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!****h* ROBODoc/H5L
!
! NAME
!  MODULE H5L
!
! PURPOSE
!  This file contains Fortran interfaces for H5L functions.
!
! COPYRIGHT
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!   Copyright by The HDF Group.                                               *
!   Copyright by the Board of Trustees of the University of Illinois.         *
!   All rights reserved.                                                      *
!                                                                             *
!   This file is part of HDF5.  The full HDF5 copyright notice, including     *
!   terms governing use, modification, and redistribution, is contained in    *
!   the COPYING file, which can be found at the root of the source code       *
!   distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
!   If you do not have access to either file, you may request a copy from     *
!   help@hdfgroup.org.                                                        *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
!
! NOTES
!       _____ __  __ _____   ____  _____ _______       _   _ _______
!      |_   _|  \/  |  __ \ / __ \|  __ \__   __|/\   | \ | |__   __|
! ****   | | | \  / | |__) | |  | | |__) | | |  /  \  |  \| |  | |    ****
! ****   | | | |\/| |  ___/| |  | |  _  /  | | / /\ \ | . ` |  | |    ****
! ****  _| |_| |  | | |    | |__| | | \ \  | |/ ____ \| |\  |  | |    ****
!      |_____|_|  |_|_|     \____/|_|  \_\ |_/_/    \_\_| \_|  |_|
!
!  If you add a new H5L function you must add the function name to the
!  Windows dll file 'hdf5_fortrandll.def.in' in the fortran/src directory.
!  This is needed for Windows based operating systems.
!
!*****

MODULE H5L

  USE, INTRINSIC :: ISO_C_BINDING, ONLY : C_PTR, C_FUNPTR, C_CHAR, C_INT64_T, C_INT
  USE H5GLOBAL

  IMPLICIT NONE

!****t* H5L (F03)/h5l_info_t
!
! Fortran2003 Derived Type:
!
  TYPE, bind(c) :: union_t
     TYPE(H5O_TOKEN_T_F) :: token
     INTEGER(size_t)  :: val_size
  END TYPE union_t

  TYPE, bind(c) :: h5l_info_t
     INTEGER(c_int) :: type ! H5L_type_t     type
!       LOGICAL(c_bool) :: corder_valid ! hbool_t        corder_valid
     INTEGER(c_int64_t) :: corder ! int64_t        corder;
     INTEGER(c_int) :: cset ! H5T_cset_t     cset;
     TYPE(union_t) :: u
  END TYPE h5l_info_t

!*****

!type specifies the link class. Valid values include the following:
!     	H5L_TYPE_HARD 	  Hard link
!     	H5L_TYPE_SOFT 	  Soft link
!     	H5L_TYPE_EXTERNAL External link
!     	H5L_TYPE_ERROR 	  Error 
!cset specifies the character set in which the link name is encoded. Valid values include the following:
!     	H5T_CSET_ASCII 	US ASCII
!     	H5T_CSET_UTF8   UTF-8 Unicode encoding 

CONTAINS

!
!****s* H5L/h5lcopy_f
!
! NAME
!  h5lcopy_f
!
! PURPOSE
!  Copies a link from one location to another.
!
! INPUTS
!  src_loc_id 	 - Location identifier of the source link
!  src_name 	 - Name of the link to be copied
!  dest_loc_id 	 - Location identifier specifying the destination of the copy
!  dest_name 	 - Name to be assigned to the NEW copy
!  loc_id 	 - Identifier of the file or group containing the object
!  name 	 - Name of the link to delete
!
! OUTPUTS
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lcpl_id 	 - Link creation property list identifier
!  lapl_id 	 - Link access property list identifier
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 27, 2008
!
! SOURCE
  SUBROUTINE h5lcopy_f(src_loc_id, src_name, dest_loc_id, dest_name, hdferr, &
       lcpl_id, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: src_loc_id  ! Location identifier of the source link
    CHARACTER(LEN=*), INTENT(IN) :: src_name   ! Name of the link to be copied
    INTEGER(HID_T), INTENT(IN) :: dest_loc_id ! Location identifier specifying the destination of the copy
    CHARACTER(LEN=*), INTENT(IN) :: dest_name ! Name to be assigned to the NEW copy

    INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                          ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lcpl_id ! Link creation property list identifier
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id ! Link access property list identifier
!*****
    INTEGER(HID_T) :: lcpl_id_default
    INTEGER(HID_T) :: lapl_id_default

    INTEGER(SIZE_T) :: src_namelen
    INTEGER(SIZE_T) :: dest_namelen

    INTERFACE
       INTEGER FUNCTION h5lcopy_c(src_loc_id, src_name, src_namelen, dest_loc_id, dest_name, dest_namelen, &
            lcpl_id_default, lapl_id_default) BIND(C,name='h5lcopy_c')
         IMPORT ::  c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: src_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: src_name
         INTEGER(HID_T), INTENT(IN) :: dest_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: dest_name

         INTEGER(HID_T) :: lcpl_id_default
         INTEGER(HID_T) :: lapl_id_default

         INTEGER(SIZE_T) :: src_namelen
         INTEGER(SIZE_T) :: dest_namelen
       END FUNCTION h5lcopy_c
    END INTERFACE

    src_namelen  = LEN(src_name)
    dest_namelen = LEN(dest_name)

    lcpl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lcpl_id)) lcpl_id_default = lcpl_id
    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lcopy_c(src_loc_id, src_name, src_namelen, dest_loc_id, dest_name, dest_namelen, &
         lcpl_id_default, lapl_id_default)

  END SUBROUTINE h5lcopy_f

!
!****s* H5L/h5ldelete_f
!
! NAME
!  h5ldelete_f
!
! PURPOSE
!  Removes a link from a group.
!
! INPUTS
!  loc_id 	 - Identifier of the file or group containing the object
!  name 	 - Name of the link to delete
!
! OUTPUTS
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lapl_id 	 - Link access property list identifier
!
! AUTHOR
!  M. Scot Breitenfeld
!  January, 2008
!
! SOURCE
  SUBROUTINE h5ldelete_f(loc_id, name, hdferr, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: loc_id  ! Identifier of the file or group containing the object
    CHARACTER(LEN=*), INTENT(IN) :: name  ! Name of the link to delete
    INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                          ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id ! Link access property list identifier
!*****
    INTEGER(HID_T) :: lapl_id_default
    INTEGER(SIZE_T) :: namelen

    INTERFACE
       INTEGER FUNCTION h5ldelete_c(loc_id, name, namelen, lapl_id_default) BIND(C,name='h5ldelete_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: name
         INTEGER(HID_T) :: lapl_id_default
         INTEGER(SIZE_T) :: namelen
       END FUNCTION h5ldelete_c
    END INTERFACE

    namelen = LEN(name)

    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5ldelete_c(loc_id, name, namelen, lapl_id_default)

  END SUBROUTINE h5ldelete_f

!
!****s* H5L/H5Lcreate_soft_f
!
! NAME
!  H5Lcreate_soft_f
!
! PURPOSE
!  Creates a soft link to an object.
!
! INPUTS
!  target_path 	 - Path to the target object, which is not required to exist.
!  link_loc_id 	 - The file or group identifier for the new link.
!  link_name 	 - The name of the new link.
!
! OUTPUTS
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lcpl_id 	 - Link creation property list identifier.
!  lapl_id 	 - Link access property list identifier.
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 20, 2008
!
! SOURCE
  SUBROUTINE h5lcreate_soft_f(target_path, link_loc_id, link_name, hdferr, lcpl_id, lapl_id)
    IMPLICIT NONE
    CHARACTER(LEN=*), INTENT(IN) :: target_path   ! Path to the target object, which is not required to exist.
    INTEGER(HID_T), INTENT(IN) :: link_loc_id     ! The file or group identifier for the new link.
    CHARACTER(LEN=*), INTENT(IN) :: link_name     ! The name of the new link.
    INTEGER, INTENT(OUT) :: hdferr                ! Error code:
                                                  !   0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lcpl_id ! Link creation property list identifier.
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id ! Link access property list identifier.
!*****
    INTEGER(HID_T) :: lcpl_id_default
    INTEGER(HID_T) :: lapl_id_default
    INTEGER(SIZE_T) :: target_path_len
    INTEGER(SIZE_T) :: link_name_len

    INTERFACE
       INTEGER FUNCTION h5lcreate_soft_c(target_path, target_path_len, &
            link_loc_id, &
            link_name,link_name_len, &
            lcpl_id_default, lapl_id_default ) BIND(C,NAME='h5lcreate_soft_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: target_path
         INTEGER(SIZE_T) :: target_path_len
         INTEGER(HID_T), INTENT(IN) ::   link_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: link_name
         INTEGER(SIZE_T) :: link_name_len
         INTEGER(HID_T) :: lcpl_id_default
         INTEGER(HID_T) :: lapl_id_default
       END FUNCTION h5lcreate_soft_c
    END INTERFACE

    target_path_len = LEN(target_path)
    link_name_len = LEN(link_name)

    lcpl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lcpl_id)) lcpl_id_default = lcpl_id
    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lcreate_soft_c(target_path, target_path_len,&
         link_loc_id, &
         link_name, link_name_len, &
         lcpl_id_default, lapl_id_default )

  END SUBROUTINE h5lcreate_soft_f

!
!****s* H5L/H5Lcreate_hard_f
!
! NAME
!  H5Lcreate_hard_f
!
! PURPOSE
!  Creates a hard link to an object.
!
! INPUTS
!
!  obj_loc_id 	 - The file or group identifier for the target object.
!  obj_name 	 - Name of the target object, which must already exist.
!  link_loc_id 	 - The file or group identifier for the new link.
!  link_name 	 - The name of the new link.
!
! OUTPUTS
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lcpl_id 	 - Link creation property list identifier.
!  lapl_id 	 - Link access property list identifier.
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 27, 2008
!
! SOURCE
  SUBROUTINE h5lcreate_hard_f(obj_loc_id, obj_name, link_loc_id, link_name, hdferr, lcpl_id, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: obj_loc_id  ! The file or group identifier for the target object.
    CHARACTER(LEN=*), INTENT(IN) :: obj_name  ! Name of the target object, which must already exist.
    INTEGER(HID_T), INTENT(IN) :: link_loc_id ! The file or group identifier for the new link.
    CHARACTER(LEN=*), INTENT(IN) :: link_name ! The name of the new link.

    INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                          ! 0 on success and -1 on failure

    INTEGER(HID_T), OPTIONAL, INTENT(IN) ::   lcpl_id         ! Link creation property list identifier.
    INTEGER(HID_T), OPTIONAL, INTENT(IN) ::   lapl_id         ! Link access property list identifier.
!*****
    INTEGER(HID_T) :: lcpl_id_default
    INTEGER(HID_T) :: lapl_id_default

    INTEGER(SIZE_T) :: obj_namelen
    INTEGER(SIZE_T) :: link_namelen

    INTERFACE
       INTEGER FUNCTION h5lcreate_hard_c(obj_loc_id, obj_name, obj_namelen, &
            link_loc_id, link_name, link_namelen, lcpl_id_default, lapl_id_default) BIND(C,NAME='h5lcreate_hard_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: obj_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: obj_name
         INTEGER(HID_T), INTENT(IN) :: link_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: link_name
         INTEGER(SIZE_T) :: obj_namelen
         INTEGER(SIZE_T) :: link_namelen
         INTEGER(HID_T) :: lcpl_id_default
         INTEGER(HID_T) :: lapl_id_default
       END FUNCTION h5lcreate_hard_c
    END INTERFACE
    obj_namelen = LEN(obj_name)
    link_namelen = LEN(link_name)

    lcpl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lcpl_id)) lcpl_id_default = lcpl_id
    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lcreate_hard_c(obj_loc_id, obj_name, obj_namelen, &
            link_loc_id, link_name, link_namelen, lcpl_id_default, lapl_id_default)

  END SUBROUTINE h5lcreate_hard_f

!
!****s* H5L/H5Lcreate_external_f
!
! NAME
!  H5Lcreate_external_f
!
! PURPOSE
!  Creates a soft link to an object in a different file.
!
! INPUTS
!
!  file_name 	 - Name of the file containing the target object. Neither the file nor the target object is
!  required to exist. May be the file the link is being created in.
!  obj_name 	 - Path within the target file to the target object.
!  link_loc_id 	 - The file or group identifier for the new link.
!  link_name 	 - The name of the new link.
!
! OUTPUTS
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lcpl_id 	 - Link creation property list identifier.
!  lapl_id 	 - Link access property list identifier.
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 27, 2008
! SOURCE
  SUBROUTINE h5lcreate_external_f(file_name, obj_name, link_loc_id, link_name, hdferr, lcpl_id, lapl_id)
    IMPLICIT NONE
    CHARACTER(LEN=*), INTENT(IN) :: file_name ! Name of the file containing the target object. Neither
                                              ! the file nor the target object is required to exist.
                                              ! May be the file the link is being created in.
    CHARACTER(LEN=*), INTENT(IN) :: obj_name  ! Name of the target object, which must already exist.
    INTEGER(HID_T), INTENT(IN) :: link_loc_id ! The file or group identifier for the new link.
    CHARACTER(LEN=*), INTENT(IN) :: link_name ! The name of the new link.

    INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                          ! 0 on success and -1 on failure

    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lcpl_id ! Link creation property list identifier.
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id ! Link access property list identifier.
!*****
    INTEGER(HID_T) :: lcpl_id_default
    INTEGER(HID_T) :: lapl_id_default

    INTEGER(SIZE_T) :: file_namelen
    INTEGER(SIZE_T) :: obj_namelen
    INTEGER(SIZE_T) :: link_namelen

    INTERFACE
       INTEGER FUNCTION h5lcreate_external_c(file_name, file_namelen, obj_name, obj_namelen, &
            link_loc_id, link_name, link_namelen, lcpl_id_default, lapl_id_default) BIND(C,NAME='h5lcreate_external_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: file_name
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: obj_name
         INTEGER(HID_T), INTENT(IN) :: link_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: link_name
         INTEGER(SIZE_T) :: file_namelen
         INTEGER(SIZE_T) :: obj_namelen
         INTEGER(SIZE_T) :: link_namelen
         INTEGER(HID_T) :: lcpl_id_default
         INTEGER(HID_T) :: lapl_id_default
       END FUNCTION h5lcreate_external_c
    END INTERFACE
    file_namelen = LEN(file_name)
    obj_namelen = LEN(obj_name)
    link_namelen = LEN(link_name)

    lcpl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lcpl_id)) lcpl_id_default = lcpl_id
    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lcreate_external_c(file_name, file_namelen, obj_name, obj_namelen, &
            link_loc_id, link_name, link_namelen, lcpl_id_default, lapl_id_default)

  END SUBROUTINE h5lcreate_external_f

!
!****s* H5L/h5ldelete_by_idx_f
!
! NAME
!  h5ldelete_by_idx_f
!
! PURPOSE
!  Removes the nth link in a group.
! INPUTS
!  loc_id 	 - File or group identifier specifying location of subject group
!  group_name 	 - Name of subject group
!  index_field 	 - Type of index; Possible values are:
!                    H5_INDEX_UNKNOWN_F = -1  - Unknown index type
!                    H5_INDEX_NAME_F 	      - Index on names
!                    H5_INDEX_CRT_ORDER_F     - Index on creation order
!                    H5_INDEX_N_F 	      - Number of indices defined
!
!  order 	 - Order within field or index; Possible values are:
!                    H5_ITER_UNKNOWN_F 	 - Unknown order
!                    H5_ITER_INC_F 	 - Increasing order
!                    H5_ITER_DEC_F 	 - Decreasing order
!                    H5_ITER_NATIVE_F 	 - No particular order, whatever is fastest
!                    H5_ITER_N_F 	 - Number of iteration orders
!
!  n 	         - Link for which to retrieve information
! OUTPUTS
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lapl_id 	 - Link access property list
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 29, 2008
! SOURCE
  SUBROUTINE h5ldelete_by_idx_f(loc_id, group_name, index_field, order, n, hdferr, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: loc_id       ! Identifer for object to which attribute is attached
    CHARACTER(LEN=*), INTENT(IN) :: group_name ! Name of object, relative to location,
                                               !  from which attribute is to be removed
    INTEGER, INTENT(IN) :: index_field         ! Type of index; Possible values are:
                                               !    H5_INDEX_UNKNOWN_F   - Unknown index type
                                               !    H5_INDEX_NAME_F      - Index on names
                                               !    H5_INDEX_CRT_ORDER_F - Index on creation order
                                               !    H5_INDEX_N_F	      - Number of indices defined
    INTEGER, INTENT(IN) :: order               ! Order in which to iterate over index; Possible values are:
                                               !    H5_ITER_UNKNOWN_F  - Unknown order
                                               !    H5_ITER_INC_F      - Increasing order
                                               !    H5_ITER_DEC_F      - Decreasing order
                                               !    H5_ITER_NATIVE_F   - No particular order, whatever is fastest
                                               !    H5_ITER_N_F	    - Number of iteration orders
    INTEGER(HSIZE_T), INTENT(IN) :: n      ! Offset within index
    INTEGER, INTENT(OUT) :: hdferr         ! Error code:
                                           ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id     ! Link access property list
!*****
    INTEGER(HID_T) :: lapl_id_default
    INTEGER(SIZE_T) :: group_namelen

    INTERFACE
       INTEGER FUNCTION h5ldelete_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, lapl_id_default) &
            BIND(C,NAME='h5ldelete_by_idx_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T, HSIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: group_name
         INTEGER, INTENT(IN) :: index_field
         INTEGER, INTENT(IN) :: order
         INTEGER(HSIZE_T), INTENT(IN) :: n
         INTEGER(HID_T) :: lapl_id_default
         INTEGER(SIZE_T) :: group_namelen
       END FUNCTION h5ldelete_by_idx_c
    END INTERFACE

    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    group_namelen = LEN(group_name)
    hdferr = h5ldelete_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, lapl_id_default)

  END SUBROUTINE h5ldelete_by_idx_f

!
!****s* H5L/H5Lexists_f
!
! NAME
!  H5Lexists_f
!
! PURPOSE
!  Check if a link with a particular name exists in a group.
!
! INPUTS
!  loc_id 	 - Identifier of the file or group to query.
!  name 	 - Link name to check
!
! OUTPUTS
!  link_exists 	 - link exists status (.TRUE.,.FALSE.)
!  hdferr 	 - Returns 0 if successful and -1 if fails
! OPTIONAL PARAMETERS
!  lapl_id 	 - Link access property list identifier.
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 29, 2008
!
! SOURCE
  SUBROUTINE h5lexists_f(loc_id, name, link_exists, hdferr, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: loc_id  ! Identifier of the file or group to query.
    CHARACTER(LEN=*), INTENT(IN) :: name  ! Link name to check.
    LOGICAL, INTENT(OUT) :: link_exists   ! .TRUE. if exists, .FALSE. otherwise
    INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                          ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id
                                          ! Link access property list identifier.
!*****
    INTEGER :: link_exists_c
    INTEGER(HID_T)  :: lapl_id_default
    INTEGER(SIZE_T) :: namelen

    INTERFACE
       INTEGER FUNCTION h5lexists_c(loc_id, name, namelen, lapl_id_default, link_exists_c) &
            BIND(C,NAME='h5lexists_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: name
         INTEGER(SIZE_T), INTENT(IN) :: namelen
         INTEGER, INTENT(OUT) :: link_exists_c
         INTEGER(HID_T) :: lapl_id_default

       END FUNCTION h5lexists_c
    END INTERFACE

    namelen = LEN(name)

    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lexists_c(loc_id, name, namelen, lapl_id_default, link_exists_c)

    link_exists = .FALSE.
    IF(link_exists_c.GT.0) link_exists = .TRUE.

  END SUBROUTINE h5lexists_f

!
!****s* H5L/h5lget_info_f
!
! NAME
!  h5lget_info_f
!
! PURPOSE
!  Returns information about a link.
!
! INPUTS
!  link_loc_id 	 - File or group identifier.
!  link_name 	 - Name of the link for which information is being sought
!
! OUTPUTS  
!            NOTE: In C these are contained in the structure H5L_info_t
!
!  cset 	 - indicates the character set used for link’s name.
!  corder 	 - specifies the link’s creation order position.
!  corder_valid  - indicates whether the value in corder is valid.
!  link_type 	 - specifies the link class:
!                    H5L_TYPE_HARD_F 	 - Hard link
!                    H5L_TYPE_SOFT_F 	 - Soft link
!                    H5L_TYPE_EXTERNAL_F - External link
!                    H5L_TYPE_ERROR_ F   - Error
!  token 	 - If the link is a hard link, token specifies the object token that the link points to
!  val_size 	 - If the link is a symbolic link, val_size will be the length of the link value, e.g., 
!                  the length of the name of the pointed-to object with a null terminator. 
!  hdferr 	 - Returns 0 if successful and -1 if fails
!
! OPTIONAL PARAMETERS
!  lapl_id 	 - Link access property list
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 29, 2008
!
! HISTORY
!   Changed the link_type names to match those in C (bug 1720) from,
!   H5L_LINK_HARD_F, H5L_LINK_SOFT_F,H5L_LINK_EXTERNAL_F,H5L_LINK_ERROR_F
!   to
!   H5L_TYPE_HARD_F, H5L_TYPE_SOFT_F,H5L_TYPE_EXTERNAL_F,H5L_TYPE_ERROR_F
!   MSB January 8, 2010.
!
! SOURCE
  SUBROUTINE h5lget_info_f(link_loc_id, link_name, &
       cset, corder, f_corder_valid, link_type, token, val_size, &
       hdferr, lapl_id)
    IMPLICIT NONE

    INTEGER(HID_T), INTENT(IN) :: link_loc_id ! File or group identifier.
    CHARACTER(LEN=*), INTENT(IN) :: link_name ! Name of the link for which information is being sought

! OUTPUTS  NOTE: In C these are contained in the structure H5L_info_t
    INTEGER, INTENT(OUT) :: cset ! Indicates the character set used for the link’s name.
    INTEGER, INTENT(OUT) :: corder ! Specifies the link’s creation order position.
    LOGICAL, INTENT(OUT) :: f_corder_valid ! Indicates whether the value in corder is valid.
    INTEGER, INTENT(OUT) :: link_type ! Specifies the link class:
     	                              !  H5L_TYPE_HARD_F      - Hard link
     	                              !  H5L_TYPE_SOFT_F      - Soft link
     	                              !  H5L_TYPE_EXTERNAL_F  - External link
     	                              !  H5L_TYPE_ERROR _F    - Error
    TYPE(H5O_TOKEN_T_F), INTENT(OUT), TARGET :: token ! If the link is a hard link, token specifies the object token that the link points to
    INTEGER(SIZE_T), INTENT(OUT) :: val_size ! If the link is a symbolic link, val_size will be the length of the link value, e.g., 
                                             ! the length of the name of the pointed-to object with a null terminator. 
    INTEGER, INTENT(OUT) :: hdferr       ! Error code:
                                         ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id  ! Link access property list
!*****
    INTEGER(SIZE_T) :: link_namelen
    INTEGER(HID_T) :: lapl_id_default
    INTEGER :: corder_valid

    INTERFACE
       INTEGER FUNCTION h5lget_info_c(link_loc_id, link_name, link_namelen, &
            cset, corder, corder_valid, link_type, token, val_size, &
            lapl_id_default) BIND(C,NAME='h5lget_info_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T, H5O_TOKEN_T_F
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: link_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: link_name
         INTEGER, INTENT(OUT) :: cset
         INTEGER, INTENT(OUT) :: corder
         INTEGER, INTENT(OUT) :: link_type
         TYPE(H5O_TOKEN_T_F), INTENT(OUT) :: token
         INTEGER(SIZE_T), INTENT(OUT) :: val_size
         INTEGER(HID_T) :: lapl_id_default
         INTEGER(SIZE_T) :: link_namelen
         INTEGER :: corder_valid
       END FUNCTION h5lget_info_c
    END INTERFACE

    link_namelen = LEN(link_name)

    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lget_info_c(link_loc_id, link_name, link_namelen, cset, &
         corder, corder_valid, link_type, token, val_size, lapl_id_default)

    f_corder_valid =.FALSE.
    IF(corder_valid .EQ. 1) f_corder_valid =.TRUE.

  END SUBROUTINE h5lget_info_f

!
!****s* H5L/h5lget_info_by_idx_f
!
! NAME
!  h5lget_info_by_idx_f
!
! PURPOSE
!  Retrieves metadata for a link in a group, according to the order within a field or index.
!
! INPUTS
!  loc_id 	 - File or group identifier specifying location of subject group
!  group_name 	 - Name of subject group
!  index_field 	 - Index or field which determines the order
!  order 	 - Order within field or index
!  n 	         - Link for which to retrieve information
!
! OUTPUTS  
!            NOTE: In C these are defined as a structure: H5L_info_t
!  corder_valid  - Indicates whether the creation order data is valid for this attribute
!  corder 	 - Is a positive integer containing the creation order of the attribute
!  cset 	 - Indicates the character set used for the attribute’s name 
!  token         - If the link is a hard link, token specifies the object token that the link points to
!  val_size      - If the link is a symbolic link, val_size will be the length of the link value, e.g., 
!                  the length of the name of the pointed-to object with a null terminator.
! hdferr 	 - Returns 0 if successful and -1 if fails
!
! OPTIONAL PARAMETERS
!  lapl_id 	 - Link access property list
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 29, 2008
!
! HISTORY
!   Changed the link_type names to match those in C (bug 1720) from,
!   H5L_LINK_HARD_F, H5L_LINK_SOFT_F,H5L_LINK_EXTERNAL_F,H5L_LINK_ERROR_F
!   to
!   H5L_TYPE_HARD_F, H5L_TYPE_SOFT_F,H5L_TYPE_EXTERNAL_F,H5L_TYPE_ERROR_F
!   MSB January 8, 2010.  
!
! SOURCE
  SUBROUTINE h5lget_info_by_idx_f(loc_id, group_name, index_field, order, n, &
       link_type, f_corder_valid, corder, cset, token, val_size, hdferr, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: loc_id       ! File or group identifier specifying location of subject group  
    CHARACTER(LEN=*), INTENT(IN) :: group_name ! Name of subject group
    INTEGER, INTENT(IN) :: index_field  ! Index or field which determines the order
                                        !    H5_INDEX_UNKNOWN_F   - Unknown index type
                                        !    H5_INDEX_NAME_F      - Index on names
                                        !    H5_INDEX_CRT_ORDER_F - Index on creation order
                                        !    H5_INDEX_N_F	      - Number of indices defined
    INTEGER, INTENT(IN) :: order        ! Order in which to iterate over index; Possible values are:
                                        !    H5_ITER_UNKNOWN_F  - Unknown order
                                        !    H5_ITER_INC_F      - Increasing order
                                        !    H5_ITER_DEC_F      - Decreasing order
                                        !    H5_ITER_NATIVE_F   - No particular order, whatever is fastest
    INTEGER(HSIZE_T), INTENT(IN) :: n   ! Attribute’s position in index
    INTEGER, INTENT(OUT) :: link_type ! Specifies the link class:
     	                              !  H5L_TYPE_HARD_F      - Hard link
     	                              !  H5L_TYPE_SOFT_F      - Soft link
     	                              !  H5L_TYPE_EXTERNAL_F  - External link
     	                              !  H5L_TYPE_ERROR _F    - Error
    LOGICAL, INTENT(OUT) :: f_corder_valid ! Indicates whether the creation order data is valid for this attribute 
    INTEGER, INTENT(OUT) :: corder         ! Is a positive integer containing the creation order of the attribute
    INTEGER, INTENT(OUT) :: cset           ! Indicates the character set used for the attribute’s name
    TYPE(H5O_TOKEN_T_F), INTENT(OUT), TARGET :: token  ! If the link is a hard link, token specifies the object token that the link points to
    INTEGER(SIZE_T), INTENT(OUT) :: val_size  ! If the link is a symbolic link, val_size will be the length of the link value, e.g., 
                                              ! the length of the name of the pointed-to object with a null terminator. 
    INTEGER, INTENT(OUT) :: hdferr       ! Error code:
                                         ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id  ! Link access property list
!*****
    INTEGER :: corder_valid
    INTEGER(SIZE_T)  :: group_namelen
    INTEGER(HID_T) :: lapl_id_default

!  MS FORTRAN needs explicit interface for C functions called here.
!
    INTERFACE
       INTEGER FUNCTION h5lget_info_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, &
            link_type, corder_valid, corder, cset, token, val_size, lapl_id_default) &
            BIND(C,NAME='h5lget_info_by_idx_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T, HSIZE_T, H5O_TOKEN_T_F
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: group_name
         INTEGER(SIZE_T)  :: group_namelen
         INTEGER, INTENT(IN) :: index_field
         INTEGER, INTENT(IN) :: order
         INTEGER(HSIZE_T), INTENT(IN) :: n
         INTEGER, INTENT(OUT) :: link_type
         INTEGER :: corder_valid
         INTEGER, INTENT(OUT) :: corder
         INTEGER, INTENT(OUT) :: cset
         TYPE(H5O_TOKEN_T_F), INTENT(OUT) :: token
         INTEGER(SIZE_T), INTENT(OUT) :: val_size
         INTEGER(HID_T) :: lapl_id_default
       END FUNCTION h5lget_info_by_idx_c
    END INTERFACE

    group_namelen = LEN(group_name)

    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    hdferr = h5lget_info_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, &
         link_type, corder_valid, corder, cset, token, val_size, lapl_id_default)

    f_corder_valid =.FALSE.
    IF (corder_valid .EQ. 1) f_corder_valid =.TRUE.

  END SUBROUTINE h5lget_info_by_idx_f

!
!****s* H5L/h5lis_registered_f
!
! NAME
!  h5lis_registered_f
!
! PURPOSE
!  Determines whether a class of user-defined links is registered.
!
! INPUTS
!  link_cls_id 	 - User-defined link class identifier
!
! OUTPUTS
!  registered 	 - .TRUE.  - if the link class has been registered
!                  .FALSE. - if it is unregistered
!  hdferr 	 - Error code
!  Success:  0
!  Failure: -1
!
! AUTHOR
!  M. Scot Breitenfeld
!  February 29, 2008
!
! SOURCE
  SUBROUTINE h5lis_registered_f(link_cls_id, registered, hdferr)
    IMPLICIT NONE
    INTEGER, INTENT(IN) :: link_cls_id  ! User-defined link class identifier
    LOGICAL, INTENT(OUT) :: registered  ! .TRUE. - if the link class has been registered and
                                        ! .FALSE. - if it is unregistered
    INTEGER, INTENT(OUT) :: hdferr      ! Error code:
                                        ! 0 on success and -1 on failure
!*****
    INTERFACE
       INTEGER FUNCTION h5lis_registered_c(link_cls_id) BIND(C,NAME='h5lis_registered_c')
         IMPLICIT NONE
         INTEGER, INTENT(IN) :: link_cls_id  ! User-defined link class identifier
       END FUNCTION h5lis_registered_c
    END INTERFACE

    hdferr = h5lis_registered_c(link_cls_id)

    IF(hdferr.GT.0)THEN
       registered = .TRUE.
    ELSE IF(hdferr.EQ.0)THEN
       registered = .FALSE.
    ENDIF

  END SUBROUTINE h5lis_registered_f

!
!****s* H5L/h5lmove_f
!
! NAME
!  h5lmove_f
!
! PURPOSE
!  Renames a link within an HDF5 file.
!
! INPUTS
!  src_loc_id 	 - Original file or group identifier.
!  src_name 	 - Original link name.
!  dest_loc_id 	 - Destination file or group identifier.
!  dest_name 	 - NEW link name.
!
! OUTPUTS
!  hdferr 	 - Error code:
!                   0 on success and -1 on failure
!
! OPTIONAL PARAMETERS
!  lcpl_id 	 - Link creation property list identifier to be associated WITH the NEW link.
!  lapl_id 	 - Link access property list identifier to be associated WITH the NEW link.
!
! AUTHOR
!  M. Scot Breitenfeld
!  March 3, 2008
!
! SOURCE
  SUBROUTINE h5lmove_f(src_loc_id, src_name, dest_loc_id, dest_name, hdferr, lcpl_id, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: src_loc_id  ! Original file or group identifier.
    CHARACTER(LEN=*), INTENT(IN) :: src_name  ! Original link name.
    INTEGER(HID_T), INTENT(IN) :: dest_loc_id ! Destination file or group identifier.
    CHARACTER(LEN=*), INTENT(IN) :: dest_name ! NEW link name.
    INTEGER, INTENT(OUT) :: hdferr     ! Error code:
                                              ! 0 on success and -1 on failure
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lcpl_id ! Link creation property list identifier
                                                    ! to be associated WITH the NEW link.
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id ! Link access property list identifier
                                                    ! to be associated WITH the NEW link.
!*****
    INTEGER(SIZE_T) :: src_namelen
    INTEGER(SIZE_T) :: dest_namelen

    INTEGER(HID_T) :: lcpl_id_default
    INTEGER(HID_T) :: lapl_id_default

    INTERFACE
       INTEGER FUNCTION h5lmove_c(src_loc_id, src_name, src_namelen, dest_loc_id, &
            dest_name, dest_namelen, lcpl_id_default, lapl_id_default) BIND(C,NAME='h5lmove_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: src_loc_id

         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: src_name
         INTEGER(SIZE_T) :: src_namelen
         INTEGER(HID_T), INTENT(IN) :: dest_loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: dest_name
         INTEGER(SIZE_T) :: dest_namelen

         INTEGER(HID_T) :: lcpl_id_default
         INTEGER(HID_T) :: lapl_id_default

       END FUNCTION h5lmove_c
    END INTERFACE

    lcpl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lcpl_id)) lcpl_id_default = lcpl_id
    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    src_namelen = LEN(src_name)
    dest_namelen = LEN(dest_name)

    hdferr = H5Lmove_c(src_loc_id, src_name, src_namelen, dest_loc_id, &
         dest_name, dest_namelen, lcpl_id_default, lapl_id_default)

  END SUBROUTINE h5lmove_f

!
!****s* H5L/h5lget_name_by_idx_f
!
! NAME
!  h5lget_name_by_idx_f
!
! PURPOSE
!  Retrieves name of the nth link in a group, according to the order within a specified field or index.
!
! INPUTS
!  loc_id 	 - File or group identifier specifying location of subject group
!  group_name 	 - Name of subject group
!  index_field 	 - Index or field which determines the order
!  order 	 - Order within field or index
!  n 	         - Link for which to retrieve information
!
! OUTPUTS
!  name 	 - Buffer in which link value is returned
!  hdferr 	 - Returns 0 if successful and -1 if fails
!
! OPTIONAL PARAMETERS
!  lapl_id 	 - List access property list identifier.
!  size 	 - Maximum number of characters of link value to be returned.
!
! AUTHOR
!  M. Scot Breitenfeld
!  March 10, 2008
!
! SOURCE
  SUBROUTINE h5lget_name_by_idx_f(loc_id, group_name, index_field, order, n, &
        name, hdferr, size, lapl_id)
    IMPLICIT NONE
    INTEGER(HID_T), INTENT(IN) :: loc_id       ! File or group identifier specifying location of subject group
    CHARACTER(LEN=*), INTENT(IN) :: group_name ! Name of subject group
    INTEGER, INTENT(IN) :: index_field  ! Index or field which determines the order
                                        !    H5_INDEX_UNKNOWN_F   - Unknown index type
                                        !    H5_INDEX_NAME_F      - Index on names
                                        !    H5_INDEX_CRT_ORDER_F - Index on creation order
                                        !    H5_INDEX_N_F	      - Number of indices defined
    INTEGER, INTENT(IN) :: order        ! Order in which to iterate over index; Possible values are:
                                        !    H5_ITER_UNKNOWN_F  - Unknown order
                                        !    H5_ITER_INC_F      - Increasing order
                                        !    H5_ITER_DEC_F      - Decreasing order
                                        !    H5_ITER_NATIVE_F   - No particular order, whatever is fastest
    INTEGER(HSIZE_T), INTENT(IN) :: n   ! Attribute’s position in index
    CHARACTER(LEN=*), INTENT(OUT) :: name ! Buffer in which link value is returned
    INTEGER, INTENT(OUT) :: hdferr        ! Error code:
                                          ! 0 on success and -1 on failure
!*****
    INTEGER(SIZE_T)  :: group_namelen
    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id  ! Link access property list
    INTEGER(HID_T) :: lapl_id_default
    INTEGER(SIZE_T), OPTIONAL, INTENT(OUT) :: size   ! Indicates the size, in the number of characters, of the link
    INTEGER(SIZE_T) :: size_default

    INTERFACE
       INTEGER FUNCTION h5lget_name_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, &
             size_default, name, lapl_id_default) BIND(C,NAME='h5lget_name_by_idx_c')
         IMPORT :: c_char
         IMPORT :: HID_T, SIZE_T, HSIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: loc_id

         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: group_name
         INTEGER(SIZE_T)  :: group_namelen
         INTEGER, INTENT(IN) :: index_field
         INTEGER, INTENT(IN) :: order
         INTEGER(HSIZE_T), INTENT(IN) :: n
         INTEGER(SIZE_T) :: size_default
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(OUT) :: name
         INTEGER(HID_T) :: lapl_id_default
       END FUNCTION h5lget_name_by_idx_c
    END INTERFACE

    group_namelen = LEN(group_name)

    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    size_default = LEN(name)

    hdferr = h5lget_name_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, &
             size_default, name, lapl_id_default)

    IF(PRESENT(size)) size = size_default


  END SUBROUTINE h5lget_name_by_idx_f


!  HAS PROBLEM WITH void pointer in C
!!$!
!!$!****s* H5L/
!!$!
!!$! NAME
!!$!		h5lget_val_by_idx_f
!!$!
!!$! PURPOSE
!!$!      Returns the link value of a link, according to the order of
!!$!               an index.  For symbolic links, this is the path to which the
!!$!               link points, including the null terminator.  For user-defined
!!$!               links, it is the link buffer.
!!$! INPUTS
!!$!   loc_id      - File or group identifier specifying location of subject group
!!$!   group_name  - Name of subject group
!!$!   index_field - Index or field which determines the order
!!$!   order       - Order within field or index
!!$!   n           - Link for which to retrieve information
!!$!   size        - Maximum number of characters of link value to be returned.
!!$!
!!$! OUTPUTS  NOTE: In C these are defined as a structure: H5L_info_t
!!$!    corder_valid   - indicates whether the creation order data is valid for this attribute
!!$!    corder         - is a positive integer containing the creation order of the attribute
!!$!    cset           - indicates the character set used for the attribute’s name
!!$!    data_size      - indicates the size, in the number of characters, of the attribute
!!$!    hdferr         - error code
!!$!				 Success:  0
!!$!				 Failure: -1
!!$! OPTIONAL PARAMETERS
!!$!    lapl_id      - List access property list identifier.
!!$!
!!$! AUTHOR
!!$!	M. Scot Breitenfeld
!!$!		March 3, 2008
!!$!
!!$! HISTORY  N/A
!!$!
!!$!
!!$! SOURCE
!!$  SUBROUTINE h5lget_val_by_idx_f(loc_id, group_name, index_field, order, n, &
!!$       f_corder_valid, corder, cset, data_size, hdferr, lapl_id)
!!$    IMPLICIT NONE
!!$    INTEGER(HID_T), INTENT(IN) :: loc_id  ! File or group identifier specifying location of subject group
!!$    CHARACTER(LEN=*), INTENT(IN) :: group_name ! Name of subject group
!!$    INTEGER, INTENT(IN) :: index_field  ! Index or field which determines the order
!!$                                        !    H5_INDEX_UNKNOWN_F   - Unknown index type
!!$                                        !    H5_INDEX_NAME_F      - Index on names
!!$                                        !    H5_INDEX_CRT_ORDER_F - Index on creation order
!!$                                        !    H5_INDEX_N_F	      - Number of indices defined
!!$    INTEGER, INTENT(IN) :: order        ! Order in which to iterate over index; Possible values are:
!!$                                        !    H5_ITER_UNKNOWN_F  - Unknown order
!!$                                        !    H5_ITER_INC_F      - Increasing order
!!$                                        !    H5_ITER_DEC_F      - Decreasing order
!!$                                        !    H5_ITER_NATIVE_F   - No particular order, whatever is fastest
!!$    INTEGER(HSIZE_T), INTENT(IN) :: n   ! Attribute’s position in index
!!$    LOGICAL, INTENT(OUT) :: f_corder_valid ! Indicates whether the creation order data is valid for this attribute
!!$    INTEGER, INTENT(OUT) :: corder ! Is a positive integer containing the creation order of the attribute
!!$    INTEGER, INTENT(OUT) :: cset ! Indicates the character set used for the attribute’s name
!!$    INTEGER(HSIZE_T), INTENT(OUT) :: data_size   ! Indicates the size, in the number of characters, of the attribute
!!$    INTEGER, INTENT(OUT) :: hdferr       ! Error code:
!!$                                         ! 0 on success and -1 on failure
!!$    INTEGER :: corder_valid
!!$    INTEGER(SIZE_T)  :: group_namelen
!!$    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id  ! Link access property list
!!$    INTEGER(HID_T) :: lapl_id_default
!!$
!!$    INTERFACE
!!$       INTEGER FUNCTION h5lget_val_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, &
!!$            corder_valid, corder, cset, data_size, lapl_id_default)
!!$         USE H5GLOBAL
!!$         !DEC$IF DEFINED(HDF5F90_WINDOWS)
!!$         !DEC$ATTRIBUTES C,reference,decorate,alias:'H5LGET_VAL_BY_IDX_C'::h5lget_val_by_idx_c
!!$         !DEC$ENDIF
!!$         INTEGER(HID_T), INTENT(IN) :: loc_id
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: group_name
!!$         INTEGER(SIZE_T)  :: group_namelen
!!$         INTEGER, INTENT(IN) :: index_field
!!$         INTEGER, INTENT(IN) :: order
!!$         INTEGER(HSIZE_T), INTENT(IN) :: n
!!$         INTEGER :: corder_valid
!!$         INTEGER, INTENT(OUT) :: corder
!!$         INTEGER, INTENT(OUT) :: cset
!!$         INTEGER(HSIZE_T), INTENT(OUT) :: data_size
!!$         INTEGER(HID_T) :: lapl_id_default
!!$       END FUNCTION h5lget_val_by_idx_c
!!$    END INTERFACE
!!$
!!$    group_namelen = LEN(group_name)
!!$
!!$    lapl_id_default = H5P_DEFAULT_F
!!$    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id
!!$
!!$    hdferr = h5lget_info_by_idx_c(loc_id, group_name, group_namelen, index_field, order, n, &
!!$         corder_valid, corder, cset, data_size, lapl_id_default)
!!$
!!$    f_corder_valid =.FALSE.
!!$    IF (corder_valid .EQ. 1) f_corder_valid =.TRUE.
!!$
!!$  END SUBROUTINE h5lget_val_by_idx_f

!!$!
!!$!****s* H5L/h5lget_val_f
!!$!
!!$! NAME
!!$!		h5lget_val_f
!!$!
!!$! PURPOSE
!!$!  	Returns the value of a symbolic link.
!!$!
!!$! INPUTS
!!$!   link_loc_id  - File or group identifier.
!!$!   link_name    - Link whose value is to be returned.
!!$!   size         - Maximum number of characters of link value to be returned.
!!$!
!!$! OUTPUTS
!!$!   linkval_buff - The buffer to hold the returned link value.
!!$!         hdferr - error code
!!$!				 Success:  0
!!$!				 Failure: -1
!!$! OPTIONAL PARAMETERS
!!$!    lapl_id      - List access property list identifier.
!!$!
!!$! AUTHOR
!!$!	M. Scot Breitenfeld
!!$!	March 3, 2008
!!$! SOURCE
!!$  SUBROUTINE h5lget_val_f(link_loc_id, link_name, size, linkval_buff,   &
!!$       hdferr, lapl_id)
!!$    IMPLICIT NONE
!!$    INTEGER(HID_T), INTENT(IN) :: link_loc_id  ! File or group identifier.
!!$    CHARACTER(LEN=*), INTENT(IN) :: link_name  ! Link whose value is to be returned.
!!$    INTEGER(SIZE_T), INTENT(IN) :: size        !  Maximum number of characters of link value to be returned.
!!$
!!$    CHARACTER(LEN=size), INTENT(OUT) :: linkval_buff ! The buffer to hold the returned link value.
!!$    INTEGER, INTENT(OUT) :: hdferr       ! Error code:
!!$    ! 0 on success and -1 on failure
!!$    INTEGER(HID_T), OPTIONAL, INTENT(IN) :: lapl_id  ! Link access property list
!!$
!!$    INTEGER :: link_namelen
!!$    INTEGER(HID_T) :: lapl_id_default
!!$    INTEGER :: corder_valid
!!$
!!$    INTEGER :: link_namelen
!!$    INTEGER(HID_T) :: lapl_id_default
!!$
!!$!  MS FORTRAN needs explicit interface for C functions called here.
!!$!
!!$    INTERFACE
!!$       INTEGER FUNCTION h5lget_val_c(link_loc_id, link_name, link_namelen, size, linkval_buff, &
!!$            lapl_id_default)
!!$         USE H5GLOBAL
!!$         !DEC$IF DEFINED(HDF5F90_WINDOWS)
!!$         !DEC$ATTRIBUTES C,reference,decorate,alias:'H5LGET_VAL_C'::h5lget_val_c
!!$         !DEC$ENDIF
!!$         INTEGER(HID_T), INTENT(IN) :: link_loc_id  ! File or group identifier.
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: link_name  ! Link whose value is to be returned.
!!$         INTEGER :: link_namelen
!!$         INTEGER(SIZE_T), INTENT(IN) :: size        !  Maximum number of characters of link value to be returned.
!!$
!!$         CHARACTER(LEN=size), INTENT(OUT) :: linkval_buff ! The buffer to hold the returned link value.
!!$
!!$         INTEGER :: link_namelen
!!$         INTEGER(HID_T) :: lapl_id_default
!!$
!!$       END FUNCTION h5lget_val_c
!!$    END INTERFACE
!!$
!!$    link_namelen = LEN(link_name)
!!$
!!$    lapl_id_default = H5P_DEFAULT_F
!!$    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id
!!$
!!$    hdferr = h5lget_val_c(link_loc_id, link_name, link_namelen, size, linkval_buff, &
!!$         lapl_id_default)
!!$
!!$  END SUBROUTINE h5lget_val_f

!!$!
!!$!****s* H5L/H5Lregistered_f
!!$!
!!$! NAME
!!$!	    H5Lregistered_f
!!$!
!!$! PURPOSE
!!$!  Registers user-defined link class or changes behavior of existing class.
!!$!
!!$! INPUTS NOTE: In C the following represents struct H5L_class_t:
!!$!     version      - Version number of this struct
!!$!     class_id     - Link class identifier
!!$!     comment      - Comment for debugging
!!$!     create_func  - Callback during link creation
!!$!     move_func    - Callback after moving link
!!$!     copy_func    - Callback after copying link
!!$!     trav_func    - The main traversal function
!!$!     del_func     - Callback for link deletion
!!$!     query_func   - Callback for queries
!!$!
!!$! OUTPUTS
!!$!           hdferr - Error code
!!$!		       Success:  0
!!$!	               Failure: -1
!!$! OPTIONAL PARAMETERS
!!$!                      None
!!$!
!!$! AUTHOR
!!$! M. Scot Breitenfeld
!!$!	      February 29, 2008
!!$!
!!$! HISTORY  N/A
!!$!
!!$!
!!$! SOURCE
!!$  SUBROUTINE H5Lregistered_f(version, class_id, comment, create_func, &
!!$       move_func, copy_func, trav_func, del_func, query_func, hdferr)
!!$    IMPLICIT NONE
!!$    INTEGER, INTENT(IN) :: version      ! Version number of this struct
!!$    INTEGER, INTENT(IN) :: class_id     ! Link class identifier
!!$    CHARACTER(LEN=*), INTENT(IN) :: comment      ! Comment for debugging
!!$    CHARACTER(LEN=*), INTENT(IN) :: create_func  ! Callback during link creation
!!$    CHARACTER(LEN=*), INTENT(IN) :: move_func    ! Callback after moving link
!!$    CHARACTER(LEN=*), INTENT(IN) :: copy_func    ! Callback after copying link
!!$    CHARACTER(LEN=*), INTENT(IN) :: trav_func    ! The main traversal function
!!$    CHARACTER(LEN=*), INTENT(IN) :: del_func     ! Callback for link deletion
!!$    CHARACTER(LEN=*), INTENT(IN) :: query_func   ! Callback for queries
!!$    INTEGER, INTENT(OUT) :: hdferr      ! Error code:
!!$                                        ! 0 on success and -1 on failure
!!$    INTEGER :: comment_len
!!$    INTEGER :: create_func_len
!!$    INTEGER :: move_func_len
!!$    INTEGER :: copy_func_len
!!$    INTEGER :: trav_func_len
!!$    INTEGER :: del_func_len
!!$    INTEGER :: query_func_len
!!$
!!$    INTERFACE
!!$       INTEGER FUNCTION H5Lregistered_c(version, class_id, comment, &
!!$            create_func, create_func_len, &
!!$            move_func, move_func_len, &
!!$            copy_func, copy_func_len, &
!!$            trav_func, trav_func_len, &
!!$            del_func, del_func_len, &
!!$            query_func,query_func_len)
!!$         USE H5GLOBAL
!!$         !DEC$IF DEFINED(HDF5F90_WINDOWS)
!!$         !DEC$ATTRIBUTES C,reference,decorate,alias:'H5LREGISTERED_C'::H5Lregistered_c
!!$         !DEC$ENDIF
!!$         INTEGER, INTENT(IN) :: version      ! Version number of this struct
!!$         INTEGER, INTENT(IN) :: class_id     ! Link class identifier
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: comment      ! Comment for debugging
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: create_func  ! Callback during link creation
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: move_func    ! Callback after moving link
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: copy_func    ! Callback after copying link
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: trav_func    ! The main traversal function
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: del_func     ! Callback for link deletion
!!$         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: query_func   ! Callback for queries
!!$         INTEGER, INTENT(OUT) :: hdferr   ! Error code:
!!$                                          ! 0 on success and -1 on failure
!!$         INTEGER :: comment_len
!!$         INTEGER :: create_func_len
!!$         INTEGER :: move_func_len
!!$         INTEGER :: copy_func_len
!!$         INTEGER :: trav_func_len
!!$         INTEGER :: del_func_len
!!$         INTEGER :: query_func_len
!!$
!!$       END FUNCTION H5Lregistered_c
!!$    END INTERFACE
!!$
!!$    comment_len     = LEN(comment)
!!$    create_func_len = LEN(create_func)
!!$    move_func_len   = LEN(move_func)
!!$    copy_func_len   = LEN(copy_func)
!!$    trav_func_len   = LEN(trav_func)
!!$    del_func_len    = LEN(del_func)
!!$    query_func_len  = LEN(query_func)
!!$
!!$    hdferr = H5Lregistered_c(version, class_id, comment, &
!!$         create_func, create_func_len, &
!!$         move_func, move_func_len, &
!!$         copy_func, copy_func_len, &
!!$         trav_func, trav_func_len, &
!!$         del_func, del_func_len, &
!!$         query_func, query_func_len)
!!$
!!$  END SUBROUTINE H5Lregistered_f

!****s* H5L (F03)/h5literate_f
!
! NAME
!  h5literate_f
!
! PURPOSE
!  Iterates through links in a group.
!
! Inputs:
!  group_id   - Identifier specifying subject group
!  index_type - Type of index which determines the order:
!                H5_INDEX_NAME_F      - Alpha-numeric index on name
!                H5_INDEX_CRT_ORDER_F - Index on creation order
!  order      - Order within index:
!                H5_ITER_INC_F    - Increasing order
!                H5_ITER_DEC_F    - Decreasing order
!                H5_ITER_NATIVE_F - Fastest available order
!  idx 	      - IN: Iteration position at which to start
!  op 	      - Callback function passing data regarding the link to the calling application
!  op_data    - User-defined pointer to data required by the application for its processing of the link
!
! Outputs:
!  idx 	        - OUT: Position at which an interrupted iteration may be restarted
!  return_value - Success: The return value of the first operator that
! 			   returns non-zero, or zero if all members were
! 			   processed with no operator returning non-zero.
!
! 		  Failure: Negative if something goes wrong within the
! 			   library, or the negative value returned by one
! 			   of the operators.
!
!  hdferr     - Returns 0 if successful and -1 if fails
!
! AUTHOR
!  M. Scot Breitenfeld
!  July 8, 2008
!
! Fortran2003 Interface:
  SUBROUTINE h5literate_f(group_id, index_type, order, idx, op, op_data, return_value, hdferr)
    USE, INTRINSIC :: ISO_C_BINDING
    IMPLICIT NONE
    INTEGER(HID_T)  , INTENT(IN)    :: group_id
    INTEGER         , INTENT(IN)    :: index_type
    INTEGER         , INTENT(IN)    :: order
    INTEGER(HSIZE_T), INTENT(INOUT) :: idx
    TYPE(C_FUNPTR)  , INTENT(IN)    :: op
    TYPE(C_PTR)     , INTENT(IN)    :: op_data
    INTEGER         , INTENT(OUT)   :: return_value
    INTEGER         , INTENT(OUT)   :: hdferr
!*****
    INTERFACE
       INTEGER FUNCTION h5literate_c(group_id, index_type, order, idx, op, op_data) &
            BIND(C, NAME='h5literate_c')
         IMPORT :: c_ptr, c_funptr
         IMPORT :: HID_T, HSIZE_T
         IMPLICIT NONE
         INTEGER(HID_T), INTENT(IN) :: group_id
         INTEGER, INTENT(IN) :: index_type
         INTEGER, INTENT(IN) :: order
         INTEGER(HSIZE_T), INTENT(INOUT) :: idx
         TYPE(C_FUNPTR), VALUE :: op
         TYPE(C_PTR), VALUE :: op_data
       END FUNCTION h5literate_c
    END INTERFACE

    return_value = h5literate_c(group_id, index_type, order, idx, op, op_data)

    IF(return_value.GE.0)THEN
       hdferr = 0
    ELSE
       hdferr = -1
    END IF

  END SUBROUTINE h5literate_f

!****s* H5L (F03)/h5literate_by_name_f
!
! NAME
!  h5literate_by_name_f
!
! PURPOSE
!  Iterates through links in a group.
!
! Inputs:
!  loc_id     - File or group identifier specifying location of subject group
!  group_name - Name of subject group
!  index_type - Type of index which determines the order:
!                H5_INDEX_NAME_F      - Alpha-numeric index on name
!                H5_INDEX_CRT_ORDER_F - Index on creation order
!  order      - Order within index:
!                H5_ITER_INC_F    - Increasing order
!                H5_ITER_DEC_F    - Decreasing order
!                H5_ITER_NATIVE_F - Fastest available order
!  idx 	      - IN: Iteration position at which to start
!  op 	      - Callback function passing data regarding the link to the calling application
!  op_data    - User-defined pointer to data required by the application for its processing of the link
!
! Outputs:
!  idx 	        - OUT: Position at which an interrupted iteration may be restarted
!  return_value - Success: The return value of the first operator that
! 			   returns non-zero, or zero if all members were
! 			   processed with no operator returning non-zero.
!
! 		  Failure: Negative if something goes wrong within the
! 			   library, or the negative value returned by one
! 			   of the operators.
!
!  hdferr        - Returns 0 if successful and -1 if fails
!
! Optional parameters:
!  lapl_id    - Link access property list
!
! AUTHOR
!  M. Scot Breitenfeld
!  Augest 18, 2008
!
! Fortran2003 Interface:
  SUBROUTINE h5literate_by_name_f(loc_id, group_name, index_type, order, &
       idx, op, op_data, return_value, hdferr, lapl_id)
    USE, INTRINSIC :: ISO_C_BINDING
    IMPLICIT NONE
    INTEGER(HID_T)  , INTENT(IN)           :: loc_id
    CHARACTER(LEN=*), INTENT(IN)           :: group_name 
    INTEGER         , INTENT(IN)           :: index_type
    INTEGER         , INTENT(IN)           :: order
    INTEGER(HSIZE_T), INTENT(INOUT)        :: idx
    TYPE(C_FUNPTR)  , INTENT(IN)           :: op  
    TYPE(C_PTR)     , INTENT(IN)           :: op_data
    INTEGER         , INTENT(OUT)          :: return_value
    INTEGER         , INTENT(OUT)          :: hdferr
    INTEGER(HID_T)  , INTENT(IN), OPTIONAL :: lapl_id
!*****
    INTEGER(HID_T) :: lapl_id_default
    INTEGER(SIZE_T) :: namelen

    INTERFACE
       INTEGER FUNCTION h5literate_by_name_c(loc_id, name, namelen, index_type, order,&
            idx, op, op_data, lapl_id_default) BIND(C, NAME='h5literate_by_name_c')
         IMPORT :: c_char, c_ptr, c_funptr
         IMPORT :: HID_T, SIZE_T, HSIZE_T
         IMPLICIT NONE
         INTEGER(HID_T)  , INTENT(IN) :: loc_id
         CHARACTER(KIND=C_CHAR), DIMENSION(*), INTENT(IN) :: name
         INTEGER(SIZE_T) , INTENT(IN) :: namelen
         INTEGER         , INTENT(IN) :: index_type
         INTEGER         , INTENT(IN) :: order
         INTEGER(HSIZE_T), INTENT(INOUT) :: idx
         TYPE(C_FUNPTR), VALUE :: op
         TYPE(C_PTR), VALUE :: op_data
         INTEGER(HID_T)  , INTENT(IN) :: lapl_id_default
       END FUNCTION
    END INTERFACE

    namelen  = LEN(group_name)
    lapl_id_default = H5P_DEFAULT_F
    IF(PRESENT(lapl_id)) lapl_id_default = lapl_id

    return_value = h5literate_by_name_c(loc_id, group_name, namelen, index_type, order, idx, op, op_data, lapl_id_default)

    IF(return_value.GE.0)THEN
       hdferr = 0
    ELSE
       hdferr = -1
    END IF

  END SUBROUTINE h5literate_by_name_f

END MODULE H5L