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! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
!   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 files COPYING and Copyright.html.  COPYING can be found at the root   *
!   of the source code distribution tree; Copyright.html can be found at the  *
!   root level of an installed copy of the electronic HDF5 document set and   *
!   is linked from the top-level documents page.  It can also be found at     *
!   http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
!   access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
!
!
! This file contains Fortran90 interfaces for H5R functions.
! 
      MODULE H5R
        USE H5GLOBAL

! If you change the value of these parameters, do not forget to change corresponding
! values in the H5f90.h file. 
!        INTEGER, PARAMETER :: REF_OBJ_BUF_LEN = 2 
!        INTEGER, PARAMETER :: REF_REG_BUF_LEN = 3 
!
!        TYPE hobj_ref_t_f
!             INTEGER ref(REF_OBJ_BUF_LEN)  
!        END TYPE 
!
!        TYPE hdset_reg_ref_t_f
!             INTEGER ref(REF_REG_BUF_LEN) 
!        END TYPE 
!
          INTERFACE h5rcreate_f

            MODULE PROCEDURE h5rcreate_object_f
            MODULE PROCEDURE h5rcreate_region_f 

          END INTERFACE 
          
          INTERFACE h5rdereference_f

            MODULE PROCEDURE h5rdereference_object_f
            MODULE PROCEDURE h5rdereference_region_f 

          END INTERFACE 
          
          INTERFACE h5rget_region_f

            MODULE PROCEDURE h5rget_region_region_f 

          END INTERFACE 
          
          INTERFACE h5rget_object_type_f

            MODULE PROCEDURE h5rget_object_type_obj_f

          END INTERFACE 
          

        CONTAINS
          
!----------------------------------------------------------------------
! Name:		h5rcreate_object_f 
!
! Purpose: 	Creates reference to the object
!
! Inputs:  
!		loc_id		- location identifier
!		name		- name of the object at the specified location
! Outputs:  
!		ref		- reference to the specified object
!		hdferr:		- error code		
!				 	Success:  0
!				 	Failure: -1   
! Optional parameters:
!				NONE
!
! Programmer:	Elena Pourmal
!		August 12, 1999	
!
! Modifications: 	Explicit Fortran interfaces were added for 
!			called C functions (it is needed for Windows
!			port).  February 28, 2001 
!
! Comment:		This is a module procedure for the h5rcreate_f 
!			subroutine.		
!----------------------------------------------------------------------
  
          SUBROUTINE h5rcreate_object_f(loc_id, name, ref, hdferr) 
!
!This definition is needed for Windows DLLs
!DEC$if defined(BUILD_HDF5_DLL)
!DEC$attributes dllexport :: h5rcreate_object_f
!DEC$endif
!
            IMPLICIT NONE
            INTEGER(HID_T), INTENT(IN) :: loc_id   ! Location identifier 
            CHARACTER(LEN=*), INTENT(IN) :: name   ! Name of the object at location specified
                                                   ! by loc_id identifier 
            TYPE(hobj_ref_t_f), INTENT(OUT) :: ref   ! Object reference 
            INTEGER, INTENT(OUT) :: hdferr         ! Error code 

            INTEGER :: namelen                     ! Name length
            INTEGER(HADDR_T) :: ref_f              ! Local buffer to pass reference

!            INTEGER, EXTERNAL :: h5fcreate_object_c
!  Interface is needed for MS FORTRAN
!
            INTERFACE
              INTEGER FUNCTION h5rcreate_object_c(ref_f, loc_id, name, namelen)
              USE H5GLOBAL
              !DEC$ IF DEFINED(HDF5F90_WINDOWS)
              !MS$ATTRIBUTES C,reference,alias:'_H5RCREATE_OBJECT_C':: h5rcreate_object_c
              !DEC$ ENDIF
              !DEC$ATTRIBUTES reference :: name 
              INTEGER(HADDR_T) :: ref_f
              INTEGER(HID_T), INTENT(IN) :: loc_id  
              CHARACTER(LEN=*), INTENT(IN) :: name
              INTEGER :: namelen
              END FUNCTION h5rcreate_object_c
            END INTERFACE

            namelen = LEN(name)
            ref_f = 0
            hdferr = h5rcreate_object_c(ref_f, loc_id, name, namelen )
            ref%ref = ref_f
        
          END SUBROUTINE h5rcreate_object_f
          
!----------------------------------------------------------------------
! Name:		h5rcreate_region_f 
!
! Purpose: 	Creates r eference to the dataset region
!
! Inputs:  
!		loc_id		- location identifier
!		name		- name of the dataset at the specified location
!		space_id	- dataspace identifier that describes selected region
! Outputs:  
!		ref		- reference to the dataset region
!		hdferr:		- error code		
!				 	Success:  0
!				 	Failure: -1   
! Optional parameters:
!				NONE
!
! Programmer:	Elena Pourmal
!		August 12, 1999	
!
! Modifications: 	Explicit Fortran interfaces were added for 
!			called C functions (it is needed for Windows
!			port).  February 28, 2001 
!
! Comment:		This is a module procedure for the h5rcreate_f 
!			subroutine.		
!----------------------------------------------------------------------
  
          SUBROUTINE h5rcreate_region_f(loc_id, name, space_id, ref, hdferr) 
!
!This definition is needed for Windows DLLs
!DEC$if defined(BUILD_HDF5_DLL)
!DEC$attributes dllexport :: h5rcreate_region_f
!DEC$endif
!
            IMPLICIT NONE
            INTEGER(HID_T), INTENT(IN) :: loc_id   ! Location identifier 
            CHARACTER(LEN=*), INTENT(IN) :: name   ! Name of the dataset at location specified
                                                   ! by loc_id identifier 
            INTEGER(HID_T), INTENT(IN) :: space_id ! Dataset's dataspace identifier 
            TYPE(hdset_reg_ref_t_f), INTENT(OUT) :: ref ! Dataset region reference 
            INTEGER, INTENT(OUT) :: hdferr         ! Error code 

            INTEGER :: namelen                     ! Name length
            INTEGER :: ref_f(REF_REG_BUF_LEN)          ! Local buffer to pass reference

!            INTEGER, EXTERNAL :: h5fcreate_region_c
!  Interface is needed for MS FORTRAN
!
            INTERFACE
              INTEGER FUNCTION h5rcreate_region_c(ref_f, loc_id, name, namelen, space_id)
              USE H5GLOBAL
              !DEC$ IF DEFINED(HDF5F90_WINDOWS)
              !MS$ATTRIBUTES C,reference,alias:'_H5RCREATE_REGION_C':: h5rcreate_region_c
              !DEC$ ENDIF
              !DEC$ATTRIBUTES reference :: name 
!              INTEGER, PARAMETER :: REF_REG_BUF_LEN = 3 
              INTEGER :: ref_f(REF_REG_BUF_LEN)
              INTEGER(HID_T), INTENT(IN) :: loc_id  
              CHARACTER(LEN=*), INTENT(IN) :: name
              INTEGER :: namelen
              INTEGER(HID_T), INTENT(IN) :: space_id 
              END FUNCTION h5rcreate_region_c
            END INTERFACE

            namelen = LEN(name)
            ref_f = 0
            hdferr = h5rcreate_region_c(ref_f, loc_id, name, namelen, space_id )
            ref%ref = ref_f

          END SUBROUTINE h5rcreate_region_f
          
!----------------------------------------------------------------------
! Name:		h5rdereference_object_f
!
! Purpose: 	Opens the HDF5 object referenced
!
! Inputs:  
!		dset_id		- identifier of the dataset containing 
!				  reference		
!		ref		- reference to open
! Outputs:  
!		obj_id		- object_identifier
!		hdferr:		- error code		
!				 	Success:  0
!				 	Failure: -1   
! Optional parameters:
!				NONE
!
! Programmer:	Elena Pourmal
!		August 12, 1999	
!
! Modifications: 	Explicit Fortran interfaces were added for 
!			called C functions (it is needed for Windows
!			port).  February 28, 2001 
!
! Comment:		This is a module procedure for the h5rdereference_f 
!			subroutine.		
!----------------------------------------------------------------------
  
          
          SUBROUTINE h5rdereference_object_f(dset_id, ref, obj_id, hdferr) 
!
!This definition is needed for Windows DLLs
!DEC$if defined(BUILD_HDF5_DLL)
!DEC$attributes dllexport :: h5rdereference_object_f
!DEC$endif
!
            IMPLICIT NONE
            INTEGER(HID_T), INTENT(IN) :: dset_id   ! Dataset identifier 
            TYPE(hobj_ref_t_f), INTENT(IN) :: ref   ! Object reference 
            INTEGER(HID_T), INTENT(OUT) :: obj_id   ! Object identifier 
            INTEGER, INTENT(OUT) :: hdferr         ! Error code 

            INTEGER :: ref_type     ! Reference type 
            INTEGER(HADDR_T) :: ref_f          ! Local buffer to pass reference

!            INTEGER, EXTERNAL :: h5h5rdereference_object_c
!  Interface is needed for MS FORTRAN
!
            INTERFACE
              INTEGER FUNCTION h5rdereference_object_c(dset_id, ref_f, obj_id)
              USE H5GLOBAL
              !DEC$ IF DEFINED(HDF5F90_WINDOWS)
           !MS$ATTRIBUTES C,reference,alias:'_H5RDEREFERENCE_OBJECT_C':: h5rdereference_object_c
              !DEC$ ENDIF
!              INTEGER, PARAMETER :: REF_OBJ_BUF_LEN = 2
              INTEGER(HID_T), INTENT(IN) :: dset_id  
              INTEGER(HADDR_T) :: ref_f
              INTEGER(HID_T), INTENT(OUT) :: obj_id 
              END FUNCTION h5rdereference_object_c
            END INTERFACE

            ref_f = ref%ref
            hdferr = h5rdereference_object_c(dset_id, ref_f, obj_id )

          END SUBROUTINE h5rdereference_object_f
          
!----------------------------------------------------------------------
! Name:		h5rdereference_region_f
!
! Purpose: 	Opens the dataset region
!
! Inputs:  
!		dset_id		- identifier of the dataset containing 
!				  reference to teh regions		
!		ref		- reference to open
! Outputs:  
!		obj_id		- dataspace identifier
!		hdferr:		- error code		
!				 	Success:  0
!				 	Failure: -1   
! Optional parameters:
!				NONE
!
! Programmer:	Elena Pourmal
!		August 12, 1999	
!
! Modifications: 	Explicit Fortran interfaces were added for 
!			called C functions (it is needed for Windows
!			port).  February 28, 2001 
!
! Comment:		This is a module procedure for the h5rdereference_f 
!			subroutine.		
!----------------------------------------------------------------------
  
          
          SUBROUTINE h5rdereference_region_f(dset_id, ref, obj_id, hdferr) 
!
!This definition is needed for Windows DLLs
!DEC$if defined(BUILD_HDF5_DLL)
!DEC$attributes dllexport :: h5rdereference_region_f
!DEC$endif
!
            IMPLICIT NONE
            INTEGER(HID_T), INTENT(IN) :: dset_id   ! Dataset identifier 
            TYPE(hdset_reg_ref_t_f), INTENT(IN) :: ref   ! Object reference 
            INTEGER(HID_T), INTENT(OUT) :: obj_id   ! Dataspace identifier 
            INTEGER, INTENT(OUT) :: hdferr          ! Error code 

            INTEGER :: ref_type      ! Reference type 
            INTEGER :: ref_f(REF_REG_BUF_LEN)          ! Local buffer to pass reference

!            INTEGER, EXTERNAL :: h5rdereference_region_c
!  Interface is needed for MS FORTRAN
!
            INTERFACE
              INTEGER FUNCTION h5rdereference_region_c(dset_id, ref_f, obj_id)
              USE H5GLOBAL
              !DEC$ IF DEFINED(HDF5F90_WINDOWS)
           !MS$ATTRIBUTES C,reference,alias:'_H5RDEREFERENCE_REGION_C':: h5rdereference_region_c
              !DEC$ ENDIF
              INTEGER(HID_T), INTENT(IN) :: dset_id  
!              INTEGER, PARAMETER :: REF_REG_BUF_LEN = 3 
              INTEGER :: ref_f(REF_REG_BUF_LEN)
              INTEGER(HID_T), INTENT(OUT) :: obj_id 
              END FUNCTION h5rdereference_region_c
            END INTERFACE

            ref_type = H5R_DATASET_REGION_F
            ref_f = ref%ref
            hdferr = h5rdereference_region_c(dset_id, ref_f, obj_id )

          END SUBROUTINE h5rdereference_region_f
          
!----------------------------------------------------------------------
! Name:		h5rget_region_region_f
!
! Purpose: 	Retrieves a dataspace with the specified region selected
!
! Inputs:  
!		dset_id		- identifier of the dataset containing 
!				  reference to the regions		
!		ref		- reference to open
! Outputs:  
!		space_id	- dataspace identifier
!		hdferr:		- error code		
!				 	Success:  0
!				 	Failure: -1   
! Optional parameters:
!				NONE
!
! Programmer:	Elena Pourmal
!		August 12, 1999	
!
! Modifications: 	Explicit Fortran interfaces were added for 
!			called C functions (it is needed for Windows
!			port).  February 28, 2001 
!
! Comment:		This is a module procedure for the h5rget_region_f 
!			subroutine.		
!----------------------------------------------------------------------
  
          
          
          SUBROUTINE h5rget_region_region_f(dset_id, ref, space_id, hdferr) 
!
!This definition is needed for Windows DLLs
!DEC$if defined(BUILD_HDF5_DLL)
!DEC$attributes dllexport :: h5rget_region_region_f
!DEC$endif
!
            IMPLICIT NONE
            INTEGER(HID_T), INTENT(IN) :: dset_id   ! Dataset identifier 
            TYPE(hdset_reg_ref_t_f), INTENT(IN) :: ref   ! Dataset region reference 
            INTEGER(HID_T), INTENT(OUT) :: space_id   ! Space identifier 
            INTEGER, INTENT(OUT) :: hdferr          ! Error code 
            INTEGER :: ref_f(REF_REG_BUF_LEN)          ! Local buffer to pass reference

!            INTEGER, EXTERNAL :: h5rget_region_region_c
!  Interface is needed for MS FORTRAN
!
            INTERFACE
              INTEGER FUNCTION h5rget_region_region_c(dset_id, ref_f, space_id)
              USE H5GLOBAL
              !DEC$ IF DEFINED(HDF5F90_WINDOWS)
           !MS$ATTRIBUTES C,reference,alias:'_H5RGET_REGION_REGION_C':: h5rget_region_region_c
              !DEC$ ENDIF
              INTEGER(HID_T), INTENT(IN) :: dset_id  
!              INTEGER, PARAMETER :: REF_REG_BUF_LEN = 3 
              INTEGER :: ref_f(REF_REG_BUF_LEN)
              INTEGER(HID_T), INTENT(OUT) :: space_id 
              END FUNCTION h5rget_region_region_c
            END INTERFACE

            ref_f = ref%ref
            hdferr = h5rget_region_region_c(dset_id, ref_f, space_id )

          END SUBROUTINE h5rget_region_region_f
          
!----------------------------------------------------------------------
! Name:		h5rget_object_type_obj_f
!
! Purpose: 	Retrieves the type of object that an object reference points to.	
!
! Inputs:  
!		dset_id		- identifier of the dataset containing 
!				  reference to the objects
!		ref		- reference to open
! Outputs:  
!		obj_type	- object_type, possible values:
!					  H5G_UNKNOWN_F     (-1)
!					  H5G_LINK_F         0
!					  H5G_GROUP_F        1
!					  H5G_DATASET_F      2
! 					  H5G_TYPE_F         3
!
!		hdferr:		- error code		
!				 	Success:  0
!				 	Failure: -1   
! Optional parameters:
!				NONE
!
! Programmer:	Elena Pourmal
!		August 12, 1999	
!
! Modifications: 	Explicit Fortran interfaces were added for 
!			called C functions (it is needed for Windows
!			port).  February 28, 2001 
!
! Comment:		This is a module procedure for the h5rget_object_type_f 
!			subroutine.		
!----------------------------------------------------------------------
  

          SUBROUTINE h5rget_object_type_obj_f(dset_id, ref, obj_type, hdferr) 
!
!This definition is needed for Windows DLLs
!DEC$if defined(BUILD_HDF5_DLL)
!DEC$attributes dllexport :: h5rget_object_type_obj_f
!DEC$endif
!
            IMPLICIT NONE
            INTEGER(HID_T), INTENT(IN) :: dset_id   ! Dataset identifier 
            TYPE(hobj_ref_t_f), INTENT(IN) :: ref   ! Object reference 
            INTEGER, INTENT(OUT) :: obj_type   ! Object type  
                                               !  H5G_UNKNOWN_F     (-1)
                                               !  H5G_LINK_F         0
                                               !  H5G_GROUP_F        1
                                               !  H5G_DATASET_F      2
                                               !  H5G_TYPE_F         3

            INTEGER, INTENT(OUT) :: hdferr          ! Error code 
            INTEGER(HADDR_T) :: ref_f          ! Local buffer to pass reference

!            INTEGER, EXTERNAL :: h5rget_object_type_obj_c
!  Interface is needed for MS FORTRAN
!
            INTERFACE
              INTEGER FUNCTION h5rget_object_type_obj_c(dset_id, ref_f, obj_type)
              USE H5GLOBAL
              !DEC$ IF DEFINED(HDF5F90_WINDOWS)
           !MS$ATTRIBUTES C,reference,alias:'_H5RGET_OBJECT_TYPE_OBJ_C':: h5rget_object_type_obj_c
              !DEC$ ENDIF
!              INTEGER, PARAMETER :: REF_OBJ_BUF_LEN = 2
              INTEGER(HID_T), INTENT(IN) :: dset_id  
              INTEGER(HADDR_T) :: ref_f
              INTEGER, INTENT(OUT) :: obj_type 
              END FUNCTION h5rget_object_type_obj_c
            END INTERFACE

            ref_f = ref%ref
            hdferr = h5rget_object_type_obj_c(dset_id, ref_f, obj_type )

          END SUBROUTINE h5rget_object_type_obj_f

      END MODULE H5R