CKWYR     CKWYR     CKWYR     CKWYR     CKWYR     CKWYR     CKWYR     
          **********************************************
                    **************************
                              ******

SUBROUTINE CKWYR  (RHO, T, Y, ICKWRK, RCKWRK, WDOT)
Returns the molar production rates of the species given mass
density, temperature and mass fractions.

INPUT
RHO       - Real scalar, mass density.
               cgs units, gm/cm**3
T(*)      - Real array, temperature;
               cgs units, K
Y(*)      - Real array, mass fractions of the mixture;
            dimension at least KK, the total species count.
ICKWRK(*) - Integer workspace array; dimension at least LENICK.
RCKWRK(*) - Real    workspace array; dimension at least LENRCK.

OUTPUT
WDOT(*)   - Real array, chemical production rates of the species;
            dimension at least KK, the total species count.
               cgs units, moles/(cm**3*sec)