requested and the system is found improper
          then GPEAK and FPEAK are both set to infinity, i.e., their
          second component is zero; in addition, IWARN is set to 2.
          If the test is not requested, but the system is improper,
          the resulted GPEAK and FPEAK may be wrong.
          If DICO = 'D' or JOBE = 'I', this option is ineffective.

  REDUCE  CHARACTER*1
          If CKPROP = 'C', specifies whether the user wishes to
          reduce the system order, by removing all uncont