided by exceptions and the application developers can do what
> they
> > want with them, printing them by temselves to System.out or
> System.err
> > for example, but also displaying a popup window in a graphical
> > environment, sending a notification through network in a
> distributed
> > environment, logging something in a file, or a database, or a system
> log ...
> >
> > Also the units tests should be able to run unattended in continuous
> > integrations systems like Gump, Confluence, Hudson or in our maven
> build
> > system... So even in tests, we don't allow output. We use only the
> > automatic output features of Junit when test fails (these outputs
> are in
> > fact already wrapped by these integration frameworks).
> 
> Thanks, that's clear, I can see a better way now :-)
> 
> Andy
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
> For additional commands, e-mail: user-help@commons.apache.org

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@commons.apache.org
For additional commands, e-mail: user-help@commons.apache.org


Mime
View raw message