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ZXModulusGF.h 1.2KB

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  1. /*
  2. * Copyright 2012 ZXing authors
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. @class ZXModulusPoly;
  17. /**
  18. * A field based on powers of a generator integer, modulo some modulus.
  19. */
  20. @interface ZXModulusGF : NSObject
  21. @property (nonatomic, strong, readonly) ZXModulusPoly *one;
  22. @property (nonatomic, strong, readonly) ZXModulusPoly *zero;
  23. + (ZXModulusGF *)PDF417_GF;
  24. - (id)initWithModulus:(int)modulus generator:(int)generator;
  25. - (ZXModulusPoly *)buildMonomial:(int)degree coefficient:(int)coefficient;
  26. - (int)add:(int)a b:(int)b;
  27. - (int)subtract:(int)a b:(int)b;
  28. - (int)exp:(int)a;
  29. - (int)log:(int)a;
  30. - (int)inverse:(int)a;
  31. - (int)multiply:(int)a b:(int)b;
  32. - (int)size;
  33. @end