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Diff for /OpenXM/src/kan96xx/Kan/gb.c between version 1.6 and 1.13

version 1.6, 2002/02/10 08:22:56 version 1.13, 2005/07/07 02:59:47
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Line 1 
 /* $OpenXM: OpenXM/src/kan96xx/Kan/gb.c,v 1.5 2001/05/04 01:06:23 takayama Exp $ */  /* $OpenXM: OpenXM/src/kan96xx/Kan/gb.c,v 1.12 2005/06/30 08:35:07 takayama Exp $ */
 /*  untabify on May 4, 2001 */  /*  untabify on May 4, 2001 */
 #include <stdio.h>  #include <stdio.h>
 #include "datatype.h"  #include "datatype.h"
Line 23  extern int UseCriterion2B;
Line 23  extern int UseCriterion2B;
 extern int Spairs;  extern int Spairs;
 extern int Criterion2B, Criterion2F, Criterion2M;  extern int Criterion2B, Criterion2F, Criterion2M;
 extern int AutoReduce;  extern int AutoReduce;
   extern int TraceLift;
   extern struct ring *TraceLift_ringmod;
 static int MaxLength[DMAX];  static int MaxLength[DMAX];
 static int SpNumber[DMAX];  static int SpNumber[DMAX];
   
Line 160  struct gradedPairs *updatePairs(grD,gt,gtGrade,t,grG)
Line 162  struct gradedPairs *updatePairs(grD,gt,gtGrade,t,grG)
   return(grD);    return(grD);
 }  }
   
 struct gradedPolySet *groebner_gen(f,needBack,needSyz,grP,countDown,forceReduction)  struct gradedPolySet *groebner_gen(f,needBack,needSyz,grP,countDown,forceReduction,reduceOnly,gbCheck)
      struct arrayOfPOLY *f;       struct arrayOfPOLY *f;
      int needBack;       int needBack;
      int needSyz;       int needSyz;
      struct pair **grP;  /* if (needSyz), it is set. */       struct pair **grP;  /* if (needSyz), it is set. */
      int countDown;       int countDown;
      int forceReduction;       int forceReduction;
        int reduceOnly;
        int gbCheck;
 {  {
   int r;    int r;
   struct gradedPolySet *g;    struct gradedPolySet *g;
Line 191  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 195  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
   extern int StopDegree;    extern int StopDegree;
   extern struct ring *CurrentRingp;    extern struct ring *CurrentRingp;
   extern char *F_mpMult;    extern char *F_mpMult;
     extern int Homogenize;
   struct ring *rp;    struct ring *rp;
     int first;
   int statisticsPL, statisticsCount;    int statisticsPL, statisticsCount;
   
     if (KanGBmessage) {
           printf("Homogenize=%d, countDown=%d, forceReduction=%d, reduceOnly=%d, gbCheck=%d\n",
                      Homogenize,countDown, forceReduction, reduceOnly, gbCheck);
     }
   if (Statistics) {    if (Statistics) {
     for (i=0; i<DMAX; i++) MaxLength[i] = SpNumber[i] = 0;      for (i=0; i<DMAX; i++) MaxLength[i] = SpNumber[i] = 0;
   }    }
Line 210  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 220  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
   
   Spairs = Criterion1 = Criterion2B = Criterion2F = Criterion2M = 0;    Spairs = Criterion1 = Criterion2B = Criterion2F = Criterion2M = 0;
   
   g = newGradedPolySet(INITGRADE);    g = newGradedPolySet(INITGRADE); g->gb = 1;
     if (reduceOnly) g->gb = 2; /* unknown */
   d = newGradedPairs(INITGRADE*2);    d = newGradedPairs(INITGRADE*2);
   for (i=0; i<g->lim; i++) {    for (i=0; i<g->lim; i++) {
     g->polys[i] = newPolySet(INITSIZE);      g->polys[i] = newPolySet(INITSIZE);
   }    }
   
     first = 1;
   for (i=0; i<r; i++) {    for (i=0; i<r; i++) {
     gt = getArrayOfPOLY(f,i);      gt = getArrayOfPOLY(f,i);
     if (gt ISZERO) { rp = CurrentRingp; } else { rp = gt->m->ringp; }      if (gt ISZERO) { rp = CurrentRingp; } else { rp = gt->m->ringp; }
           if (TraceLift && (!(gt ISZERO)) && first) {
             TraceLift_ringmod = newRingOverFp(rp,getPrime(TraceLift)); first = 0;
             if (KanGBmessage) printf("Prime number for the trace lift is %d.\n",
                                                              TraceLift_ringmod->p);
           }
     grade = -1; whereInG(g,gt,&grade,&indx,Sugar);      grade = -1; whereInG(g,gt,&grade,&indx,Sugar);
     if (KanGBmessage == 2) {      if (KanGBmessage == 2) {
       printf("init=%s, ",POLYToString(head(gt),'*',1));        printf("init=%s, ",POLYToString(head(gt),'*',1));
Line 236  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 253  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
       g = putPolyInG(g,gt,grade,indx,syzp,1,serial);        g = putPolyInG(g,gt,grade,indx,syzp,1,serial);
     }      }
   
     markRedundant0(g,grade,indx);      /* markRedundant0(g,grade,indx); ?*/
           markGeneratorInG(g,grade,indx);  /*?*/
     if (Debug) {      if (Debug) {
       outputGradedPairs(d); outputGradedPolySet(g,needSyz);        outputGradedPairs(d); outputGradedPolySet(g,needSyz);
     }      }
Line 249  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 267  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
   while ((top = getPair(d)) != (struct pair *)NULL) {    while ((top = getPair(d)) != (struct pair *)NULL) {
     ig = top->ig; ii = top->ii; /* [ig,ii] */      ig = top->ig; ii = top->ii; /* [ig,ii] */
     jg = top->jg; ji = top->ji; /* [jg,ji] */      jg = top->jg; ji = top->ji; /* [jg,ji] */
           /*
       if (g->polys[ig]->del[ii] || g->polys[jg]->del[ji]) {
         if (KanGBmessage) printf("p");
         continue;
       }  Don't do this.
           */
     gi = g->polys[ig]->g[ii];      gi = g->polys[ig]->g[ii];
     gj = g->polys[jg]->g[ji];      gj = g->polys[jg]->g[ji];
   
     Spairs++;      Spairs++;
     h = (*sp)(gi,gj);          if (reduceOnly && (!needSyz) && (!needBack)) h = spZero(); /* rd = 0 */
           else h = (*sp)(gi,gj);
     rd = ppAddv(ppMult(h.a,gi),ppMult(h.b,gj));      rd = ppAddv(ppMult(h.a,gi),ppMult(h.b,gj));
   
     if (Statistics) {      if (Statistics) {
Line 298  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 323  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
     }      }
   
     if (!(rd ISZERO)) {      if (!(rd ISZERO)) {
         if (gbCheck) {
                   /* Abort the calculation. */
                   g->gb = 0;
                   if (KanGBmessage) {
                     printf("gbCheck failed. \n");
                     printf("Note that the result is NOT groebner basis.\n");
                   }
                   break;
         }
       if (needBack || needSyz) {        if (needBack || needSyz) {
         syzp = newSyz0();          syzp = newSyz0();
         syzp->cf = syzCf; /* no meaning */          syzp->cf = syzCf; /* no meaning */
Line 337  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 371  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
           if (countDown == 0) {            if (countDown == 0) {
             printf("\nThe computation of the Groebner basis is suspended because of countDown==0.\n");              printf("\nThe computation of the Groebner basis is suspended because of countDown==0.\n");
             printf("Note that the result is NOT groebner basis.\n");              printf("Note that the result is NOT groebner basis.\n");
               g->gb = 0;
             break;              break;
           }            }
         }          }
Line 358  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 393  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
         printf("Computation of the Groebner basis is suspended bacause of StopDegree < computing grade.\n");          printf("Computation of the Groebner basis is suspended bacause of StopDegree < computing grade.\n");
         printf("Note that the result is NOT groebner basis.\n");          printf("Note that the result is NOT groebner basis.\n");
       }        }
         g->gb = 0;
       break;        break;
     }      }
   }    }
Line 393  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
Line 429  struct gradedPolySet *groebner_gen(f,needBack,needSyz,
     printf("\n");      printf("\n");
   }    }
   
   if (AutoReduce) {    if (AutoReduce || reduceOnly) {
     toReducedBasis(g,needBack,needSyz);      toReducedBasis(g,needBack,needSyz);
   }    }
   
Line 490  void toReducedBasis(struct gradedPolySet *grP,int need
Line 526  void toReducedBasis(struct gradedPolySet *grP,int need
   if (KanGBmessage) {    if (KanGBmessage) {
     printf("Done(reduced basis)\n");      printf("Done(reduced basis)\n");
   }    }
     grP->reduced = 1;
 }  }
   
   
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  Added in v.1.13
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