sig
val build_default_overloaded_fn_code :
Code_selection_context.code_selection_context ->
Xquery_common_ast.cfname ->
int ->
Xquery_algebra_ast.aoverloaded_signature_table ->
Execution_context.algebra_context ->
Physical_value.item list array -> Physical_value.item list
val build_overloaded_fn_code :
Code_selection_context.code_selection_context ->
Algebra_type.algop_expr ->
(Xquery_common_ast.cfname * int) *
Xquery_algebra_ast.aoverloaded_signature_table ->
Algebra_type.alg_eval_code_dep *
Code_selection_context.code_selection_context
end