1 | // ---------------------------------------------------------------------------- |
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2 | // splist.cc |
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3 | // begin of file |
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4 | // Stephan Endrass, endrass@mathematik.uni-mainz.de |
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5 | // 23.7.99 |
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6 | // ---------------------------------------------------------------------------- |
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7 | |
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8 | #define SPLIST_CC |
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9 | |
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10 | #include "mod2.h" |
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11 | |
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12 | #ifdef HAVE_SPECTRUM |
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13 | |
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14 | #ifdef SPLIST_PRINT |
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15 | #include <iostream.h> |
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16 | #ifndef SPLIST_IOSTREAM |
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17 | #include <stdio.h> |
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18 | #endif |
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19 | #endif |
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20 | |
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21 | #include "structs.h" |
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22 | #include "GMPrat.h" |
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23 | #include "numbers.h" |
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24 | #include "polys.h" |
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25 | #include "npolygon.h" |
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26 | #include "splist.h" |
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27 | #include "intvec.h" |
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28 | |
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29 | // ------------------------ |
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30 | // class spectrumPolyNode |
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31 | // ------------------------ |
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32 | |
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33 | // ---------------------------------------------------------------------------- |
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34 | // Initialize a spectrumPolyNode with zero |
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35 | // ---------------------------------------------------------------------------- |
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36 | |
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37 | void spectrumPolyNode::copy_zero( void ) |
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38 | { |
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39 | next = (spectrumPolyNode*)NULL; |
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40 | mon = NULL; |
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41 | weight = (Rational)0; |
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42 | nf = NULL; |
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43 | } |
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44 | |
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45 | // ---------------------------------------------------------------------------- |
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46 | // Inizialize a spectrumPolyNode shallow from data |
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47 | // ---------------------------------------------------------------------------- |
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48 | |
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49 | void spectrumPolyNode::copy_shallow( |
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50 | spectrumPolyNode *pnode,poly m,const Rational &w,poly f ) |
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51 | { |
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52 | next = pnode; |
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53 | mon = m; |
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54 | weight = w; |
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55 | nf = f; |
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56 | } |
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57 | |
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58 | // ---------------------------------------------------------------------------- |
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59 | // Inizialize a spectrumPolyNode shallow from another spectrumPolyNode |
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60 | // ---------------------------------------------------------------------------- |
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61 | |
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62 | void spectrumPolyNode::copy_shallow( spectrumPolyNode &node ) |
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63 | { |
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64 | next = node.next; |
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65 | mon = node.mon; |
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66 | weight = node.weight; |
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67 | nf = node.nf; |
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68 | } |
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69 | |
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70 | // ---------------------------------------------------------------------------- |
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71 | // Zero constructor for spectrumPolyNode |
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72 | // ---------------------------------------------------------------------------- |
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73 | |
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74 | spectrumPolyNode::spectrumPolyNode( ) |
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75 | { |
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76 | copy_zero( ); |
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77 | } |
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78 | |
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79 | // ---------------------------------------------------------------------------- |
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80 | // Data constructor for spectrumPolyNode is shallow |
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81 | // ---------------------------------------------------------------------------- |
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82 | |
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83 | spectrumPolyNode::spectrumPolyNode( |
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84 | spectrumPolyNode *pnode,poly m,const Rational &w,poly f ) |
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85 | { |
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86 | copy_shallow( pnode,m,w,f ); |
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87 | } |
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88 | |
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89 | // ---------------------------------------------------------------------------- |
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90 | // Destructor is empty since we construct our objects shallow |
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91 | // ---------------------------------------------------------------------------- |
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92 | |
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93 | spectrumPolyNode::~spectrumPolyNode( ) |
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94 | { |
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95 | if( mon!=NULL ) pDelete( &mon ); |
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96 | if( nf !=NULL ) pDelete( &nf ); |
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97 | copy_zero( ); |
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98 | } |
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99 | |
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100 | // ------------------------ |
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101 | // class spectrumPolyList |
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102 | // ------------------------ |
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103 | |
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104 | // ---------------------------------------------------------------------------- |
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105 | // Initialize a spectrumPolyList with zero |
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106 | // ---------------------------------------------------------------------------- |
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107 | |
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108 | void spectrumPolyList::copy_zero( void ) |
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109 | { |
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110 | root = (spectrumPolyNode*)NULL; |
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111 | N = 0; |
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112 | np = (newtonPolygon*)NULL; |
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113 | } |
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114 | |
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115 | // ---------------------------------------------------------------------------- |
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116 | // Inizialize a spectrumPolyList shallow from data |
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117 | // ---------------------------------------------------------------------------- |
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118 | |
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119 | void spectrumPolyList::copy_shallow( |
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120 | spectrumPolyNode *node,int k,newtonPolygon *npolygon ) |
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121 | { |
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122 | root = node; |
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123 | N = k; |
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124 | np = npolygon; |
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125 | } |
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126 | |
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127 | // ---------------------------------------------------------------------------- |
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128 | // Inizialize a spectrumPolyList shallow from another spectrumPolyList |
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129 | // ---------------------------------------------------------------------------- |
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130 | |
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131 | void spectrumPolyList::copy_shallow( spectrumPolyList &splist ) |
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132 | { |
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133 | copy_shallow( splist.root,splist.N,splist.np ); |
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134 | } |
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135 | |
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136 | // ---------------------------------------------------------------------------- |
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137 | // Zero constructor for spectrumPolyList |
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138 | // ---------------------------------------------------------------------------- |
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139 | |
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140 | spectrumPolyList::spectrumPolyList( ) |
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141 | { |
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142 | copy_zero( ); |
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143 | } |
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144 | |
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145 | // ---------------------------------------------------------------------------- |
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146 | // Data constructor for spectrumPolyList |
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147 | // ---------------------------------------------------------------------------- |
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148 | |
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149 | spectrumPolyList::spectrumPolyList( newtonPolygon *npolygon ) |
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150 | { |
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151 | copy_shallow( (spectrumPolyNode*)NULL,0,npolygon ); |
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152 | } |
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153 | |
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154 | // ---------------------------------------------------------------------------- |
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155 | // Destuctor for spectrumPolyList |
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156 | // ---------------------------------------------------------------------------- |
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157 | |
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158 | spectrumPolyList::~spectrumPolyList( ) |
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159 | { |
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160 | spectrumPolyNode *node; |
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161 | |
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162 | while( root!=(spectrumPolyNode*)NULL ) |
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163 | { |
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164 | node = root->next; |
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165 | delete root; |
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166 | root = node; |
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167 | } |
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168 | |
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169 | copy_zero( ); |
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170 | } |
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171 | |
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172 | // ---------------------------------------------------------------------------- |
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173 | // Insert a new node into a spectrumPolyList at position k |
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174 | // If the list is sorted, then |
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175 | // the new node ist inserted such that the list remains sorted. |
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176 | // ---------------------------------------------------------------------------- |
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177 | |
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178 | void spectrumPolyList::insert_node( poly m,poly f ) |
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179 | { |
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180 | #ifdef SPLIST_DEBUG |
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181 | if( np==(newtonPolygon*)NULL ) |
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182 | { |
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183 | #ifdef SPLIST_PRINT |
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184 | #ifdef SPLIST_IOSTREAM |
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185 | cerr << "void spectrumPolyList::insert_node( poly f )" << endl; |
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186 | cerr << " no Newton polygon" << endl; |
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187 | cerr << " exiting..." << endl; |
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188 | #else |
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189 | fprintf( stderr,"void spectrumPolyList::insert_node( poly f )\n" ); |
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190 | fprintf( stderr," no Newton polygon\n" ); |
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191 | fprintf( stderr," exiting...\n" ); |
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192 | #endif |
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193 | #endif |
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194 | |
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195 | exit( 1 ); |
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196 | } |
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197 | #endif |
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198 | |
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199 | spectrumPolyNode *newnode = new spectrumPolyNode( |
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200 | (spectrumPolyNode*)NULL,m,np->weight_shift( m ),f ); |
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201 | |
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202 | if( N==0 || |
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203 | root->weight>newnode->weight || |
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204 | ( root->weight==newnode->weight && |
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205 | pCmp( root->mon,newnode->mon )<0 ) ) |
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206 | { |
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207 | // ---------------------- |
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208 | // insert at position 0 |
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209 | // ---------------------- |
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210 | |
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211 | newnode->next = root; |
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212 | root = newnode; |
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213 | } |
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214 | else if( N==1 ) |
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215 | { |
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216 | // --------------- |
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217 | // insert at end |
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218 | // --------------- |
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219 | |
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220 | root->next = newnode; |
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221 | } |
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222 | else |
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223 | { |
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224 | // ---------------------------- |
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225 | // insert according to weight |
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226 | // ---------------------------- |
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227 | |
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228 | spectrumPolyNode *actual = root; |
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229 | spectrumPolyNode *next = root->next; |
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230 | |
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231 | while( next!=(spectrumPolyNode*)NULL && |
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232 | ( newnode->weight>next->weight || |
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233 | ( newnode->weight==next->weight && |
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234 | pCmp( newnode->mon,next->mon )<0 ) ) ) |
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235 | { |
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236 | actual = next; |
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237 | next = next->next; |
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238 | } |
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239 | |
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240 | actual->next = newnode; |
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241 | newnode->next = next; |
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242 | } |
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243 | N++; |
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244 | } |
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245 | |
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246 | // ---------------------------------------------------------------------------- |
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247 | // Delete a node from a spectrumPolyList |
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248 | // ---------------------------------------------------------------------------- |
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249 | |
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250 | void spectrumPolyList::delete_node( spectrumPolyNode **node ) |
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251 | { |
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252 | spectrumPolyNode *foo = *node; |
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253 | *node = (*node)->next; |
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254 | delete foo; |
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255 | N--; |
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256 | } |
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257 | |
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258 | // ---------------------------------------------------------------------------- |
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259 | // Delete all nodes where node->mon is a multiple of m |
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260 | // In every node delete all instances of m in node->nf |
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261 | // ---------------------------------------------------------------------------- |
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262 | |
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263 | void spectrumPolyList::delete_monomial( poly m ) |
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264 | { |
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265 | spectrumPolyNode **node = &root; |
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266 | poly *f; |
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267 | |
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268 | m = pCopy( m ); |
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269 | |
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270 | while( *node!=(spectrumPolyNode*)NULL ) |
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271 | { |
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272 | if( pCmp( m,(*node)->mon )>=0 && pLmDivisibleByNoComp( m,(*node)->mon ) ) |
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273 | { |
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274 | delete_node( node ); |
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275 | } |
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276 | else if( (*node)->nf!=NULL ) |
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277 | { |
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278 | f = &((*node)->nf); |
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279 | |
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280 | while( *f!=NULL ) |
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281 | { |
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282 | if( pCmp( m,*f )>=0 && pLmDivisibleByNoComp( m,*f ) ) |
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283 | { |
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284 | pLmDelete(f); |
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285 | } |
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286 | else |
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287 | { |
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288 | f = &(pNext( *f )); |
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289 | } |
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290 | } |
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291 | |
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292 | if( (*node)->nf==NULL ) |
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293 | { |
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294 | delete_node( node ); |
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295 | } |
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296 | else |
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297 | { |
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298 | node = &((*node)->next); |
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299 | } |
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300 | } |
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301 | else |
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302 | { |
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303 | node = &((*node)->next); |
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304 | } |
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305 | } |
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306 | pDelete( &m ); |
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307 | } |
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308 | |
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309 | // ---------------------------------------------------------------------------- |
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310 | // Print a spectrumPolyList |
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311 | // ---------------------------------------------------------------------------- |
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312 | |
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313 | #ifdef SPLIST_PRINT |
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314 | ostream & operator << ( ostream &s,const spectrumPolyList &l ) |
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315 | { |
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316 | #ifdef SPLIST_IOSTREAM |
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317 | s << "elements: " << l.N << endl; |
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318 | s << "{"; |
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319 | #else |
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320 | fprintf( stdout,"elements: %d\n",l.N ); |
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321 | fprintf( stdout,"{" ); |
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322 | #endif |
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323 | |
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324 | if( l.root!=(spectrumPolyNode*)NULL ) |
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325 | { |
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326 | #ifdef SPLIST_IOSTREAM |
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327 | s << "("; |
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328 | pWrite0( l.root->mon ); |
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329 | s << "=>"; |
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330 | pWrite0( l.root->nf ); |
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331 | cout << "," << l.root->weight << ")" << endl; |
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332 | #else |
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333 | fprintf( stdout,"(" ); |
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334 | pWrite0( l.root->mon ); |
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335 | fprintf( stdout,"=>" ); |
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336 | pWrite0( l.root->nf ); |
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337 | fprintf( stdout,"," ); |
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338 | cout << l.root->weight; |
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339 | fprintf( stdout,")\n" ); |
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340 | #endif |
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341 | |
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342 | spectrumPolyNode *node = l.root->next; |
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343 | |
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344 | while( node!=(spectrumPolyNode*)NULL ) |
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345 | { |
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346 | #ifdef SPLIST_IOSTREAM |
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347 | s << ",("; |
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348 | pWrite0( node->mon ); |
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349 | s << "=>"; |
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350 | pWrite0( node->nf ); |
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351 | cout << "," << node->weight << ")" << endl; |
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352 | #else |
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353 | fprintf( stdout,",(" ); |
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354 | pWrite0( node->mon ); |
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355 | fprintf( stdout,"=>" ); |
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356 | pWrite0( node->nf ); |
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357 | fprintf( stdout,"," ); |
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358 | cout << node->weight; |
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359 | fprintf( stdout,")\n" ); |
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360 | #endif |
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361 | |
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362 | node = node->next; |
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363 | } |
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364 | } |
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365 | #ifdef SPLIST_IOSTREAM |
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366 | s << "}"; |
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367 | #else |
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368 | fprintf( stdout,"}" ); |
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369 | #endif |
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370 | |
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371 | return s; |
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372 | } |
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373 | #endif |
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374 | |
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375 | #endif /* HAVE_SPECTRUM */ |
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376 | // ---------------------------------------------------------------------------- |
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377 | // splist.cc |
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378 | // end of file |
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379 | // ---------------------------------------------------------------------------- |
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380 | |
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