all f_lambda modulo modulo %
all f_lambda remainder
all f_lambda quotient
+all f_lambda floor_quotient floor-quotient
all f_lambda equal = eq? eqv?
all f_lambda less < string<?
all f_lambda greater > string>?
all f_lambda not
all f_lambda listp list?
all f_lambda pairp pair?
-FLOAT f_lambda integerp integer? exact? exact-integer?
+all f_lambda integerp integer? exact? exact-integer?
all f_lambda numberp number? real?
all f_lambda booleanp boolean?
all f_lambda set_car set-car!