You asked how order works. From the R source you can follow which C functions are executed, and since you seem familiar with C you can answer your own question.
On September 24, 2023 11:10:53 AM PDT, Jan Gorecki <j.gore...@wit.edu.pl> wrote: >Hi Jeff, > >Yes I did. My question is about R_orderVector1 which is part of public R C >api. >Should I notice something relevant in the source of R's order? > >Best >Jan > >On Sun, Sep 24, 2023, 17:27 Jeff Newmiller <jdnew...@dcn.davis.ca.us> wrote: > >> Have you read the output of >> >> order >> >> entered at the R console? >> >> >> On September 24, 2023 1:38:41 AM PDT, Jan Gorecki <j.gore...@wit.edu.pl> >> wrote: >> >Dear pkg developers, >> > >> >Are there any ways to check which sorting algorithm is being used when >> >calling `order` function? Documentation at >> >https://stat.ethz.ch/R-manual/R-devel/library/base/html/sort.html >> >says it is radix for length < 2^31 >> > >> >On the other hand, I am using R_orderVector1, passing in double float >> >smaller than 2^31. Short description of it states >> >"Fast version of 1-argument case of R_orderVector". >> >Should I expect R_orderVector1 follow the same algo as R's order()? If so >> >it should be radix as well. >> > >> > >> https://github.com/wch/r-source/blob/ed51d34ec195b89462a8531b9ef30b7b72e47204/src/main/sort.c#L1133 >> > >> >If there is no way to check sorting algo, could anyone describe which one >> >R_orderVector1 uses, and if there is easy API to use different ones from >> C? >> > >> >Best Regards, >> >Jan Gorecki >> > >> > [[alternative HTML version deleted]] >> > >> >______________________________________________ >> >R-package-devel@r-project.org mailing list >> >https://stat.ethz.ch/mailman/listinfo/r-package-devel >> >> -- >> Sent from my phone. Please excuse my brevity. >> -- Sent from my phone. Please excuse my brevity. ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
