My Project
Functions
walkProc.h File Reference
#include "kernel/groebner_walk/walkMain.h"

Go to the source code of this file.

Functions

ideal walkProc (leftv first, leftv second)
 
ideal fractalWalkProc (leftv first, leftv second)
 
WalkState walkConsistency (ring sring, ring dring, int *vperm)
 
WalkState fractalWalkConsistency (ring sring, ring dring, int *vperm)
 

Function Documentation

◆ fractalWalkConsistency()

WalkState fractalWalkConsistency ( ring  sring,
ring  dring,
int *  vperm 
)

Definition at line 220 of file walkProc.cc.

221 {
222  int k;
223  WalkState state= WalkOk;
224 
225  if ( rChar(sring) != rChar(dring) )
226  {
227  WerrorS( "rings must have same characteristic" );
228  state= WalkIncompatibleRings;
229  }
230 
231  if ( (rHasLocalOrMixedOrdering(sring))
232  || (rHasLocalOrMixedOrdering(dring)) )
233  {
234  WerrorS( "only works for global orderings" );
235  state= WalkIncompatibleRings;
236  }
237 
238  if ( rVar(sring) != rVar(dring) )
239  {
240  WerrorS( "rings must have same number of variables" );
241  state= WalkIncompatibleRings;
242  }
243 
244  if ( rPar(sring) != rPar(dring) )
245  {
246  WerrorS( "rings must have same number of parameters" );
247  state= WalkIncompatibleRings;
248  }
249 
250  if ( state != WalkOk ) return state;
251 
252  // now the rings have the same number of variables resp. parameters.
253  // check if the names of the variables resp. parameters do agree:
254  int nvar = sring->N;
255  int npar = rPar(sring);
256  int * pperm;
257  char **snames;
258  char **dnames;
259 
260  if ( npar > 0 )
261  {
262  snames=sring->cf->extRing->names;
263  dnames=dring->cf->extRing->names;
264  pperm= (int *)omAlloc0( (npar+1)*sizeof( int ) );
265  }
266  else
267  {
268  pperm= NULL;
269  snames=NULL;
270  dnames=NULL;
271  }
272 
273  maFindPerm( sring->names, nvar, snames, npar,
274  dring->names, nvar, dnames, npar, vperm, pperm,
275  dring->cf->type);
276 
277  for ( k= nvar; (k > 0) && (state == WalkOk); k-- )
278  if ( vperm[k] <= 0 )
279  {
280  WerrorS( "variable names do not agree" );
281  state= WalkIncompatibleRings;
282  }
283 
284  for ( k= npar; (k > 0) && (state == WalkOk); k-- )
285  if ( pperm[k-1] >= 0 )
286  {
287  WerrorS( "parameter names do not agree" );
288  state= WalkIncompatibleRings;
289  }
290 
291  //check if order of variables resp. parameters does agree
292  //remove this to if you want to allow permutations of variables
293  for ( k= nvar; (k > 0) && (state == WalkOk); k-- )
294  if ( vperm[k] != (k) )
295  {
296  WerrorS( "orders of variables do not agree" );
297  state= WalkIncompatibleRings;
298  }
299 
300  //remove this to if you want to allow permutations of parameters
301  for ( k= npar; (k > 0) && (state == WalkOk); k-- )
302  if ( pperm[k-1] != (-k) )
303  {
304  WerrorS( "orders of parameters do not agree" );
305  state= WalkIncompatibleRings;
306  }
307 
308  if (pperm != NULL)
309  omFreeSize( (ADDRESS)pperm, (npar+1)*sizeof( int ) );
310 
311  if ( state != WalkOk ) return state;
312 
313  // check if any of the rings are qrings or not
314  if ( (sring->qideal != NULL) || (dring->qideal != NULL) )
315  {
316  WerrorS( "rings are not allowed to be qrings");
317  return WalkIncompatibleRings;
318  }
319 
320  int i=0;
321  while(dring->order[i]!=0){
322  if( !(dring->order[i]==ringorder_lp) &&
323  !(dring->order[i]==ringorder_dp) &&
324  !(dring->order[i]==ringorder_Dp) &&
325  !(dring->order[i]==ringorder_wp) &&
326  !(dring->order[i]==ringorder_Wp) &&
327  !(dring->order[i]==ringorder_C) &&
328  !(dring->order[0]==ringorder_M)
329  )
330  {
332  }
333  i++;
334  }
335 
336  i=0;
337  while(sring->order[i]!=0)
338  {
339  if( !(sring->order[i]==ringorder_lp) &&
340  !(sring->order[i]==ringorder_dp) &&
341  !(sring->order[i]==ringorder_Dp) &&
342  !(sring->order[i]==ringorder_wp) &&
343  !(sring->order[i]==ringorder_Wp) &&
344  !(sring->order[i]==ringorder_C) &&
345  !(dring->order[0]==ringorder_M)
346  )
347  {
349  }
350  i++;
351  }
352 
353  return state;
354 }
void * ADDRESS
Definition: auxiliary.h:119
int i
Definition: cfEzgcd.cc:132
int k
Definition: cfEzgcd.cc:99
void WerrorS(const char *s)
Definition: feFopen.cc:24
void maFindPerm(char const *const *const preim_names, int preim_n, char const *const *const preim_par, int preim_p, char const *const *const names, int n, char const *const *const par, int nop, int *perm, int *par_perm, n_coeffType ch)
Definition: maps.cc:163
#define omFreeSize(addr, size)
Definition: omAllocDecl.h:260
#define omAlloc0(size)
Definition: omAllocDecl.h:211
#define NULL
Definition: omList.c:12
int rChar(ring r)
Definition: ring.cc:711
static int rPar(const ring r)
(r->cf->P)
Definition: ring.h:600
@ ringorder_lp
Definition: ring.h:77
@ ringorder_C
Definition: ring.h:73
@ ringorder_Dp
Definition: ring.h:80
@ ringorder_dp
Definition: ring.h:78
@ ringorder_Wp
Definition: ring.h:82
@ ringorder_wp
Definition: ring.h:81
@ ringorder_M
Definition: ring.h:74
static short rVar(const ring r)
#define rVar(r) (r->N)
Definition: ring.h:593
BOOLEAN rHasLocalOrMixedOrdering(const ring r)
Definition: ring.h:761
WalkState
Definition: walkMain.h:7
@ WalkIncompatibleDestRing
Definition: walkMain.h:28
@ WalkIncompatibleRings
Definition: walkMain.h:9
@ WalkOk
Definition: walkMain.h:30
@ WalkIncompatibleSourceRing
Definition: walkMain.h:29

◆ fractalWalkProc()

ideal fractalWalkProc ( leftv  first,
leftv  second 
)

Definition at line 161 of file walk_ip.cc.

162 {
163 
164  //unperturbedStartVectorStrategy SHOULD BE SET BY THE USER THROUGH
165  //A THIRD ARGUMENT. TRUE MEANS THAT THE UNPERTURBED START
166  //VECTOR STRATEGY IS USED AND FALSE THAT THE START VECTOR IS
167  //MAXIMALLY PERTURBED
168 
169  BOOLEAN unperturbedStartVectorStrategy=TRUE;
170 
171  WalkState state = WalkOk;
172  BITSET save1,save2;
173  SI_SAVE_OPT(save1,save2);
174  si_opt_1 &= (~Sy_bit(OPT_REDSB)); //make sure option noredSB is set
175 
176  ring destRing = currRing;
177  ideal destIdeal = NULL;
178  idhdl sourceRingHdl = (idhdl)first->data;
179  rSetHdl( sourceRingHdl );
180  ring sourceRing = currRing;
181 
182  int * vperm = (int *)omAlloc0( (currRing->N+1)*sizeof( int ) );
183  state= fractalWalkConsistency( sourceRing, destRing, vperm );
184  omFreeSize( (ADDRESS)vperm, (currRing->N+1)*sizeof(int) );
185 
186  ideal sourceIdeal;
187  BOOLEAN sourcIdealIsSB=FALSE;
188  if ( state == WalkOk ) {
189  idhdl ih = currRing->idroot->get( second->Name(), myynest );
190  if ( (ih != NULL) && (IDTYP(ih)==IDEAL_CMD) ) {
191  sourceIdeal = IDIDEAL( ih );
192  if(hasFlag((leftv)ih,FLAG_STD)){
193  sourcIdealIsSB=TRUE;
194  }
195  }
196  else {
197  state=WalkNoIdeal;
198  }
199  }
200 
201  if ( state == WalkOk ) {
202  // Now the settings are compatible with Walk
203  state=fractalWalk64(sourceIdeal,destRing,destIdeal,
204  sourcIdealIsSB,
205  unperturbedStartVectorStrategy);
206  }
207 
208  SI_RESTORE_OPT(save1,save2);//making sure options are as before functiocall
209 
210  if ( state == WalkOk )
211  {
212  ring almostDestRing=currRing;
213  rChangeCurrRing(destRing);
214  destIdeal=idrMoveR(destIdeal, almostDestRing, destRing);
215  }
216 
217 
218  switch (state) {
219 
220  case WalkOk:
221  destIdeal=sortRedSB(destIdeal);
222  return(destIdeal);
223  break;
224 
226  Werror( "ring %s and current ring are incompatible\n",
227  first->Name() );
228  rChangeCurrRing(destRing);
229  destIdeal= NULL;
230  return destIdeal;
231  break;
232 
234  Werror( "Order of basering not allowed,\n must be a combination of lp,dp,Dp,wp,Wp and C or just M.\n");
235  rChangeCurrRing(destRing);
236  destIdeal= NULL;
237  return destIdeal;
238  break;
239 
241  Werror( "Order of %s not allowed,\n must be a combination of lp,dp,Dp,wp,Wp and C or just M.\n",
242  first->Name());
243  rChangeCurrRing(destRing);
244  destIdeal= NULL;
245  return destIdeal;
246  break;
247 
248  case WalkNoIdeal:
249  Werror( "Can't find ideal %s in ring %s.\n",
250  second->Name(), first->Name() );
251  rChangeCurrRing(destRing);
252  destIdeal= NULL;
253  return destIdeal;
254  break;
255 
256  case WalkOverFlowError:
257  Werror( "Overflow occurred in ring %s.\n", first->Name() );
258  rChangeCurrRing(destRing);
259  destIdeal= NULL;
260  return destIdeal;
261  break;
262 
263  default:
264  rChangeCurrRing(destRing);
265  destIdeal= idInit(1,1);
266  return destIdeal;
267  }
268 
269 
270  return NULL;
271 }
int BOOLEAN
Definition: auxiliary.h:87
#define TRUE
Definition: auxiliary.h:100
#define FALSE
Definition: auxiliary.h:96
Definition: idrec.h:35
Class used for (list of) interpreter objects.
Definition: subexpr.h:83
void * data
Definition: subexpr.h:88
const char * Name()
Definition: subexpr.h:120
VAR int myynest
Definition: febase.cc:41
@ IDEAL_CMD
Definition: grammar.cc:284
#define hasFlag(A, F)
Definition: ipid.h:112
#define IDIDEAL(a)
Definition: ipid.h:133
#define IDTYP(a)
Definition: ipid.h:119
#define FLAG_STD
Definition: ipid.h:106
void rSetHdl(idhdl h)
Definition: ipshell.cc:5129
VAR unsigned si_opt_1
Definition: options.c:5
#define SI_SAVE_OPT(A, B)
Definition: options.h:20
#define OPT_REDSB
Definition: options.h:76
#define Sy_bit(x)
Definition: options.h:31
#define SI_RESTORE_OPT(A, B)
Definition: options.h:23
void rChangeCurrRing(ring r)
Definition: polys.cc:15
VAR ring currRing
Widely used global variable which specifies the current polynomial ring for Singular interpreter and ...
Definition: polys.cc:13
ideal idrMoveR(ideal &id, ring src_r, ring dest_r)
Definition: prCopy.cc:247
void Werror(const char *fmt,...)
Definition: reporter.cc:189
idrec * idhdl
Definition: ring.h:21
ideal idInit(int idsize, int rank)
initialise an ideal / module
Definition: simpleideals.cc:35
#define BITSET
Definition: structs.h:16
WalkState fractalWalk64(ideal sourceIdeal, ring destRing, ideal &destIdeal, BOOLEAN sourceIsSB, BOOLEAN unperturbedStartVectorStrategy)
Definition: walkMain.cc:614
@ WalkOverFlowError
Definition: walkMain.h:11
@ WalkNoIdeal
Definition: walkMain.h:8
WalkState fractalWalkConsistency(ring sring, ring dring, int *vperm)
Definition: walkProc.cc:220
ideal sortRedSB(ideal G)

◆ walkConsistency()

WalkState walkConsistency ( ring  sring,
ring  dring,
int *  vperm 
)

Definition at line 53 of file walkProc.cc.

54 {
55  int k;
56  WalkState state= WalkOk;
57 
58  if ( sring->cf != dring->cf )
59  {
60  WerrorS( "rings must have same characteristic" );
61  state= WalkIncompatibleRings;
62  }
63  else if ( (rHasLocalOrMixedOrdering(sring))
64  || (rHasLocalOrMixedOrdering(dring)) )
65  {
66  WerrorS( "only works for global orderings" );
67  state= WalkIncompatibleRings;
68  }
69  else if ( sring->N != dring->N )
70  {
71  WerrorS( "rings must have same number of variables" );
72  state= WalkIncompatibleRings;
73  }
74  else if ( rPar(sring) != rPar(dring) )
75  {
76  WerrorS( "rings must have same number of parameters" );
77  state= WalkIncompatibleRings;
78  }
79 
80  if ( state != WalkOk ) return state;
81  // now the rings have the same number of variables resp. parameters.
82  // check if the names of the variables resp. parameters do agree:
83 
84  int nvar = rVar(sring);
85  int npar = rPar(sring);
86  int * pperm;
87  char **snames;
88  char **dnames;
89  if ( npar > 0 )
90  {
91  snames=sring->cf->extRing->names;
92  dnames=dring->cf->extRing->names;
93  pperm= (int *)omAlloc0( (npar+1)*sizeof( int ) );
94  }
95  else
96  {
97  snames=NULL;
98  dnames=NULL;
99  pperm= NULL;
100  }
101 
102  maFindPerm( sring->names, nvar, snames, npar,
103  dring->names, nvar, dnames, npar, vperm, pperm,
104  dring->cf->type);
105 
106  for ( k= nvar; (k > 0) && (state == WalkOk); k-- )
107  if ( vperm[k] <= 0 )
108  {
109  WerrorS( "variable names do not agree" );
110  state= WalkIncompatibleRings;
111  }
112 
113  for ( k= npar-1; (k >= 0) && (state == WalkOk); k-- )
114  if ( pperm[k] >= 0 )
115  {
116  WerrorS( "parameter names do not agree" );
117  state= WalkIncompatibleRings;
118  }
119 
120  //remove this to if you want to allow permutations of variables
121  for ( k= nvar; (k > 0) && (state == WalkOk); k-- )
122  if ( vperm[k] != (k) )
123  {
124  WerrorS( "orders of variables do not agree" );
125  state= WalkIncompatibleRings;
126  }
127 
128  //remove this to if you want to allow permutations of parameters
129  for ( k= npar; (k > 0) && (state == WalkOk); k-- )
130  {
131  if ( pperm[k-1] != (-k) )
132  {
133  WerrorS( "orders of parameters do not agree" );
134  state= WalkIncompatibleRings;
135  }
136  }
137  if (pperm != NULL)
138  omFreeSize( (ADDRESS)pperm, (npar+1)*sizeof( int ) );
139 
140  if ( state != WalkOk ) return state;
141 
142  // check if any of the rings are qrings or not
143  if ( (sring->qideal != NULL) || (dring->qideal != NULL) )
144  {
145  WerrorS( "rings are not allowed to be qrings");
146  return WalkIncompatibleRings;
147  }
148 
149  int i=0;
150  while(dring->order[i]!=0)
151  {
152  if(
153  !(dring->order[i]==ringorder_a) &&
154  !(dring->order[i]==ringorder_a64) &&
155  !(dring->order[i]==ringorder_lp) &&
156  !(dring->order[i]==ringorder_dp) &&
157  !(dring->order[i]==ringorder_Dp) &&
158  !(dring->order[i]==ringorder_wp) &&
159  !(dring->order[i]==ringorder_Wp) &&
160  !(dring->order[i]==ringorder_C) &&
161  !(dring->order[i]==ringorder_M)
162  )
163  {
165  }
166  i++;
167  }
168 
169  i=0;
170  while(sring->order[i]!=0)
171  {
172  if(
173  !(sring->order[i]==ringorder_a) &&
174  !(sring->order[i]==ringorder_a64) &&
175  !(sring->order[i]==ringorder_lp) &&
176  !(sring->order[i]==ringorder_dp) &&
177  !(sring->order[i]==ringorder_Dp) &&
178  !(sring->order[i]==ringorder_wp) &&
179  !(sring->order[i]==ringorder_Wp) &&
180  !(sring->order[i]==ringorder_C) &&
181  !(sring->order[i]==ringorder_M)
182  )
183  {
185  }
186  i++;
187  }
188 
189  return state;
190 }
@ ringorder_a
Definition: ring.h:70
@ ringorder_a64
for int64 weights
Definition: ring.h:71

◆ walkProc()

ideal walkProc ( leftv  first,
leftv  second 
)

Definition at line 55 of file walk_ip.cc.

56 {
57  WalkState state = WalkOk;
58  BITSET save1,save2;
59  SI_SAVE_OPT(save1,save2);
60  si_opt_1 &= (~Sy_bit(OPT_REDSB)); //make sure option noredSB is set
61 
62  ring destRing = currRing;
63  ideal destIdeal = NULL;
64  idhdl sourceRingHdl = (idhdl)first->data;
65  ring sourceRing = IDRING(sourceRingHdl);
66  rChangeCurrRing( sourceRing );
67 
68  if(state==WalkOk)
69  {
70  int * vperm = (int *)omAlloc0( (currRing->N+1)*sizeof( int ) );
71  state= walkConsistency( sourceRing, destRing, vperm );
72  omFreeSize( (ADDRESS)vperm, (currRing->N+1)*sizeof(int) );
73  }
74 
75  int64vec* currw64=rGetGlobalOrderWeightVec(sourceRing);
76  int64vec* destVec64=rGetGlobalOrderWeightVec(destRing);
77 
78  ideal sourceIdeal;
79  BOOLEAN sourcIdealIsSB=FALSE;
80  if ( state == WalkOk )
81  {
82  idhdl ih = currRing->idroot->get( second->Name(), myynest );
83  if ( (ih != NULL) && (IDTYP(ih)==IDEAL_CMD) )
84  {
85  sourceIdeal = idCopy(IDIDEAL( ih ));
86  if(hasFlag((leftv)ih,FLAG_STD)){
87  sourcIdealIsSB=TRUE;
88  }
89  }
90  else
91  {
92  state=WalkNoIdeal;
93  }
94  }
95 
96  if ( state == WalkOk )
97  {
98  // Now the settings are compatible with Walk
99  state=walk64(sourceIdeal,currw64,destRing,destVec64,
100  destIdeal,sourcIdealIsSB);
101  }
102 
103  SI_RESTORE_OPT(save1,save2);//making sure options are as before function call
104 
105  ring almostDestRing=currRing;
106  rChangeCurrRing(destRing);
107 
108  switch (state) {
109  case WalkOk:
110  destIdeal=idrMoveR(destIdeal,currRing,almostDestRing);
111  break;
112 
114  Werror("ring %s and current ring are incompatible\n",
115  first->Name() );
116  destIdeal= NULL;
117  break;
118 
120  WerrorS( "Order of basering not allowed,\n must be a combination of a,A,lp,dp,Dp,wp,Wp,M and C.\n");
121  destIdeal= NULL;
122  break;
123 
125  Werror( "Order of %s not allowed,\n must be a combination of a,A,lp,dp,Dp,wp,Wp,M and C.\n",first->Name());
126  rChangeCurrRing(destRing);
127  destIdeal= NULL;
128  break;
129 
130  case WalkNoIdeal:
131  Werror( "Can't find ideal %s in ring %s.\n",
132  second->Name(), first->Name() );
133  destIdeal= NULL;
134  break;
135 
136  case WalkOverFlowError:
137  WerrorS( "Overflow occurred.\n");
138  destIdeal= NULL;
139  break;
140 
141  default:
142  destIdeal= NULL;
143  }
144 
145  return destIdeal;
146 }
ideal idCopy(ideal A)
Definition: ideals.h:60
#define IDRING(a)
Definition: ipid.h:127
WalkState walk64(ideal I, int64vec *currw64, ring destRing, int64vec *destVec64, ideal &destIdeal, BOOLEAN sourceIsSB)
Definition: walkMain.cc:222
WalkState walkConsistency(ring sring, ring dring, int *vperm)
Definition: walkProc.cc:53
int64vec * rGetGlobalOrderWeightVec(ring r)