dict_i4tuple_callstat_haskey Function

      FUNCTION dict_i4tuple_callstat_haskey(dict, key) RESULT(res)
      !! Checks whether a given key is currently stored in the dictionary.
         TYPE(dict_i4tuple_callstat_type), intent(inout)  :: dict
         INTEGER(kind=int_4), dimension(2)                                        :: key
         LOGICAL                                               :: res
         TYPE(private_item_type_i4tuple_callstat), POINTER                      :: item
         INTEGER(KIND=int_8)                                   :: hash, idx

         IF (.not. ASSOCIATED(dict%buckets)) &
            DBCSR_ABORT("dict_i4tuple_callstat_haskey: dictionary is not initialized.")

         res = .FALSE.
         IF (dict%size == 0) RETURN

         hash = hash_i4tuple (key)
         idx = MOD(hash, INT(size(dict%buckets), KIND=int_8)) + 1

         item => dict%buckets(idx)%p
         do while (ASSOCIATED(item))
            IF (item%hash == hash) THEN
               IF (ALL(item%key==key)) THEN
                  res = .TRUE.
                  return
               END IF
            END IF
            item => item%next
         end do

      END FUNCTION dict_i4tuple_callstat_haskey