+# --- Two's complement tests ---
+
+2cb {
+ "" "";
+ 00 00;
+ 000000 00000000000000000000;
+ 01 ff;
+ 0123456789abcdef fedcba9876543211;
+ 0123456789abcdef fffffffedcba9876543211;
+ 0100000000 ffffff00000000;
+ 00000000c1a4bc4b ffffffff3e5b43b5;
+ ffffffff3e5b43b5 00000000c1a4bc4b;
+}
+
+2cl {
+ "" "";
+ 00 00;
+ 000000 00000000000000000000;
+ 01 ff;
+ efcdab8967452301 1132547698badcfe;
+ efcdab8967452301 1132547698badcfeffffffff;
+ 0000000001 00000000ffffffff;
+ 4bbca4c100000000 b5435b3effffffff;
+ b5435b3effffffff 4bbca4c100000000;
+}
+