similar to: question on "row.names" attribute of dataframe when called from a compiled package

Dear R developers, Motivated by discussion about checking inheritance of S3 and S4 objects (in head matrix/array topic) I would light to shed some light on a minor gap about that matter in R C API. Currently we are able to check inheritance for S3 class objects from C in a robust way (no allocation, thread safe). This is unfortunately not possible for S4 classes. I would kindly request new

Thank you Luke. That is why I don't use Rf_inherits but INHERITS which does not allocate, provided in the email body. I cannot do similarly for S4 classes, thus asking for some API for that. On Fri, Nov 1, 2019 at 5:56 PM Tierney, Luke <luke-tierney at uiowa.edu> wrote: > > On Fri, 1 Nov 2019, Jan Gorecki wrote: > > > Dear R developers, > > > > Motivated by

Folks, I'm fairly sure that I'm doing something stupid, but I'm getting a few really strange results from *some* of the distributions, but by no means all, when I link directly to the R shared library. I've tried this on both Windows with the precompiled Mingw binary of R-2.5.0 (compiling my code with MinGW-3.4.2), and by building R-2.5.0 on Mandriva Linux with gcc-3.4.4 and

Dear R developers, I've just encountered one "feature" of R-C extensions. If it is known, I would be thankful for any hints why it works this way (I found the way around, which is also mentioned here, but maybe it is not the best one). If it is however unknown, it might be considered for a "wish list". Consider a simple "aka" C function (the original

Hello, I am a newbie to LLVM and right now I am on the hook to parse some IR code and do some instrumentations. However, my problem is that no matter how I tweak my parsing code, it simply cannot print out anything. So here is my C code: int your_fun(int arg2) { int x = arg2; return x+2; } And here is my parsing code: #include <llvm/IR/Module.h> #include

As of LLVM 3.2, is it possible to use iostream with the MCJIT or interpreter execution engines? I'm getting some errors... Each of these commands correctly prints "hello": echo -e '#include <stdio.h>\nint main(){ printf("hello"); }' | clang -cc1 -emit-llvm-bc -x c++ | lli -use-mcjit echo -e '#include <iostream>\nint main(){ std::cout <<

Hello all, I recently foudn myself wanting to view the basic blocks in the selection DAG as pure DAGs - so just as a list of edges, with no other information. I added the below code to the start of the " void SelectionDAGISel::CodeGenAndEmitDAG()" function. It creates a separate txt file for each basic block and gives a list of edges between nodes. The segment of code is below -

Hi, when building the second release candidate of llvm 2.2 I noticed that exception handling seems to be broken on Linux x86-64. The exception is thrown but never caught. This can be seen by this trivial example: #include <iostream> using namespace std; class A { }; int main() { cout << "A" << endl; try { cout << "B" << endl;

In the "Writing R Extensions" manual appears this example, to get access to C++ function using the R commands: R> dyn.load(paste("X", .Platform$dynlib.ext, sep = "")) constructor Y R> .C("X_main") constructor X destructor X list() That gives me access to the function "X_main", but how to get access to methods and properties

Hi folks, My system is Windows98 + R1.9.0. The path for my system is c:\perl\bin; c:\mingw\bin; c:\rtools; c:\windows; c:\windows\command; c:\rw1090\bin. I created three files followed the examples in “Writing R extensions” in the directory c:\temp: // X.hh class X { public: X (); ~X (); }; class Y { public: Y (); ~Y (); }; // X.cc #include <iostream> #include "X.hh" static

I get a crash when I try to link multiple modules registered in their individual contexts. Documentation for Linker::LinkModules doesn't mention anything about contexts, and the first link succeeds. But the second link crashes. Is this not the right way to merge such modules? If not, then what is the right way? In any case, documentation for Linker::LinkModules should say if contexts are

Prof Brian Ripley writes: > Second, we don't have all the pertinent information such as the > configure options used and the architecture (x86_64?). I am going to > have to guess none as none were mentioned, but using --enable-R-shlib > would be pertinent. > > On 31/08/2015 05:47, Davor Cubranic wrote: >> On FreeBSD 10.2, I get the following error when compiling R

Hi, I am trying to set up a C++ library for my R code. I followed the R-extension manual but found out that the example of "X.cpp, X_main.cpp" is somewhat too simple. Here is my code: //lib4R.h testing for interfacing C++ with R -- using C++ library in R #include <iostream> using namespace std; class lib4R { public: lib4R(); ~lib4R(); int

I tried compiling using GCC. First, I changed config.site to: ~/R-3.2.2$ svn diff config.site Index: config.site =================================================================== --- config.site (revision 69236) +++ config.site (working copy) @@ -278,3 +278,8 @@ ## Path to the version of pkg-config to be used for locating cairographics. ## PKGCONF = +F77=gfortran48 +FC=${F77} +CC=gcc48

Hi, I'm trying to write a small piece of code that inlines all calls to a particular function. The codes is as follows Function* klee_check_divF = module->getFunction("klee_div_zero_check"); assert(klee_check_divF != 0 && "Failed to find klee_div_zero_check function"); // Hack inline checks for (Module::iterator f = module->begin(), fe =

The solution (provided in Microsoft's documentation) is to add: #include <cstdio> #include <io.h> #include <fcntl.h> and run: int result = _setmode( _fileno(stdin), _O_BINARY ); if( result == -1 ) { std::cerr<<"Cannot set input mode to binary."<<std::endl; return 1; } result = _setmode( _fileno(stdout), _O_BINARY ); if( result == -1 ) {

Hi, I think I have discovered a bug in FreeBSD 4.8-STABLE's system C++ compiler: % gcc -v % Using builtin specs. % gcc version 2.95.4 20020320 [FreeBSD] Here is a stripped down example that can be used to reproduce the bug: // ----------- begin bug.cpp ----------- #include <iostream> class Class { public: void M1 (void) { cout << "M1" << endl; }; void M2

Hello, I've added a Channel Device through virt-manager GUI. virsh dumpxml shows the device as. <channel type='unix'> <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/ubuntusaucy.marx'/> <target type='virtio' name='marx'/> <alias name='channel2'/> <address

Hi All, Specifically, the problem is that I want to insert a string into the source code. When the source code is compiled by the compiler into bitcode file such info will be extracted and stored somewhere else, and the compiler only compiles the original source code. An example is like: a1.cpp: int main() { int a = 0; cout << a << endl; } I'd like to

I'm trying to link two modules together using the C++ API, one that's a sort of library module and one that's being generated from the source language. If I have something like this: OwningPtr<MemoryBuffer> owning_ptr; if (MemoryBuffer::getFile(StringRef("../hello.bc"), owning_ptr)) std::cout << "error opening file" << std::endl; Module* Lib