Recent content by Angelos K

I apologize. I do not know. How can I check?

I am a programming newbie, I hope I don't give you too much trouble. I use LAPACK on my 2.7GHz CPU. My expectations on the running times are based on Figure 4.1 in this dedicated publication , as well as on Fanfan's answer to this Stackoverflow Post : Both computers mentioned (and especially...

All errors disappeared by using C linkage. Every occurrence of extern void function {...} was replaced by extern "C" { void function {...} } Specifically, I now use: /* DSYEV prototype */ extern "C"{ void dsyev( char* jobz, char* uplo, int* n, double* a, int* lda, double* w, double* work...

Thank you so much! What you say is so logical and resolves many errors. But there are still some errors left: ludi@ludi-M17xR4:~/Desktop/tests$ g++ -Ddsyev=dsyev_ -o combo.x combo.cc -L/usr/local/lib -llapack -lblas && ./combo.x combo.cc: In function ‘int main()’: combo.cc:107:74: warning...

I have an official LAPACK example from here: https://software.intel.com/sites/products/documentation/doclib/mkl_sa/11/mkl_lapack_examples/dsyev_ex.c.htm It compiles and runs without errors or warnings after using ludi@ludi-M17xR4:~/Desktop/tests$ gcc -Ddsyev=dsyev_ -o sylapack sylapack.c...

Thank you very much for the clarification about [in] parameters! As you resolved all problems: Should I mark this thread as solved, and if so, how?

Thank you. It appears to work, but I have only tested trivial cases. I saw your warning earlier, but understood it just now (blush). It seems I am not able to modify my post anymore. So I should replace [ i ] by [k] evereywhere and then make the corresponding logical adjustments, right? What...

Thanks. This code appears to work. #include<stdio.h> #include<math.h> #include <stdlib.h> //................... void dgeTranspose( double *Transposed, double *M ,int n) { int i,j; for(i=0;i<n;i++) for(j=0;j<n;j++) Transposed[i+n*j] = M[i*n+j]; } //................... //...

Mod note: I revised the code below slightly, changing the loop control variable i to either j or k. The reason for this is that the browser mistakes the letter i in brackets for the BBCode italics tag, which causes some array expressions to partially disappear. Hello, I am trying for the first...

Thank you, unstable. I am using Linux. Release 2010b. How can I send you the .fig file? Greetings, Angelos

Dear all, I generate some MATLAB figures that I want to print as eps. The figures look fine in the .fig format. When I open the eps, there is a problem. Wherever there is a vertical line (or part of function) the line shows tiny saw-teeth. I would like to attach I file but it seems one can't...

Hi, all! Unfortunately I'm not much of a computer guy, so I'm sorry if I leave out anything important. I'm attempting to build Cuba-2.1. The distribution I'm using is: DISTRIB_ID=Ubuntu DISTRIB_RELEASE=10.04 DISTRIB_CODENAME=lucid DISTRIB_DESCRIPTION="Ubuntu 10.04.2 LTS" I go...

Dear all, so far I have only studied weak lensing. Therefore I understand little about multiple images.The light paths, by Fermat's principle, have to correspond to stationary points of the (proper) time delay. Minima, maxima saddle points. Basics are nicely reviewed here [p.14]...

Hi, I can only offer my own thoughts based on some thermodynasmics, but the following seems very reasonable to me: The class of pertubation you allready know is the adiabatic one. IF we assume reversibility, adiabatic processes are exactly isentropic (fixed entropy) ones. It makes...

Related paper An interesting paper on the subject is this one: Davis and Lineweaver 2004 in Publications of the Astronomical Society of Australia, Volume 21, Issue 1, pp. 97-109 It also deals with the question why light from such superluminarily receding objects could reach us - which I...