24 f_lexpr modulo modulo %
27 f_lexpr equal = eq? eqv?
31 f_lexpr greater_equal >=
32 f_lambda list_to_string list->string
33 f_lambda string_to_list string->list
39 f_lambda call_cc call-with-current-continuation call/cc
45 f_lambda numberp number? integer?
46 f_lambda booleanp boolean?
47 f_lambda set_car set-car!
48 f_lambda set_cdr set-cdr!
49 f_lambda symbolp symbol?
50 f_lambda symbol_to_string symbol->string
51 f_lambda string_to_symbol string->symbol
52 f_lambda stringp string?
53 f_lambda procedurep procedure?