1 | #ifndef COEFFS_H |
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2 | #define COEFFS_H |
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3 | /**************************************** |
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4 | * Computer Algebra System SINGULAR * |
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5 | ****************************************/ |
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6 | /* $Id$ */ |
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7 | /* |
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8 | * ABSTRACT |
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9 | */ |
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10 | |
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11 | #include <aux.h> |
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12 | |
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13 | enum n_coeffType |
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14 | { |
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15 | n_unknown=0, |
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16 | n_Zp, |
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17 | n_Q, |
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18 | n_R, |
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19 | n_GF, |
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20 | n_long_R, |
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21 | n_Zp_a, |
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22 | n_Q_a, |
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23 | n_long_C, |
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24 | // only used if HAVE_RINGS is defined |
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25 | n_Z, |
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26 | n_Zm, |
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27 | n_Zpn, |
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28 | n_Z2n |
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29 | }; |
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30 | |
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31 | struct n_Procs_s; |
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32 | typedef struct n_Procs_s n_Procs_s; |
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33 | typedef struct n_Procs_s *coeffs; |
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34 | |
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35 | |
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36 | |
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37 | struct snumber; |
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38 | typedef struct snumber * number; |
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39 | typedef number (*numberfunc)(number a, number b, const coeffs r); |
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40 | |
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41 | /// maps "a", which lives in src, into dst |
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42 | typedef number (*nMapFunc)(number a, const coeffs src, const coeffs dst); |
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43 | |
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44 | struct n_Procs_s |
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45 | { |
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46 | coeffs next; |
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47 | unsigned int ringtype; /* 0 => coefficient field, 1 => coeffs from Z/2^m */ |
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48 | |
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49 | // general properties: |
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50 | /// TRUE, if nNew/nDelete/nCopy are dummies |
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51 | BOOLEAN has_simple_Alloc; |
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52 | /// TRUE, if std should make polynomials monic (if nInvers is cheap) |
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53 | /// if false, then a gcd routine is required for a content computation |
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54 | BOOLEAN has_simple_Inverse; |
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55 | |
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56 | // tests for numbers.cc: |
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57 | BOOLEAN (*nCoeffIsEqual)(const coeffs r, n_coeffType n, int parameter); |
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58 | |
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59 | // the union stuff |
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60 | |
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61 | // Zp: |
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62 | int npPrimeM; |
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63 | int npPminus1M; |
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64 | #ifdef HAVE_DIV_MOD |
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65 | unsigned short *npInvTable; |
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66 | #endif |
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67 | #if !defined(HAVE_DIV_MOD) || !defined(HAVE_MULT_MOD) |
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68 | unsigned short *npExpTable; |
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69 | unsigned short *npLogTable; |
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70 | #endif |
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71 | // Zp_a, Q_a |
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72 | // ? |
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73 | // initialisation: |
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74 | void (*cfInitChar)(coeffs r, int parameter); // do one-time initialisations |
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75 | void (*cfKillChar)(coeffs r); // undo all initialisations |
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76 | // or NULL |
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77 | void (*cfSetChar)(const coeffs r); // initialisations after each ring change |
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78 | // or NULL |
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79 | // general stuff |
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80 | numberfunc nMult, nSub ,nAdd ,nDiv, nIntDiv, nIntMod, nExactDiv; |
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81 | /// init with an integer |
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82 | number (*cfInit)(int i,const coeffs r); |
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83 | number (*nPar)(int i, const coeffs r); |
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84 | int (*nParDeg)(number n, const coeffs r); |
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85 | /// how complicated, (0) => 0, or positive |
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86 | int (*nSize)(number n, const coeffs r); |
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87 | /// convertion, 0 if impossible |
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88 | int (*n_Int)(number &n, const coeffs r); |
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89 | #ifdef HAVE_RINGS |
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90 | int (*nDivComp)(number a,number b,const coeffs r); |
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91 | BOOLEAN (*nIsUnit)(number a,const coeffs r); |
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92 | number (*nGetUnit)(number a,const coeffs r); |
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93 | number (*nExtGcd)(number a, number b, number *s, number *t,const coeffs r); |
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94 | #endif |
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95 | /// changes argument inline: a:= -a |
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96 | number (*nNeg)(number a, const coeffs r); |
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97 | /// return 1/a |
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98 | number (*nInvers)(number a, const coeffs r); |
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99 | /// return a copy of a |
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100 | number (*cfCopy)(number a, const coeffs r); |
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101 | number (*nRePart)(number a, const coeffs r); |
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102 | number (*nImPart)(number a, const coeffs r); |
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103 | void (*cfWrite)(number &a, const coeffs r); |
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104 | const char * (*nRead)(const char * s, number * a, const coeffs r); |
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105 | void (*nNormalize)(number &a, const coeffs r); |
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106 | BOOLEAN (*nGreater)(number a,number b, const coeffs r), |
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107 | #ifdef HAVE_RINGS |
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108 | (*nDivBy)(number a, number b, const coeffs r), |
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109 | #endif |
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110 | /// tests |
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111 | (*nEqual)(number a,number b, const coeffs r), |
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112 | (*nIsZero)(number a, const coeffs r), |
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113 | (*nIsOne)(number a, const coeffs r), |
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114 | (*nIsMOne)(number a, const coeffs r), |
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115 | (*nGreaterZero)(number a, const coeffs r); |
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116 | void (*nPower)(number a, int i, number * result, const coeffs r); |
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117 | number (*cfGetDenom)(number &n, const coeffs r); |
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118 | number (*cfGetNumerator)(number &n, const coeffs r); |
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119 | number (*nGcd)(number a, number b, const coeffs r); |
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120 | number (*nLcm)(number a, number b, const coeffs r); |
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121 | void (*cfDelete)(number * a, const coeffs r); |
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122 | nMapFunc (*cfSetMap)(const coeffs src, const coeffs dst); |
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123 | |
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124 | /// For extensions (writes into global string buffer) |
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125 | char * (*nName)(number n, const coeffs r); |
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126 | |
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127 | /// Inline: a := b |
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128 | void (*nInpMult)(number &a, number b, const coeffs r); |
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129 | number (*nInit_bigint)(number i, const coeffs src, const coeffs dummy); |
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130 | |
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131 | #ifdef LDEBUG |
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132 | /// Test: is "a" a correct number? |
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133 | BOOLEAN (*nDBTest)(number a, const char *f,const int l,const coeffs r); |
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134 | #endif |
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135 | |
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136 | number nNULL; /* the 0 as constant */ |
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137 | int char_flag; |
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138 | int ref; |
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139 | n_coeffType type; |
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140 | ////----------------------------------------- |
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141 | char** parameter; /* names of parameters, rInit */ |
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142 | number minpoly; /* for Q_a/Zp_a, rInit */ |
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143 | |
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144 | #ifdef HAVE_RINGS |
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145 | int_number ringflaga; /* Z/(ringflag^ringflagb)=Z/nrnModul*/ |
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146 | unsigned long ringflagb; |
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147 | unsigned long nr2mModul; /* Z/nr2mModul */ |
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148 | int_number nrnModul; |
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149 | #endif |
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150 | int ch; /* characteristic, rInit */ |
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151 | |
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152 | short float_len; /* additional char-flags, rInit */ |
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153 | short float_len2; /* additional char-flags, rInit */ |
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154 | |
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155 | BOOLEAN ShortOut; /// ffields need this. |
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156 | |
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157 | }; |
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158 | |
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159 | #endif |
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160 | |
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