CALL SEQUENCE...
       spcdns  ALPHA BETA ANS OUTPUT
 
 
      DESCRIPTION...
       spcdns  - CONTRIBUTION OF SPH. HAR. COEF. TO GLOBAL MEAN OF PRODUCT
 
 
      AUTHORS - S.Lambert AND J.D.Henderson, NOV/79.
      LAST REVISION: $Header: /home/cvs/RMNLIB/utils/rdiag/lspgm/spcdns.ptn,v 4.10 2014/09/25 20:20:53 dugas Exp $
 
 
      PURPOSE - COMPUTES THE CONTRIBUTION OF EACH PAIR OF SPHERICAL
                HARMONIC COEFFICIENTS TO THE GLOBAL AVERAGE OF THE PRODUCT
                OF THE TWO INPUT FILES.
 
 
      INPUT FILES...
        ALPHA = FIRST  SPECTRAL FILE
        BETA  = SECOND SPECTRAL FILE
 
      OUTPUT FILE...
        ANS   = CONTRIBUTIONS TO THE GLOBAL AVERAGE
 
 
      EXIT CONDITIONS...
        0 NO PROBLEMS
        1 ERROR READING ALPHA
        2 ERROR READING BETA
        3 ALPHA AND BETA NOT THE SAME SIZE.