similar to: How to preserve data across function calls in a library package

Hi, PS: It is a generic question related to partial loop unrolling, and nothing specific to LLVM. As far as partial loop unrolling is concerned, I could see following three different possibilities. Assume that unroll factor is 3. Original loop: for (i = 0; i < 10; i++) { do_foo(i); } 1. First possibility i = 0; do_foo(i++); do_foo(i++);

Hello all, I've run into a problem with returning a struct on Linux x86. Consider the following two pieces of code: # cat a.ll declare { i32, i32 } @foo(i32, i32, i32) define void @do_foo() { call { i32, i32 } @foo(i32 1, i32 2, i32 3) ret void } # cat b.c #include <stdio.h> #include <stdint.h> extern void

I was wondering if someone could help me with a problem getting locfit running. I am running Digital Unix 3.2D on an alphastation, with R 0.61.1 I downloaded the CRAN distribution of locfit. I had no problems installing it with R INSTALL (I installed it into my library rather than the default base library; the output is attached at the end of this email message). I then tried to test it with the

I have created a DLL not so long ago using C code. My code used the IntegerFromString() function that used to be exported in the Rinternals.h header file (and thus easily accessible). Recently I upgraded to R 2.5.0 and my DLL stopped working. I see that the IntegerFromString() function is not exported in any of the header files in the RHOME\include directory. Is it possible for me to use it

Dear R-help-list, The following is R function I wrote for computing multi-dimensional kernel density. I am seeking R experts who can make the code to run faster, 50 times faster ideally. Specifically, for function kernel.estimate = function(points, bw), the argument points is a d by n matrix as the n points in the d-dimensional space, bw is the bandwidth. The function will compute the kernel

Dear developers, I am a maintainer of the CORElearn package which uses OpenMP multithreading to speed up some computations. When producing a new release we tested the package with the latest R 2.12.0. On Linux the package works normally. On Windows we installed a recommended version of Rtools (Rtools212) but the linker fails with the messages below. ... g++

Hello, I submit a patch for review that implements code coverage tracing in the R interpreter. It records the lines that are actually executed and their associated frequency for which srcref information is available. I perfectly understands that this patch will not make its way inside R as it is, that they are many concerns of stability, compatibility, maintenance and so on. I would like to have

Is the following a known issue, in particular in terms of message clarity of the latter two? > matrix(0, 10^8, 10^8) Error: cannot allocate vector of size 2064896 Kb > matrix(0, 20, 10^10) Error in matrix(0, 20, 10^10) : negative length vectors are not allowed > matrix(0, 10^10, 10^10) Error: cannot allocate vector of size 0 Kb # looks better for arrays: > array (0, c(20, 10^10))

Hello, Here is a problem I have had trying to install locfit, the package for R. I have already contacted Clive Loader who thinks the problem has more to do with R than locfit, so here is the point : The version of R I am currently running is R-base-0.90 that I installed using the R-base-0.90.1-1.i386.rpm package. I dowloaded the locfit package available at the CRAN site and ran : R INSTALL

A colleague sent me the following: If you specify probabilities in the 'sample' function and forget to type 'prob=...', then you get nonsense. E.g. sample(1:10,1,c(0,0,0,0,1,0,0,0,0,0)) does not filter '5', while sample(1:10,1,prob=c(0,0,0,0,1,0,0,0,0,0)) does it correctly. I wish this would return an error because the

problem of the very large memory require by the Sign extension. --- R-2.5.0.orig/src/main/serialize.c 2007-03-27 01:42:08.000000000 +0900 +++ R-2.5.0/src/main/serialize.c 2007-06-25 00:48:58.000000000 +0900 @@ -1866,7 +1866,7 @@ static void resize_buffer(membuf_t mb, int needed) { - int newsize = 2 * needed; + size_t newsize = 2 * needed; mb->buf = realloc(mb->buf,

Hi I'm trying to develop some C code to find the fixpoint of a contraction mapping, the code compiles and gives the right results when executed in R. However R-gui session is frequently terminated. I'm suspecting some access violation error due to the exception code 0xc0000005 In the error report windows 10 gives me. It is the first time I'm writing any C-code so I'm guessing I

R gurus, Every so often(*) someone asks how to suppress scientific notation in printing, so I thought I'd give it a shot, but I need some help. The formatting decision is made(**) on line 286 of src/main/format.c : if (mF <= *m) { /* IFF it needs less space : "F" (Fixpoint) format */ where mF is the number of characters for "normal" printing and *m is the number

Hi, Hope you are well. I was wondering if there is a function at C level that is equivalent to mtcars$carb or .subset2(mtcars, "carb"). If I have the index of the column then the answer would be VECTOR_ELT(df, asInteger(idx)) but I was wondering if there is a way to do it directly from the name of the column without having to loop over columns names to find the index? Thank you Best

On Wed, 9 May 2001 andreas.krause@pharma.novartis.com wrote: > Is the following a known issue, in particular in terms of message clarity of the latter two? Yes, bug PR#929. It's a bug in asInteger, an internal C routine which using (int) on a double. coerce.c has better routines used to corce vectors, and the comment /* This section of code handles type conversion for elements */ /* of

One hassle I could do without is the necessity of writing C wrapper functions like this: void fameInit(int *status){ cfmini(status); return; } when I want to call a library function (cfmini, in this case) that takes an int argument. The .C interface only lets me pass a pointer to an int, rather than the int itself. Is there any chanch that .C could be enhanced to allow passing arguments by

I've been hacking with parallel package for some time and built a parallel processing framework with it. However, although very rarely, I did notice "ignoring SIGPIPE signal" error every now and then. After a deep dig into the source code, I think I found something worth noticing. In short, wring to pipe in the C function mc_exit(SEXP sRes) may cause a SIGPIPE. Code from

Is there a missing value constant defined for R_xlen_t, cf. NA_INTEGER (== R_NaInt == INT_MIN) for int(eger)? If not, is it correct to assume that missing values should be taken care/tested for before coercing from int or double? Thank you, Henrik

It's tough to reliably reproduce, but I often get stack imbalance warnings when calling max.col() on non-real/double matrix. The code is conditionally PROTECTing but not incrementing its nprot counter for the eventual UNPROTECT. Pretty sure this would fix (but I haven't tested it): Index: array.c =================================================================== --- array.c (revision

I have a number of fixtures in my test suite. For example, with acts_as_authenticated and acts_as_state_machine, I created a number of users in different account states for use in functional testing. (Suspended users can not log in, etc) Is it a good idea to run fixtures through tests to ensure that they conform to their ideals? EG: assert users(:suspended_user).suspended? If so, where should