code: public boolean eq(final Matrix B)
      {
          final Matrix A = this;
  
          if ((B.m_rows != A.m_rows) || (B.m_columns != A.m_columns))
          {
              return false;
          }
          for (int i = 0; i < m_rows; i++)
          {
              for (int j = 0; j < m_columns; j++)
              {
                  if (A.m_data[i][j] != B.m_data[i][j])
                  {
                      return false;
                  }
              }
          }
          return true;
      }
docs: Returns whether the matrix is the same as this matrix.
  
  @param B
  @return