W3FI82

The W3FI82 routine converts to array of second differences and
           returns the original first value and the first
           first-difference as separate values.

USAGE:    CALL W3FI82 (IFLD,FVAL1,FDIFF1,NPTS)

   Input argument list:
      IFLD     - INTEGER INPUT ARRAY
      NPTS     - NUMBER OF POINTS IN ARRAY

   Output argument list:
      IFLD     - SECOND DIFFERENCED FIELD
      FVAL1    - FLOATING POINT ORIGINAL FIRST VALUE
      FDIFF1   -     "      "   FIRST FIRST-DIFFERENCE

REMARKS:
        Subprogram can be called from a multiprocessing environment.

 
W3lib.tar Library contains Fortran 90 decoder/encoder routines for GRIB edition 1. (Fortran90)
Date posted: 2/22/2007