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-rw-r--r--src/test/test_util.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/src/test/test_util.c b/src/test/test_util.c
index 7ef4d1f78c..2a194ef840 100644
--- a/src/test/test_util.c
+++ b/src/test/test_util.c
@@ -1109,6 +1109,7 @@ test_util_pow2(void)
test_eq(tor_log2(64), 6);
test_eq(tor_log2(65), 6);
test_eq(tor_log2(63), 5);
+ test_eq(tor_log2(0), 0); /* incorrect mathematically, but as specified */
test_eq(tor_log2(1), 0);
test_eq(tor_log2(2), 1);
test_eq(tor_log2(3), 1);
@@ -1123,7 +1124,17 @@ test_util_pow2(void)
test_eq(round_to_power_of_2(130), 128);
test_eq(round_to_power_of_2(U64_LITERAL(40000000000000000)),
U64_LITERAL(1)<<55);
- test_eq(round_to_power_of_2(0), 2);
+ test_eq(round_to_power_of_2(U64_LITERAL(0xffffffffffffffff)),
+ U64_LITERAL(1)<<63);
+ test_eq(round_to_power_of_2(0), 1);
+ test_eq(round_to_power_of_2(1), 1);
+ test_eq(round_to_power_of_2(2), 2);
+ test_eq(round_to_power_of_2(3), 2);
+ test_eq(round_to_power_of_2(4), 4);
+ test_eq(round_to_power_of_2(4), 4);
+ test_eq(round_to_power_of_2(5), 4);
+ test_eq(round_to_power_of_2(6), 4);
+ test_eq(round_to_power_of_2(7), 8);
done:
;