+ossl_sa_TYPE_doall() calls the function B<leaf> for each element in B<sa>
+in ascending index order. The index position, within the sparse array,
+of each item is passed as the first argument to the leaf function and a
+pointer to the associated value is is passed as the second argument.
+
+ossl_sa_TYPE_doall_arg() calls the function B<leaf> for each element in
+B<sa> in ascending index order. The index position, within the sparse
+array, of each item is passed as the first argument to the leaf function,
+a pointer to the associated value is passed as the second argument and
+the third argument is the user supplied B<arg>.