similar to: passing a matrix from R to C code

Hi R user, I have two dataframe with different variables and coordinates : X Y sp bio3 bio5 bio6 bio13 bio14 1 -70.91667 -45.08333 0 47 194 -27 47 12 2 -86.58333 66.25000 0 16 119 -345 42 3 3 -62.58333 -17.91667 0 68 334 152 144 28 4 -68.91667 -31.25000 0 54 235 -45 25 7 5 55.58333 48.41667 0 23 319 -172 23 14 6 66.25000

On Thu, Feb 07, 2013 at 09:53:39PM +1100, Vadim Rozenfeld wrote: > On Thu, 2013-02-07 at 12:18 +0200, Michael S. Tsirkin wrote: > > On Thu, Feb 07, 2013 at 08:24:10PM +1100, Vadim Rozenfeld wrote: > > > On Thu, 2013-02-07 at 11:33 +1030, Rusty Russell wrote: > > > > Vadim Rozenfeld <vrozenfe at redhat.com> writes: > > > > > On Tue, 2013-02-05 at

On Thu, Feb 07, 2013 at 09:53:39PM +1100, Vadim Rozenfeld wrote: > On Thu, 2013-02-07 at 12:18 +0200, Michael S. Tsirkin wrote: > > On Thu, Feb 07, 2013 at 08:24:10PM +1100, Vadim Rozenfeld wrote: > > > On Thu, 2013-02-07 at 11:33 +1030, Rusty Russell wrote: > > > > Vadim Rozenfeld <vrozenfe at redhat.com> writes: > > > > > On Tue, 2013-02-05 at

I got a new USB ethernet adapter from ebay, the ad said RealTek chipset, so I thought I would chance it. Well, my 5.2 system does not recognize the USB device. At all. What do I need to do? I checked the driver CD and the XP driver directory's .inf file has the following: ; ASIX AX88172 USB2 to Fast Ethernet Adapter * ; * ; Copyright 2001-2003,

Hello I'm testing SPEEX on embedded board using ARM7 (Atmel). ARM7 don't have floating point so I'm using FIXED_POINT. Unfortunately the encoding speed is about 5 times slower then necessary for real time. ARM7 is slow for 16/8 bits operations. The sequence: static inline spx_word32_t compute_pitch_error(spx_word16_t *C, spx_word16_t *g, spx_word16_t pitch_control) {

This patch ensures that lib/lib/vorbisfile.c will not use negative value of "link" when seeking. Negative value (link=-1) was used by ov_time_seek(vf, 0.0) at least. Double arithmetic is not precise, it depends on order of operands. "for(i=0;i<links;i++) sum+=x[i]" gives slightly different result than "for(i=links-1;i>=0;i--) sum+=x[i]". I tried add this

Hi, Chris Lattner wrote: > All the non-vastart calls can be anywhere. va_end in particular codegens > to a noop on all targets llvm currently supports, fwiw. > Things go well, except for the following (pathological?) C program: int va_double_sum(int count,...){ int i,sum=0; va_list ap; va_start(ap,count); for(i=0;i<count;i++){ sum+=va_arg(ap,int); } va_end(ap);

Hi, Gang: I remember there were different voices when you check-in the code. I agree with them although I didn't reply your mail in open64's mailing list. In the transformation you illustrate, it involves two operations: 1) promote WHILE-loop into DO-loop (i.e noncountable loop to countable loop) 2) get rid of trip-count dec/inc and compare. 1) is irrelevant to HW loop.

I am the designer for open64 hwloop structure, but I am not a student. Hope the following helps: To transform a loop into hwloop, we need the help from optimizer. For example, while(k3>=10){ sum+=k1; k3 --; } into the form: zdl_loop(k3-9) { sum+=k1; } So, we introduce a new ZDLBR whirl(open64 optimizer intermediate) operator, which represents the loop in whirl as:

Hello, I have written the following code. when i try to vectorize it through opt. i am not getting vectorized instructions. #include <stdio.h> #include<stdlib.h> int main(int argc, char** argv) { int sum=0; int a=atoi(argv[1]); int b=atoi(argv[2]); for (int i=0;i<1000;i++) { sum+=a+b; } printf("sum: %d\n", sum); return 0; } i use following commands: clang -S -emit-llvm

I want to vectorize the user given inputs. when opt does vectorization user supplied inputs (from a text file) will be added using AVX vector instructions. as you pointed; When i changed my code to following: int main(int argc, char** argv) { int a[1000], b[1000], c[1000]; int aa=atoi(argv[1]), bb=atoi(argv[2]); for (int i=0; i<1000; i++) { a[i]=aa, b[i]=bb; c[i]=a[i] + b[i];

Hi R developers, I am new to this forum and hope someone can help me with .Call in R. Greatly appreciate any help! Say, I have a vector called "vecA" of length 10000, I generate a vector called "vecR" with elements randomly generated from Uniform[0,1]. Both vecA and vecR are of double type. I want to replace elements vecA by elements in vecR only if sum of elements in

i removed printf from loop. Now getting no error. but the IR doesnot contain vectorized code. IR Output is as follows: ; ModuleID = 'sum-vec.ll' source_filename = "sum-vec.c" target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" ; Function Attrs: norecurse nounwind readnone uwtable define i32 @main(i32, i8**

Greetings people; The section of drakeconf that pclos uses has two problems. First is several screens full of complaints about deprecated syntax in "/etc/udev/rules.d/70-nut-usbups.rules" at each reboot. So I pulled the current 2.5 svn trunk, then found I was missing quite a few build tools needed here that aren't used when building a kernel, currently running a 32 bit

even if i make my code as follows: vectorized instructions not get emitted. What to do? int main(int argc, char** argv) { int a[1000], b[1000], c[1000]; int g=0; int aa=atoi(argv[1]), bb=atoi(argv[2]); for (int i=0; i<1000; i++) { a[i]=aa, b[i]=bb; c[i]=a[i] + b[i]; g+=c[i]; } printf("sum: %d\n", g); return 0; } On Thu, Aug 17, 2017 at 10:03 PM, Craig Topper <craig.topper at

Dear all, > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 1 minor 5.0 year 2002 month 04 day 29 language R OS: Win98 I have a strange problem with a particular data.frame built with

On Tue, 3 Oct 2006, Bram Adams wrote: >> You'd have to change it to something like: >> void foo(int X, ...) { >> P = va_start(); >> bar(X, P); >> } >> >> void bar(int X, valist P) { >> use(P); >> } > > Can the other va_...-intrinsics be used in bar as were the "P = > va_start" in bar? The va_start probably is

Hey all, I need some help with a cross validation. I'm new with R and as well with statistics. I had a group work to create a tool for remote sensing class that extracts the best bands of hyperspectral satellite images that describe vegetation. Its a regression between a linear function of using a normalized differenced index (i-j)/(i+j) while i and j are the bands (in the data these are the

Hi, Op 3-okt-06, om 20:48 heeft Chris Lattner het volgende geschreven: > You'd have to change it to something like: > > void foo(int X, ...) { > P = va_start(); > bar(X, P); > } > > void bar(int X, valist P) { > use(P); > } Can the other va_...-intrinsics be used in bar as were the "P = va_start" in bar? The va_start probably is unnecessary

Hi Shuxin, Eli, On 22/11/2012 03:19, Shuxin Yang wrote: > Hi, Ivan: > > My $0.02. hasZeroCostLooping() disabling unrolling dose not seem > to be > appropriate for other architectures, at least the one I worked before. I appreciate your feed-back. Could you give an example where building a hw loop is not appropriate for your target? > > You mentioned: >