Hi, I want to zero all items below a11 with gel. I have this code, but I don't know how to use gel functions? (http://www.inference.phy.cam.ac.uk/pjc51/local/gsl/manual/gsl-ref_13.html#SEC228) #include <iostream>#include <math.h>#include <stdio.h>#include <gsl/gsl_matrix.h>#include <gsl/gsl_blas.h> const Int DIM=4; intmain (void){ size_t i,j; gsl_matrix *m = gsl_matrix_alloc (DIM, DIM); for (i = 0; i < DIM; i++) for (j = 0; j < DIM; j++) gsl_matrix_set (m, i, j,4); for (i = 0; i < DIM; i++){ for (j = 0; j < DIM; j++){ std::cout<<gsl_matrix_get(m, i, j); } std::cout<<std::endl;} gsl_matrix_free (m); return 0;} Best regards,A.K
