py: Make long ints hashable.
Addresses issue #765.
diff --git a/py/objint_longlong.c b/py/objint_longlong.c
index 637d9c3..466b45c 100644
--- a/py/objint_longlong.c
+++ b/py/objint_longlong.c
@@ -55,6 +55,16 @@
const mp_obj_int_t mp_maxsize_obj = {{&mp_type_int}, INT_MAX};
#endif
+mp_int_t mp_obj_int_hash(mp_obj_t self_in) {
+ if (MP_OBJ_IS_SMALL_INT(self_in)) {
+ return MP_OBJ_SMALL_INT_VALUE(self_in);
+ }
+ mp_obj_int_t *self = self_in;
+ // truncate value to fit in mp_int_t, which gives the same hash as
+ // small int if the value fits without truncation
+ return self->val;
+}
+
bool mp_obj_int_is_positive(mp_obj_t self_in) {
if (MP_OBJ_IS_SMALL_INT(self_in)) {
return MP_OBJ_SMALL_INT_VALUE(self_in) >= 0;