py/objint: Add mp_obj_int_get_uint_checked() helper.

Can be used where mp_obj_int_get_checked() will overflow due to the
sign-bit solely.  This returns an mp_uint_t, so it also verifies the given
integer is not negative.

Currently implemented only for mpz configurations.

1 files changed, 2 insertions, 0 deletions

diff --git a/py/obj.h b/py/obj.h
index 93433f924..ba4f4992f 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -748,6 +748,8 @@ void mp_obj_cell_set(mp_obj_t self_in, mp_obj_t obj);
 mp_int_t mp_obj_int_get_truncated(mp_const_obj_t self_in);
 // Will raise exception if value doesn't fit into mp_int_t
 mp_int_t mp_obj_int_get_checked(mp_const_obj_t self_in);
+// Will raise exception if value is negative or doesn't fit into mp_uint_t
+mp_uint_t mp_obj_int_get_uint_checked(mp_const_obj_t self_in);
 
 // exception
 #define mp_obj_is_native_exception_instance(o) (mp_obj_get_type(o)->make_new == mp_obj_exception_make_new)