void matrix_t::trasponer(void){

matrix_item_t tmp;
char aux[80];

	for (int i = 2; i <= m_; i++){
		for (int j = 1; j <= i-1; j++){
			if (traspuesta_ == false){
				tmp = M_[pos(i,j)];
				M_[pos(i,j)] = M_[pos(j,i)];
				M_[pos(j,i)] = tmp;
			}
			else
				(traspuesta_ == true);
				M_[pos(i,j)];
		}
	}
	cout << endl;
	for (int i = 1; i <= m_; i++){
		std::cout <<"|";
		for (int j = 1; j <= n_; j++){
			sprintf(aux," %5.11f ", M_[pos(i,j)]);
			cout << aux;
		}
		std::cout << "|";
		cout << endl;
	}
}