[Octave-bug-tracker] [bug #36783] Large sparse matrix fails in thee 64-bit build

[Rofu]

Follow-up Comment #2, bug #36783 (project octave):

Yes, I was using mex interface.

Here is the sample "test.c" I used in a 64-bit with enough memory.

#include "mex.h"                                                              
          
                                                                              
          
void mexFunction( int nlhs, mxArray *plhs[],                                  
          
        int nrhs, const mxArray *prhs[] )                                     
          
{                                                                             
          
    mxCreateSparse(65535, 65535, 2749999776, mxREAL);                         
          
    return;                                                                   
          
}                                                                             
          


When I executed test.mex, i got the 
  error: test: failed to allocate 525161728 bytes of memory

It seems that it's a overflow problem. After I modified mex.cpp and
re-compiled octave again,  it works.


    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?36783>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/