[ t ] [ 0 >bignum zero? ] unit-test
[ 4294967280 ] [ 268435455 >fixnum 16 fixnum* ] unit-test
+
+[ 23603949310011464311086123800853779733506160743636399259558684142844552151041 ]
+[
+ 1957739506503920732625800353008742584087090810400921800808997218266517557963281171906190947801528098188887586755474449585677502695226712388326288208691204
+ 79562815144503850065234921197651376510595262628033069372760833939060637564931
+ bignum-mod
+] unit-test
#define UNREGISTER_C_STRING(obj) \
if(obj##_root) obj = alien_offset(root_pop())
-#define REGISTER_BIGNUM(obj) root_push(tag_bignum(obj))
-#define UNREGISTER_BIGNUM(obj) obj = (untag_bignum_fast(root_pop()))
+#define REGISTER_BIGNUM(obj) if(obj) root_push(tag_bignum(obj))
+#define UNREGISTER_BIGNUM(obj) if(obj) obj = (untag_bignum_fast(root_pop()))
INLINE void *allot_zone(F_ZONE *z, CELL a)
{