My package has routines for the incomplete gamma function, and the logarithmic integral is a special case of that. For the incomplete gamma function I use a combination of series, asumptotics, and continued fractions. The relevant file is Lgamma.h in the include directory of my L-function package: http://pmmac03.math.uwaterloo.ca/~mrubinst/L_function_public/CODE/
Mike On Jun 7, 4:08 pm, "William Stein" <[EMAIL PROTECTED]> wrote: > On Sat, Jun 7, 2008 at 12:54 PM, M. Yurko <[EMAIL PROTECTED]> wrote: > > > Is there any way for SAGE to calculate Li(x) (logarithmic integral) > > for complex inputs? > > I don't think that functionality is directly exposed in Sage in any easy > to use way. I've cc'd Mike Rubinstein who has probably written fast > C++ code (that is included with sage) in hopes that he will have a comment > to make. > > William --~--~---------~--~----~------------~-------~--~----~ 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/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
