Such macros are provided to facilitate application compatibility. For more information on macro use and mappings, see the “API Compatibility Macros in HDF5” document.

When both the HDF5 Library and the application are built and installed with no specific compatibility flags, H5Gopen is mapped to the most recent version of the function, currently H5Gopen2. If the library and/or application is compiled for Release 1.6 emulation, H5Gopen will be mapped to H5Gopen1. Function-specific flags are available to override these settings on a function-by-function basis when the application is compiled.

Specific compile-time compatibility flags and the resulting mappings are as follows:

A group created with this macro should be closed with H5Gclose when the group is no longer needed so that resource leaks will not develop.

SUBROUTINE h5gopen_f(loc_id, name, grp_id, hdferr, gapl_id)
  IMPLICIT NONE
  INTEGER(HID_T), INTENT(IN) :: loc_id   ! File or group identifier 
  CHARACTER(LEN=*), INTENT(IN) :: name   ! Name of the group 
  INTEGER(HID_T), INTENT(OUT) :: grp_id  ! File identifier 
  INTEGER, INTENT(OUT) :: hdferr         ! Error code  
                                         ! 0 on success and -1 on failure
  INTEGER(HID_T), OPTIONAL, INTENT(IN) :: gapl_id  
                                         ! Group access property list identifier
END SUBROUTINE h5gopen_f