| 1 | /* emacs edit mode for this file is -*- C++ -*- */ |
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| 2 | /* $Id: int_poly.h,v 1.6 1998-06-26 16:15:08 schmidt Exp $ */ |
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| 3 | |
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| 4 | #ifndef INCL_INT_POLY_H |
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| 5 | #define INCL_INT_POLY_H |
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| 6 | |
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| 7 | #include <config.h> |
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| 8 | |
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| 9 | #ifndef NOSTREAMIO |
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| 10 | #include <iostream.h> |
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| 11 | #endif /* NOSTREAMIO */ |
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| 12 | |
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| 13 | #include "cf_defs.h" |
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| 14 | #include "int_cf.h" |
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| 15 | #include "variable.h" |
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| 16 | #include "canonicalform.h" |
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| 17 | |
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| 18 | |
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| 19 | class term { |
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| 20 | private: |
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| 21 | term * next; |
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| 22 | CanonicalForm coeff; |
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| 23 | int exp; |
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| 24 | public: |
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| 25 | term() : next(0), coeff(0), exp(0) {} |
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| 26 | term( term * n, const CanonicalForm & c, int e ) : next(n), coeff(c), exp(e) {} |
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| 27 | friend class InternalPoly; |
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| 28 | friend class CFIterator; |
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| 29 | }; |
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| 30 | |
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| 31 | typedef term * termList; |
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| 32 | |
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| 33 | |
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| 34 | class InternalPoly : public InternalCF { |
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| 35 | private: |
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| 36 | termList firstTerm, lastTerm; |
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| 37 | Variable var; |
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| 38 | InternalPoly( termList, termList, const Variable & ); |
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| 39 | |
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| 40 | static termList copyTermList ( termList, termList&, bool negate = false ); |
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| 41 | static termList deepCopyTermList ( termList, termList& ); |
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| 42 | static void freeTermList ( termList ); |
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| 43 | static void negateTermList ( termList ); |
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| 44 | static termList addTermList ( termList, termList, termList&, bool negate ); |
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| 45 | static void mulTermList ( termList, const CanonicalForm& , const int ); |
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| 46 | static termList divideTermList ( termList, const CanonicalForm&, termList& ); |
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| 47 | static termList divTermList ( termList, const CanonicalForm&, termList& ); |
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| 48 | static termList modTermList ( termList, const CanonicalForm&, termList& ); |
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| 49 | static void appendTermList ( termList&, termList&, const CanonicalForm&, const int ); |
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| 50 | static termList mulAddTermList ( termList theList, termList aList, const CanonicalForm & c, const int exp, termList & lastTerm, bool negate ); |
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| 51 | static termList reduceTermList ( termList first, termList redterms, termList & last ); |
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| 52 | public: |
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| 53 | InternalPoly(); |
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| 54 | InternalPoly( const Variable & v, const int e, const CanonicalForm& c ); |
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| 55 | InternalPoly( const InternalPoly& ); |
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| 56 | ~InternalPoly(); |
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| 57 | InternalCF* deepCopyObject() const; |
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| 58 | const char * const classname() const { return "InternalPoly"; } |
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| 59 | int level() const { return var.level(); } |
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| 60 | Variable variable() const { return var; } |
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| 61 | int degree(); |
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| 62 | CanonicalForm lc(); |
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| 63 | CanonicalForm Lc(); |
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| 64 | CanonicalForm LC(); |
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| 65 | int taildegree(); |
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| 66 | CanonicalForm tailcoeff(); |
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| 67 | CanonicalForm coeff( int i ); |
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| 68 | #ifndef NOSTREAMIO |
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| 69 | void print( ostream&, char* ); |
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| 70 | #endif /* NOSTREAMIO */ |
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| 71 | bool inBaseDomain() const { return false; } |
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| 72 | bool inExtension() const { return var.level() < 0; } |
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| 73 | bool inCoeffDomain() const { return var.level() < 0; } |
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| 74 | bool inPolyDomain() const { return var.level() > 0; } |
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| 75 | bool inQuotDomain() const { return false; } |
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| 76 | InternalCF* genZero(); |
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| 77 | InternalCF* genOne(); |
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| 78 | |
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| 79 | bool isUnivariate() const; |
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| 80 | |
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| 81 | InternalCF* neg(); |
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| 82 | InternalCF* invert(); |
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| 83 | |
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| 84 | int comparesame ( InternalCF* ); |
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| 85 | |
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| 86 | InternalCF* addsame( InternalCF* ); |
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| 87 | InternalCF* subsame( InternalCF* ); |
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| 88 | InternalCF* mulsame( InternalCF* ); |
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| 89 | InternalCF* dividesame( InternalCF* ); |
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| 90 | InternalCF* modulosame( InternalCF* ); |
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| 91 | InternalCF* divsame( InternalCF* ); |
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| 92 | InternalCF* modsame( InternalCF* ); |
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| 93 | void divremsame( InternalCF*, InternalCF*&, InternalCF*& ); |
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| 94 | bool divremsamet( InternalCF*, InternalCF*&, InternalCF*& ); |
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| 95 | |
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| 96 | int comparecoeff ( InternalCF* ); |
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| 97 | |
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| 98 | InternalCF* addcoeff( InternalCF* ); |
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| 99 | InternalCF* subcoeff( InternalCF*, bool ); |
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| 100 | InternalCF* mulcoeff( InternalCF* ); |
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| 101 | InternalCF* dividecoeff( InternalCF*, bool ); |
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| 102 | InternalCF* modulocoeff( InternalCF*, bool ); |
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| 103 | InternalCF* divcoeff( InternalCF*, bool ); |
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| 104 | InternalCF* modcoeff( InternalCF*, bool ); |
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| 105 | void divremcoeff( InternalCF*, InternalCF*&, InternalCF*&, bool ); |
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| 106 | bool divremcoefft( InternalCF*, InternalCF*&, InternalCF*&, bool ); |
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| 107 | |
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| 108 | int sign() const; |
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| 109 | |
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| 110 | friend class CFIterator; |
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| 111 | }; |
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| 112 | |
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| 113 | #endif /* ! INCL_INT_POLY_H */ |
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