[35aab3] | 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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[599326] | 10 | #include <kernel/mod2.h> |
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[35aab3] | 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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[599326] | 21 | #include <kernel/structs.h> |
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| 22 | #include <kernel/GMPrat.h> |
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[0f401f] | 23 | #include <coeffs/numbers.h> |
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[9af8d18] | 24 | #include <polys/monomials/p_polys.h> |
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[599326] | 25 | #include <kernel/npolygon.h> |
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| 26 | #include <kernel/splist.h> |
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[210e07] | 27 | #include <misc/intvec.h> |
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[35aab3] | 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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[ee3e1ae] | 40 | mon = NULL; |
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[35aab3] | 41 | weight = (Rational)0; |
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[ee3e1ae] | 42 | nf = NULL; |
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[9af8d18] | 43 | r = NULL; |
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[35aab3] | 44 | } |
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| 45 | |
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| 46 | // ---------------------------------------------------------------------------- |
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| 47 | // Inizialize a spectrumPolyNode shallow from data |
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| 48 | // ---------------------------------------------------------------------------- |
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| 49 | |
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| 50 | void spectrumPolyNode::copy_shallow( |
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[9af8d18] | 51 | spectrumPolyNode *pnode,poly m,const Rational &w,poly f, const ring R ) |
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[35aab3] | 52 | { |
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| 53 | next = pnode; |
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| 54 | mon = m; |
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| 55 | weight = w; |
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| 56 | nf = f; |
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[9af8d18] | 57 | r = R; |
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[35aab3] | 58 | } |
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| 59 | |
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| 60 | // ---------------------------------------------------------------------------- |
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| 61 | // Inizialize a spectrumPolyNode shallow from another spectrumPolyNode |
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| 62 | // ---------------------------------------------------------------------------- |
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| 63 | |
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| 64 | void spectrumPolyNode::copy_shallow( spectrumPolyNode &node ) |
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| 65 | { |
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| 66 | next = node.next; |
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| 67 | mon = node.mon; |
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| 68 | weight = node.weight; |
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| 69 | nf = node.nf; |
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[9af8d18] | 70 | r = node.r; |
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[35aab3] | 71 | } |
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| 72 | |
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| 73 | // ---------------------------------------------------------------------------- |
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| 74 | // Zero constructor for spectrumPolyNode |
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| 75 | // ---------------------------------------------------------------------------- |
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| 76 | |
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| 77 | spectrumPolyNode::spectrumPolyNode( ) |
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| 78 | { |
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| 79 | copy_zero( ); |
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| 80 | } |
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| 81 | |
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| 82 | // ---------------------------------------------------------------------------- |
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| 83 | // Data constructor for spectrumPolyNode is shallow |
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| 84 | // ---------------------------------------------------------------------------- |
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| 85 | |
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| 86 | spectrumPolyNode::spectrumPolyNode( |
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[9af8d18] | 87 | spectrumPolyNode *pnode,poly m,const Rational &w,poly f, const ring R ) |
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[35aab3] | 88 | { |
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[9af8d18] | 89 | copy_shallow( pnode,m,w,f,R ); |
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[35aab3] | 90 | } |
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| 91 | |
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| 92 | // ---------------------------------------------------------------------------- |
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| 93 | // Destructor is empty since we construct our objects shallow |
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| 94 | // ---------------------------------------------------------------------------- |
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| 95 | |
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[9af8d18] | 96 | spectrumPolyNode::~spectrumPolyNode() |
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[35aab3] | 97 | { |
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[9af8d18] | 98 | if( mon!=NULL ) p_Delete( &mon, r ); |
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| 99 | if( nf !=NULL ) p_Delete( &nf,r ); |
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[35aab3] | 100 | copy_zero( ); |
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| 101 | } |
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| 102 | |
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| 103 | // ------------------------ |
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| 104 | // class spectrumPolyList |
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| 105 | // ------------------------ |
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| 106 | |
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| 107 | // ---------------------------------------------------------------------------- |
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| 108 | // Initialize a spectrumPolyList with zero |
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| 109 | // ---------------------------------------------------------------------------- |
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| 110 | |
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| 111 | void spectrumPolyList::copy_zero( void ) |
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| 112 | { |
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| 113 | root = (spectrumPolyNode*)NULL; |
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| 114 | N = 0; |
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| 115 | np = (newtonPolygon*)NULL; |
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| 116 | } |
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| 117 | |
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| 118 | // ---------------------------------------------------------------------------- |
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| 119 | // Inizialize a spectrumPolyList shallow from data |
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| 120 | // ---------------------------------------------------------------------------- |
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| 121 | |
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| 122 | void spectrumPolyList::copy_shallow( |
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| 123 | spectrumPolyNode *node,int k,newtonPolygon *npolygon ) |
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| 124 | { |
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| 125 | root = node; |
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| 126 | N = k; |
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| 127 | np = npolygon; |
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| 128 | } |
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| 129 | |
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| 130 | // ---------------------------------------------------------------------------- |
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| 131 | // Inizialize a spectrumPolyList shallow from another spectrumPolyList |
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| 132 | // ---------------------------------------------------------------------------- |
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| 133 | |
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| 134 | void spectrumPolyList::copy_shallow( spectrumPolyList &splist ) |
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| 135 | { |
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| 136 | copy_shallow( splist.root,splist.N,splist.np ); |
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| 137 | } |
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| 138 | |
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| 139 | // ---------------------------------------------------------------------------- |
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| 140 | // Zero constructor for spectrumPolyList |
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| 141 | // ---------------------------------------------------------------------------- |
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| 142 | |
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| 143 | spectrumPolyList::spectrumPolyList( ) |
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| 144 | { |
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| 145 | copy_zero( ); |
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| 146 | } |
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| 147 | |
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| 148 | // ---------------------------------------------------------------------------- |
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| 149 | // Data constructor for spectrumPolyList |
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| 150 | // ---------------------------------------------------------------------------- |
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| 151 | |
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| 152 | spectrumPolyList::spectrumPolyList( newtonPolygon *npolygon ) |
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| 153 | { |
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| 154 | copy_shallow( (spectrumPolyNode*)NULL,0,npolygon ); |
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| 155 | } |
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| 156 | |
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| 157 | // ---------------------------------------------------------------------------- |
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| 158 | // Destuctor for spectrumPolyList |
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| 159 | // ---------------------------------------------------------------------------- |
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| 160 | |
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| 161 | spectrumPolyList::~spectrumPolyList( ) |
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| 162 | { |
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| 163 | spectrumPolyNode *node; |
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| 164 | |
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| 165 | while( root!=(spectrumPolyNode*)NULL ) |
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| 166 | { |
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| 167 | node = root->next; |
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| 168 | delete root; |
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| 169 | root = node; |
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| 170 | } |
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| 171 | |
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| 172 | copy_zero( ); |
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| 173 | } |
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| 174 | |
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| 175 | // ---------------------------------------------------------------------------- |
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| 176 | // Insert a new node into a spectrumPolyList at position k |
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| 177 | // If the list is sorted, then |
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| 178 | // the new node ist inserted such that the list remains sorted. |
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| 179 | // ---------------------------------------------------------------------------- |
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| 180 | |
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[9af8d18] | 181 | void spectrumPolyList::insert_node( poly m,poly f, const ring R ) |
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[35aab3] | 182 | { |
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| 183 | #ifdef SPLIST_DEBUG |
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| 184 | if( np==(newtonPolygon*)NULL ) |
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| 185 | { |
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| 186 | #ifdef SPLIST_PRINT |
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| 187 | #ifdef SPLIST_IOSTREAM |
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| 188 | cerr << "void spectrumPolyList::insert_node( poly f )" << endl; |
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| 189 | cerr << " no Newton polygon" << endl; |
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| 190 | cerr << " exiting..." << endl; |
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| 191 | #else |
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| 192 | fprintf( stderr,"void spectrumPolyList::insert_node( poly f )\n" ); |
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| 193 | fprintf( stderr," no Newton polygon\n" ); |
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| 194 | fprintf( stderr," exiting...\n" ); |
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| 195 | #endif |
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| 196 | #endif |
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| 197 | |
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| 198 | exit( 1 ); |
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| 199 | } |
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| 200 | #endif |
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| 201 | |
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| 202 | spectrumPolyNode *newnode = new spectrumPolyNode( |
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[9af8d18] | 203 | (spectrumPolyNode*)NULL,m,np->weight_shift( m,R ),f, R ); |
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[35aab3] | 204 | |
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| 205 | if( N==0 || |
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| 206 | root->weight>newnode->weight || |
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| 207 | ( root->weight==newnode->weight && |
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[9af8d18] | 208 | p_Cmp( root->mon,newnode->mon,R )<0 ) ) |
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[35aab3] | 209 | { |
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| 210 | // ---------------------- |
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| 211 | // insert at position 0 |
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| 212 | // ---------------------- |
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| 213 | |
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| 214 | newnode->next = root; |
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| 215 | root = newnode; |
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| 216 | } |
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| 217 | else if( N==1 ) |
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| 218 | { |
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| 219 | // --------------- |
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| 220 | // insert at end |
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| 221 | // --------------- |
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| 222 | |
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| 223 | root->next = newnode; |
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| 224 | } |
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| 225 | else |
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| 226 | { |
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| 227 | // ---------------------------- |
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| 228 | // insert according to weight |
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| 229 | // ---------------------------- |
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| 230 | |
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| 231 | spectrumPolyNode *actual = root; |
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| 232 | spectrumPolyNode *next = root->next; |
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| 233 | |
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| 234 | while( next!=(spectrumPolyNode*)NULL && |
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| 235 | ( newnode->weight>next->weight || |
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| 236 | ( newnode->weight==next->weight && |
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[9af8d18] | 237 | p_Cmp( newnode->mon,next->mon, R )<0 ) ) ) |
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[35aab3] | 238 | { |
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| 239 | actual = next; |
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| 240 | next = next->next; |
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| 241 | } |
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| 242 | |
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| 243 | actual->next = newnode; |
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| 244 | newnode->next = next; |
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| 245 | } |
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| 246 | N++; |
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| 247 | } |
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| 248 | |
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| 249 | // ---------------------------------------------------------------------------- |
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| 250 | // Delete a node from a spectrumPolyList |
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| 251 | // ---------------------------------------------------------------------------- |
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| 252 | |
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| 253 | void spectrumPolyList::delete_node( spectrumPolyNode **node ) |
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| 254 | { |
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| 255 | spectrumPolyNode *foo = *node; |
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| 256 | *node = (*node)->next; |
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| 257 | delete foo; |
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| 258 | N--; |
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| 259 | } |
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| 260 | |
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| 261 | // ---------------------------------------------------------------------------- |
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| 262 | // Delete all nodes where node->mon is a multiple of m |
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| 263 | // In every node delete all instances of m in node->nf |
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| 264 | // ---------------------------------------------------------------------------- |
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| 265 | |
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[9af8d18] | 266 | void spectrumPolyList::delete_monomial( poly m, const ring R ) |
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[35aab3] | 267 | { |
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| 268 | spectrumPolyNode **node = &root; |
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| 269 | poly *f; |
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| 270 | |
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[9af8d18] | 271 | m = p_Copy( m,R ); |
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[35aab3] | 272 | |
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| 273 | while( *node!=(spectrumPolyNode*)NULL ) |
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| 274 | { |
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[9af8d18] | 275 | if( p_Cmp( m,(*node)->mon,R )>=0 && p_LmDivisibleByNoComp( m,(*node)->mon, R )) |
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[35aab3] | 276 | { |
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| 277 | delete_node( node ); |
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| 278 | } |
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[ee3e1ae] | 279 | else if( (*node)->nf!=NULL ) |
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[35aab3] | 280 | { |
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| 281 | f = &((*node)->nf); |
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| 282 | |
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[ee3e1ae] | 283 | while( *f!=NULL ) |
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[35aab3] | 284 | { |
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[9af8d18] | 285 | if( p_Cmp( m,*f,R )>=0 && p_LmDivisibleByNoComp( m,*f,R ) ) |
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[35aab3] | 286 | { |
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[9af8d18] | 287 | p_LmDelete(f,R); |
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[35aab3] | 288 | } |
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| 289 | else |
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[ee3e1ae] | 290 | { |
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[35aab3] | 291 | f = &(pNext( *f )); |
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| 292 | } |
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| 293 | } |
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| 294 | |
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[ee3e1ae] | 295 | if( (*node)->nf==NULL ) |
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[35aab3] | 296 | { |
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| 297 | delete_node( node ); |
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| 298 | } |
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| 299 | else |
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| 300 | { |
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| 301 | node = &((*node)->next); |
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| 302 | } |
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| 303 | } |
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| 304 | else |
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| 305 | { |
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| 306 | node = &((*node)->next); |
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| 307 | } |
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| 308 | } |
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[9af8d18] | 309 | p_Delete( &m,R ); |
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[35aab3] | 310 | } |
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| 311 | |
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| 312 | // ---------------------------------------------------------------------------- |
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| 313 | // Print a spectrumPolyList |
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| 314 | // ---------------------------------------------------------------------------- |
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| 315 | |
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| 316 | #ifdef SPLIST_PRINT |
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| 317 | ostream & operator << ( ostream &s,const spectrumPolyList &l ) |
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| 318 | { |
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| 319 | #ifdef SPLIST_IOSTREAM |
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| 320 | s << "elements: " << l.N << endl; |
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| 321 | s << "{"; |
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| 322 | #else |
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| 323 | fprintf( stdout,"elements: %d\n",l.N ); |
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| 324 | fprintf( stdout,"{" ); |
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| 325 | #endif |
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| 326 | |
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| 327 | if( l.root!=(spectrumPolyNode*)NULL ) |
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| 328 | { |
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| 329 | #ifdef SPLIST_IOSTREAM |
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| 330 | s << "("; |
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| 331 | pWrite0( l.root->mon ); |
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| 332 | s << "=>"; |
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| 333 | pWrite0( l.root->nf ); |
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| 334 | cout << "," << l.root->weight << ")" << endl; |
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| 335 | #else |
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| 336 | fprintf( stdout,"(" ); |
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| 337 | pWrite0( l.root->mon ); |
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| 338 | fprintf( stdout,"=>" ); |
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| 339 | pWrite0( l.root->nf ); |
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| 340 | fprintf( stdout,"," ); |
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| 341 | cout << l.root->weight; |
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| 342 | fprintf( stdout,")\n" ); |
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| 343 | #endif |
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| 344 | |
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| 345 | spectrumPolyNode *node = l.root->next; |
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| 346 | |
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| 347 | while( node!=(spectrumPolyNode*)NULL ) |
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| 348 | { |
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| 349 | #ifdef SPLIST_IOSTREAM |
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| 350 | s << ",("; |
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| 351 | pWrite0( node->mon ); |
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| 352 | s << "=>"; |
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| 353 | pWrite0( node->nf ); |
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| 354 | cout << "," << node->weight << ")" << endl; |
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| 355 | #else |
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| 356 | fprintf( stdout,",(" ); |
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| 357 | pWrite0( node->mon ); |
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| 358 | fprintf( stdout,"=>" ); |
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| 359 | pWrite0( node->nf ); |
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| 360 | fprintf( stdout,"," ); |
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| 361 | cout << node->weight; |
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| 362 | fprintf( stdout,")\n" ); |
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| 363 | #endif |
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| 364 | |
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| 365 | node = node->next; |
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| 366 | } |
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| 367 | } |
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| 368 | #ifdef SPLIST_IOSTREAM |
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| 369 | s << "}"; |
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| 370 | #else |
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| 371 | fprintf( stdout,"}" ); |
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| 372 | #endif |
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| 373 | |
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| 374 | return s; |
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| 375 | } |
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| 376 | #endif |
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| 377 | |
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| 378 | #endif /* HAVE_SPECTRUM */ |
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| 379 | // ---------------------------------------------------------------------------- |
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| 380 | // splist.cc |
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| 381 | // end of file |
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| 382 | // ---------------------------------------------------------------------------- |
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| 383 | |
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