Procedure

     DAFRS ( DAF, replace summary )

     ENTRY DAFRS ( SUM )

Abstract

     Change the summary for the current array in the current DAF.

Required_Reading

     DAF

Keywords

     FILES

Declarations

    DOUBLE PRECISION      SUM    ( * )

Brief_I/O

     VARIABLE  I/O  DESCRIPTION
     --------  ---  --------------------------------------------------
     SUM        I   New summary for current array.

Detailed_Input

     SUM      is the new summary for the current array. This
              replaces the existing summary. However, the addresses
              (the final two integer components) of the original
              summary are not changed.

Detailed_Output

     None.

Parameters

     None.

Exceptions

     1)  If this routine is called when no search is in progress in the
         the current DAF, the error SPICE(DAFNOSEARCH) is signaled.

     2)  If the DAF containing the "current" array has actually been
         closed, an error is signaled by a routine in the call tree of
         this routine.

     3)  If the DAF containing the "current" array is not open for
         writing, an error is signaled by a routine in the call tree of
         this routine.

     4)  If no array is current in the current DAF, the error
         SPICE(NOCURRENTARRAY) is signaled. There is no current array
         when a search is started by DAFBFS or DAFBBS, but no calls to
         DAFFNA or DAFFPA have been made yet, or whenever DAFFNA or
         DAFFPA return the value .FALSE. in the FOUND argument.

Files

     None.

Particulars

     See DAFFA.

Examples

     See $Examples in DAFFA.

Restrictions

     1)  Calls that do or may change DAF addresses of DAF summaries,
         names, or data of a given DAF file should not be made during
         a search of that file initiated by either DAFBFS or DAFBBS.
         No such changes should be made between the start of a search
         and calls to any entry point that reads or writes to the
         summary of the "current array" found by that search, or
         that returns a "found" flag indicating whether the current
         array exists.

         Changing the size of the comment area while a search is in
         progress can invalidate record numbers stored in local data
         structures of this routine. This can cause corrupted array
         summaries and names to be returned upon read access and file
         corruption to occur upon write access.

         Adding arrays (aka "segments") while either a forward or
         backward search is in progress can cause the search to miss
         the new segments.

Literature_References

     None.

Author_and_Institution

     N.J. Bachman       (JPL)
     J. Diaz del Rio    (ODC Space)
     H.A. Neilan        (JPL)
     W.L. Taber         (JPL)
     I.M. Underwood     (JPL)
     E.D. Wright        (JPL)

Version

    SPICELIB Version 2.0.3, 27-OCT-2021 (JDR) (NJB)

        Fixed typo in the $Declarations section.

        Edited the header to comply with NAIF standard.

        Fixed typo in $Exceptions entry #4: DAFFPA is used to find the
        previous array, not the non existing API DAFBNA.

        Updated $Restrictions section.

    SPICELIB Version 2.0.2, 18-AUG-2011 (EDW)

        Eliminated unneeded $Revisions section.

        Removed the obsolete Reference citation to "NAIF
        Document 167.0."

    SPICELIB Version 2.0.1, 10-MAR-1992 (WLT)

        Comment section for permuted index source lines was added
        following the header.

    SPICELIB Version 2.0.0, 04-SEP-1991 (NJB) (WLT)

        Updated to support simultaneous searches of multiple DAFs.
        Bug fix made to handle case of having no current array.

        This routine now operates on the current DAF---the one at
        the head of the active list. All saved state variables
        used by this routine are now part of the state table, or
        its associated set of pointers.

        In addition, this routine now checks whether an array
        is current before trying to read its summary. The routine
        previously crashed under these conditions.

    SPICELIB Version 1.0.1, 22-MAR-1990 (HAN)

        Literature references added to the header.

    SPICELIB Version 1.0.0, 31-JAN-1990 (IMU)