On Friday 24 October 2008, Fredrik Johansson wrote: > On Fri, Oct 24, 2008 at 3:53 PM, Neal Becker <[EMAIL PROTECTED]> wrote: > > I'm a noob to sympy. I need something to replace ive from cephes. iv is > > the modified bessel function of order v, while ive is the exponentially > > scaled version: exp(-|x|) I(v,x) > > > > Any suggestions? > > Replace how? What features do you need? > > Fredrik > Sorry, I'll try to describe better.
I have a calculation of probability which involves things like factorial, exponential, and also Ive. It was working fine using scipy. Now I need to extend it to larger parameter values, and the calculation blows up (involves things like 512!). I thought, why not try using sympy? It has extended precision. I noticed that sympy has some bessel functions, but not the ones I need. Since then, I've noticed an extended precision floating point module for python, clnum http://pypi.python.org/pypi/clnum/1.5 This might be of some use (both to me, and maybe to sympy) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---
