<pre><code class="language-c">htri_t H5Aexists_by_name
(
    hid_t       loc_id,
    const char *obj_name,
    const char *attr_name,
    hid_t       lapl_id
)</code></pre>

<pre><code class="language-fortran">SUBROUTINE h5aexists_by_name_f(loc_id, obj_name, attr_name, attr_exists, hdferr,&
     lapl_id)
  IMPLICIT NONE
  INTEGER(HID_T), INTENT(IN) :: loc_id  ! Location identifier
  CHARACTER(LEN=*), INTENT(IN) :: obj_name 
                                        ! Object name either relative to loc_id, 
                                        ! absolute from the 
                                        ! file’s root group, or '.'
  CHARACTER(LEN=*), INTENT(IN) :: attr_name 
                                        ! Attribute name
  LOGICAL, INTENT(OUT) :: attr_exists   ! .TRUE.Positive value if exists, .FALSE.0 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
END SUBROUTINE h5aexists_by_name_f</code></pre>