On Dec 29, 10:22 am, Steve Holden <st...@holdenweb.com> wrote: > Raymond L. Buvel wrote: > > Since the interest is more in extended precision than in decimal > > representation, there is another module that may be of interest. > > >http://calcrpnpy.sourceforge.net/clnum.html > > > It interfaces to the Class Library for Numbers (CLN) library to provide > > both arbitrary precision floating point and complex floating point > > numbers and the usual math functions. > > > While I am the author of this module, I agree with Mark that a module > > based on MPFR would be better since you have better control over > > precision and rounding. > > > I have looked at Sage (which uses MPFR) but it is a huge integrated > > package so you can't just import what you need into one of your usual > > Python scripts. > > > I wrote the clnum module mainly to support arbitrary precision in an RPN > > calculator available from the same SourceForge project. However, it > > also works nicely as a stand-alone module. > > > At this time, there is no Windows installer available for Python 2.6 > > because I don't use Windows at home and the person who normally builds > > the installer for me is no longer interested. If someone wants to > > follow the published instructions and send me the resulting installer, I > > will put it up on SourceForge. > > I'm not sure why nobody has mentioned gmpy, except possibly because it > advertises its alpha status and doesn't have many active developers. > > regards > Steve > -- > Steve Holden +1 571 484 6266 +1 800 494 3119 > Holden Web LLC http://www.holdenweb.com/
The main reason is that it doesn't support the functions the OP wanted (sin, cos, log, etc.). This was one of the reasons I developed clnum (in addition to needing complex numbers). Ray -- http://mail.python.org/mailman/listinfo/python-list
