On Thu, 16 Nov 2006, Lynette Sun wrote: > Hi, > > Thank you for your suggestions. But I also realized I didn't make myself > clear. I actually don't just need the integration results in R. The > integration in C is part of my C codes. I need the integration results in C. > How to realize that? Any suggestions? Thanks a lot!
That is exactly what the R API routines give you: C functions to do integration in C. Please do read the manual I mentioned, sectiom 6.9 in the version I looked at. > > Best, > Lynette > > ----- Original Message ----- From: "Lynette Sun" <[EMAIL PROTECTED]> > To: "r-help" <r-help@stat.math.ethz.ch> > Sent: Thursday, November 16, 2006 2:41 PM > Subject: [R] how to realize integration in C? > > >> Hi, all, >> >> In order to save simulation time, I need to call C in R. For the C codes, I >> need integrate certain functions ( both continous and discrete ), I wonder >> how to realize the integration in C? >> >> I try to use qsimp and trapzd subroutines from Numerical Recipes. But the >> error continues to appear:" Too many steps in routine qsimp ". Anyone has >> any idea why this happens and are there better solutions for the >> integration >> realization? Thanks a lot! >> >> Best, >> Lynette Sun >> >> ______________________________________________ >> R-help@stat.math.ethz.ch mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.