CALL SEQUENCE...
       splinv  SPIN SPOUT OUTPUT
 
 
      DESCRIPTION...
       splinv - CALCULATES NEG-INVERSE LAPLACIAN OF SPECTRAL INPUT FILE
 
 
      AUTHORS - B.Dugas AND S.J.Lambert, SEPT 13/86.
      LAST REVISION: $Header: /home/cvs/RMNLIB/utils/rdiag/lspgm/splinv.ptn,v 4.11 2014/09/25 20:20:53 dugas Exp $
 
 
      PURPOSE - CALCULATES THE NEGATIVE OF THE INVERSE LAPLACIAN IN 
                FILE (SPOUT) OF THE INPUT FILE (SPIN) BY MULTIPLYING 
                IT BY A**2/(N(N+1))
 
      NOTE    - ALL RECORDS ARE TO BE OF THE SAME SIZE AND TYPE.
 
 
      INPUT FILE...
       SPIN  =  CCRN FORMAT SPECTRAL FILE
 
      OUTPUT FILE...
       SPOUT = FILE CONTAINING -INVERSE LAPLACIAN OF THE INPUT FILE
 
 
      EXIT CONDITIONS...
       0 NO PROBLEMS
       1 PROBLEMS READING IN
       2 UNABLE TO DETERMINE SPECTRAL PARAMETRES
       3 MORE THAN ONE SIZE