ModulusGF.h Example File

 #ifndef __MODULUS_GF_PDF_H__
 #define __MODULUS_GF_PDF_H__
 /*
  * Copyright 2012 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  * 2012-09-17 HFN translation from Java into C++
  */

 #include <zxing/common/Counted.h>
 #include <zxing/common/Array.h>
 #include <zxing/common/DecoderResult.h>
 #include <zxing/common/BitMatrix.h>

 namespace zxing {
 namespace pdf417 {
 namespace decoder {
 namespace ec {

 class ModulusPoly;

 /**
  * <p>A field based on powers of a generator integer, modulo some modulus.</p>
  *
  * @author Sean Owen
  * @see com.google.zxing.common.reedsolomon.GenericGF
  */
 class ModulusGF {

   public:
         static ModulusGF PDF417_GF;

   private:
         ArrayRef<int> expTable_;
         ArrayRef<int> logTable_;
         Ref<ModulusPoly> zero_;
         Ref<ModulusPoly> one_;
         int modulus_;

   public:
         ModulusGF(int modulus, int generator);
         Ref<ModulusPoly> getZero();
         Ref<ModulusPoly> getOne();
         Ref<ModulusPoly> buildMonomial(int degree, int coefficient);

         int add(int a, int b);
         int subtract(int a, int b);
         int exp(int a);
         int log(int a);
         int inverse(int a);
         int multiply(int a, int b);
         int getSize();

 };

 }
 }
 }
 }

 #endif /* __MODULUS_GF_PDF_H__ */