1 | // emacs edit mode for this file is -*- C++ -*- |
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2 | /**************************************** |
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3 | * Computer Algebra System SINGULAR * |
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4 | ****************************************/ |
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5 | // $Id: clapsing.cc,v 1.39 2009-08-06 07:21:58 Singular Exp $ |
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6 | /* |
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7 | * ABSTRACT: interface between Singular and factory |
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8 | */ |
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9 | |
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10 | //#define FACTORIZE2_DEBUG |
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11 | #include "mod2.h" |
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12 | #include "omalloc.h" |
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13 | #ifdef HAVE_FACTORY |
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14 | #define SI_DONT_HAVE_GLOBAL_VARS |
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15 | #include "structs.h" |
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16 | #include "clapsing.h" |
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17 | #include "numbers.h" |
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18 | #include "ring.h" |
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19 | #include "ffields.h" |
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20 | #include <factory.h> |
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21 | #include "clapconv.h" |
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22 | #include <factor.h> |
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23 | //CanonicalForm algcd(const CanonicalForm & F, const CanonicalForm & g, const CFList & as, const Varlist & order); |
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24 | CanonicalForm alg_gcd(const CanonicalForm &, const CanonicalForm &, const CFList &); |
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25 | #include "ring.h" |
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26 | |
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27 | // |
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28 | // FACTORY_GCD_TEST: use new gcd instead of old one. Does not work |
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29 | // without new gcd-implementation which is not publicly available. |
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30 | // |
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31 | // FACTORY_GCD_STAT: print statistics on polynomials. Works only |
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32 | // with the file `gcd_stat.cc' and `gcd_stat.h which may be found |
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33 | // in the repository, module `factory-devel'. |
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34 | // Overall statistics may printed using `system("gcdstat");'. |
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35 | // |
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36 | // FACTORY_GCD_TIMING: accumulate time used for gcd calculations. |
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37 | // Time may be printed (and reset) with `system("gcdtime");'. |
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38 | // For this define, `timing.h' from the factory source directory |
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39 | // has to be copied to the Singular source directory. |
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40 | // Note: for better readability, the macros `TIMING_START()' and |
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41 | // `TIMING_END()' are used in any case. However, they expand to |
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42 | // nothing if `FACTORY_GCD_TIMING' is off. |
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43 | // |
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44 | // FACTORY_GCD_DEBOUT: print polynomials involved in gcd calculations. |
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45 | // The polynomials are printed by means of the macros |
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46 | // `FACTORY_*OUT_POLY' which are defined to be empty if |
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47 | // `FACTORY_GCD_DEBOUT' is off. |
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48 | // |
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49 | // FACTORY_GCD_DEBOUT_PATTERN: print degree patterns of polynomials |
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50 | // involved in gcd calculations. |
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51 | // The patterns are printed by means of the macros |
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52 | // `FACTORY_*OUT_PAT' which are defined to be empty if |
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53 | // `FACTORY_GCD_DEBOUT_PATTERN' is off. |
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54 | // |
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55 | // A degree pattern looks like this: |
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56 | // |
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57 | // totDeg size deg(v1) deg(v2) ... |
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58 | // |
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59 | // where "totDeg" means total degree, "size" the number of terms, |
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60 | // and "deg(vi)" is the degree with respect to variable i. |
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61 | // In univariate case, the "deg(vi)" are missing. For this feature |
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62 | // you need the files `gcd_stat.cc' and `gcd_stat.h'. |
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63 | // |
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64 | // |
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65 | // And here is what the functions print if `FACTORY_GCD_DEBOUT' (1), |
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66 | // `FACTORY_GCD_STAT' (2), or `FACTORY_GCD_DEBOUT_PATTERN' (3) is on: |
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67 | // |
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68 | // sinclap_divide_content: |
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69 | // (1) G = <firstCoeff> |
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70 | // (3) G#= <firstCoeff, pattern> |
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71 | // (1) h = <nextCoeff> |
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72 | // (3) h#= <nextCoeff, pattern> |
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73 | // (2) gcnt: <statistics on gcd as explained above> |
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74 | // (1) g = <intermediateResult> |
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75 | // (3) g#= <intermediateResult, pattern> |
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76 | // (1) h = <nextCoeff> |
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77 | // (3) h#= <nextCoeff, pattern> |
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78 | // (2) gcnt: <statistics on gcd as explained above> |
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79 | // ... |
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80 | // (1) h = <lastCoeff> |
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81 | // (3) h#= <lastCoeff, pattern> |
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82 | // (1) g = <finalResult> |
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83 | // (3) g#= <finalResult, pattern> |
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84 | // (2) gcnt: <statistics on gcd as explained above> |
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85 | // (2) cont: <statistics on content as explained above> |
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86 | // |
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87 | // singclap_alglcm: |
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88 | // (1) f = <inputPolyF> |
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89 | // (3) f#= <inputPolyF, pattern> |
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90 | // (1) g = <inputPolyG> |
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91 | // (3) g#= <inputPolyG, pattern> |
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92 | // (1) d = <its gcd> |
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93 | // (3) d#= <its gcd, pattern> |
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94 | // (2) alcm: <statistics as explained above> |
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95 | // |
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96 | // singclap_algdividecontent: |
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97 | // (1) f = <inputPolyF> |
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98 | // (3) f#= <inputPolyF, pattern> |
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99 | // (1) g = <inputPolyG> |
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100 | // (3) g#= <inputPolyG, pattern> |
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101 | // (1) d = <its gcd> |
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102 | // (3) d#= <its gcd, pattern> |
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103 | // (2) acnt: <statistics as explained above> |
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104 | // |
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105 | |
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106 | #ifdef FACTORY_GCD_STAT |
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107 | #include "gcd_stat.h" |
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108 | #define FACTORY_GCDSTAT( tag, f, g, d ) \ |
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109 | printGcdStat( tag, f, g, d ) |
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110 | #define FACTORY_CONTSTAT( tag, f ) \ |
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111 | printContStat( tag, f ) |
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112 | #else |
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113 | #define FACTORY_GCDSTAT( tag, f, g, d ) |
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114 | #define FACTORY_CONTSTAT( tag, f ) |
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115 | #endif |
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116 | |
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117 | #ifdef FACTORY_GCD_TIMING |
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118 | #define TIMING |
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119 | #include "timing.h" |
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120 | TIMING_DEFINE_PRINT( contentTimer ); |
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121 | TIMING_DEFINE_PRINT( algContentTimer ); |
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122 | TIMING_DEFINE_PRINT( algLcmTimer ); |
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123 | #else |
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124 | #define TIMING_START( timer ) |
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125 | #define TIMING_END( timer ) |
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126 | #endif |
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127 | |
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128 | #ifdef FACTORY_GCD_DEBOUT |
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129 | #include "longalg.h" |
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130 | #include "febase.h" |
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131 | // napoly f |
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132 | #define FACTORY_ALGOUT_POLY( tag, f ) \ |
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133 | StringSetS( tag ); \ |
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134 | napWrite( f ); \ |
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135 | pRINtS(StringAppendS("\n")); |
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136 | // CanonicalForm f, represents transcendent extension |
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137 | #define FACTORY_CFTROUT_POLY( tag, f ) \ |
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138 | { \ |
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139 | napoly F=convFactoryPSingTr( f ); \ |
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140 | StringSetS( tag ); \ |
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141 | napWrite( F ); \ |
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142 | PrintS(StringAppendS("\n")); \ |
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143 | napDelete(&F); \ |
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144 | } |
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145 | // CanonicalForm f, represents algebraic extension |
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146 | #define FACTORY_CFAOUT_POLY( tag, f ) \ |
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147 | { \ |
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148 | napoly F=convFactoryASingA( f ); \ |
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149 | StringSetS( tag ); \ |
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150 | napWrite( F ); \ |
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151 | PrintS(StringAppendS("\n")); \ |
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152 | napDelete(&F); \ |
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153 | } |
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154 | #else /* ! FACTORY_GCD_DEBOUT */ |
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155 | #define FACTORY_ALGOUT_POLY( tag, f ) |
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156 | #define FACTORY_CFTROUT_POLY( tag, f ) |
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157 | #define FACTORY_CFAOUT_POLY( tag, f ) |
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158 | #endif /* ! FACTORY_GCD_DEBOUT */ |
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159 | |
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160 | #ifdef FACTORY_GCD_DEBOUT_PATTERN |
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161 | // napoly f |
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162 | #define FACTORY_ALGOUT_PAT( tag, f ) \ |
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163 | if (currRing->minpoly!=NULL) \ |
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164 | { \ |
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165 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); \ |
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166 | Variable a=rootOf(mipo); \ |
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167 | printPolyPattern( tag, convSingAFactoryA( f,a ), rPar( currRing ) ); \ |
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168 | } \ |
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169 | else \ |
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170 | { \ |
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171 | printPolyPattern( tag, convSingTrFactoryP( f ), rPar( currRing ) ); \ |
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172 | } |
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173 | // CanonicalForm f, represents transcendent extension |
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174 | #define FACTORY_CFTROUT_PAT( tag, f ) printPolyPattern( tag, f, rPar( currRing ) ) |
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175 | // CanonicalForm f, represents algebraic extension |
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176 | #define FACTORY_CFAOUT_PAT( tag, f ) printPolyPattern( tag, f, rPar( currRing ) ) |
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177 | #else /* ! FACTORY_GCD_DEBOUT_PATTERN */ |
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178 | #define FACTORY_ALGOUT_PAT( tag, f ) |
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179 | #define FACTORY_CFTROUT_PAT( tag, f ) |
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180 | #define FACTORY_CFAOUT_PAT( tag, f ) |
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181 | #endif /* ! FACTORY_GCD_DEBOUT_PATTERN */ |
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182 | |
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183 | // these macors combine both print macros |
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184 | #define FACTORY_ALGOUT( tag, f ) \ |
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185 | FACTORY_ALGOUT_POLY( tag " = ", f ); \ |
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186 | FACTORY_ALGOUT_PAT( tag "#= ", f ) |
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187 | #define FACTORY_CFTROUT( tag, f ) \ |
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188 | FACTORY_CFTROUT_POLY( tag " = ", f ); \ |
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189 | FACTORY_CFTROUT_PAT( tag "#= ", f ) |
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190 | #define FACTORY_CFAOUT( tag, f ) \ |
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191 | FACTORY_CFAOUT_POLY( tag " = ", f ); \ |
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192 | FACTORY_CFAOUT_PAT( tag "#= ", f ) |
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193 | |
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194 | |
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195 | void out_cf(char *s1,const CanonicalForm &f,char *s2); |
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196 | |
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197 | |
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198 | poly singclap_gcd ( poly f, poly g ) |
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199 | { |
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200 | poly res=NULL; |
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201 | |
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202 | if (f!=NULL) pCleardenom(f); |
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203 | if (g!=NULL) pCleardenom(g); |
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204 | else return f; // g==0 => gcd=f (but do a pCleardenom) |
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205 | if (f==NULL) return g; // f==0 => gcd=g (but do a pCleardenom) |
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206 | |
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207 | if (pIsConstantPoly(f) || pIsConstantPoly(g)) |
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208 | { |
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209 | pDelete(&f); |
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210 | pDelete(&g); |
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211 | return pOne(); |
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212 | } |
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213 | |
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214 | // for now there is only the possibility to handle polynomials over |
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215 | // Q and Fp ... |
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216 | Off(SW_RATIONAL); |
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217 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
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218 | && (currRing->parameter==NULL)) |
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219 | { |
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220 | CanonicalForm newGCD(const CanonicalForm & A, const CanonicalForm & B); |
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221 | setCharacteristic( nGetChar() ); |
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222 | CanonicalForm F( convSingPFactoryP( f ) ), G( convSingPFactoryP( g ) ); |
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223 | //if (nGetChar() > 1 ) |
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224 | //{ |
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225 | // res=convFactoryPSingP( newGCD( F,G )); |
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226 | // if (!nGreaterZero(pGetCoeff(res))) res=pNeg(res); |
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227 | //} |
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228 | //else |
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229 | res=convFactoryPSingP( gcd( F, G ) ); |
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230 | } |
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231 | // and over Q(a) / Fp(a) |
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232 | else if (( nGetChar()==1 ) /* Q(a) */ |
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233 | || (nGetChar() <-1)) /* Fp(a) */ |
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234 | { |
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235 | if (nGetChar()==1) setCharacteristic( 0 ); |
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236 | else setCharacteristic( -nGetChar() ); |
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237 | if (currRing->minpoly!=NULL) |
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238 | { |
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239 | #if 0 |
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240 | if (( nGetChar()==1 ) /* Q(a) */ && (!isOn(SW_USE_QGCD))) |
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241 | { |
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242 | // WerrorS( feNotImplemented ); |
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243 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
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244 | //Varlist ord; |
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245 | //ord.append(mipo.mvar()); |
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246 | CFList as(mipo); |
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247 | Variable a=rootOf(mipo); |
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248 | //CanonicalForm F( convSingAPFactoryAP( f,a ) ), G( convSingAPFactoryAP( g,a ) ); |
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249 | CanonicalForm F( convSingTrPFactoryP(f) ), G( convSingTrPFactoryP(g) ); |
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250 | //res= convFactoryAPSingAP( algcd( F, G, as, ord) ); |
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251 | //res= convFactoryAPSingAP( alg_gcd( F, G, as) ); |
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252 | res= convFactoryAPSingAP( alg_gcd( F, G, as) ); |
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253 | } |
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254 | else |
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255 | #endif |
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256 | { |
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257 | bool b=isOn(SW_USE_QGCD); |
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258 | if ( nGetChar()==1 ) On(SW_USE_QGCD); |
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259 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
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260 | Variable a=rootOf(mipo); |
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261 | CanonicalForm F( convSingAPFactoryAP( f,a ) ), G( convSingAPFactoryAP( g,a ) ); |
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262 | res= convFactoryAPSingAP( gcd( F, G ) ); |
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263 | if (!b) Off(SW_USE_QGCD); |
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264 | } |
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265 | } |
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266 | else |
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267 | { |
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268 | CanonicalForm F( convSingTrPFactoryP( f ) ), G( convSingTrPFactoryP( g ) ); |
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269 | res= convFactoryPSingTrP( gcd( F, G ) ); |
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270 | } |
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271 | } |
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272 | #if 0 |
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273 | else if (( nGetChar()>1 )&&(currRing->parameter!=NULL)) /* GF(q) */ |
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274 | { |
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275 | int p=rChar(currRing); |
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276 | int n=2; |
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277 | int t=p*p; |
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278 | while (t!=nChar) { t*=p;n++; } |
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279 | setCharacteristic(p,n,'a'); |
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280 | CanonicalForm F( convSingGFFactoryGF( f ) ), G( convSingGFFactoryGF( g ) ); |
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281 | res= convFactoryGFSingGF( gcd( F, G ) ); |
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282 | } |
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283 | #endif |
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284 | else |
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285 | WerrorS( feNotImplemented ); |
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286 | |
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287 | Off(SW_RATIONAL); |
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288 | pDelete(&f); |
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289 | pDelete(&g); |
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290 | pTest(res); |
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291 | return res; |
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292 | } |
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293 | |
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294 | poly singclap_gcd_r ( poly f, poly g, const ring r ) |
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295 | { |
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296 | // assume pCleardenom is done |
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297 | // assume f!=0, g!=0 |
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298 | poly res=NULL; |
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299 | |
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300 | if (p_IsConstantPoly(f,r) || p_IsConstantPoly(g,r)) |
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301 | { |
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302 | return pOne(); |
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303 | } |
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304 | |
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305 | // for now there is only the possibility to handle polynomials over |
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306 | // Q and Fp ... |
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307 | Off(SW_RATIONAL); |
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308 | if (rField_is_Q(r) || (rField_is_Zp(r))) |
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309 | { |
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310 | CanonicalForm newGCD(const CanonicalForm & A, const CanonicalForm & B); |
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311 | setCharacteristic( n_GetChar(r) ); |
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312 | CanonicalForm F( conv_SingPFactoryP( f,r ) ), G( conv_SingPFactoryP( g, r ) ); |
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313 | //if (nGetChar() > 1 ) |
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314 | //{ |
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315 | // res=convFactoryPSingP( newGCD( F,G )); |
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316 | // if (!nGreaterZero(pGetCoeff(res))) res=pNeg(res); |
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317 | //} |
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318 | //else |
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319 | res=conv_FactoryPSingP( gcd( F, G ) , r); |
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320 | } |
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321 | else |
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322 | WerrorS( feNotImplemented ); |
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323 | |
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324 | Off(SW_RATIONAL); |
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325 | pTest(res); |
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326 | return res; |
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327 | } |
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328 | |
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329 | /*2 find the maximal exponent of var(i) in poly p*/ |
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330 | int pGetExp_Var(poly p, int i) |
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331 | { |
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332 | int m=0; |
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333 | int mm; |
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334 | while (p!=NULL) |
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335 | { |
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336 | mm=pGetExp(p,i); |
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337 | if (mm>m) m=mm; |
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338 | pIter(p); |
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339 | } |
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340 | return m; |
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341 | } |
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342 | |
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343 | poly singclap_resultant ( poly f, poly g , poly x) |
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344 | { |
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345 | int i=pIsPurePower(x); |
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346 | if (i==0) |
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347 | { |
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348 | WerrorS("3rd argument must be a ring variable"); |
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349 | return NULL; |
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350 | } |
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351 | if ((f==NULL) || (g==NULL)) |
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352 | return NULL; |
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353 | // for now there is only the possibility to handle polynomials over |
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354 | // Q and Fp ... |
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355 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
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356 | && (currRing->parameter==NULL)) |
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357 | { |
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358 | Variable X(i); |
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359 | setCharacteristic( nGetChar() ); |
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360 | CanonicalForm F( convSingPFactoryP( f ) ), G( convSingPFactoryP( g ) ); |
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361 | poly res=convFactoryPSingP( resultant( F, G, X ) ); |
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362 | Off(SW_RATIONAL); |
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363 | return res; |
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364 | } |
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365 | // and over Q(a) / Fp(a) |
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366 | else if (( nGetChar()==1 ) /* Q(a) */ |
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367 | || (nGetChar() <-1)) /* Fp(a) */ |
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368 | { |
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369 | if (nGetChar()==1) setCharacteristic( 0 ); |
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370 | else setCharacteristic( -nGetChar() ); |
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371 | poly res; |
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372 | Variable X(i+rPar(currRing)); |
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373 | if (currRing->minpoly!=NULL) |
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374 | { |
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375 | //Variable X(i); |
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376 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
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377 | Variable a=rootOf(mipo); |
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378 | CanonicalForm F( convSingAPFactoryAP( f,a ) ), G( convSingAPFactoryAP( g,a ) ); |
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379 | res= convFactoryAPSingAP( resultant( F, G, X ) ); |
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380 | } |
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381 | else |
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382 | { |
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383 | //Variable X(i+rPar(currRing)); |
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384 | number nf,ng; |
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385 | pCleardenom_n(f,nf);pCleardenom_n(g,ng); |
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386 | int ef,eg; |
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387 | ef=pGetExp_Var(f,i); |
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388 | eg=pGetExp_Var(g,i); |
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389 | CanonicalForm F( convSingTrPFactoryP( f ) ), G( convSingTrPFactoryP( g ) ); |
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390 | res= convFactoryPSingTrP( resultant( F, G, X ) ); |
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391 | if ((nf!=NULL)&&(!nIsOne(nf))&&(!nIsZero(nf))) |
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392 | { |
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393 | number n=nInvers(nf); |
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394 | while(eg>0) |
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395 | { |
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396 | res=pMult_nn(res,n); |
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397 | eg--; |
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398 | } |
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399 | nDelete(&n); |
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400 | } |
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401 | nDelete(&nf); |
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402 | if ((ng!=NULL)&&(!nIsOne(ng))&&(!nIsZero(ng))) |
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403 | { |
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404 | number n=nInvers(ng); |
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405 | while(ef>0) |
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406 | { |
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407 | res=pMult_nn(res,n); |
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408 | ef--; |
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409 | } |
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410 | nDelete(&n); |
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411 | } |
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412 | nDelete(&ng); |
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413 | } |
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414 | Off(SW_RATIONAL); |
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415 | return res; |
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416 | } |
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417 | else |
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418 | WerrorS( feNotImplemented ); |
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419 | return NULL; |
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420 | } |
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421 | //poly singclap_resultant ( poly f, poly g , poly x) |
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422 | //{ |
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423 | // int i=pVar(x); |
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424 | // if (i==0) |
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425 | // { |
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426 | // WerrorS("ringvar expected"); |
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427 | // return NULL; |
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428 | // } |
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429 | // ideal I=idInit(1,1); |
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430 | // |
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431 | // // get the coeffs von f wrt. x: |
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432 | // I->m[0]=pCopy(f); |
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433 | // matrix ffi=mpCoeffs(I,i); |
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434 | // ffi->rank=1; |
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435 | // ffi->ncols=ffi->nrows; |
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436 | // ffi->nrows=1; |
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437 | // ideal fi=(ideal)ffi; |
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438 | // |
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439 | // // get the coeffs von g wrt. x: |
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440 | // I->m[0]=pCopy(g); |
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441 | // matrix ggi=mpCoeffs(I,i); |
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442 | // ggi->rank=1; |
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443 | // ggi->ncols=ggi->nrows; |
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444 | // ggi->nrows=1; |
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445 | // ideal gi=(ideal)ggi; |
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446 | // |
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447 | // // contruct the matrix: |
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448 | // int fn=IDELEMS(fi); //= deg(f,x)+1 |
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449 | // int gn=IDELEMS(gi); //= deg(g,x)+1 |
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450 | // matrix m=mpNew(fn+gn-2,fn+gn-2); |
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451 | // if(m==NULL) |
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452 | // { |
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453 | // return NULL; |
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454 | // } |
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455 | // |
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456 | // // enter the coeffs into m: |
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457 | // int j; |
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458 | // for(i=0;i<gn-1;i++) |
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459 | // { |
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460 | // for(j=0;j<fn;j++) |
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461 | // { |
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462 | // MATELEM(m,i+1,fn-j+i)=pCopy(fi->m[j]); |
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463 | // } |
---|
464 | // } |
---|
465 | // for(i=0;i<fn-1;i++) |
---|
466 | // { |
---|
467 | // for(j=0;j<gn;j++) |
---|
468 | // { |
---|
469 | // MATELEM(m,gn+i,gn-j+i)=pCopy(gi->m[j]); |
---|
470 | // } |
---|
471 | // } |
---|
472 | // |
---|
473 | // poly r=mpDet(m); |
---|
474 | // |
---|
475 | // idDelete(&fi); |
---|
476 | // idDelete(&gi); |
---|
477 | // idDelete((ideal *)&m); |
---|
478 | // return r; |
---|
479 | //} |
---|
480 | |
---|
481 | BOOLEAN singclap_extgcd ( poly f, poly g, poly &res, poly &pa, poly &pb ) |
---|
482 | { |
---|
483 | // for now there is only the possibility to handle univariate |
---|
484 | // polynomials over |
---|
485 | // Q and Fp ... |
---|
486 | res=NULL;pa=NULL;pb=NULL; |
---|
487 | On(SW_SYMMETRIC_FF); |
---|
488 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
---|
489 | && (currRing->parameter==NULL)) |
---|
490 | { |
---|
491 | setCharacteristic( nGetChar() ); |
---|
492 | CanonicalForm F( convSingPFactoryP( f ) ), G( convSingPFactoryP( g ) ); |
---|
493 | CanonicalForm FpG=F+G; |
---|
494 | if (!(FpG.isUnivariate()|| FpG.inCoeffDomain())) |
---|
495 | //if (!F.isUnivariate() || !G.isUnivariate() || F.mvar()!=G.mvar()) |
---|
496 | { |
---|
497 | Off(SW_RATIONAL); |
---|
498 | WerrorS("not univariate"); |
---|
499 | return TRUE; |
---|
500 | } |
---|
501 | CanonicalForm Fa,Gb; |
---|
502 | On(SW_RATIONAL); |
---|
503 | res=convFactoryPSingP( extgcd( F, G, Fa, Gb ) ); |
---|
504 | pa=convFactoryPSingP(Fa); |
---|
505 | pb=convFactoryPSingP(Gb); |
---|
506 | Off(SW_RATIONAL); |
---|
507 | } |
---|
508 | // and over Q(a) / Fp(a) |
---|
509 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
510 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
511 | { |
---|
512 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
513 | else setCharacteristic( -nGetChar() ); |
---|
514 | CanonicalForm Fa,Gb; |
---|
515 | if (currRing->minpoly!=NULL) |
---|
516 | { |
---|
517 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
518 | Variable a=rootOf(mipo); |
---|
519 | CanonicalForm F( convSingAPFactoryAP( f,a ) ), G( convSingAPFactoryAP( g,a ) ); |
---|
520 | CanonicalForm FpG=F+G; |
---|
521 | if (!(FpG.isUnivariate()|| FpG.inCoeffDomain())) |
---|
522 | //if (!F.isUnivariate() || !G.isUnivariate() || F.mvar()!=G.mvar()) |
---|
523 | { |
---|
524 | WerrorS("not univariate"); |
---|
525 | return TRUE; |
---|
526 | } |
---|
527 | res= convFactoryAPSingAP( extgcd( F, G, Fa, Gb ) ); |
---|
528 | pa=convFactoryAPSingAP(Fa); |
---|
529 | pb=convFactoryAPSingAP(Gb); |
---|
530 | } |
---|
531 | else |
---|
532 | { |
---|
533 | CanonicalForm F( convSingTrPFactoryP( f ) ), G( convSingTrPFactoryP( g ) ); |
---|
534 | CanonicalForm FpG=F+G; |
---|
535 | if (!(FpG.isUnivariate()|| FpG.inCoeffDomain())) |
---|
536 | //if (!F.isUnivariate() || !G.isUnivariate() || F.mvar()!=G.mvar()) |
---|
537 | { |
---|
538 | Off(SW_RATIONAL); |
---|
539 | WerrorS("not univariate"); |
---|
540 | return TRUE; |
---|
541 | } |
---|
542 | res= convFactoryPSingTrP( extgcd( F, G, Fa, Gb ) ); |
---|
543 | pa=convFactoryPSingTrP(Fa); |
---|
544 | pb=convFactoryPSingTrP(Gb); |
---|
545 | } |
---|
546 | Off(SW_RATIONAL); |
---|
547 | } |
---|
548 | else |
---|
549 | { |
---|
550 | WerrorS( feNotImplemented ); |
---|
551 | return TRUE; |
---|
552 | } |
---|
553 | return FALSE; |
---|
554 | } |
---|
555 | |
---|
556 | poly singclap_pdivide ( poly f, poly g ) |
---|
557 | { |
---|
558 | // for now there is only the possibility to handle polynomials over |
---|
559 | // Q and Fp ... |
---|
560 | poly res=NULL; |
---|
561 | On(SW_RATIONAL); |
---|
562 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
---|
563 | && (currRing->parameter==NULL)) |
---|
564 | { |
---|
565 | setCharacteristic( nGetChar() ); |
---|
566 | CanonicalForm F( convSingPFactoryP( f ) ), G( convSingPFactoryP( g ) ); |
---|
567 | res = convFactoryPSingP( F / G ); |
---|
568 | } |
---|
569 | // and over Q(a) / Fp(a) |
---|
570 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
571 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
572 | { |
---|
573 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
574 | else setCharacteristic( -nGetChar() ); |
---|
575 | if (currRing->minpoly!=NULL) |
---|
576 | { |
---|
577 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
578 | Variable a=rootOf(mipo); |
---|
579 | CanonicalForm F( convSingAPFactoryAP( f,a ) ), G( convSingAPFactoryAP( g,a ) ); |
---|
580 | res= convFactoryAPSingAP( F / G ); |
---|
581 | } |
---|
582 | else |
---|
583 | { |
---|
584 | CanonicalForm F( convSingTrPFactoryP( f ) ), G( convSingTrPFactoryP( g ) ); |
---|
585 | res= convFactoryPSingTrP( F / G ); |
---|
586 | } |
---|
587 | } |
---|
588 | #if 0 // not yet working |
---|
589 | else if (rField_is_GF()) |
---|
590 | { |
---|
591 | //Print("GF(%d^%d)\n",nfCharP,nfMinPoly[0]); |
---|
592 | setCharacteristic( nfCharP,nfMinPoly[0], currRing->parameter[0][0] ); |
---|
593 | CanonicalForm F( convSingGFFactoryGF( f ) ), G( convSingGFFactoryGF( g ) ); |
---|
594 | res = convFactoryGFSingGF( F / G ); |
---|
595 | } |
---|
596 | #endif |
---|
597 | else |
---|
598 | WerrorS( feNotImplemented ); |
---|
599 | Off(SW_RATIONAL); |
---|
600 | return res; |
---|
601 | } |
---|
602 | |
---|
603 | void singclap_divide_content ( poly f ) |
---|
604 | { |
---|
605 | if ( f==NULL ) |
---|
606 | { |
---|
607 | return; |
---|
608 | } |
---|
609 | else if ( pNext( f ) == NULL ) |
---|
610 | { |
---|
611 | pSetCoeff( f, nInit( 1 ) ); |
---|
612 | return; |
---|
613 | } |
---|
614 | else |
---|
615 | { |
---|
616 | if ( nGetChar() == 1 ) |
---|
617 | setCharacteristic( 0 ); |
---|
618 | else if ( nGetChar() == -1 ) |
---|
619 | return; /* not implemented for R */ |
---|
620 | else if ( nGetChar() < 0 ) |
---|
621 | setCharacteristic( -nGetChar() ); |
---|
622 | else if (currRing->parameter==NULL) /* not GF(q) */ |
---|
623 | setCharacteristic( nGetChar() ); |
---|
624 | else |
---|
625 | return; /* not implemented*/ |
---|
626 | |
---|
627 | CFList L; |
---|
628 | CanonicalForm g, h; |
---|
629 | poly p = pNext(f); |
---|
630 | |
---|
631 | // first attemp: find 2 smallest g: |
---|
632 | |
---|
633 | number g1=pGetCoeff(f); |
---|
634 | number g2=pGetCoeff(p); // p==pNext(f); |
---|
635 | pIter(p); |
---|
636 | int sz1=nSize(g1); |
---|
637 | int sz2=nSize(g2); |
---|
638 | if (sz1>sz2) |
---|
639 | { |
---|
640 | number gg=g1; |
---|
641 | g1=g2; g2=gg; |
---|
642 | int sz=sz1; |
---|
643 | sz1=sz2; sz2=sz; |
---|
644 | } |
---|
645 | while (p!=NULL) |
---|
646 | { |
---|
647 | int n_sz=nSize(pGetCoeff(p)); |
---|
648 | if (n_sz<sz1) |
---|
649 | { |
---|
650 | sz2=sz1; |
---|
651 | g2=g1; |
---|
652 | g1=pGetCoeff(p); |
---|
653 | sz1=n_sz; |
---|
654 | if (sz1<=3) break; |
---|
655 | } |
---|
656 | else if(n_sz<sz2) |
---|
657 | { |
---|
658 | sz2=n_sz; |
---|
659 | g2=pGetCoeff(p); |
---|
660 | sz2=n_sz; |
---|
661 | } |
---|
662 | pIter(p); |
---|
663 | } |
---|
664 | FACTORY_ALGOUT( "G", ((lnumber)g1)->z ); |
---|
665 | g = convSingTrFactoryP( ((lnumber)g1)->z ); |
---|
666 | g = gcd( g, convSingTrFactoryP( ((lnumber)g2)->z )); |
---|
667 | |
---|
668 | // second run: gcd's |
---|
669 | |
---|
670 | p = f; |
---|
671 | TIMING_START( contentTimer ); |
---|
672 | while ( (p != NULL) && (g != 1) && ( g != 0)) |
---|
673 | { |
---|
674 | FACTORY_ALGOUT( "h", (((lnumber)pGetCoeff(p))->z) ); |
---|
675 | h = convSingTrFactoryP( ((lnumber)pGetCoeff(p))->z ); |
---|
676 | pIter( p ); |
---|
677 | #ifdef FACTORY_GCD_STAT |
---|
678 | // save g |
---|
679 | CanonicalForm gOld = g; |
---|
680 | #endif |
---|
681 | |
---|
682 | #ifdef FACTORY_GCD_TEST |
---|
683 | g = CFPrimitiveGcdUtil::gcd( g, h ); |
---|
684 | #else |
---|
685 | g = gcd( g, h ); |
---|
686 | #endif |
---|
687 | |
---|
688 | FACTORY_GCDSTAT( "gcnt:", gOld, h, g ); |
---|
689 | FACTORY_CFTROUT( "g", g ); |
---|
690 | L.append( h ); |
---|
691 | } |
---|
692 | TIMING_END( contentTimer ); |
---|
693 | FACTORY_CONTSTAT( "cont:", g ); |
---|
694 | if (( g == 1 ) || (g == 0)) |
---|
695 | { |
---|
696 | // pTest(f); |
---|
697 | return; |
---|
698 | } |
---|
699 | else |
---|
700 | { |
---|
701 | CFListIterator i; |
---|
702 | for ( i = L, p = f; i.hasItem(); i++, p=pNext(p) ) |
---|
703 | { |
---|
704 | lnumber c=(lnumber)pGetCoeff(p); |
---|
705 | napDelete(&c->z); |
---|
706 | c->z=convFactoryPSingTr( i.getItem() / g ); |
---|
707 | //nTest((number)c); |
---|
708 | //#ifdef LDEBUG |
---|
709 | //number cn=(number)c; |
---|
710 | //StringSetS(""); nWrite(nt); StringAppend(" ==> "); |
---|
711 | //nWrite(cn);PrintS(StringAppend("\n")); |
---|
712 | //#endif |
---|
713 | } |
---|
714 | } |
---|
715 | // pTest(f); |
---|
716 | } |
---|
717 | } |
---|
718 | |
---|
719 | static int primepower(int c) |
---|
720 | { |
---|
721 | int p=1; |
---|
722 | int cc=c; |
---|
723 | while(cc!= rInternalChar(currRing)) { cc*=c; p++; } |
---|
724 | return p; |
---|
725 | } |
---|
726 | |
---|
727 | BOOLEAN count_Factors(ideal I, intvec *v,int j, poly &f, poly fac) |
---|
728 | { |
---|
729 | pTest(f); |
---|
730 | pTest(fac); |
---|
731 | int e=0; |
---|
732 | if (!pIsConstantPoly(fac)) |
---|
733 | { |
---|
734 | #ifdef FACTORIZE2_DEBUG |
---|
735 | printf("start count_Factors(%d), Fdeg=%d, factor deg=%d\n",j,pTotaldegree(f),pTotaldegree(fac)); |
---|
736 | p_wrp(fac,currRing);PrintLn(); |
---|
737 | #endif |
---|
738 | On(SW_RATIONAL); |
---|
739 | CanonicalForm F, FAC,Q,R; |
---|
740 | Variable a; |
---|
741 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
---|
742 | && (currRing->parameter==NULL)) |
---|
743 | { |
---|
744 | F=convSingPFactoryP( f ); |
---|
745 | FAC=convSingPFactoryP( fac ); |
---|
746 | } |
---|
747 | // and over Q(a) / Fp(a) |
---|
748 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
749 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
750 | { |
---|
751 | if (currRing->minpoly!=NULL) |
---|
752 | { |
---|
753 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
754 | a=rootOf(mipo); |
---|
755 | F=convSingAPFactoryAP( f,a ); |
---|
756 | FAC=convSingAPFactoryAP( fac,a ); |
---|
757 | } |
---|
758 | else |
---|
759 | { |
---|
760 | F=convSingTrPFactoryP( f ); |
---|
761 | FAC=convSingTrPFactoryP( fac ); |
---|
762 | } |
---|
763 | } |
---|
764 | else |
---|
765 | WerrorS( feNotImplemented ); |
---|
766 | |
---|
767 | poly q; |
---|
768 | loop |
---|
769 | { |
---|
770 | Q=F; |
---|
771 | Q/=FAC; |
---|
772 | R=Q; |
---|
773 | R*=FAC; |
---|
774 | R-=F; |
---|
775 | if (R.isZero()) |
---|
776 | { |
---|
777 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
---|
778 | && (currRing->parameter==NULL)) |
---|
779 | { |
---|
780 | q = convFactoryPSingP( Q ); |
---|
781 | } |
---|
782 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
783 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
784 | { |
---|
785 | if (currRing->minpoly!=NULL) |
---|
786 | { |
---|
787 | q= convFactoryAPSingAP( Q ); |
---|
788 | } |
---|
789 | else |
---|
790 | { |
---|
791 | q= convFactoryPSingTrP( Q ); |
---|
792 | } |
---|
793 | } |
---|
794 | e++; pDelete(&f); f=q; q=NULL; F=Q; |
---|
795 | } |
---|
796 | else |
---|
797 | { |
---|
798 | break; |
---|
799 | } |
---|
800 | } |
---|
801 | if (e==0) |
---|
802 | { |
---|
803 | Off(SW_RATIONAL); |
---|
804 | return FALSE; |
---|
805 | } |
---|
806 | } |
---|
807 | else e=1; |
---|
808 | I->m[j]=fac; |
---|
809 | if (v!=NULL) (*v)[j]=e; |
---|
810 | Off(SW_RATIONAL); |
---|
811 | return TRUE; |
---|
812 | } |
---|
813 | |
---|
814 | int singclap_factorize_retry; |
---|
815 | extern int libfac_interruptflag; |
---|
816 | |
---|
817 | ideal singclap_factorize ( poly f, intvec ** v , int with_exps) |
---|
818 | { |
---|
819 | pTest(f); |
---|
820 | #ifdef FACTORIZE2_DEBUG |
---|
821 | printf("singclap_factorize, degree %d\n",pTotaldegree(f)); |
---|
822 | #endif |
---|
823 | // with_exps: 3,1 return only true factors, no exponents |
---|
824 | // 2 return true factors and exponents |
---|
825 | // 0 return coeff, factors and exponents |
---|
826 | BOOLEAN save_errorreported=errorreported; |
---|
827 | |
---|
828 | ideal res=NULL; |
---|
829 | |
---|
830 | // handle factorize(0) ========================================= |
---|
831 | if (f==NULL) |
---|
832 | { |
---|
833 | res=idInit(1,1); |
---|
834 | if (with_exps!=1) |
---|
835 | { |
---|
836 | (*v)=new intvec(1); |
---|
837 | (**v)[0]=1; |
---|
838 | } |
---|
839 | return res; |
---|
840 | } |
---|
841 | // handle factorize(mon) ========================================= |
---|
842 | if (pNext(f)==NULL) |
---|
843 | { |
---|
844 | int i=0; |
---|
845 | int n=0; |
---|
846 | int e; |
---|
847 | for(i=pVariables;i>0;i--) if(pGetExp(f,i)!=0) n++; |
---|
848 | if (with_exps==0) n++; // with coeff |
---|
849 | res=idInit(si_max(n,1),1); |
---|
850 | switch(with_exps) |
---|
851 | { |
---|
852 | case 0: // with coef & exp. |
---|
853 | res->m[0]=pOne(); |
---|
854 | pSetCoeff(res->m[0],nCopy(pGetCoeff(f))); |
---|
855 | // no break |
---|
856 | case 2: // with exp. |
---|
857 | (*v)=new intvec(si_max(1,n)); |
---|
858 | (**v)[0]=1; |
---|
859 | // no break |
---|
860 | case 1: ; |
---|
861 | #ifdef TEST |
---|
862 | default: ; |
---|
863 | #endif |
---|
864 | } |
---|
865 | if (n==0) |
---|
866 | { |
---|
867 | res->m[0]=pOne(); |
---|
868 | // (**v)[0]=1; is already done |
---|
869 | return res; |
---|
870 | } |
---|
871 | for(i=pVariables;i>0;i--) |
---|
872 | { |
---|
873 | e=pGetExp(f,i); |
---|
874 | if(e!=0) |
---|
875 | { |
---|
876 | n--; |
---|
877 | poly p=pOne(); |
---|
878 | pSetExp(p,i,1); |
---|
879 | pSetm(p); |
---|
880 | res->m[n]=p; |
---|
881 | if (with_exps!=1) (**v)[n]=e; |
---|
882 | } |
---|
883 | } |
---|
884 | return res; |
---|
885 | } |
---|
886 | //PrintS("S:");pWrite(f);PrintLn(); |
---|
887 | // use factory/libfac in general ============================== |
---|
888 | Off(SW_RATIONAL); |
---|
889 | On(SW_SYMMETRIC_FF); |
---|
890 | #ifdef HAVE_NTL |
---|
891 | extern int prime_number; |
---|
892 | if(rField_is_Q()) prime_number=0; |
---|
893 | #endif |
---|
894 | CFFList L; |
---|
895 | number N=NULL; |
---|
896 | number NN=NULL; |
---|
897 | number old_lead_coeff=nCopy(pGetCoeff(f)); |
---|
898 | |
---|
899 | if (!rField_is_Zp() && !rField_is_Zp_a()) /* Q, Q(a) */ |
---|
900 | { |
---|
901 | //if (f!=NULL) // already tested at start of routine |
---|
902 | { |
---|
903 | number n0=nCopy(pGetCoeff(f)); |
---|
904 | if (with_exps==0) |
---|
905 | N=nCopy(n0); |
---|
906 | pCleardenom(f); |
---|
907 | NN=nDiv(n0,pGetCoeff(f)); |
---|
908 | nDelete(&n0); |
---|
909 | if (with_exps==0) |
---|
910 | { |
---|
911 | nDelete(&N); |
---|
912 | N=nCopy(NN); |
---|
913 | } |
---|
914 | } |
---|
915 | } |
---|
916 | else if (rField_is_Zp_a()) |
---|
917 | { |
---|
918 | //if (f!=NULL) // already tested at start of routine |
---|
919 | if (singclap_factorize_retry==0) |
---|
920 | { |
---|
921 | number n0=nCopy(pGetCoeff(f)); |
---|
922 | if (with_exps==0) |
---|
923 | N=nCopy(n0); |
---|
924 | pNorm(f); |
---|
925 | pCleardenom(f); |
---|
926 | NN=nDiv(n0,pGetCoeff(f)); |
---|
927 | nDelete(&n0); |
---|
928 | if (with_exps==0) |
---|
929 | { |
---|
930 | nDelete(&N); |
---|
931 | N=nCopy(NN); |
---|
932 | } |
---|
933 | } |
---|
934 | } |
---|
935 | if (rField_is_Q() || rField_is_Zp()) |
---|
936 | { |
---|
937 | setCharacteristic( nGetChar() ); |
---|
938 | CanonicalForm F( convSingPFactoryP( f ) ); |
---|
939 | if (nGetChar()==0) /* Q */ |
---|
940 | { |
---|
941 | L = factorize( F ); |
---|
942 | } |
---|
943 | else /* Fp */ |
---|
944 | { |
---|
945 | do |
---|
946 | { |
---|
947 | libfac_interruptflag=0; |
---|
948 | L = Factorize( F ); |
---|
949 | } |
---|
950 | while ((libfac_interruptflag!=0) ||(L.isEmpty())); |
---|
951 | } |
---|
952 | } |
---|
953 | #if 0 |
---|
954 | else if (rField_is_GF()) |
---|
955 | { |
---|
956 | int c=rChar(currRing); |
---|
957 | setCharacteristic( c, primepower(c) ); |
---|
958 | CanonicalForm F( convSingGFFactoryGF( f ) ); |
---|
959 | if (F.isUnivariate()) |
---|
960 | { |
---|
961 | L = factorize( F ); |
---|
962 | } |
---|
963 | else |
---|
964 | { |
---|
965 | goto notImpl; |
---|
966 | } |
---|
967 | } |
---|
968 | #endif |
---|
969 | // and over Q(a) / Fp(a) |
---|
970 | else if (rField_is_Extension()) |
---|
971 | { |
---|
972 | if (rField_is_Q_a()) setCharacteristic( 0 ); |
---|
973 | else setCharacteristic( -nGetChar() ); |
---|
974 | if (currRing->minpoly!=NULL) |
---|
975 | { |
---|
976 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
977 | Variable a=rootOf(mipo); |
---|
978 | CanonicalForm F( convSingAPFactoryAP( f,a ) ); |
---|
979 | if (rField_is_Zp_a() && F.isUnivariate()) |
---|
980 | { |
---|
981 | L = factorize( F, a ); |
---|
982 | } |
---|
983 | else |
---|
984 | { |
---|
985 | CanonicalForm G( convSingTrPFactoryP( f ) ); |
---|
986 | // over Q(a) / multivariate over Fp(a) |
---|
987 | do |
---|
988 | { |
---|
989 | libfac_interruptflag=0; |
---|
990 | L=Factorize2(G, mipo); |
---|
991 | } |
---|
992 | while ((libfac_interruptflag!=0) ||(L.isEmpty())); |
---|
993 | #ifdef FACTORIZE2_DEBUG |
---|
994 | printf("while okay\n"); |
---|
995 | #endif |
---|
996 | libfac_interruptflag=0; |
---|
997 | } |
---|
998 | } |
---|
999 | else |
---|
1000 | { |
---|
1001 | CanonicalForm F( convSingTrPFactoryP( f ) ); |
---|
1002 | if (rField_is_Q_a()) |
---|
1003 | { |
---|
1004 | L = factorize( F ); |
---|
1005 | } |
---|
1006 | else /* Fp(a) */ |
---|
1007 | { |
---|
1008 | L = Factorize( F ); |
---|
1009 | } |
---|
1010 | } |
---|
1011 | } |
---|
1012 | else |
---|
1013 | { |
---|
1014 | goto notImpl; |
---|
1015 | } |
---|
1016 | { |
---|
1017 | poly ff=pCopy(f); // a copy for the retry stuff |
---|
1018 | // the first factor should be a constant |
---|
1019 | if ( ! L.getFirst().factor().inCoeffDomain() ) |
---|
1020 | L.insert(CFFactor(1,1)); |
---|
1021 | // convert into ideal |
---|
1022 | int n = L.length(); |
---|
1023 | if (n==0) n=1; |
---|
1024 | CFFListIterator J=L; |
---|
1025 | int j=0; |
---|
1026 | if (with_exps!=1) |
---|
1027 | { |
---|
1028 | if ((with_exps==2)&&(n>1)) |
---|
1029 | { |
---|
1030 | n--; |
---|
1031 | J++; |
---|
1032 | } |
---|
1033 | *v = new intvec( n ); |
---|
1034 | } |
---|
1035 | res = idInit( n ,1); |
---|
1036 | for ( ; J.hasItem(); J++, j++ ) |
---|
1037 | { |
---|
1038 | poly p; |
---|
1039 | if (with_exps!=1) (**v)[j] = J.getItem().exp(); |
---|
1040 | if (rField_is_Zp() || rField_is_Q()) /* Q, Fp */ |
---|
1041 | { |
---|
1042 | //count_Factors(res,*v,f, j, convFactoryPSingP( J.getItem().factor() ); |
---|
1043 | res->m[j] = convFactoryPSingP( J.getItem().factor() ); |
---|
1044 | } |
---|
1045 | #if 0 |
---|
1046 | else if (rField_is_GF()) |
---|
1047 | res->m[j] = convFactoryGFSingGF( J.getItem().factor() ); |
---|
1048 | #endif |
---|
1049 | else if (rField_is_Extension()) /* Q(a), Fp(a) */ |
---|
1050 | { |
---|
1051 | intvec *w=NULL; |
---|
1052 | if (v!=NULL) w=*v; |
---|
1053 | if (currRing->minpoly==NULL) |
---|
1054 | { |
---|
1055 | if(!count_Factors(res,w,j,ff,convFactoryPSingTrP( J.getItem().factor() ))) |
---|
1056 | { |
---|
1057 | if (w!=NULL) |
---|
1058 | (*w)[j]=1; |
---|
1059 | res->m[j]=pOne(); |
---|
1060 | } |
---|
1061 | } |
---|
1062 | else |
---|
1063 | { |
---|
1064 | if (!count_Factors(res,w,j,ff,convFactoryAPSingAP( J.getItem().factor() ))) |
---|
1065 | { |
---|
1066 | if (w!=NULL) |
---|
1067 | (*w)[j]=1; |
---|
1068 | res->m[j]=pOne(); |
---|
1069 | } |
---|
1070 | } |
---|
1071 | } |
---|
1072 | } |
---|
1073 | if (rField_is_Extension() && (!pIsConstantPoly(ff))) |
---|
1074 | { |
---|
1075 | singclap_factorize_retry++; |
---|
1076 | if (singclap_factorize_retry<3) |
---|
1077 | { |
---|
1078 | int jj; |
---|
1079 | #ifdef FACTORIZE2_DEBUG |
---|
1080 | printf("factorize_retry\n"); |
---|
1081 | #endif |
---|
1082 | intvec *ww=NULL; |
---|
1083 | idTest(res); |
---|
1084 | ideal h=singclap_factorize ( ff, &ww , with_exps); |
---|
1085 | idTest(h); |
---|
1086 | int l=(*v)->length(); |
---|
1087 | (*v)->resize(l+ww->length()); |
---|
1088 | for(jj=0;jj<ww->length();jj++) |
---|
1089 | (**v)[jj+l]=(*ww)[jj]; |
---|
1090 | delete ww; |
---|
1091 | ideal hh=idInit(IDELEMS(res)+IDELEMS(h),1); |
---|
1092 | for(jj=IDELEMS(res)-1;jj>=0;jj--) |
---|
1093 | { |
---|
1094 | hh->m[jj]=res->m[jj]; |
---|
1095 | res->m[jj]=NULL; |
---|
1096 | } |
---|
1097 | for(jj=IDELEMS(h)-1;jj>=0;jj--) |
---|
1098 | { |
---|
1099 | hh->m[jj+IDELEMS(res)]=h->m[jj]; |
---|
1100 | h->m[jj]=NULL; |
---|
1101 | } |
---|
1102 | idDelete(&res); |
---|
1103 | idDelete(&h); |
---|
1104 | res=hh; |
---|
1105 | idTest(res); |
---|
1106 | ff=NULL; |
---|
1107 | } |
---|
1108 | else |
---|
1109 | { |
---|
1110 | WarnS("problem with factorize"); |
---|
1111 | #if 0 |
---|
1112 | pWrite(ff); |
---|
1113 | idShow(res); |
---|
1114 | #endif |
---|
1115 | idDelete(&res); |
---|
1116 | res=idInit(2,1); |
---|
1117 | res->m[0]=pOne(); |
---|
1118 | res->m[1]=ff; ff=NULL; |
---|
1119 | } |
---|
1120 | } |
---|
1121 | pDelete(&ff); |
---|
1122 | if (N!=NULL) |
---|
1123 | { |
---|
1124 | pMult_nn(res->m[0],N); |
---|
1125 | nDelete(&N); |
---|
1126 | N=NULL; |
---|
1127 | } |
---|
1128 | // delete constants |
---|
1129 | if (res!=NULL) |
---|
1130 | { |
---|
1131 | int i=IDELEMS(res)-1; |
---|
1132 | int j=0; |
---|
1133 | for(;i>=0;i--) |
---|
1134 | { |
---|
1135 | if ((res->m[i]!=NULL) |
---|
1136 | && (pNext(res->m[i])==NULL) |
---|
1137 | && (pIsConstant(res->m[i]))) |
---|
1138 | { |
---|
1139 | if (with_exps!=0) |
---|
1140 | { |
---|
1141 | pDelete(&(res->m[i])); |
---|
1142 | if ((v!=NULL) && ((*v)!=NULL)) |
---|
1143 | (**v)[i]=0; |
---|
1144 | j++; |
---|
1145 | } |
---|
1146 | else if (i!=0) |
---|
1147 | { |
---|
1148 | while ((v!=NULL) && ((*v)!=NULL) && ((**v)[i]>1)) |
---|
1149 | { |
---|
1150 | res->m[0]=pMult(res->m[0],pCopy(res->m[i])); |
---|
1151 | (**v)[i]--; |
---|
1152 | } |
---|
1153 | res->m[0]=pMult(res->m[0],res->m[i]); |
---|
1154 | res->m[i]=NULL; |
---|
1155 | if ((v!=NULL) && ((*v)!=NULL)) |
---|
1156 | (**v)[i]=1; |
---|
1157 | j++; |
---|
1158 | } |
---|
1159 | } |
---|
1160 | } |
---|
1161 | if (j>0) |
---|
1162 | { |
---|
1163 | idSkipZeroes(res); |
---|
1164 | if ((v!=NULL) && ((*v)!=NULL)) |
---|
1165 | { |
---|
1166 | intvec *w=*v; |
---|
1167 | int len=IDELEMS(res); |
---|
1168 | *v = new intvec( len ); |
---|
1169 | for (i=0,j=0;i<si_min(w->length(),len);i++) |
---|
1170 | { |
---|
1171 | if((*w)[i]!=0) |
---|
1172 | { |
---|
1173 | (**v)[j]=(*w)[i]; j++; |
---|
1174 | } |
---|
1175 | } |
---|
1176 | delete w; |
---|
1177 | } |
---|
1178 | } |
---|
1179 | if (res->m[0]==NULL) |
---|
1180 | { |
---|
1181 | res->m[0]=pOne(); |
---|
1182 | } |
---|
1183 | } |
---|
1184 | } |
---|
1185 | if (rField_is_Q_a() && (currRing->minpoly!=NULL)) |
---|
1186 | { |
---|
1187 | int i=IDELEMS(res)-1; |
---|
1188 | int stop=1; |
---|
1189 | if (with_exps!=0) stop=0; |
---|
1190 | for(;i>=stop;i--) |
---|
1191 | { |
---|
1192 | pNorm(res->m[i]); |
---|
1193 | } |
---|
1194 | if (with_exps==0) pSetCoeff(res->m[0],old_lead_coeff); |
---|
1195 | else nDelete(&old_lead_coeff); |
---|
1196 | } |
---|
1197 | else |
---|
1198 | nDelete(&old_lead_coeff); |
---|
1199 | errorreported=save_errorreported; |
---|
1200 | notImpl: |
---|
1201 | if (res==NULL) |
---|
1202 | WerrorS( feNotImplemented ); |
---|
1203 | if (NN!=NULL) |
---|
1204 | { |
---|
1205 | nDelete(&NN); |
---|
1206 | } |
---|
1207 | if (N!=NULL) |
---|
1208 | { |
---|
1209 | nDelete(&N); |
---|
1210 | } |
---|
1211 | //if (f!=NULL) pDelete(&f); |
---|
1212 | //PrintS("......S\n"); |
---|
1213 | return res; |
---|
1214 | } |
---|
1215 | ideal singclap_sqrfree ( poly f) |
---|
1216 | { |
---|
1217 | pTest(f); |
---|
1218 | #ifdef FACTORIZE2_DEBUG |
---|
1219 | printf("singclap_sqrfree, degree %d\n",pTotaldegree(f)); |
---|
1220 | #endif |
---|
1221 | // with_exps: 3,1 return only true factors, no exponents |
---|
1222 | // 2 return true factors and exponents |
---|
1223 | // 0 return coeff, factors and exponents |
---|
1224 | BOOLEAN save_errorreported=errorreported; |
---|
1225 | |
---|
1226 | ideal res=NULL; |
---|
1227 | |
---|
1228 | // handle factorize(0) ========================================= |
---|
1229 | if (f==NULL) |
---|
1230 | { |
---|
1231 | res=idInit(1,1); |
---|
1232 | return res; |
---|
1233 | } |
---|
1234 | // handle factorize(mon) ========================================= |
---|
1235 | if (pNext(f)==NULL) |
---|
1236 | { |
---|
1237 | int i=0; |
---|
1238 | int n=0; |
---|
1239 | int e; |
---|
1240 | for(i=pVariables;i>0;i--) if(pGetExp(f,i)!=0) n++; |
---|
1241 | n++; // with coeff |
---|
1242 | res=idInit(si_max(n,1),1); |
---|
1243 | res->m[0]=pOne(); |
---|
1244 | pSetCoeff(res->m[0],nCopy(pGetCoeff(f))); |
---|
1245 | if (n==0) |
---|
1246 | { |
---|
1247 | res->m[0]=pOne(); |
---|
1248 | // (**v)[0]=1; is already done |
---|
1249 | return res; |
---|
1250 | } |
---|
1251 | for(i=pVariables;i>0;i--) |
---|
1252 | { |
---|
1253 | e=pGetExp(f,i); |
---|
1254 | if(e!=0) |
---|
1255 | { |
---|
1256 | n--; |
---|
1257 | poly p=pOne(); |
---|
1258 | pSetExp(p,i,1); |
---|
1259 | pSetm(p); |
---|
1260 | res->m[n]=p; |
---|
1261 | } |
---|
1262 | } |
---|
1263 | return res; |
---|
1264 | } |
---|
1265 | //PrintS("S:");pWrite(f);PrintLn(); |
---|
1266 | // use factory/libfac in general ============================== |
---|
1267 | Off(SW_RATIONAL); |
---|
1268 | On(SW_SYMMETRIC_FF); |
---|
1269 | #ifdef HAVE_NTL |
---|
1270 | extern int prime_number; |
---|
1271 | if(rField_is_Q()) prime_number=0; |
---|
1272 | #endif |
---|
1273 | CFFList L; |
---|
1274 | |
---|
1275 | if (!rField_is_Zp() && !rField_is_Zp_a()) /* Q, Q(a) */ |
---|
1276 | { |
---|
1277 | //if (f!=NULL) // already tested at start of routine |
---|
1278 | { |
---|
1279 | pCleardenom(f); |
---|
1280 | } |
---|
1281 | } |
---|
1282 | else if (rField_is_Zp_a()) |
---|
1283 | { |
---|
1284 | //if (f!=NULL) // already tested at start of routine |
---|
1285 | if (singclap_factorize_retry==0) |
---|
1286 | { |
---|
1287 | pNorm(f); |
---|
1288 | pCleardenom(f); |
---|
1289 | } |
---|
1290 | } |
---|
1291 | if (rField_is_Q() || rField_is_Zp()) |
---|
1292 | { |
---|
1293 | setCharacteristic( nGetChar() ); |
---|
1294 | CanonicalForm F( convSingPFactoryP( f ) ); |
---|
1295 | L = sqrFree( F ); |
---|
1296 | } |
---|
1297 | #if 0 |
---|
1298 | else if (rField_is_GF()) |
---|
1299 | { |
---|
1300 | int c=rChar(currRing); |
---|
1301 | setCharacteristic( c, primepower(c) ); |
---|
1302 | CanonicalForm F( convSingGFFactoryGF( f ) ); |
---|
1303 | if (F.isUnivariate()) |
---|
1304 | { |
---|
1305 | L = factorize( F ); |
---|
1306 | } |
---|
1307 | else |
---|
1308 | { |
---|
1309 | goto notImpl; |
---|
1310 | } |
---|
1311 | } |
---|
1312 | #endif |
---|
1313 | // and over Q(a) / Fp(a) |
---|
1314 | else if (rField_is_Extension()) |
---|
1315 | { |
---|
1316 | if (rField_is_Q_a()) setCharacteristic( 0 ); |
---|
1317 | else setCharacteristic( -nGetChar() ); |
---|
1318 | if (currRing->minpoly!=NULL) |
---|
1319 | { |
---|
1320 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
1321 | Variable a=rootOf(mipo); |
---|
1322 | CanonicalForm F( convSingAPFactoryAP( f,a ) ); |
---|
1323 | CFFList SqrFreeMV( const CanonicalForm & f , const CanonicalForm & mipo=0) ; |
---|
1324 | |
---|
1325 | L = SqrFreeMV( F,mipo ); |
---|
1326 | //WarnS("L = sqrFree( F,mipo );"); |
---|
1327 | //L = sqrFree( F ); |
---|
1328 | } |
---|
1329 | else |
---|
1330 | { |
---|
1331 | CanonicalForm F( convSingTrPFactoryP( f ) ); |
---|
1332 | L = sqrFree( F ); |
---|
1333 | } |
---|
1334 | } |
---|
1335 | else |
---|
1336 | { |
---|
1337 | goto notImpl; |
---|
1338 | } |
---|
1339 | { |
---|
1340 | poly ff=pCopy(f); // a copy for the retry stuff |
---|
1341 | // convert into ideal |
---|
1342 | int n = L.length(); |
---|
1343 | if (n==0) n=1; |
---|
1344 | CFFListIterator J=L; |
---|
1345 | int j=0; |
---|
1346 | res = idInit( n ,1); |
---|
1347 | for ( ; J.hasItem(); J++, j++ ) |
---|
1348 | { |
---|
1349 | poly p; |
---|
1350 | if (rField_is_Zp() || rField_is_Q()) /* Q, Fp */ |
---|
1351 | //count_Factors(res,*v,f, j, convFactoryPSingP( J.getItem().factor() ); |
---|
1352 | res->m[j] = convFactoryPSingP( J.getItem().factor() ); |
---|
1353 | #if 0 |
---|
1354 | else if (rField_is_GF()) |
---|
1355 | res->m[j] = convFactoryGFSingGF( J.getItem().factor() ); |
---|
1356 | #endif |
---|
1357 | else if (rField_is_Extension()) /* Q(a), Fp(a) */ |
---|
1358 | { |
---|
1359 | if (currRing->minpoly==NULL) |
---|
1360 | res->m[j]=convFactoryPSingTrP( J.getItem().factor() ); |
---|
1361 | else |
---|
1362 | res->m[j]=convFactoryAPSingAP( J.getItem().factor() ); |
---|
1363 | } |
---|
1364 | } |
---|
1365 | if (res->m[0]==NULL) |
---|
1366 | { |
---|
1367 | res->m[0]=pOne(); |
---|
1368 | } |
---|
1369 | } |
---|
1370 | errorreported=save_errorreported; |
---|
1371 | notImpl: |
---|
1372 | if (res==NULL) |
---|
1373 | WerrorS( feNotImplemented ); |
---|
1374 | return res; |
---|
1375 | } |
---|
1376 | matrix singclap_irrCharSeries ( ideal I) |
---|
1377 | { |
---|
1378 | if (idIs0(I)) return mpNew(1,1); |
---|
1379 | |
---|
1380 | // for now there is only the possibility to handle polynomials over |
---|
1381 | // Q and Fp ... |
---|
1382 | matrix res=NULL; |
---|
1383 | int i; |
---|
1384 | Off(SW_RATIONAL); |
---|
1385 | On(SW_SYMMETRIC_FF); |
---|
1386 | CFList L; |
---|
1387 | ListCFList LL; |
---|
1388 | if (((nGetChar() == 0) || (nGetChar() > 1) ) |
---|
1389 | && (currRing->parameter==NULL)) |
---|
1390 | { |
---|
1391 | setCharacteristic( nGetChar() ); |
---|
1392 | for(i=0;i<IDELEMS(I);i++) |
---|
1393 | { |
---|
1394 | poly p=I->m[i]; |
---|
1395 | if (p!=NULL) |
---|
1396 | { |
---|
1397 | p=pCopy(p); |
---|
1398 | pCleardenom(p); |
---|
1399 | L.append(convSingPFactoryP(p)); |
---|
1400 | } |
---|
1401 | } |
---|
1402 | } |
---|
1403 | // and over Q(a) / Fp(a) |
---|
1404 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
1405 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
1406 | { |
---|
1407 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
1408 | else setCharacteristic( -nGetChar() ); |
---|
1409 | for(i=0;i<IDELEMS(I);i++) |
---|
1410 | { |
---|
1411 | poly p=I->m[i]; |
---|
1412 | if (p!=NULL) |
---|
1413 | { |
---|
1414 | p=pCopy(p); |
---|
1415 | pCleardenom(p); |
---|
1416 | L.append(convSingTrPFactoryP(p)); |
---|
1417 | } |
---|
1418 | } |
---|
1419 | } |
---|
1420 | else |
---|
1421 | { |
---|
1422 | WerrorS( feNotImplemented ); |
---|
1423 | return res; |
---|
1424 | } |
---|
1425 | |
---|
1426 | // a very bad work-around --- FIX IT in libfac |
---|
1427 | // should be fixed as of 2001/6/27 |
---|
1428 | int tries=0; |
---|
1429 | int m,n; |
---|
1430 | ListIterator<CFList> LLi; |
---|
1431 | loop |
---|
1432 | { |
---|
1433 | LL=IrrCharSeries(L); |
---|
1434 | m= LL.length(); // Anzahl Zeilen |
---|
1435 | n=0; |
---|
1436 | for ( LLi = LL; LLi.hasItem(); LLi++ ) |
---|
1437 | { |
---|
1438 | n = si_max(LLi.getItem().length(),n); |
---|
1439 | } |
---|
1440 | if ((m!=0) && (n!=0)) break; |
---|
1441 | tries++; |
---|
1442 | if (tries>=5) break; |
---|
1443 | } |
---|
1444 | if ((m==0) || (n==0)) |
---|
1445 | { |
---|
1446 | Warn("char_series returns %d x %d matrix from %d input polys (%d)", |
---|
1447 | m,n,IDELEMS(I)+1,LL.length()); |
---|
1448 | iiWriteMatrix((matrix)I,"I",2,0); |
---|
1449 | m=si_max(m,1); |
---|
1450 | n=si_max(n,1); |
---|
1451 | } |
---|
1452 | res=mpNew(m,n); |
---|
1453 | CFListIterator Li; |
---|
1454 | for ( m=1, LLi = LL; LLi.hasItem(); LLi++, m++ ) |
---|
1455 | { |
---|
1456 | for (n=1, Li = LLi.getItem(); Li.hasItem(); Li++, n++) |
---|
1457 | { |
---|
1458 | if ( (nGetChar() == 0) || (nGetChar() > 1) ) |
---|
1459 | MATELEM(res,m,n)=convFactoryPSingP(Li.getItem()); |
---|
1460 | else |
---|
1461 | MATELEM(res,m,n)=convFactoryPSingTrP(Li.getItem()); |
---|
1462 | } |
---|
1463 | } |
---|
1464 | Off(SW_RATIONAL); |
---|
1465 | return res; |
---|
1466 | } |
---|
1467 | |
---|
1468 | char* singclap_neworder ( ideal I) |
---|
1469 | { |
---|
1470 | int i; |
---|
1471 | Off(SW_RATIONAL); |
---|
1472 | On(SW_SYMMETRIC_FF); |
---|
1473 | CFList L; |
---|
1474 | if (((nGetChar() == 0) || (nGetChar() > 1) ) |
---|
1475 | && (currRing->parameter==NULL)) |
---|
1476 | { |
---|
1477 | setCharacteristic( nGetChar() ); |
---|
1478 | for(i=0;i<IDELEMS(I);i++) |
---|
1479 | { |
---|
1480 | L.append(convSingPFactoryP(I->m[i])); |
---|
1481 | } |
---|
1482 | } |
---|
1483 | // and over Q(a) / Fp(a) |
---|
1484 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
1485 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
1486 | { |
---|
1487 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
1488 | else setCharacteristic( -nGetChar() ); |
---|
1489 | for(i=0;i<IDELEMS(I);i++) |
---|
1490 | { |
---|
1491 | L.append(convSingTrPFactoryP(I->m[i])); |
---|
1492 | } |
---|
1493 | } |
---|
1494 | else |
---|
1495 | { |
---|
1496 | WerrorS( feNotImplemented ); |
---|
1497 | return NULL; |
---|
1498 | } |
---|
1499 | |
---|
1500 | List<int> IL=neworderint(L); |
---|
1501 | ListIterator<int> Li; |
---|
1502 | StringSetS(""); |
---|
1503 | Li = IL; |
---|
1504 | int offs=rPar(currRing); |
---|
1505 | int* mark=(int*)omAlloc0((pVariables+offs)*sizeof(int)); |
---|
1506 | int cnt=pVariables+offs; |
---|
1507 | loop |
---|
1508 | { |
---|
1509 | if(! Li.hasItem()) break; |
---|
1510 | BOOLEAN done=TRUE; |
---|
1511 | i=Li.getItem()-1; |
---|
1512 | mark[i]=1; |
---|
1513 | if (i<offs) |
---|
1514 | { |
---|
1515 | done=FALSE; |
---|
1516 | //StringAppendS(currRing->parameter[i]); |
---|
1517 | } |
---|
1518 | else |
---|
1519 | { |
---|
1520 | StringAppendS(currRing->names[i-offs]); |
---|
1521 | } |
---|
1522 | Li++; |
---|
1523 | cnt--; |
---|
1524 | if(cnt==0) break; |
---|
1525 | if (done) StringAppendS(","); |
---|
1526 | } |
---|
1527 | for(i=0;i<pVariables+offs;i++) |
---|
1528 | { |
---|
1529 | BOOLEAN done=TRUE; |
---|
1530 | if(mark[i]==0) |
---|
1531 | { |
---|
1532 | if (i<offs) |
---|
1533 | { |
---|
1534 | done=FALSE; |
---|
1535 | //StringAppendS(currRing->parameter[i]); |
---|
1536 | } |
---|
1537 | else |
---|
1538 | { |
---|
1539 | StringAppendS(currRing->names[i-offs]); |
---|
1540 | } |
---|
1541 | cnt--; |
---|
1542 | if(cnt==0) break; |
---|
1543 | if (done) StringAppendS(","); |
---|
1544 | } |
---|
1545 | } |
---|
1546 | char * s=omStrDup(StringAppendS("")); |
---|
1547 | if (s[strlen(s)-1]==',') s[strlen(s)-1]='\0'; |
---|
1548 | return s; |
---|
1549 | } |
---|
1550 | |
---|
1551 | BOOLEAN singclap_isSqrFree(poly f) |
---|
1552 | { |
---|
1553 | BOOLEAN b=FALSE; |
---|
1554 | Off(SW_RATIONAL); |
---|
1555 | // Q / Fp |
---|
1556 | if (((nGetChar() == 0) || (nGetChar() > 1) ) |
---|
1557 | &&(currRing->parameter==NULL)) |
---|
1558 | { |
---|
1559 | setCharacteristic( nGetChar() ); |
---|
1560 | CanonicalForm F( convSingPFactoryP( f ) ); |
---|
1561 | if((nGetChar()>1)&&(!F.isUnivariate())) |
---|
1562 | goto err; |
---|
1563 | b=(BOOLEAN)isSqrFree(F); |
---|
1564 | } |
---|
1565 | // and over Q(a) / Fp(a) |
---|
1566 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
1567 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
1568 | { |
---|
1569 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
1570 | else setCharacteristic( -nGetChar() ); |
---|
1571 | //if (currRing->minpoly!=NULL) |
---|
1572 | //{ |
---|
1573 | // CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
1574 | // Variable a=rootOf(mipo); |
---|
1575 | // CanonicalForm F( convSingAPFactoryAP( f,a ) ); |
---|
1576 | // ... |
---|
1577 | //} |
---|
1578 | //else |
---|
1579 | { |
---|
1580 | CanonicalForm F( convSingTrPFactoryP( f ) ); |
---|
1581 | b=(BOOLEAN)isSqrFree(F); |
---|
1582 | } |
---|
1583 | Off(SW_RATIONAL); |
---|
1584 | } |
---|
1585 | else |
---|
1586 | { |
---|
1587 | err: |
---|
1588 | WerrorS( feNotImplemented ); |
---|
1589 | } |
---|
1590 | return b; |
---|
1591 | } |
---|
1592 | |
---|
1593 | poly singclap_det( const matrix m ) |
---|
1594 | { |
---|
1595 | int r=m->rows(); |
---|
1596 | if (r!=m->cols()) |
---|
1597 | { |
---|
1598 | Werror("det of %d x %d matrix",r,m->cols()); |
---|
1599 | return NULL; |
---|
1600 | } |
---|
1601 | poly res=NULL; |
---|
1602 | if (( nGetChar() == 0 || nGetChar() > 1 ) |
---|
1603 | && (currRing->parameter==NULL)) |
---|
1604 | { |
---|
1605 | setCharacteristic( nGetChar() ); |
---|
1606 | CFMatrix M(r,r); |
---|
1607 | int i,j; |
---|
1608 | for(i=r;i>0;i--) |
---|
1609 | { |
---|
1610 | for(j=r;j>0;j--) |
---|
1611 | { |
---|
1612 | M(i,j)=convSingPFactoryP(MATELEM(m,i,j)); |
---|
1613 | } |
---|
1614 | } |
---|
1615 | res= convFactoryPSingP( determinant(M,r) ) ; |
---|
1616 | } |
---|
1617 | // and over Q(a) / Fp(a) |
---|
1618 | else if (( nGetChar()==1 ) /* Q(a) */ |
---|
1619 | || (nGetChar() <-1)) /* Fp(a) */ |
---|
1620 | { |
---|
1621 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
1622 | else setCharacteristic( -nGetChar() ); |
---|
1623 | CFMatrix M(r,r); |
---|
1624 | poly res; |
---|
1625 | if (currRing->minpoly!=NULL) |
---|
1626 | { |
---|
1627 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
1628 | Variable a=rootOf(mipo); |
---|
1629 | int i,j; |
---|
1630 | for(i=r;i>0;i--) |
---|
1631 | { |
---|
1632 | for(j=r;j>0;j--) |
---|
1633 | { |
---|
1634 | M(i,j)=convSingAPFactoryAP(MATELEM(m,i,j),a); |
---|
1635 | } |
---|
1636 | } |
---|
1637 | res= convFactoryAPSingAP( determinant(M,r) ) ; |
---|
1638 | } |
---|
1639 | else |
---|
1640 | { |
---|
1641 | int i,j; |
---|
1642 | for(i=r;i>0;i--) |
---|
1643 | { |
---|
1644 | for(j=r;j>0;j--) |
---|
1645 | { |
---|
1646 | M(i,j)=convSingTrPFactoryP(MATELEM(m,i,j)); |
---|
1647 | } |
---|
1648 | } |
---|
1649 | res= convFactoryPSingTrP( determinant(M,r) ); |
---|
1650 | } |
---|
1651 | } |
---|
1652 | else |
---|
1653 | WerrorS( feNotImplemented ); |
---|
1654 | Off(SW_RATIONAL); |
---|
1655 | return res; |
---|
1656 | } |
---|
1657 | |
---|
1658 | int singclap_det_i( intvec * m ) |
---|
1659 | { |
---|
1660 | setCharacteristic( 0 ); |
---|
1661 | CFMatrix M(m->rows(),m->cols()); |
---|
1662 | int i,j; |
---|
1663 | for(i=m->rows();i>0;i--) |
---|
1664 | { |
---|
1665 | for(j=m->cols();j>0;j--) |
---|
1666 | { |
---|
1667 | M(i,j)=IMATELEM(*m,i,j); |
---|
1668 | } |
---|
1669 | } |
---|
1670 | int res= convFactoryISingI( determinant(M,m->rows())) ; |
---|
1671 | Off(SW_RATIONAL); |
---|
1672 | return res; |
---|
1673 | } |
---|
1674 | napoly singclap_alglcm ( napoly f, napoly g ) |
---|
1675 | { |
---|
1676 | FACTORY_ALGOUT( "f", f ); |
---|
1677 | FACTORY_ALGOUT( "g", g ); |
---|
1678 | |
---|
1679 | // over Q(a) / Fp(a) |
---|
1680 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
1681 | else setCharacteristic( -nGetChar() ); |
---|
1682 | napoly res; |
---|
1683 | |
---|
1684 | if (currRing->minpoly!=NULL) |
---|
1685 | { |
---|
1686 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
1687 | Variable a=rootOf(mipo); |
---|
1688 | CanonicalForm F( convSingAFactoryA( f,a ) ), G( convSingAFactoryA( g,a ) ); |
---|
1689 | CanonicalForm GCD; |
---|
1690 | |
---|
1691 | TIMING_START( algLcmTimer ); |
---|
1692 | // calculate gcd |
---|
1693 | #ifdef FACTORY_GCD_TEST |
---|
1694 | GCD = CFPrimitiveGcdUtil::gcd( F, G ); |
---|
1695 | #else |
---|
1696 | GCD = gcd( F, G ); |
---|
1697 | #endif |
---|
1698 | TIMING_END( algLcmTimer ); |
---|
1699 | |
---|
1700 | FACTORY_CFAOUT( "d", GCD ); |
---|
1701 | FACTORY_GCDSTAT( "alcm:", F, G, GCD ); |
---|
1702 | |
---|
1703 | // calculate lcm |
---|
1704 | res= convFactoryASingA( (F/GCD)*G ); |
---|
1705 | } |
---|
1706 | else |
---|
1707 | { |
---|
1708 | CanonicalForm F( convSingTrFactoryP( f ) ), G( convSingTrFactoryP( g ) ); |
---|
1709 | CanonicalForm GCD; |
---|
1710 | TIMING_START( algLcmTimer ); |
---|
1711 | // calculate gcd |
---|
1712 | #ifdef FACTORY_GCD_TEST |
---|
1713 | GCD = CFPrimitiveGcdUtil::gcd( F, G ); |
---|
1714 | #else |
---|
1715 | GCD = gcd( F, G ); |
---|
1716 | #endif |
---|
1717 | TIMING_END( algLcmTimer ); |
---|
1718 | |
---|
1719 | FACTORY_CFTROUT( "d", GCD ); |
---|
1720 | FACTORY_GCDSTAT( "alcm:", F, G, GCD ); |
---|
1721 | |
---|
1722 | // calculate lcm |
---|
1723 | res= convFactoryPSingTr( (F/GCD)*G ); |
---|
1724 | } |
---|
1725 | |
---|
1726 | Off(SW_RATIONAL); |
---|
1727 | return res; |
---|
1728 | } |
---|
1729 | |
---|
1730 | void singclap_algdividecontent ( napoly f, napoly g, napoly &ff, napoly &gg ) |
---|
1731 | { |
---|
1732 | FACTORY_ALGOUT( "f", f ); |
---|
1733 | FACTORY_ALGOUT( "g", g ); |
---|
1734 | |
---|
1735 | // over Q(a) / Fp(a) |
---|
1736 | if (nGetChar()==1) setCharacteristic( 0 ); |
---|
1737 | else setCharacteristic( -nGetChar() ); |
---|
1738 | ff=gg=NULL; |
---|
1739 | On(SW_RATIONAL); |
---|
1740 | |
---|
1741 | if (currRing->minpoly!=NULL) |
---|
1742 | { |
---|
1743 | CanonicalForm mipo=convSingTrFactoryP(((lnumber)currRing->minpoly)->z); |
---|
1744 | Variable a=rootOf(mipo); |
---|
1745 | CanonicalForm F( convSingAFactoryA( f,a ) ), G( convSingAFactoryA( g,a ) ); |
---|
1746 | CanonicalForm GCD; |
---|
1747 | |
---|
1748 | TIMING_START( algContentTimer ); |
---|
1749 | #ifdef FACTORY_GCD_TEST |
---|
1750 | GCD=CFPrimitiveGcdUtil::gcd( F, G ); |
---|
1751 | #else |
---|
1752 | GCD=gcd( F, G ); |
---|
1753 | #endif |
---|
1754 | TIMING_END( algContentTimer ); |
---|
1755 | |
---|
1756 | FACTORY_CFAOUT( "d", GCD ); |
---|
1757 | FACTORY_GCDSTAT( "acnt:", F, G, GCD ); |
---|
1758 | |
---|
1759 | if ((GCD!=1) && (GCD!=0)) |
---|
1760 | { |
---|
1761 | ff= convFactoryASingA( F/ GCD ); |
---|
1762 | gg= convFactoryASingA( G/ GCD ); |
---|
1763 | } |
---|
1764 | } |
---|
1765 | else |
---|
1766 | { |
---|
1767 | CanonicalForm F( convSingTrFactoryP( f ) ), G( convSingTrFactoryP( g ) ); |
---|
1768 | CanonicalForm GCD; |
---|
1769 | |
---|
1770 | TIMING_START( algContentTimer ); |
---|
1771 | #ifdef FACTORY_GCD_TEST |
---|
1772 | GCD=CFPrimitiveGcdUtil::gcd( F, G ); |
---|
1773 | #else |
---|
1774 | GCD=gcd( F, G ); |
---|
1775 | #endif |
---|
1776 | TIMING_END( algContentTimer ); |
---|
1777 | |
---|
1778 | FACTORY_CFTROUT( "d", GCD ); |
---|
1779 | FACTORY_GCDSTAT( "acnt:", F, G, GCD ); |
---|
1780 | |
---|
1781 | if ((GCD!=1) && (GCD!=0)) |
---|
1782 | { |
---|
1783 | ff= convFactoryPSingTr( F/ GCD ); |
---|
1784 | gg= convFactoryPSingTr( G/ GCD ); |
---|
1785 | } |
---|
1786 | } |
---|
1787 | |
---|
1788 | Off(SW_RATIONAL); |
---|
1789 | } |
---|
1790 | |
---|
1791 | #if 0 |
---|
1792 | lists singclap_chineseRemainder(lists x, lists q) |
---|
1793 | { |
---|
1794 | //assume(x->nr == q->nr); |
---|
1795 | //assume(x->nr >= 0); |
---|
1796 | int n=x->nr+1; |
---|
1797 | if ((x->nr<0) || (x->nr!=q->nr)) |
---|
1798 | { |
---|
1799 | WerrorS("list are empty or not of equal length"); |
---|
1800 | return NULL; |
---|
1801 | } |
---|
1802 | lists res=(lists)omAlloc0Bin(slists_bin); |
---|
1803 | CFArray X(1,n), Q(1,n); |
---|
1804 | int i; |
---|
1805 | for(i=0; i<n; i++) |
---|
1806 | { |
---|
1807 | if (x->m[i-1].Typ()==INT_CMD) |
---|
1808 | { |
---|
1809 | X[i]=(int)x->m[i-1].Data(); |
---|
1810 | } |
---|
1811 | else if (x->m[i-1].Typ()==NUMBER_CMD) |
---|
1812 | { |
---|
1813 | number N=(number)x->m[i-1].Data(); |
---|
1814 | X[i]=convSingNFactoryN(N); |
---|
1815 | } |
---|
1816 | else |
---|
1817 | { |
---|
1818 | WerrorS("illegal type in chineseRemainder"); |
---|
1819 | omFreeBin(res,slists_bin); |
---|
1820 | return NULL; |
---|
1821 | } |
---|
1822 | if (q->m[i-1].Typ()==INT_CMD) |
---|
1823 | { |
---|
1824 | Q[i]=(int)q->m[i-1].Data(); |
---|
1825 | } |
---|
1826 | else if (q->m[i-1].Typ()==NUMBER_CMD) |
---|
1827 | { |
---|
1828 | number N=(number)x->m[i-1].Data(); |
---|
1829 | Q[i]=convSingNFactoryN(N); |
---|
1830 | } |
---|
1831 | else |
---|
1832 | { |
---|
1833 | WerrorS("illegal type in chineseRemainder"); |
---|
1834 | omFreeBin(res,slists_bin); |
---|
1835 | return NULL; |
---|
1836 | } |
---|
1837 | } |
---|
1838 | CanonicalForm r, prod; |
---|
1839 | chineseRemainder( X, Q, r, prod ); |
---|
1840 | res->Init(2); |
---|
1841 | res->m[0].rtyp=NUMBER_CMD; |
---|
1842 | res->m[1].rtyp=NUMBER_CMD; |
---|
1843 | res->m[0].data=(char *)convFactoryNSingN( r ); |
---|
1844 | res->m[1].data=(char *)convFactoryNSingN( prod ); |
---|
1845 | return res; |
---|
1846 | } |
---|
1847 | #endif |
---|
1848 | #endif |
---|