Procedure

     SYENQI ( Enqueue a value onto a symbol )

     SUBROUTINE SYENQI ( NAME, VALUE, TABSYM, TABPTR, TABVAL )

Abstract

     Enqueue a value onto a particular symbol in an integer
     symbol table. If the symbol is not in the table, a new one
     is created.

Required_Reading

     SYMBOLS

Keywords

     SYMBOLS

Declarations

     IMPLICIT NONE

     INTEGER               LBCELL
     PARAMETER           ( LBCELL = -5 )

     CHARACTER*(*)         NAME
     INTEGER               VALUE
     CHARACTER*(*)         TABSYM     ( LBCELL:* )
     INTEGER               TABPTR     ( LBCELL:* )
     INTEGER               TABVAL     ( LBCELL:* )

Brief_I/O

     VARIABLE  I/O  DESCRIPTION
     --------  ---  --------------------------------------------------
     NAME       I   Name of the symbol onto which the value is
                    enqueued.
     VALUE      I   Value to be enqueued.
     TABSYM,
     TABPTR,
     TABVAL    I-O  Components of the symbol table.

Detailed_Input

     NAME     is the name of the symbol onto which the value is to
              be enqueued. If NAME is not in the symbol table, a new
              symbol having the value VALUE is created.

     VALUE    is the value to be enqueued onto the symbol, NAME.
              The value is inserted in the value table after the
              last value associated with the symbol.

     TABSYM,
     TABPTR,
     TABVAL   are the components of an integer symbol table.
              The symbol NAME may or may not be in the symbol
              table.

Detailed_Output

     TABSYM,
     TABPTR,
     TABVAL   are the components of an integer symbol table.

              On output, the value table contains the new value in
              addition to the old values associated with the symbol
              NAME. The pointer table is updated to reflect the change
              in the dimension of the symbol.

Parameters

     None.

Exceptions

     1)  If the addition of the new value to the symbol table causes an
         overflow in the value table, the error SPICE(VALUETABLEFULL)
         is signaled.

Files

     None.

Particulars

     If the symbol NAME is not in the symbol table, a new symbol is
     created which has the value VALUE.

Examples

     The contents of the symbol table are:

        books   -->   5
        erasers -->   6
        pencils -->  12
        pens    -->  10
                     12
                     24

     The call,

        CALL SYENQI ( 'books', 12, TABSYM, TABPTR, TABVAL )

     produces the symbol table:

        books   -->   5
                     12
        erasers -->   6
        pencils -->  12
        pens    -->  10
                     12
                     24

     The next call,

        CALL SYENQI ( 'desks', 23, TABSYM, TABPTR, TABVAL )

     then produces the symbol table:

        books   -->   5
                     12
        desks   -->  23
        erasers -->   6
        pencils -->  12
        pens    -->  10
                     12
                     24

     Notice that the symbol "desks" was created by the last call.

Restrictions

     None.

Literature_References

     None.

Author_and_Institution

     J. Diaz del Rio    (ODC Space)
     H.A. Neilan        (JPL)
     W.L. Taber         (JPL)
     I.M. Underwood     (JPL)

Version

    SPICELIB Version 1.1.0, 08-APR-2021 (JDR)

        Added IMPLICIT NONE statement.

        Edited the header to comply with NAIF standard.

    SPICELIB Version 1.0.1, 10-MAR-1992 (WLT)

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

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