1 | /**************************************** |
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2 | * Computer Algebra System SINGULAR * |
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3 | ****************************************/ |
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4 | /*************************************************************** |
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5 | * File: p_KBucketSetLm__Template.cc |
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6 | * Purpose: template for setting the Lm of a bucket |
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7 | * Author: obachman (Olaf Bachmann) |
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8 | * Created: 12/00 |
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9 | * Version: $Id: p_kBucketSetLm__T.cc,v 1.5 2008-08-07 15:08:22 Singular Exp $ |
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10 | *******************************************************************/ |
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11 | #undef USE_COEF_BUCKETS |
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12 | #ifdef HAVE_COEF_BUCKETS |
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13 | #define USE_COEF_BUCKETS |
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14 | #endif |
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15 | |
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16 | #ifdef USE_COEF_BUCKETS |
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17 | #define MULTIPLY_BUCKET(B,I) do \ |
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18 | { if (B->coef[I]!=NULL) \ |
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19 | { \ |
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20 | B->buckets[I]=p_Mult_q(B->buckets[I],B->coef[I],B->bucket_ring); \ |
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21 | B->coef[I]=NULL; \ |
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22 | } \ |
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23 | } while(0) |
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24 | #else |
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25 | #define MULTIPLY_BUCKET(B,I) |
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26 | #endif |
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27 | #ifndef USE_COEF_BUCKETS |
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28 | LINKAGE void p_kBucketSetLm(kBucket_pt bucket) |
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29 | { |
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30 | int j = 0; |
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31 | poly lt; |
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32 | BOOLEAN zero = FALSE; |
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33 | ring r = bucket->bucket_ring; |
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34 | assume(bucket->buckets[0] == NULL && bucket->buckets_length[0] == 0); |
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35 | DECLARE_LENGTH(const unsigned long length = r->ExpL_Size); |
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36 | DECLARE_ORDSGN(const long* ordsgn = r->ordsgn); |
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37 | poly p; |
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38 | |
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39 | do |
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40 | { |
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41 | j = 0; |
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42 | for (int i = 1; i<=bucket->buckets_used; i++) |
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43 | { |
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44 | if (bucket->buckets[i] != NULL) |
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45 | { |
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46 | MULTIPLY_BUCKET(bucket,i); |
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47 | p = bucket->buckets[j]; |
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48 | if (j == 0) |
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49 | { |
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50 | if (p != NULL) goto Greater; |
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51 | j = i; |
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52 | goto Continue; |
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53 | } |
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54 | assume(p != NULL); |
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55 | p_MemCmp(bucket->buckets[i]->exp, p->exp, length, ordsgn, goto Equal, goto Greater, goto Continue); |
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56 | |
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57 | Greater: |
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58 | { |
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59 | if (n_IsZero(pGetCoeff(p), r)) |
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60 | { |
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61 | n_Delete(&pGetCoeff(p), r); |
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62 | pIter(bucket->buckets[j]); |
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63 | p_FreeBinAddr(p, r); |
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64 | (bucket->buckets_length[j])--; |
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65 | } |
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66 | j = i; |
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67 | goto Continue; |
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68 | } |
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69 | |
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70 | Equal: |
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71 | { |
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72 | MULTIPLY_BUCKET(bucket,i); |
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73 | number tn = pGetCoeff(p); |
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74 | #if 0 |
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75 | pSetCoeff0(p, n_Add(pGetCoeff(bucket->buckets[i]), tn, r)); |
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76 | n_Delete(&tn, r); |
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77 | #else |
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78 | pSetCoeff0(p, n_InpAdd(tn,pGetCoeff(bucket->buckets[i]), r)); |
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79 | #endif |
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80 | p = bucket->buckets[i]; |
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81 | pIter(bucket->buckets[i]); |
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82 | n_Delete(&pGetCoeff(p), r); |
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83 | p_FreeBinAddr(p, r); |
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84 | (bucket->buckets_length[i])--; |
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85 | } |
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86 | |
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87 | Continue:; |
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88 | } |
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89 | } |
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90 | p = bucket->buckets[j]; |
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91 | if (j > 0 && n_IsZero(pGetCoeff(p), r)) |
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92 | { |
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93 | n_Delete(&pGetCoeff(p), r); |
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94 | pIter(bucket->buckets[j]); |
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95 | p_FreeBinAddr(p, r); |
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96 | (bucket->buckets_length[j])--; |
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97 | j = -1; |
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98 | } |
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99 | } |
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100 | while (j < 0); |
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101 | |
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102 | if (j == 0) |
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103 | { |
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104 | return; |
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105 | } |
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106 | |
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107 | assume(bucket->buckets[j] != NULL); |
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108 | lt = bucket->buckets[j]; |
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109 | bucket->buckets[j] = pNext(lt); |
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110 | bucket->buckets_length[j]--; |
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111 | pNext(lt) = NULL; |
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112 | bucket->buckets[0] = lt; |
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113 | bucket->buckets_length[0] = 1; |
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114 | |
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115 | kBucketAdjustBucketsUsed(bucket); |
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116 | } |
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117 | #else |
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118 | LINKAGE void p_kBucketSetLm(kBucket_pt bucket) |
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119 | { |
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120 | //int j = 0; |
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121 | poly lt; |
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122 | BOOLEAN zero = FALSE; |
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123 | ring r = bucket->bucket_ring; |
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124 | assume((bucket->buckets[0] == NULL) && (bucket->buckets_length[0] == 0) && (bucket->coef[0]==0)); |
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125 | DECLARE_LENGTH(const unsigned long length = r->ExpL_Size); |
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126 | DECLARE_ORDSGN(const long* ordsgn = r->ordsgn); |
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127 | poly p=NULL; |
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128 | while(p==NULL){ |
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129 | int found=-1000; |
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130 | for (int i = 1; i<=bucket->buckets_used; i++) |
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131 | { |
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132 | if (bucket->buckets[i] != NULL) |
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133 | { |
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134 | |
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135 | if (p == NULL) |
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136 | { |
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137 | p=bucket->buckets[i]; |
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138 | found=i; |
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139 | continue; |
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140 | } |
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141 | assume(p != NULL); |
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142 | p_MemCmp(bucket->buckets[i]->exp, p->exp, length, ordsgn, goto Continue, goto Greater, goto Continue); |
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143 | //assume(p_LmCmp(bucket->buckets[i],p,r)==1); |
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144 | Greater: |
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145 | //if (p_LmCmp(bucket->buckets[i],p,r)!=1) continue; |
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146 | found=i; |
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147 | p=bucket->buckets[i]; |
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148 | Continue:; |
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149 | } |
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150 | } |
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151 | |
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152 | |
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153 | if (found<0) return; |
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154 | assume(p==bucket->buckets[found]); |
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155 | assume(p!=NULL); |
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156 | |
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157 | p=kBucketExtractLmOfBucket(bucket, found); |
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158 | assume(p!=NULL); |
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159 | p_Test(p,r); |
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160 | poly copy=p_LmInit(p, r); |
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161 | |
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162 | for (int i = found+1; i<=bucket->buckets_used; i++) |
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163 | { |
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164 | |
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165 | if (bucket->buckets[i] != NULL) |
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166 | { |
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167 | if(p_LmEqual(bucket->buckets[i], copy,r)){ |
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168 | poly q=kBucketExtractLmOfBucket(bucket,i); |
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169 | assume(p!=q); |
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170 | p=p_Add_q(p, q,r); |
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171 | assume(pLength(bucket->buckets[i])==bucket->buckets_length[i]); |
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172 | } |
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173 | |
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174 | |
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175 | |
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176 | } |
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177 | } |
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178 | p_Delete(©, r); |
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179 | } |
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180 | |
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181 | //assume(bucket->buckets[j] != NULL); |
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182 | assume(pLength(p)==1); |
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183 | lt = p; |
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184 | |
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185 | bucket->buckets[0] = lt; |
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186 | bucket->buckets_length[0] = 1; |
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187 | |
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188 | kBucketAdjustBucketsUsed(bucket); |
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189 | kbTest(bucket); |
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190 | } |
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191 | #endif |
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