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| author | Luke T. Shumaker <lukeshu@lukeshu.com> | 2024-12-26 18:36:11 -0700 |
|---|---|---|
| committer | Luke T. Shumaker <lukeshu@lukeshu.com> | 2024-12-26 18:36:11 -0700 |
| commit | e783ff4d07ecb0a7bae90651c17735069a094a82 (patch) | |
| tree | 4e645373fd7ac701fc2e7e881c6ed97f62f7bb5a /libmisc/tests/test_rand.c | |
| parent | 10a55a6507a905bafba4b549a926d711c4253007 (diff) | |
libmisc: test_rand: Avoid divide-by-zero, even if its result is ignored
Diffstat (limited to 'libmisc/tests/test_rand.c')
| -rw-r--r-- | libmisc/tests/test_rand.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libmisc/tests/test_rand.c b/libmisc/tests/test_rand.c index 295ea61..282c6a4 100644 --- a/libmisc/tests/test_rand.c +++ b/libmisc/tests/test_rand.c @@ -48,14 +48,14 @@ static void test_n(uint64_t cnt) { bool seen[MAX_SEE_ALL] = {0}; for (int i = 0; i < ROUNDS; i++) { uint64_t val = rand_uint63n(cnt); - sum += ((double)val)/(cnt-1); + sum += val; test_assert(val < cnt); if (cnt < MAX_SEE_ALL) seen[val] = true; } if (cnt > 1) { - test_assert(sum/ROUNDS > 0.45); - test_assert(sum/ROUNDS < 0.55); + test_assert(sum/ROUNDS > 0.45*(cnt-1)); + test_assert(sum/ROUNDS < 0.55*(cnt-1)); } if (cnt < MAX_SEE_ALL) { for (uint64_t i = 0; i < cnt; i++) |