You can get a memory pointer to a lisp object. a:=Fraction(Integer)
returns the "memory location of Fraction(Integer)" You can prove this with b:=Fraction(Integer) EQ(a,b)$Lisp The lisp function EQ compares memory pointers. There is a lisp function to get the hash value of any object call sxhash. You can call it. SXHASH(a)$Lisp Note that if c:=Integer then EQ(a,c)$Lisp is false SXHASH(a)$Lisp is not equal to SXHASH(c)$Lisp Thus the hash function you seek already exists. You just have to accept the fact that Spad is only syntactic sugar for lisp code and lisp is not evil. Tim _______________________________________________ Axiom-developer mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/axiom-developer
