1 | #ifndef TGBGAUSS_HEADER |
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2 | #define TGBGAUSS_HEADER |
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3 | /**************************************** |
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4 | * Computer Algebra System SINGULAR * |
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5 | ****************************************/ |
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6 | /* |
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7 | * ABSTRACT: gauss implementation for F4 header |
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8 | */ |
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9 | // #include <kernel/mod2.h> |
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10 | #include <coeffs/numbers.h> |
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11 | #include <polys/monomials/p_polys.h> |
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12 | #include <omalloc/omallocClass.h> |
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13 | //#include "tgb_internal.h" |
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14 | |
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15 | class slimgb_alg; |
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16 | |
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17 | class tgb_matrix{ |
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18 | private: |
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19 | number** n; |
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20 | int columns; |
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21 | int rows; |
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22 | BOOLEAN free_numbers; |
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23 | public: |
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24 | tgb_matrix(int i, int j); |
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25 | ~tgb_matrix(); |
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26 | int get_rows(); |
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27 | int get_columns(); |
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28 | void print(); |
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29 | void perm_rows(int i, int j); |
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30 | void set(int i, int j, number n); |
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31 | number get(int i, int j); |
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32 | BOOLEAN is_zero_entry(int i, int j); |
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33 | void free_row(int row, BOOLEAN free_non_zeros=TRUE); |
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34 | int min_col_not_zero_in_row(int row); |
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35 | int next_col_not_zero(int row,int pre); |
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36 | BOOLEAN zero_row(int row); |
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37 | void mult_row(int row,number factor); |
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38 | void add_lambda_times_row(int add_to,int summand,number factor); |
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39 | int non_zero_entries(int row); |
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40 | }; |
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41 | |
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42 | class mac_poly_r :public omallocClass |
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43 | { |
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44 | public: |
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45 | number coef; |
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46 | mac_poly_r* next; |
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47 | int exp; |
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48 | mac_poly_r():next(NULL){} |
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49 | }; |
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50 | //mac_polys exp are smaller iff they are greater by monomial ordering |
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51 | //corresponding to solving linear equations notation |
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52 | |
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53 | typedef mac_poly_r* mac_poly; |
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54 | |
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55 | class tgb_sparse_matrix{ |
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56 | private: |
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57 | ring r; |
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58 | mac_poly* mp; |
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59 | int columns; |
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60 | int rows; |
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61 | BOOLEAN free_numbers; |
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62 | public: |
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63 | void sort_rows(); |
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64 | friend poly free_row_to_poly(tgb_sparse_matrix* mat, int row, poly* monoms, int monom_index); |
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65 | friend void init_with_mac_poly(tgb_sparse_matrix* mat, int row, mac_poly m); |
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66 | tgb_sparse_matrix(int i, int j, ring rarg); |
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67 | ~tgb_sparse_matrix(); |
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68 | int get_rows(); |
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69 | int get_columns(); |
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70 | void print(); |
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71 | void row_normalize(int row); |
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72 | void row_content(int row); |
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73 | // void perm_rows(int i, int j); |
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74 | void perm_rows(int i, int j){ |
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75 | mac_poly h; |
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76 | h=mp[i]; |
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77 | mp[i]=mp[j]; |
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78 | mp[j]=h; |
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79 | } |
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80 | void set(int i, int j, number n); |
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81 | number get(int i, int j); |
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82 | BOOLEAN is_zero_entry(int i, int j); |
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83 | void free_row(int row, BOOLEAN free_non_zeros=TRUE); |
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84 | int min_col_not_zero_in_row(int row); |
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85 | int next_col_not_zero(int row,int pre); |
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86 | BOOLEAN zero_row(int row); |
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87 | void mult_row(int row,number factor); |
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88 | void add_lambda_times_row(int add_to,int summand,number factor); |
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89 | int non_zero_entries(int row); |
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90 | }; |
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91 | void simple_gauss(tgb_sparse_matrix* mat, slimgb_alg* c); |
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92 | void simple_gauss2(tgb_matrix* mat); |
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93 | |
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94 | |
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95 | |
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96 | mac_poly mac_p_add_ff_qq(mac_poly a, number f,mac_poly b); |
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97 | |
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98 | void mac_mult_cons(mac_poly p,number c); |
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99 | int mac_length(mac_poly p); |
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100 | |
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101 | //contrary to delete on the mac_poly_r, the coefficients are also destroyed here |
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102 | void mac_destroy(mac_poly p); |
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103 | |
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104 | #endif |
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