code: public void set(T value, int m, int n)
      {
          if ( isComplex() )
          {
              throw new IllegalStateException("Cannot use this method for Complex matrices");
          }
          setReal(value, m, n);
      }
docs: Does the same as <code>setReal</code>.
  
  @param value - element value
  @param m - row index
  @param n - column index