qmatrix.h

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#ifndef FASTTEXT_QMATRIX_H
#define FASTTEXT_QMATRIX_H

#include <cstdint>
#include <istream>
#include <ostream>

#include <vector>
#include <memory>

#include "real.h"

#include "matrix.h"
#include "vector.h"

#include "productquantizer.h"

namespace fasttext {

class QMatrix {
  private:
    std::unique_ptr<ProductQuantizer> pq_;
    std::unique_ptr<ProductQuantizer> npq_;

    uint8_t* codes_;
    uint8_t* norm_codes_;

    bool qnorm_;

    int64_t m_;
    int64_t n_;

    int32_t codesize_;

  public:

    QMatrix();
    QMatrix(const Matrix&, int32_t, bool);
    ~QMatrix();

    int64_t getM() const;
    int64_t getN() const;

    void quantizeNorm(const Vector&);
    void quantize(const Matrix&);

    void addToVector(Vector& x, int32_t t) const;
    real dotRow(const Vector&, int64_t) const;

    void save(std::ostream&);
    void load(std::istream&);
};

}

#endif