static BloomFilter *
bloom_create(float8 p, uint64_t n)
{
if (p <= 0 || p >= 1)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("p must be in [0, 1]")));
if (n < 1)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("n must be non-zero")));
return BloomFilterCreateWithPAndN(p, n);
}
END_TEST
START_TEST(test_false_positives)
{
float p = 0.01;
int n = 10000;
BloomFilter *bf = BloomFilterCreateWithPAndN(p, n);
float fp = 0;
int i;
for (i = 0; i < n; i++)
BloomFilterAdd(bf, &i, sizeof(int));
for (i = 0; i < n; i++)
{
int r = rand();
if (BloomFilterContains(bf, &r, sizeof(int)))
fp++;
}
ck_assert_int_le(fp / n, p);
}