1 | //$Id$ |
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2 | |
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3 | |
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4 | |
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5 | #ifndef POLYCPP_HEADER |
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6 | #define POLYCPP_HEADER |
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7 | #include <kernel/mod2.h> |
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8 | #include <kernel/IIntvec.h> |
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9 | #include <coeffs/numbers.h> |
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10 | #include <kernel/Number.h> |
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11 | #include <kernel/febase.h> |
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12 | #include <polys/polys.h> |
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13 | #include <polys/monomials/ring.h> |
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14 | |
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15 | |
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16 | #include <boost/shared_ptr.hpp> |
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17 | |
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18 | #include <vector> |
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19 | #include <exception> |
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20 | using std::exception; |
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21 | |
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22 | #define BOOST_DISABLE_THREADS |
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23 | |
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24 | class DifferentDomainException: public exception{ |
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25 | |
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26 | }; |
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27 | class ExceptionBasedErrorHandler{ |
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28 | public: |
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29 | static const bool handleErrors=true; |
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30 | static void handleDifferentRing(ring r, ring s){ |
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31 | PrintS("throwing"); |
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32 | throw DifferentDomainException(); |
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33 | } |
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34 | }; |
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35 | |
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36 | //PolyImpl is a 08/15 poly wrapper |
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37 | //Poly wraps around PolyImpl with reference counting using boost |
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38 | class TrivialErrorHandler{ |
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39 | public: |
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40 | static const bool handleErrors=false; |
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41 | static void handleDifferentRing(ring r, ring s){ |
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42 | } |
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43 | }; |
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44 | typedef TrivialErrorHandler MyErrorHandler; |
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45 | class PolyImpl{ |
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46 | template <poly_variant,class,class> friend class PolyBase; |
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47 | //friend class PolyBase<POLY_VARIANT_RING,Poly,TrivialErrorHandler>; |
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48 | //friend class PolyBase<POLY_VARIANT_MODUL,Vector, TrivialErrorHandler>; |
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49 | //friend class PolyBase<POLY_VARIANT_MODUL>; |
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50 | friend class Poly; |
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51 | friend class Vector; |
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52 | //friend class Number; |
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53 | protected: |
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54 | poly getInternalReference() const{ |
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55 | return p; |
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56 | } |
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57 | public: |
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58 | ring getRing() const{ |
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59 | return r.get(); |
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60 | } |
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61 | friend inline bool operator==(const Poly& p1, const Poly& p2); |
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62 | friend inline bool operator==(const Vector& p1, const Vector& p2); |
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63 | friend PolyImpl operator+(const PolyImpl& p1, const PolyImpl& n2); |
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64 | friend PolyImpl operator-(const PolyImpl& p1, const PolyImpl& n2); |
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65 | friend PolyImpl operator/(const PolyImpl& p1, const PolyImpl& n2); |
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66 | friend PolyImpl operator*(const PolyImpl& p1, const PolyImpl& n2); |
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67 | friend bool operator==(const PolyImpl& p1, const PolyImpl& n2); |
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68 | friend PolyImpl operator+(const PolyImpl& p1, int n2); |
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69 | friend PolyImpl operator-(const PolyImpl& p1, int n2); |
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70 | friend PolyImpl operator/(const PolyImpl& p1, int n2); |
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71 | friend PolyImpl operator*(const PolyImpl& p1, int n2); |
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72 | friend bool operator==(const PolyImpl& p1, int n2); |
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73 | Number leadCoef(){ |
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74 | return Number(p->coef,r.get()); |
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75 | } |
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76 | PolyImpl& operator=(const PolyImpl& p2){ |
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77 | //durch Reihenfolge Selbstzuweisungen berücksichtigt |
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78 | if (this==&p2) return *this; |
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79 | poly pc=p_Copy(p2.p,p2.r.get()); |
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80 | if(r!=NULL) |
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81 | p_Delete(&p,r.get()); |
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82 | r=p2.r; |
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83 | p=pc; |
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84 | return *this; |
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85 | } |
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86 | PolyImpl operator-(){ |
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87 | PolyImpl t(*this); |
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88 | t.p=p_Copy(p,r.get()); |
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89 | t.p=p_Neg(t.p,r.get()); |
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90 | return t; |
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91 | } |
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92 | PolyImpl& operator+=(const PolyImpl & p2){ |
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93 | if (r!=p2.r){ |
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94 | Werror("not the same ring"); |
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95 | return *this; |
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96 | } |
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97 | if (this==&p2){ |
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98 | number two=n_Init(2,r.get()); |
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99 | p_Mult_nn(p,two,r.get()); |
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100 | return *this; |
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101 | } |
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102 | p=p_Add_q(p,p_Copy(p2.p,p2.r.get()),r.get()); |
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103 | |
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104 | return *this; |
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105 | } |
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106 | PolyImpl& operator*=(const PolyImpl & p2){ |
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107 | if (r!=p2.r){ |
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108 | Werror("not the same ring"); |
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109 | return *this; |
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110 | } |
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111 | if (this==&p2){ |
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112 | poly pc=p_Copy(p,r.get()); |
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113 | p=p_Mult_q(p,p2.p,r.get()); |
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114 | return *this; |
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115 | } |
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116 | p=p_Mult_q(p,p_Copy(p2.p,p2.r.get()),r.get()); |
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117 | return *this; |
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118 | } |
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119 | PolyImpl& operator*=(const Number & n){ |
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120 | if (r!=n.r){ |
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121 | Werror("not the same ring"); |
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122 | return *this; |
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123 | } |
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124 | |
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125 | p=p_Mult_nn(p,n.n,r.get()); |
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126 | return *this; |
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127 | } |
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128 | PolyImpl& operator-=(const PolyImpl & p2){ |
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129 | if (r!=p2.r){ |
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130 | Werror("not the same ring"); |
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131 | return *this; |
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132 | } |
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133 | if (this==&p2){ |
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134 | p_Delete(&p,r.get()); |
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135 | p=NULL; |
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136 | return *this; |
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137 | } |
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138 | |
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139 | poly pc=p_Copy(p2.p,p2.r.get()); |
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140 | pc=p_Neg(pc,r.get()); |
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141 | p=p_Add_q(p,pc,r.get()); |
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142 | |
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143 | |
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144 | return *this; |
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145 | } |
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146 | |
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147 | |
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148 | PolyImpl& operator=(int n){ |
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149 | |
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150 | p_Delete(&p,r.get()); |
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151 | p=p_ISet(n,r.get()); |
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152 | return *this; |
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153 | |
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154 | } |
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155 | |
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156 | |
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157 | PolyImpl(){ |
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158 | r=currRing; |
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159 | p=NULL; |
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160 | } |
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161 | PolyImpl(const PolyImpl & p){ |
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162 | r=p.r; |
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163 | this->p=p_Copy(p.p,r.get()); |
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164 | } |
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165 | PolyImpl(poly p, intrusive_ptr<ip_sring> r){ |
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166 | this->p=p_Copy(p,r.get()); |
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167 | this->r=r; |
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168 | } |
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169 | PolyImpl(poly p, intrusive_ptr<ip_sring> r,int){ |
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170 | this->p=p; |
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171 | this->r=r; |
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172 | } |
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173 | PolyImpl(int n, intrusive_ptr<ip_sring> r){ |
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174 | this->p=p_ISet(n,r.get()); |
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175 | this->r=r; |
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176 | } |
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177 | PolyImpl(const Number & n){ |
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178 | |
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179 | r=n.r.get(); |
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180 | this->p=p_NSet(n_Copy(n.n,r.get()),r.get()); |
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181 | |
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182 | } |
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183 | explicit PolyImpl(int n){ |
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184 | r=currRing; |
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185 | this->p=p_ISet(n,r.get()); |
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186 | } |
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187 | void print(){ |
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188 | p_Write(p,r.get(),r.get()); |
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189 | } |
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190 | |
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191 | virtual ~PolyImpl(){ |
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192 | if (r!=NULL) |
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193 | p_Delete(&p,r.get()); |
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194 | } |
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195 | |
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196 | protected: |
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197 | poly p; |
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198 | intrusive_ptr<ip_sring> r; |
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199 | |
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200 | }; |
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201 | |
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202 | inline PolyImpl operator+(const PolyImpl &p1, const PolyImpl& p2){ |
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203 | PolyImpl erg(p1); |
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204 | erg+=p2; |
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205 | return erg; |
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206 | } |
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207 | inline PolyImpl operator*(const PolyImpl &p1, const PolyImpl& p2){ |
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208 | PolyImpl erg(p1); |
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209 | erg*=p2; |
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210 | return erg; |
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211 | } |
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212 | inline PolyImpl operator-(const PolyImpl &p1, const PolyImpl& p2){ |
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213 | PolyImpl erg(p1); |
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214 | erg-=p2; |
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215 | return erg; |
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216 | } |
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217 | |
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218 | |
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219 | |
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220 | inline PolyImpl operator+(const PolyImpl &p1, int p2){ |
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221 | PolyImpl erg(p1); |
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222 | erg+=PolyImpl(p2,p1.r.get()); |
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223 | return erg; |
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224 | } |
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225 | inline PolyImpl operator*(const PolyImpl &p1, int p2){ |
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226 | PolyImpl erg(p1); |
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227 | erg*=PolyImpl(p2,p1.r.get()); |
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228 | return erg; |
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229 | } |
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230 | inline PolyImpl operator-(const PolyImpl &p1, int p2){ |
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231 | PolyImpl erg(p1); |
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232 | erg-=PolyImpl(p2,p1.r); |
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233 | return erg; |
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234 | } |
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235 | |
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236 | |
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237 | inline PolyImpl operator+(int p1, const PolyImpl& p2){ |
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238 | PolyImpl erg(p2); |
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239 | return erg+=PolyImpl(p1,p2.getRing()); |
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240 | } |
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241 | |
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242 | inline PolyImpl operator*(int p1, const PolyImpl& p2){ |
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243 | PolyImpl erg(p2); |
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244 | return erg*=PolyImpl(p1,p2.getRing()); |
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245 | } |
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246 | |
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247 | using namespace boost; |
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248 | |
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249 | |
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250 | template<class T> class ConstTermReference{ |
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251 | private: |
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252 | ring r; |
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253 | poly t; |
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254 | public: |
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255 | operator T() const { |
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256 | return T(p_Head(t,r),r); |
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257 | } |
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258 | ConstTermReference(poly p, ring r){ |
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259 | this->t=p; |
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260 | this->r=r; |
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261 | } |
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262 | bool isConstant() const{ |
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263 | return p_LmIsConstant(t,r); |
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264 | } |
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265 | |
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266 | }; |
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267 | |
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268 | template<class T> class PolyInputIterator: |
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269 | public std::iterator<std::input_iterator_tag,T,int, shared_ptr<const T>,ConstTermReference<T> > |
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270 | { |
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271 | |
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272 | |
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273 | private: |
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274 | poly t; |
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275 | ring r; |
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276 | public: |
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277 | bool operator==(const PolyInputIterator& t2){ |
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278 | return t2.t==t; |
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279 | } |
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280 | bool operator!=(const PolyInputIterator& t2){ |
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281 | return t2.t!=t; |
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282 | } |
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283 | PolyInputIterator(poly p, ring r){ |
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284 | t=p; |
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285 | this->r=r; |
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286 | } |
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287 | PolyInputIterator(const PolyInputIterator& it){ |
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288 | t=it.t; |
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289 | r=it.r; |
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290 | } |
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291 | PolyInputIterator& operator++(){ |
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292 | t=t->next; |
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293 | return *this; |
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294 | } |
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295 | PolyInputIterator operator++(int){ |
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296 | PolyInputIterator it(*this); |
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297 | ++(*this); |
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298 | return it; |
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299 | } |
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300 | const ConstTermReference<T> operator*(){ |
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301 | return ConstTermReference<T> (t,r); |
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302 | } |
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303 | shared_ptr<const T> operator->(){ |
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304 | return shared_ptr<const T>(new T(p_Head(t,r),r,0)); |
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305 | } |
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306 | |
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307 | }; |
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308 | |
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309 | template<poly_variant variant, class create_type_input, class error_handle_traits> class PolyBase{ |
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310 | private: |
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311 | typedef PolyBase<variant,create_type_input,error_handle_traits> ThisType; |
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312 | public: |
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313 | poly as_poly() const{ |
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314 | return p_Copy(ptr->p,ptr->getRing()); |
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315 | } |
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316 | template<class T> void checkIsSameRing(T& p){ |
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317 | if (error_handle_traits::handleErrors){ |
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318 | if (p.getRing()!=this->getRing()){ |
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319 | error_handle_traits::handleDifferentRing( |
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320 | this->getRing(), |
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321 | p.getRing() |
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322 | ); |
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323 | } |
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324 | } |
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325 | } |
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326 | typedef create_type_input create_type; |
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327 | typedef PolyInputIterator<create_type> iterator; |
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328 | Intvec leadExp(){ |
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329 | int nvars=rVar(ptr->r); |
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330 | Intvec res(nvars); |
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331 | for(int i=0;i<nvars;i++){ |
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332 | res[i]=p_GetExp(ptr->p,i+1,ptr->getRing()); |
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333 | } |
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334 | return res; |
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335 | } |
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336 | void copy_on_write(){ |
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337 | if (!ptr.unique()){ |
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338 | ptr.reset(new PolyImpl(*ptr)); |
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339 | } |
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340 | } |
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341 | void print() const { |
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342 | ptr->print(); |
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343 | } |
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344 | //* ressource managed by Singular |
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345 | char* c_string() const{ |
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346 | |
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347 | return p_String(ptr->p,ptr->getRing(),ptr->getRing()); |
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348 | } |
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349 | |
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350 | PolyBase(ring r=currRing):ptr(new PolyImpl((poly) NULL,r)){ |
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351 | } |
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352 | |
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353 | PolyBase(const char* c, ring r=currRing):ptr(new PolyImpl((poly)NULL,r)){ |
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354 | //p_Read takes no const so do |
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355 | char* cp=(char*) omalloc((strlen(c)+1)*sizeof(char)); |
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356 | strcpy(cp,c); |
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357 | p_Read(cp,ptr->p,r); |
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358 | omfree(cp); |
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359 | } |
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360 | PolyBase(const PolyBase&p):ptr(p.ptr){ |
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361 | } |
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362 | |
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363 | |
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364 | |
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365 | PolyBase& operator+=(const PolyBase& p2){ |
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366 | checkIsSameRing(p2); |
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367 | copy_on_write(); |
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368 | *ptr += *p2.ptr; |
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369 | |
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370 | return *this; |
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371 | } |
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372 | PolyBase& operator*=(const Poly & p2); |
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373 | PolyBase& operator*=(Number n){ |
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374 | copy_on_write(); |
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375 | *ptr *=n; |
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376 | |
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377 | return *this; |
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378 | } |
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379 | /* void print(){ |
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380 | StringSetS(""); |
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381 | write(); |
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382 | PrintS(StringAppendS("")); |
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383 | }*/ |
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384 | virtual ~PolyBase(){} |
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385 | PolyBase(poly p, ring r):ptr(new PolyImpl(p_Copy(p,r),r)){ |
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386 | } |
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387 | PolyBase(poly p, ring r,int):ptr(new PolyImpl(p,r,0)){ |
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388 | } |
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389 | /*Poly(Poly& p){ |
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390 | ptr=p.ptr; |
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391 | }*/ |
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392 | |
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393 | PolyInputIterator<create_type> begin(){ |
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394 | return PolyInputIterator<create_type>(ptr->p,ptr->getRing()); |
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395 | } |
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396 | PolyInputIterator<create_type> end(){ |
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397 | return PolyInputIterator<create_type>(NULL, ptr->getRing()); |
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398 | } |
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399 | ring getRing() const{ |
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400 | return ptr->getRing(); |
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401 | } |
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402 | int lmTotalDegree() const{ |
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403 | return pTotaldegree(ptr->p); |
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404 | } |
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405 | Number leadCoef(){ |
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406 | return ptr->leadCoef(); |
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407 | } |
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408 | create_type operator-(){ |
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409 | create_type erg(*this); |
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410 | erg*=Number(-1,ptr->getRing()); |
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411 | return erg; |
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412 | } |
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413 | protected: |
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414 | |
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415 | PolyBase(PolyImpl& impl):ptr(&impl){ |
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416 | |
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417 | } |
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418 | poly getInternalReference(){ |
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419 | return ptr->getInternalReference(); |
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420 | } |
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421 | protected: |
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422 | |
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423 | shared_ptr<PolyImpl> ptr; |
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424 | |
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425 | }; |
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426 | |
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427 | class Poly: public PolyBase<POLY_VARIANT_RING, Poly, MyErrorHandler>{ |
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428 | private: |
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429 | typedef PolyBase<POLY_VARIANT_RING, Poly,MyErrorHandler> Base; |
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430 | friend class Vector; |
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431 | friend class PolyBase<POLY_VARIANT_MODUL,Vector,MyErrorHandler>; |
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432 | public: |
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433 | |
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434 | Poly(ring r=currRing):Base ((poly)NULL,r,0){ |
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435 | } |
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436 | Poly(int n, ring r=currRing):Base(*(new PolyImpl(n,r))){ |
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437 | |
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438 | } |
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439 | Poly(const char* c, ring r=currRing):Base(c,r){ |
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440 | |
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441 | } |
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442 | Poly(const Base& p):Base(p){ |
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443 | } |
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444 | |
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445 | Poly(const Number& n):Base(*(new PolyImpl(n))){ |
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446 | |
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447 | } |
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448 | Poly(poly p, ring r):Base(p,r){ |
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449 | |
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450 | } |
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451 | Poly(poly p, ring r, int):Base(p,r,0){ |
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452 | } |
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453 | Poly(const std::vector<int>& v, ring r=currRing):Base(*(new PolyImpl((poly) NULL,r))){ |
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454 | unsigned int i; |
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455 | int s=v.size(); |
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456 | poly p=p_ISet(1,r); |
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457 | for(i=0;i<v.size();i++){ |
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458 | pSetExp(p,i+1,v[i]); |
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459 | } |
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460 | pSetm(p); |
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461 | ptr.reset(new PolyImpl(p,r)); |
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462 | } |
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463 | /* Poly& operator+=(const Number& n){ |
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464 | Poly p2(n); |
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465 | ((PolyBase<POLY_VARIANT_RING, Poly>&) (*this))+=p2; |
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466 | return *this; |
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467 | }*/ |
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468 | Poly& operator+=(const Poly& p ){ |
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469 | |
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470 | ((Base&)*this)+=p; |
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471 | return *this; |
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472 | } |
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473 | Poly& operator+=(const Base& p ){ |
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474 | |
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475 | ((Base&)*this)+=p; |
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476 | return *this; |
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477 | } |
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478 | friend inline bool operator==(const Poly& p1, const Poly& p2); |
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479 | |
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480 | }; |
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481 | class Vector: public PolyBase<POLY_VARIANT_MODUL, Vector, MyErrorHandler>{ |
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482 | private: |
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483 | typedef PolyBase<POLY_VARIANT_MODUL, Vector, MyErrorHandler> Base; |
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484 | public: |
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485 | |
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486 | Vector(ring r=currRing):Base ((poly)NULL,r,0){ |
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487 | } |
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488 | Vector(int n, ring r=currRing):Base(*(new PolyImpl(n,r))){ |
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489 | |
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490 | } |
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491 | Vector(const char* c, ring r=currRing):Base(c,r){ |
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492 | |
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493 | } |
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494 | Vector(const Base& p):Base(p){ |
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495 | } |
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496 | |
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497 | |
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498 | Vector(poly p, ring r):Base(p,r){ |
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499 | |
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500 | } |
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501 | Vector(poly p, ring r, int):Base(p,r,0){ |
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502 | } |
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503 | Vector(std::vector<int> v, ring r=currRing):Base(*(new PolyImpl((poly) NULL,r))){ |
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504 | unsigned int i; |
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505 | int s=v.size(); |
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506 | poly p=p_ISet(1,r); |
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507 | for(i=0;i<v.size();i++){ |
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508 | pSetExp(p,i+1,v[i]); |
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509 | } |
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510 | pSetm(p); |
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511 | ptr.reset(new PolyImpl(p,r)); |
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512 | } |
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513 | /* Poly& operator+=(const Number& n){ |
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514 | Poly p2(n); |
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515 | ((PolyBase<POLY_VARIANT_MODUL, Poly>&) (*this))+=p2; |
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516 | return *this; |
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517 | }*/ |
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518 | Vector& operator+=(const Vector& p ){ |
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519 | |
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520 | ((Base&)*this)+=p; |
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521 | return *this; |
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522 | } |
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523 | Vector& operator+=(const Base& p ){ |
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524 | |
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525 | ((Base&)*this)+=p; |
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526 | return *this; |
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527 | } |
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528 | friend inline bool operator==(const Vector& p1, const Vector& p2); |
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529 | }; |
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530 | |
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531 | //typedef Poly PolyBase<POLY_VARIANT_RING>::create_type; |
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532 | /*template <poly_variant v, class c> inline PolyBase<v> operator+(const PolyBase<v,c>& p1, const PolyBase<v,c>& p2){ |
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533 | PolyImpl* res=new PolyImpl(*p1.ptr); |
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534 | *res+=*p2.ptr; |
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535 | return(PolyBase<v,c>(*res)); |
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536 | }*/ |
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537 | /*template <poly_variant v> inline PolyBase<v> operator*(const PolyBase<v>& p1, const PolyBase<v>& p2){ |
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538 | PolyImpl* res=new PolyImpl(*p1.ptr); |
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539 | *res *= *p2.ptr; |
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540 | return(PolyBase<v> (*res)); |
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541 | }*/ |
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542 | /*template <class c> inline PolyBase<POLY_VARIANT_MODUL> operator*(const PolyBase<POLY_VARIANT_MODUL>& p1, const Number& n){ |
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543 | PolyBase<POLY_VARIANT_MODUL> erg(p1); |
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544 | erg*=n; |
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545 | return erg; |
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546 | }*/ |
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547 | inline Poly operator*(const Poly& p, const Poly& p2){ |
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548 | Poly erg=p; |
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549 | erg*=p2; |
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550 | return erg; |
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551 | } |
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552 | inline Vector operator*(const Number& n, const Vector& v){ |
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553 | Vector res=v; |
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554 | res*=n; |
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555 | return res; |
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556 | } |
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557 | |
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558 | //assumes monomials commute with numbers |
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559 | template <poly_variant variant, class create_type, class error_traits> |
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560 | inline typename PolyBase<variant,create_type, error_traits>::create_type |
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561 | operator* |
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562 | (const Number& n, |
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563 | const PolyBase<variant,create_type, class error_tratis>& p) |
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564 | { |
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565 | typename PolyBase<variant, create_type,error_traits>::create_type erg(p); |
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566 | erg*=n; |
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567 | return erg; |
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568 | } |
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569 | |
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570 | inline Vector operator*(const Poly& p, const Vector& v){ |
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571 | Vector res(v); |
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572 | res*=p; |
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573 | return res; |
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574 | } |
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575 | inline Poly operator+(const Poly& p1, const Number& n){ |
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576 | Poly f(p1); |
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577 | f+=n; |
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578 | return f; |
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579 | } |
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580 | inline bool operator==(const Poly& p1, const Poly& p2){ |
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581 | ring r1=p1.getRing(); |
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582 | ring r2=p2.getRing(); |
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583 | if (r1!=r2) return false; |
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584 | return p_EqualPolys(p1.ptr->p,p2.ptr->p,r1); |
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585 | } |
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586 | inline bool operator==(const Vector& p1, const Vector& p2){ |
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587 | ring r1=p1.getRing(); |
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588 | ring r2=p2.getRing(); |
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589 | if (r1!=r2) return false; |
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590 | return p_EqualPolys(p1.ptr->p,p2.ptr->p,r1); |
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591 | } |
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592 | template <poly_variant variant, class create_type,class error_traits> |
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593 | inline typename PolyBase<variant,create_type,error_traits>::create_type |
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594 | operator+ |
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595 | (const PolyBase<variant,create_type,error_traits>& b1, |
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596 | const PolyBase<variant,create_type,error_traits>& b2) |
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597 | { |
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598 | typename PolyBase<variant, create_type, error_traits>::create_type erg(b1); |
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599 | erg+=b2; |
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600 | return erg; |
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601 | } |
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602 | inline Vector unitVector(int i,ring r=currRing){ |
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603 | poly p=p_ISet(1,r); |
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604 | p_SetComp(p,i,r); |
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605 | return Vector(p,r,0); |
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606 | } |
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607 | inline Poly operator*(const Number& n, const Poly & p){ |
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608 | Poly res=p; |
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609 | res*=n; |
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610 | return res; |
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611 | } |
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612 | template <poly_variant variant, class create_type, class error_traits> |
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613 | |
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614 | inline PolyBase<variant, create_type, error_traits>& |
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615 | PolyBase<variant, create_type, error_traits>::operator*=(const Poly & p2){ |
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616 | copy_on_write(); |
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617 | *ptr *= *p2.ptr; |
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618 | |
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619 | return *this; |
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620 | } |
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621 | #endif |
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