(assert (subtypep 'complex '(complex real)))
(assert (subtypep '(complex real) 'complex))
(assert (subtypep '(complex (eql 1)) '(complex (member 1 2))))
+(assert (subtypep '(complex ratio) '(complex rational)))
+(assert (subtypep '(complex ratio) 'complex))
(assert (equal (multiple-value-list
(subtypep '(complex (integer 1 2))
'(member #c(1 1) #c(1 2) #c(2 1) #c(2 2))))