Hi, first of all, I'd like to thank you for being interested. You're right, it wasn't very clever to ask without giving any example code. Here it is #include <cln/complex.h> #include <cln/complex_io.h> #include <cln/float.h> #include <iostream> using namespace std; using namespace cln; float_format_t default_float_format = float_format(40); int main(void) { int i, N = 10; cl_N *A; A = (cl_N*)malloc(sizeof(cl_N)*N); for(i=0; i<N; i++) { *(A+i) = complex(cl_float(i),cl_float(2)); } for(i=0; i<N; i++) { cout << *(A+i) << endl; } cout << "See, it works!" << endl; } The understandable error message is: Unauthorized access to memory (SIGSEGV) However I don't know, how to do things properly. Thank you for any advice. Breta

Hi,

sopik@fzu.cz wrote:

...

I'd like to to work with fields of complex numbers of high precision using the CLN library. I can't successfuly allocate the memory using memalloc however. I tired few possibilities, but nothing worked. There is no notice about this topic in manual or in mail discussion, so it seems to be straightforward. But I have no idea how to do it.

I'm not sure what you are trying to do, but working with complex numbers is straightforward. This is C++ and you should rely on the power of constructors/destructors and, if necessary, use new/delete for memory management, instead of malloc/free.

Here is a working mini-example:

#include <cln/cln.h> #include <iostream> using namespace std; using namespace cln;

int main() { cl_N x = -4; cl_N sqrt_x = sqrt( x ); if ( sqrt_x == complex( 0, 2 ) ) { cout << "See, it works!" << endl; } }

If this doesn't help, please post some example code.

Best wishes -rbk. -- Richard B. Kreckel <http://www.ginac.de/~kreckel/>