public function __construct(Matrix $matrix_a, Vector $vector_b)
{
$this->matrix_a = $matrix_a;
$this->vector_b = $vector_b;
$this->vector_x = new Vector($matrix_a->get_cols_count());
}
/**
*
* @param Matrix $matrix_a
*
* @return bool
*/
public static function is_positive_matrix(Matrix $matrix_a)
{
$is_positive_matrix = true;
for ($i = 0; $i < $matrix_a->get_rows_count(); $i++)
for ($j = 0; $j < $matrix_a->get_cols_count(); $j++)
$is_positive_matrix = $is_positive_matrix && Scalar_Helper::is_positive($matrix_a->get_item($i, $j));
return $is_positive_matrix;
}
