R

#### robix

with my multiplication matrix code.

I'll try to give you as many details as possible.

My matrix structure:

typedef struct {

int col; /* number of colowns */

int lin; /* number of lines*/

double *element; /* pointer do double... this is actually, a "simulated

multidymensional array", got the idea from the C FAQ from this newsgroup */

} matrix;

matrix mul_matrix(matrix mat1, matrix mat2, int lin, int col)

{

matrix M;

int i, j, k, exp;

M = init_matrix(lin, col); /* inits M(will old the result from mat1 *

mat2), no problem here. At this point i am sure that mat1 and mat2 all have

their right values

and that M has the right size*/

/* Try to multiply */

for (i=0; i<lin; i++) {

for (j=0; j<col; j++) {

exp = 0;

for (k=0; k<col; k++) {

exp += mat1.element[i * (mat1.col * mat1.lin) + k]*

mat2.element[k * (mat2.col * mat2.lin) + j]; /* big problem... give me

random results*/

}

M.element[i * (lin * col) + j] = exp;

}

}

return M;

}

After 4 hours of trying to resolve this problem i'm exaust and in need for

some sleep Maybe that will make me good cause i sinceriously can't

see the problem on the code! Until now i've only used printf to assist me as

a rudimentary debugger. I think i need something more powerfull but

gdb don't want to work with devc++...

Thanks to anyone who can help me out!