Method batch_data_bytes

include/rabitqlib/index/ivf/ivf.hpp:58–65

get num of bytes used for 1-bit code and corresponding factors

    // get num of bytes used for 1-bit code and corresponding factors
    [[nodiscard]] size_t batch_data_bytes(const std::vector<size_t>& cluster_sizes) const {
        assert(cluster_sizes.size() == num_cluster_);  // num of clusters
        size_t total_blocks = 0;
        for (auto size : cluster_sizes) {
            total_blocks += div_round_up(size, fastscan::kBatchSize);
        }
        return total_blocks * BatchDataMap<float>::data_bytes(padded_dim_);
    }

    [[nodiscard]] size_t ex_data_bytes() const {
        return ExDataMap<float>::data_bytes(padded_dim_, ex_bits_) * num_;
    }