Search:

Hi,
I have declared a global variable as pointer. The program performs certain number of iterations. After every iteration, the size of memory required for the pointer changes and this pointer...

Hi,
I want to find the square root of a matrix in C. I know there is command like "dpotrf" in C to find the cholesky decomposition, which gives us X, where XX' = A. But this method fails when A is...

Thanks a lot. I was really trying to get rid of this jacobian as the equations are very complex and the order of the system is high. I found that "gsl_odeiv2_step_apply' does not explicitly require...

This is the code I am using to integrate a function indicated by "func_aug" and its jacobian is indicated by "jac_aug". Thus jacobian is required as an argument in the following integrator. Can you...

Hi all,
I am writing a C program to numerically integrate a differential equation. This differential equation corresponds to dynamics of a system. I am using rkf45 to integrate it. But the problem...

Hi,
I am writing a C program using MPI for parallelization. Following is the script I use to compile and run the code:-


clear
make veryclean
mpicc -c -I ./include -O -o two.o...

No, I cannot change the fortran code. These are standard fortran commands that can be invoked from linux. These functions are used by MATLAB as well, for doing matrix operations. Even I think that...

The file is attached with the message. I am also posting the log, thought it is very large. You can ignore the message correponding to "chckdgnl". thta part is commented.:-


==11770== Memcheck, a...

Hi,
I am calling the following function in my code. When I run th executable with valgrind, I get the following message :"Conditional jump or move depends upon uninitialized value".
I get this...

Sorry.. I am able to locate the header file. Just wanted to know whether i need to link any library while compiling??

Thanks.

Thanks Salem.
Is this function/library freely available with all versions of Linux?? Do I need to link any library while compiling? I am currently using blas,lapack and math libraries. I alos tried...

Hi,
I am trying to solve an ordinary differential equation(ode) using C. There is a function ode45 in MATLAB. I was wondering whether there is any such function in C??

Thanks.

Yes, you were right. I had not paid attention to that. I had allocated memory equal to the size of an int and was trying to free memory equal to size of a double. ooops!!.
Thanks all.

Thanks all. Actually this is a long code(~1000 lines) and I've declared all the macros in the beginning of the code.I posted only that part of the code where I was getting the error. But as Grumpy...

If I free NN, I get "Segmentation Fault". If I free MM, I get "glibc detected()".If I don't free these two and free others(xint,wint), the code runs normal. I am not freeing any of these two more...

When I run this program I get segmentation fault.The code compiles and runs till the last line but when it encounters the "free()" commands in the last lines in main, it gives segmentation fault....