<pre><code class="language-c">ssize_t H5Lget_name_by_idx( hid_t loc_id, const char *group_name, H5_index_t index_field, H5_iter_order_t order, hsize_t n, char *name, size_t size, hid_t lapl_id )</code></pre>

<pre><code class="language-fortran">SUBROUTINE h5lget_info_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/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(HID_T), OPTIONAL, INTENT(IN) :: lapl_id  
                    ! Link access property list
END SUBROUTINE h5lget_info_by_idx_f</code></pre>