Add signed integers (arithmetics and some testing not implemented yet)

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 7 insertions, 1 deletions

diff --git a/libj2_minus_j2u.c b/libj2_minus_j2u.c
index c0609f9..f19c5b7 100644
--- a/libj2_minus_j2u.c
+++ b/libj2_minus_j2u.c
@@ -66,11 +66,17 @@ main(void)
 	}
 
 	for (i = 0; i < 256; i++) {
-		a.high = b.high = random_ju();
+		a.high = b.high = random_ju() >> 1;
 		a.low = b.low = random_ju();
 		minus_j2u(&a);
 		libj2_j2u_add_j2u(&a, &b);
 		EXPECT(libj2_j2u_is_zero(&a));
+
+		a.high = b.high ^= UINTMAX_MAX;
+		a.low = b.low ^= UINTMAX_MAX;
+		minus_j2u(&a);
+		libj2_j2u_add_j2u(&a, &b);
+		EXPECT(libj2_j2u_is_zero(&a));
 	}
 
 	return 0;