ADAS Subroutine continuo

      subroutine continuo(wave   , tev    , iz0  , iz1  ,
     &                    contff , contin
     &                   )

C-----------------------------------------------------------------------
C
C  ***************** FORTRAN77 SUBROUTINE: continuo ********************
C
C  PURPOSE: For an given wavelength generate radiative reconbination
C           and bremsstrahlung emissivity.
C
C  CALLING PROGRAM: General use.
C
C
C  INPUT : (R*8)  wave    = Wavelength required (A)
C          (R*8)  tev     = Electron temperature (eV)
C          (I*4)  iz0     = Atomic number
C          (I*4)  iz1     = Ion stage + 1
C  OUTPUT: (R*8)  contff  = Free-free emissivity (ph cm3 s-1 A-1)
C          (R*8)  contin  = Total continuum emissivity 
C                           (free-free + free-bound)(ph cm3 s-1 A-1)
C
C
C  ROUTINES:
C          ROUTINE    SOURCE    BRIEF DESCRIPTION
C          ------------------------------------------------------------
C          r8gbf      ADAS      Free-free Gaunt factor.
C          r8gav      ADAS      Total gaunt factor for free-free and
C                               quasi-continuous free-bound transitions
C          r8giiiav   ADAS      Maxwellian averaged free-free Gaunt factors
C
C
C  NOTES :  Based on Lorne Horton's original continuo program but
C           coefficients, rather than emission, are returned. 
C           
C
C
C  AUTHOR:  Martin O'Mullane
C  DATE  :  02-03-2005
C
C
C
C  VERSION : 1.1
C  DATE    : 02-03-2005
C  MODIFIED: Martin O'Mullane
C            - First version
C
C  VERSION : 1.2
C  DATE    : 02-03-2005
C  MODIFIED: Martin O'Mullane
C            - Alter comments to note that contin is the sum of
C              free-free and free-bound continuum emission.
C
C-----------------------------------------------------------------------
C
C-----------------------------------------------------------------------
      INTEGER             IZ0,         IZ1
      REAL*8              CONTFF,      CONTIN,      TEV,         WAVE