Signature:

      SUBROUTINE h5oexists_by_name_f(loc_id, name, link_exists, &
            hdferr, lapl_id)
        IMPLICIT NONE
        INTEGER(HID_T)  , INTENT(IN)  :: loc_id
        CHARACTER(LEN=*), INTENT(IN)  :: name
        LOGICAL         , INTENT(OUT) :: link_exists
        INTEGER         , INTENT(OUT) :: hdferr
        INTEGER(HID_T)  , INTENT(IN), OPTIONAL :: lapl_id

Inputs:

      loc_id   - Identifier of the file or group to query.
      name     - The name of the link to check.

Outputs:

      link_exists - Existing link resolves to an object.
      hdferr      - Returns 0 if successful and -1 if fails.

Optional parameters:

      lapl_id  - Link access property list identifier.