private static void writeBloomFilterStats(JsonWriter writer, BloomFilter bf)
{
int bitCount = bf.getBitSize();
int popCount = 0;
foreach (long l in bf.getBitSet())
{
popCount += Long.NumberOfOnes(l);
}
int k = bf.getNumHashFunctions();
float loadFactor = (float)popCount / (float)bitCount;
float expectedFpp = (float)Math.Pow(loadFactor, k);
writer.key("numHashFunctions").value(k);
writer.key("bitCount").value(bitCount);
writer.key("popCount").value(popCount);
writer.key("loadFactor").value(loadFactor);
writer.key("expectedFpp").value(expectedFpp);
}
