Hi Werner, you are right, I will try it 2015-02-03 10:22 GMT-03:00 Ben Coman <b...@openinworld.com>:
> > > On Tue, Feb 3, 2015 at 12:58 AM, p...@highoctane.be <p...@highoctane.be> > wrote: > >> On Mon, Feb 2, 2015 at 5:22 PM, Pierre CHANSON <chans.pie...@gmail.com> >> wrote: >> >>> Hi everyone, >>> I was wondering if there was a package to manipulate floats like the >>> MPFR library in C... >>> >> >> One issue with MPFR is the licensing, which is GNU. >> > > No, its LGPL (http://www.mpfr.org/). Now something I didn't know and > just read, you can even statically link an LGPL library, as long as you > provide > > >> >> I wonder if Pharo couldn't get a special licence for embedding as "MPFR has >> continuously been supported by the INRIA <http://www.inria.fr/>...". >> >> Pharo is now 32-bit and uses the floatplugin to do the actual fast math. >> >> Pharo with the 64-bit system will be able to do better and the float >> plugin will have to be rewritten anyway. >> >> But MPFR could be put into a plugin. >> >> As far as I am concerned, I'd rather get something based on GMP ( >> https://gmplib.org/) but we are there in GNU territory. Which is not >> what I want for commercial apps. >> > > > Why GMP? From the timings table it looks like GMP is missing trigonometric > functions, and that MPFR is equally as fast as GMP. > cheers -ben > > >> >> This table: http://www.mpfr.org/mpfr-current/timings.html is showing >> some LGPL licencing that may be easier to deal with. But for sure, none of >> that is MIT :-( >> >> Phil >> >> >> >>> Then I found in http://stephane.ducasse.free.fr/Web/Draft/Float.pdf >>> that using ScaledDecimal allows exact arithmetics. So I guess ScaledDecimal >>> is the best class to use for playing with 20 decimals numbers ? :) >>> >>> Thanks ! >>> >>> Pierre >>> >> >> >> >> >> >
