Displaying 20 results from an estimated 30 matches for "vec1".

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2008 Dec 30

2

[LLVMdev] Folding vector instructions

...;min", the conversion involves in 'extract' the vector, create
less-than-compare, create 'select' instruction, and create 'insert-element'
instruction.
<code>
llvm::Value * Instructions::min(llvm::Value *in1, llvm::Value *in2)
{
std::vector<llvm::Value*> vec1 = extractVector(in1); // generate LLVM
extract element
std::vector<llvm::Value*> vec2 = extractVector(in2);
Value *xcmp = m_builder.CreateFCmpOLT(vec1[0], vec2[0], name("xcmp"));
Value *selx = m_builder.CreateSelect(xcmp, vec1[0], vec2[0],...

2013 Jun 18

1

transform 3 numeric vectors empty of 0/1

Dear all,
Without a loop, I would like transform 3 numeric vectors empty of 0/1 of
same length
Vec1 : transform 1 to A and 0 to ""
Vec2 : transform 1 to B and 0 to ""
Vec3 : transform 1 to C and 0 to ""
to obtain only 1 vector Vec who is the paste of the 3 vectors (Ex : ABC,
BC, AC, AB,...)
Any idea ?
Thank you for your help
--
Michel ARNAUD

2019 Nov 10

2

Reassociation is blocking a vectorization

...s,
I am looking at the bug
https://bugs.llvm.org/show_bug.cgi?id=43953
and found that following piece of ir
%arrayidx = getelementptr inbounds float, float* %Vec0, i64 %idxprom
%0 = load float, float* %arrayidx, align 4, !tbaa !2
%arrayidx2 = getelementptr inbounds float, float* %Vec1, i64 %idxprom
%1 = load float, float* %arrayidx2, align 4, !tbaa !2
%sub = fsub fast float %0, %1
%add = fadd fast float %sum.0, %sub
is transformed into
%arrayidx = getelementptr inbounds float, float* %Vec0, i64 %idxprom
%0 = load float, float* %arrayidx, align 4, !tbaa !2
%arrayidx2...

1999 Dec 16

2

R question

I have the following question, which is elementary but I am unable to
answer.
In a for(i=10) loop, I am trying to represent the 10 1-dimensional vectors
l1, l2,... l10 by some expression that will run through these values.
ie. soppose I want to add l1 + ... + l10
I could go
x <- 0
for(i in 1:10){ x <- x+ l(i)}
This should return x to be the sum of the 10 li's for i from 1 to 10

2008 Dec 30

2

[LLVMdev] [Mesa3d-dev] Folding vector instructions

...in 'extract' the vector, create
> less-than-compare, create 'select' instruction, and create 'insert-element'
> instruction.
>
> <code>
> llvm::Value * Instructions::min(llvm::Value *in1, llvm::Value *in2)
> {
> std::vector<llvm::Value*> vec1 = extractVector(in1); // generate LLVM
> extract element
> std::vector<llvm::Value*> vec2 = extractVector(in2);
>
> Value *xcmp = m_builder.CreateFCmpOLT(vec1[0], vec2[0], name("xcmp"));
> Value *selx = m_builder.CreateSelect(xcmp, vec1[0], vec2[0],...

2013 Sep 26

2

Help with list

I have a list that gives me the number of occurrences of numbers 1, 2, 3 and
4.
Sometimes a single in a casa just appears 0 and 1, in others only 2, and every
combination you can think of.
Eg
> Caso [1:2]
$ `9`
0 1
2 10
$ `13`
0 2
2 4
Can I turn it into a matrix consisting of 4 columns in which I put the
number of occurrences of the previous numbers, and for cases where it does

2007 Aug 28

1

Age-Length key with kimura algorith

Se ha borrado un texto insertado con un juego de caracteres sin especificar...
Nombre: no disponible
Url: https://stat.ethz.ch/pipermail/r-help/attachments/20070828/6641b572/attachment.pl

2000 Jun 17

2

R 1.1.0 for Windows

Windows binaries at CRAN (bin/windows/Windows-NT/base) have been updated
to R-1.1.0. See below for a list of Windows-specific changes.
We thanks all the people who checked over pre-test versions.
guido masarotto
(for the R-core team)
Windows-specific changes to R
=============================
There is now a GUI preferences editor on the Edit menu in Rgui.
A data entry

2000 Jun 17

2

R 1.1.0 for Windows

Windows binaries at CRAN (bin/windows/Windows-NT/base) have been updated
to R-1.1.0. See below for a list of Windows-specific changes.
We thanks all the people who checked over pre-test versions.
guido masarotto
(for the R-core team)
Windows-specific changes to R
=============================
There is now a GUI preferences editor on the Edit menu in Rgui.
A data entry

2013 Jul 02

2

Replacing strings to numbers

Hi guys,
I was wondering if any one is able to help me on a problem that I was stuck
with for a long time. It involves the replacement of character strings with
numbers. The character string can take on only 3 possible values, for
instance:
AA
AT
TT
I would want R to replace AT with 0. Between AA and TT, I want to compare
the frequency of either value, and then for the one which occurs more, I

2016 Mar 11

3

masked-load endpoints optimization

...already does this, so either my proposal is ok
for x86, or we're already doing an illegal optimization:
define <4 x i32> @load_bonus_bytes(i32* %addr1, <4 x i32> %v) {
%ld1 = load i32, i32* %addr1
%addr2 = getelementptr i32, i32* %addr1, i64 3
%ld2 = load i32, i32* %addr2
%vec1 = insertelement <4 x i32> undef, i32 %ld1, i32 0
%vec2 = insertelement <4 x i32> %vec1, i32 %ld2, i32 3
ret <4 x i32> %vec2
}
$ ./llc -o - loadcombine.ll
...
movups (%rdi), %xmm0
retq
On Thu, Mar 10, 2016 at 10:22 PM, Nema, Ashutosh <Ashutosh.Nema at amd...

2013 Sep 26

2

Sums based on values of other matrix

Dear all,
I have a big problem:
- I got two matrices, A and B
- A shows identifies the value of B, however the values of B must be summed
- For instance,
1 1 2 2
2 2 1 1
gives matrix a
3 4 2 1
1 1 2 2
gives matrix b
Now the result for the value 1 would be
7
4
which are the rowsums of the values of matrix B given that matrix A has the value 1.
How can I do this automatically? I

2013 Jul 22

4

How to split two levels several times?

Hi,
I have a small problem with the function split() and would appreciate your help.
I have a table called ?XXX? with 2 columns and 49 rows. The 49 rows belong to 8 different levels (electrode1, ...,electrode8). I want to split the table always at the row where ?electrode1? starts again so that I can export 7 individual dataframes (numbered ?dataframe1? to ?dataframe7?) which contain always

2013 Jul 12

3

Needing help for excluding vector elements

Hello,
R for Dummies.
How can I exclude the first 1000 values of a vector (length 12000)? More
generally all the values up to the ith?
Thanks for your help,
Dr Olivier Charansonney
Cardiologue
Centre Hospitalier Sud-Francilien, Corbeil-Essonnes, France
[[alternative HTML version deleted]]

2013 Sep 02

3

Product of certain rows in a matrix

Hi,
You could try:
A<- matrix(unlist(read.table(text="
1 2 3
4 5 6
7 8 9
9 8 7
6 5 4
3 2 1
",sep="",header=FALSE)),ncol=3,byrow=FALSE,dimnames=NULL)
library(matrixStats)
?res1<-t(sapply(split(as.data.frame(A),as.numeric(gl(nrow(A),2,6))),colProds))
?res1
#? [,1] [,2] [,3]
#1??? 4?? 10?? 18
#2?? 63?? 64?? 63
#3?? 18?? 10??? 4

2013 Sep 05

2

binary symmetric matrix combination

...0 0 0 1 1 0 0
s2 1 0 0 0 0 1 0 1 0 0
s30 1 0 0 0 0 1 1 0 0 0
e5 1 0 0 0 0 0 0 0 0 1
l15 1 0 0 0 0 0 0 0 1 0",sep="",header=TRUE))
names1<-unique(c(colnames(m1),colnames(m2),colnames(m3),colnames(m4)))
Out2<-matrix(0,length(names1),length(names1),dimnames=list(names1,names1))
vec1<- paste0(colnames(m1)[col(m1)],rownames(m1)[row(m1)])
vecOut<- paste0(colnames(Out2)[col(Out2)],rownames(Out2)[row(Out2)])
Out2[match(vec1,vecOut)]<- m1
vec2<- paste0(colnames(m2)[col(m2)],rownames(m2)[row(m2)])
Out2[match(vec2,vecOut)]<- m2
vec3<- paste0(colnames(m3)[col(m3)],row...

2016 Mar 15

3

the as-if rule / perf vs. security

...al is ok
> for x86, or we're already doing an illegal optimization:
>
>
> define <4 x i32> @load_bonus_bytes(i32* %addr1, <4 x i32> %v) {
> %ld1 = load i32, i32* %addr1
> %addr2 = getelementptr i32, i32* %addr1, i64 3
> %ld2 = load i32, i32* %addr2
> %vec1 = insertelement <4 x i32> undef, i32 %ld1, i32 0
> %vec2 = insertelement <4 x i32> %vec1, i32 %ld2, i32 3
> ret <4 x i32> %vec2
> }
>
> $ ./llc -o - loadcombine.ll
> ...
> movups (%rdi), %xmm0
> retq
>
>
>
>
> On Thu, Mar 1...

2013 Aug 26

4

transform variables

Dear all!
I have a data frame composed by 13 columns (year, and 12 months). I want to
transform this data base in another like this
year month values
1901 1
1901 2
1901 3
.....
1901 12
1902 1
1902 2
....
1902 12
Is there a possibility to succeed that in R?
Thank you!
best regards!
CR
--
---
Catalin-Constantin ROIBU
Lecturer PhD, Forestry engineer
Forestry Faculty of Suceava
Str.

2006 Jun 23

2

Tetrachoric correlation in R vs. stata

I hope someone here knows the answer to this since it will save me from
delving deep into documentation.
Based on 22 pairs of vectors, I have noticed that tetrachoric
correlation coefficients in stata are almost uniformly higher than those
in R, sometimes dramatically so (TCC=.61 in stata, .51 in R; .51 in
stata, .39 in R). Stata's estimate is higher than R's in 20 out of 22

2013 Oct 17

42

[PATCH v8 0/19] enable swiotlb-xen on arm and arm64

Hi all,
this patch series enables xen-swiotlb on arm and arm64.
It has been heavily reworked compared to the previous versions in order
to achieve better performances and to address review comments.
We are not using dma_mark_clean to ensure coherency anymore. We call the
platform implementation of map_page and unmap_page.
We assume that dom0 has been mapped 1:1 (physical address ==
machine