R-admin recommends -std=gnu99, which will solve this. Given that long and long long mean different things on different platforms, I would endorse the recommendation to use a C99 explicit type.
On Mon, 24 Apr 2006, Robin Hankin wrote: > Hi. > > R-exts, section 1.7, discusses the passing of long long integers > between R and C. > I want to use unsigned long long integers, but > I only need them inside a C function. > > I have a function that maps the nonnegative integers to the positive > integers. > The function is defined by a delicate recursive algorithm that is exact > for integer arithmetic, but wildly incorrect for doubles. > > The function increases rapidly with its argument, and ordinary integers > are not enough to illustrate my point (in a paper I am writing). > > > The C function is as follows: > > > > void numbparts_longint(int *n, double *p){/* p(1)...p(n) calculated */ > int i,s,f,r; > unsigned long long int *ip; > unsigned long long int pp[*n]; > > /* COMPLICATED RECURSIVE ALGORITHM IN WHICH PP IS FILLED SNIPPED */ > > for(i=0 ; i < *n ; i++){ > p[i] = (double) pp[i]; > } > } > > > > This compiles fine with "gcc -Wall" (and illustrates my point!) > but R CMD check reports > > > partitions.c:180: warning: ISO C90 does not support 'long long' > partitions.c:181: warning: ISO C90 does not support 'long long' > > > I really want long long integers here. What are my options? > [the same happens with signed long long integers] > > > > > > -- > Robin Hankin > Uncertainty Analyst > National Oceanography Centre, Southampton > European Way, Southampton SO14 3ZH, UK > tel 023-8059-7743 > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > > -- 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-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel