text: // Copyright 2014 PDFium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
  
  #ifndef FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
  #define FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
  
  #include <memory>
  #include <vector>
  
  #include "core/fxcrt/unowned_ptr.h"
  
  class CBC_ReedSolomonGF256;
  
  class CBC_ReedSolomonGF256Poly final {
   public:
    CBC_ReedSolomonGF256Poly(CBC_ReedSolomonGF256* field,
                             const std::vector<int32_t>& coefficients);
    ~CBC_ReedSolomonGF256Poly();
  
    int32_t GetCoefficients(int32_t degree) const;
    const std::vector<int32_t>& GetCoefficients() const;
    int32_t GetDegree() const;
    bool IsZero() const;
    std::unique_ptr<CBC_ReedSolomonGF256Poly> AddOrSubtract(
        const CBC_ReedSolomonGF256Poly* other);
    std::unique_ptr<CBC_ReedSolomonGF256Poly> Multiply(
        const CBC_ReedSolomonGF256Poly* other);
    std::unique_ptr<CBC_ReedSolomonGF256Poly> Multiply(int32_t scalar);
    std::unique_ptr<CBC_ReedSolomonGF256Poly> MultiplyByMonomial(
        int32_t degree,
        int32_t coefficient) const;
    std::unique_ptr<CBC_ReedSolomonGF256Poly> Divide(
        const CBC_ReedSolomonGF256Poly* other);
    std::unique_ptr<CBC_ReedSolomonGF256Poly> Clone() const;
  
   private:
    UnownedPtr<CBC_ReedSolomonGF256> const m_field;
    std::vector<int32_t> m_coefficients;
  };
  
  #endif  // FXBARCODE_COMMON_REEDSOLOMON_BC_REEDSOLOMONGF256POLY_H_
  