def compute_l_iers2003(jc)
      return ((    485868.249036  + \
              (1717915923.2178    + \
              (        31.8792    + \
              (         0.051635  + \
              (        -0.00024470) \
              * jc) * jc) * jc) * jc) % Const::TURNAS) * Const::AS2R
    rescue => e
      raise
    end
def compute_l_iers2003(jc)
      return ((    485868.249036  + \
              (1717915923.2178    + \
              (        31.8792    + \
              (         0.051635  + \
              (        -0.00024470) \
              * jc) * jc) * jc) * jc) % Const::TURNAS) * Const::AS2R
    rescue => e
      raise
    end
=========================================================================
 Mean anomaly of the Moon (IERS 2003)

 @param:  jc         (ユリウス世紀)
 @return: longitude  (rad)
=========================================================================