similar to: remove loop which compares row i to row i-1

Displaying 13 results from an estimated 13 matches similar to: "remove loop which compares row i to row i-1"

2012 Jun 08
2
Percent of a given subset
How would I find the Percent of FuelTypeNum within the Band given AvailableMW? example: type 1 is 1% of PB0 type 2 is 54% of PB0 type 4 is 4% of PB0 type 5 is 42% of PB0 Note: the Bands and fuel types are not always constant. Data: FuelTypeNum Bands AvailableMW AvailableMWNewFormat 1 PB0 185319 185.319 2 PB0 18352000 18352 4 PB0 1338785 1338.785 5 PB0 14189756 14189.756 2 PB1
2012 Jun 06
5
ggplot incorrect legend
How do I create a legend with ggplot? I think should be getting the FuelTypeNum in the legend. Plot: http://r.789695.n4.nabble.com/file/n4632471/Rplot.jpeg My code is: ggplot(data=tempTable, aes(x=Bands8, y=SubPercent, fill=FuelTypeNum)) + geom_bar(position="stack", stat="identity") + scale_colour_hue('my legend', breaks = levels(tempTable$FuelTypeNum),
2012 Mar 30
0
[LLVMdev] Invalid code generated for on-stack class compares
clang++ generates invalid code for on-stack struct compares with overloaded operators in release 3.0. Take the following code: struct A { bool operator<(const A& other) { return ((long long int)this) < ((long long int)&other); } }; int main() { A a, b; return (a < b) + (b < a); } Usually, this program should return 1. Compiling it with "clang++ -Ox" with x
2014 Feb 12
2
How does extensions.lua compares to extensions.conf ?
Hello, How does extensions.lua compares to extensions.conf or extensions.ael on stability, performance and features ? Would you recommand extensions.lua as an easy/easier way to access memcached, redis or equivalent ? Thoughs ? Comments ? Regards -------------- next part -------------- An HTML attachment was scrubbed... URL:
2016 Mar 23
1
Redundant load in llvm's codegen compares to gcc when accessing escaped pointer?
The rationale given does not seem to square (IMHO) with the ubiquitous practice of having 0- or 1-length array at the end of a struct and then allocating additional elements for it using malloc, or the so-called "struct hack": http://c-faq.com/struct/structhack.html For example: typedef struct { enum inst_type type; unsigned num_ops; struct operand ops[1]; } inst;
2016 Mar 22
0
Redundant load in llvm's codegen compares to gcc when accessing escaped pointer?
Reply from Michael: &x points to the start of object x, and &x - something (something != 0) points outside object x. 'c' was a complete object, so &c-8 points outside any object, hence the formation of that pointer is already invalid (as is its dereference). https://gcc.gnu.org/ml/gcc/2016-03/msg00185.html >>On Fri, Mar 18, 2016 at 8:46 AM, Daniel Berlin <dberlin
2016 Mar 15
2
Redundant load in llvm's codegen compares to gcc when accessing escaped pointer?
Hi, Please look at this c code: typedef struct _PB { void* data; /* required.*/ int f1_; float f2_; } PB; PB** bar(PB** t); void qux(PB* c) { bar(&c); /* c is escaped because of bar */ c->f1_ = 0; c->f2_ = 0.f; } // gcc-5.2.1 with -fno-strict-aliasing -O2 on x86 call bar movq 8(%rsp), %rax movl $0, 8(%rax) movl $0x00000000, 12(%rax) // llvm
2011 Oct 14
2
rsync compares all files again and again
Hi, we do a 1:1 backup from our main raid to a backup raid every night with rsync -a --delete /mnt/raid1/ /mnt/raid2 rsync is 3.09, filesystems are ext3, OS is SLES 11 SP1. The rsync process takes several hours, even if no file has changed at all. Using -vv I see that rsync compares all files every time and that takes long for some hundreds of millions of small files. Can I tell rsync it
2009 Apr 26
3
3 questions regarding matrix copy/shuffle/compares
Hello all, I have the following function call to create a matrix of POP_SIZE rows and fill it with bit strings of size LEN: pop=create_pop_2(POP_SIZE, LEN) I have 3 questions: (1) If I did keep_pop[1:POP_SIZE] == pop[1:POP_SIZE] to keep a copy of the original data structure before manipulating 'pop' potentially, would this make a deep copy or just shallow? Ie
2016 Mar 19
2
Redundant load in llvm's codegen compares to gcc when accessing escaped pointer?
Agree, and I did : ) Please refer to this mailing list: https://gcc.gnu.org/ml/gcc/2016-03/msg00179.html On Sat, Mar 19, 2016 at 1:25 AM, Daniel Berlin <dberlin at dberlin.org> wrote: > I suspect you should just go ask #1 on the gcc mailing list and see what > the answer is. > We are basically trying to figure out their reasoning, but we should > instead just go ask what it is
2002 Jun 12
3
How does R compares for speed?
Hi, For those who are interested, I have update my R benchmark (to version 1.5.0) and also to Splus 6. They are available at: http://www.sciviews.org/other/benchmark.htm. A comparison is made between Matlab (5.3 & 6), R 1.5.0, Splus 6 rel 2, O-Matrix 5.1, Octave 2.1.31, Scilab 2.6, Rlab 2.1 and OX 3.00 under Windows 2000 pro. Overall, R is not the fastest package, but it is one of the
2016 Mar 18
3
Redundant load in llvm's codegen compares to gcc when accessing escaped pointer?
On 2016.03.17 at 16:35 -0700, Chris Lattner via llvm-dev wrote: > > > On Mar 15, 2016, at 7:58 AM, Chuang-Yu Cheng via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > > > Hi, > > > > Please look at this c code: > > > > typedef struct _PB { > > void* data; /* required.*/ > > int f1_; > > float f2_; > > } PB;
2016 Mar 18
4
Redundant load in llvm's codegen compares to gcc when accessing escaped pointer?
1. Same question as David, why &c - 8 is invalid? Is it related to below statements In C99 standard? 6.5.3.3: "Among the invalid values for dereferencing a pointer by the unary * operator are a null pointer, an address inappropriately aligned for the type of object pointed to, and the address of an object after the end of its lifetime." 2. We are trying to preserve 1st load and