Method add_hashed

datafusion/functions-aggregate/src/hyperloglog.rs:115–119

(&mut self, hash: u64)

    /// by [`Self::add`].
    #[inline]
    pub(crate) fn add_hashed(&mut self, hash: u64) {
        let index = (hash & HLL_P_MASK) as usize;
        let p = ((hash >> HLL_P) | (1_u64 << HLL_Q)).trailing_zeros() + 1;
        self.registers[index] = self.registers[index].max(p as u8);
    }

    /// Get the register histogram (each value in register index into
    /// the histogram; u32 is enough because we only have 2**14=16384 registers