SUBROUTINE ADI2_UNMAPCOL( HDUID, BCOL, TYPE, MODE, PTR, STATUS )
*+
*  Name:
*     ADI2_UNMAPCOL

*  Purpose:
*     Unmap the BINTABLE column with specified type and mode

*  Language:
*     Starlink Fortran

*  Invocation:
*     CALL ADI2_UNMAPCOL( HDUID, BCOL, TYPE, MODE, PTR, STATUS )

*  Description:
*     {routine_description}

*  Arguments:
*     HDUID = INTEGER (given)
*        ADI identifier of FITShdu object
*     BCOL = INTEGER (given)
*        Binary column number holding data
*     TYPE = CHARACTER*(*) (given)
*        Type for mapping
*     MODE = CHARACTER*(*) (given)
*        Mapping access mode
*     PTR = INTEGER (given)
*        The mapped memory address
*     STATUS = INTEGER (given and returned)
*        The global status.

*  Examples:
*     {routine_example_text}
*        {routine_example_description}

*  Pitfalls:
*     {pitfall_description}...

*  Notes:
*     {routine_notes}...

*  Prior Requirements:
*     {routine_prior_requirements}...

*  Side Effects:
*     {routine_side_effects}...

*  Algorithm:
*     {algorithm_description}...

*  Accuracy:
*     {routine_accuracy}

*  Timing:
*     {routine_timing}

*  External Routines Used:
*     {name_of_facility_or_package}:
*        {routine_used}...

*  Implementation Deficiencies:
*     {routine_deficiencies}...

*  References:
*     ADI Subroutine Guide : http://www.sr.bham.ac.uk/asterix-docs/Programmer/Guides/adi.html

*  Keywords:
*     package:adi, usage:private

*  Copyright:
*     Copyright (C) University of Birmingham, 1995

*  Authors:
*     DJA: David J. Allan (Jet-X, University of Birmingham)
*     {enter_new_authors_here}

*  History:
*     11 Sep 1995 (DJA):
*        Original version.
*     {enter_changes_here}

*  Bugs:
*     {note_any_bugs_here}

*-
      
*  Type Definitions:
      IMPLICIT NONE              ! No implicit typing

*  Global Constants:
      INCLUDE 'SAE_PAR'          ! Standard SAE constants
      INCLUDE 'PRM_PAR'

*  Arguments Given:
      INTEGER			HDUID, BCOL, PTR
      CHARACTER*(*)		TYPE, MODE

*  Status:
      INTEGER 			STATUS             	! Global status

*  Local Variables:
      INTEGER			DIM			! # data elements
      INTEGER			FSTAT			! FITSIO status code
      INTEGER			LUN			! Logical i/o unit

      LOGICAL			ANYF			! Any null values?
*.

*  Check inherited global status.
      IF ( STATUS .NE. SAI__OK ) RETURN

*  Get number of rows in table
      CALL ADI2_HGKYI( HDUID, 'NAXIS2', DIM, STATUS )

*  Locate logical unit
      CALL ADI2_HDULUN( HDUID, LUN, STATUS )

*  Write column data back to file
      IF ( MODE .NE. 'READ' ) THEN
        FSTAT = 0
        IF ( TYPE .EQ. 'BYTE' ) THEN
          CALL FTGCVB( LUN, BCOL, 1, 1, DIM, VAL__BADB, %VAL(PTR), ANYF,
     :                 FSTAT )

        ELSE IF ( TYPE .EQ. 'WORD' ) THEN
          CALL FTGCVI( LUN, BCOL, 1, 1, DIM, VAL__BADW, %VAL(PTR), ANYF,
     :                 FSTAT )

        ELSE IF ( TYPE .EQ. 'INTEGER' ) THEN
          CALL FTGCVJ( LUN, BCOL, 1, 1, DIM, VAL__BADI, %VAL(PTR), ANYF,
     :                 FSTAT )

        ELSE IF ( TYPE .EQ. 'REAL' ) THEN
          CALL FTGCVE( LUN, BCOL, 1, 1, DIM, VAL__BADR, %VAL(PTR), ANYF,
     :                 FSTAT )

        ELSE IF ( TYPE .EQ. 'DOUBLE' ) THEN
          CALL FTGCVD( LUN, BCOL, 1, 1, DIM, VAL__BADD, %VAL(PTR), ANYF,
     :                 FSTAT )

        ELSE IF ( TYPE .EQ. 'LOGICAL' ) THEN
          CALL FTGCL( LUN, BCOL, 1, 1, DIM, %VAL(PTR), FSTAT )
 
        END IF
      END IF

*  Release the mapped data
      CALL DYN_UNMAP( PTR, STATUS )

*  Report any errors
      IF ( STATUS .NE. SAI__OK ) THEN
        CALL AST_REXIT( 'ADI2_UNMAPCOL', STATUS )
      END IF

      END