version 1.10, 2003/08/20 05:18:35 |
version 1.13, 2003/08/22 01:02:45 |
|
|
/* $OpenXM: OpenXM/src/kan96xx/Kan/ecart.c,v 1.9 2003/08/20 01:39:17 takayama Exp $ */ |
/* $OpenXM: OpenXM/src/kan96xx/Kan/ecart.c,v 1.12 2003/08/21 12:28:57 takayama Exp $ */ |
#include <stdio.h> |
#include <stdio.h> |
#include "datatype.h" |
#include "datatype.h" |
#include "extern2.h" |
#include "extern2.h" |
Line 36 static POLY reduction_ecart1(POLY r,struct gradedPolyS |
|
Line 36 static POLY reduction_ecart1(POLY r,struct gradedPolyS |
|
static POLY reduction_ecart1_mod(POLY r,struct gradedPolySet *gset); |
static POLY reduction_ecart1_mod(POLY r,struct gradedPolySet *gset); |
static POLY ecartCheckSyz0(POLY cf,POLY r_0,POLY syz, |
static POLY ecartCheckSyz0(POLY cf,POLY r_0,POLY syz, |
struct gradedPolySet *gg,POLY r); |
struct gradedPolySet *gg,POLY r); |
static int shouldReduceContent(POLY f,int ss); |
|
|
|
extern int DebugReductionRed; |
extern int DebugReductionRed; |
extern int TraceLift; |
extern int TraceLift; |
struct ring *TraceLift_ringmod; |
struct ring *TraceLift_ringmod; |
extern DoCancel; |
extern DoCancel; |
int DebugReductionEcart = 0; |
int DebugReductionEcart = 0; |
|
extern DebugContentReduction; |
|
|
/* This is used for goHomogenization */ |
/* This is used for goHomogenization */ |
extern int DegreeShifto_size; |
extern int DegreeShifto_size; |
Line 248 POLY reduction_ecart(r,gset,needSyz,syzp) |
|
Line 248 POLY reduction_ecart(r,gset,needSyz,syzp) |
|
struct syz0 *syzp; /* set */ |
struct syz0 *syzp; /* set */ |
{ |
{ |
POLY rn; |
POLY rn; |
|
if (TraceLift && needSyz) { |
|
warningGradedSet("TraceLift cannot be used to get syzygy. TraceLift is turned off.\n"); |
|
TraceLift = 0; |
|
} |
if (TraceLift) { |
if (TraceLift) { |
if (EcartAutomaticHomogenization) { |
if (EcartAutomaticHomogenization) { |
if (TraceLift_ringmod == NULL) { |
if (TraceLift_ringmod == NULL) { |
warningPoly("reduction_ecart: TraceLift_ringmod is not set.\n"); |
warningPoly("reduction_ecart: TraceLift_ringmod is not set.\n"); |
return reduction_ecart1(r,gset,needSyz,syzp); |
return reduction_ecart1(r,gset,needSyz,syzp); |
} |
} |
rn = reduction_ecart1_mod(r,gset); /* BUG: syzygy is not obtained. */ |
rn = reduction_ecart1_mod(r,gset); |
if (rn == POLYNULL) return rn; |
if (rn == POLYNULL) return rn; |
else return reduction_ecart1(r,gset,needSyz,syzp); |
else return reduction_ecart1(r,gset,needSyz,syzp); |
}else{ |
}else{ |
Line 400 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
Line 404 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
struct ecartPolyArray *gg; |
struct ecartPolyArray *gg; |
POLY pp; |
POLY pp; |
int ell; |
int ell; |
|
POLY cf_o; |
|
POLY syz_o; |
|
POLY r_0; |
int se; |
int se; |
struct coeff *cont; |
struct coeff *cont; |
|
|
Line 407 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
Line 414 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
struct ring *rp; |
struct ring *rp; |
extern struct ring *SmallRingp; |
extern struct ring *SmallRingp; |
|
|
|
r_0 = r; |
gg = NULL; |
gg = NULL; |
if (needSyz) { |
if (needSyz) { |
if (r ISZERO) { rp = CurrentRingp; } else { rp = r->m->ringp; } |
if (r ISZERO) { rp = CurrentRingp; } else { rp = r->m->ringp; } |
Line 434 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
Line 442 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
ell = ells.ell; |
ell = ells.ell; |
if (ell > 0) { |
if (ell > 0) { |
if (DebugReductionEcart & 2) printf("%"); |
if (DebugReductionEcart & 2) printf("%"); |
gg = ecartPutPolyInG(r,gg,POLYNULL,POLYNULL); |
if (needSyz) { |
|
gg = ecartPutPolyInG(r,gg,cf,syz); |
|
}else{ |
|
gg = ecartPutPolyInG(r,gg,POLYNULL,POLYNULL); |
|
} |
} |
} |
if (ell >= 0) { |
if (ell >= 0) { |
if (ells.first) { |
if (ells.first) { |
Line 446 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
Line 458 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
if (ell > 0) r = mpMult(cxx(1,0,ell,rp),r); /* r = s^ell r */ |
if (ell > 0) r = mpMult(cxx(1,0,ell,rp),r); /* r = s^ell r */ |
r = (*reduction1)(r,pp,needSyz,&cc,&cg); |
r = (*reduction1)(r,pp,needSyz,&cc,&cg); |
|
|
if (DoCancel && (r != POLYNULL)) { /* BUG: syzygy should be corrected. */ |
if (DoCancel && (r != POLYNULL)) { |
if (shouldReduceContent(r,0)) { |
if (shouldReduceContent(r,0)) { |
r = reduceContentOfPoly(r,&cont); |
r = reduceContentOfPoly(r,&cont); |
shouldReduceContent(r,1); |
shouldReduceContent(r,1); |
if (DebugReductionEcart || DebugReductionRed) printf("CONT=%d ",coeffToString(cont)); |
if (DebugReductionEcart || DebugReductionRed || DebugContentReduction) printf("CONT=%s ",coeffToString(cont)); |
} |
} |
} |
} |
|
|
if (needSyz) { |
if (needSyz) { |
if (ells.first) { |
if (ells.first) { |
|
if (ell > 0) cc = ppMult(cc,cxx(1,0,ell,rp)); |
cf = ppMult(cc,cf); |
cf = ppMult(cc,cf); |
syz = cpMult(toSyzCoeff(cc),syz); |
syz = cpMult(toSyzCoeff(cc),syz); |
syz = ppAddv(syz,toSyzPoly(cg,ells.grade,ells.gseti)); |
syz = ppAddv(syz,toSyzPoly(cg,ells.grade,ells.gseti)); |
}else{ |
}else{ |
fprintf(stderr,"It has not yet implemented.\n"); |
if (ell >0) cc = ppMult(cc,cxx(1,0,ell,rp)); |
exit(10); |
cf_o = (gg->cf)[ells.ggi]; |
/* BUG: not yet */ |
syz_o = (gg->syz)[ells.ggi]; |
|
cf = ppMult(cc,cf); |
|
cf = ppAdd(cf,ppMult(cg,cf_o)); |
|
syz = cpMult(toSyzCoeff(cc),syz); |
|
syz = ppAdd(syz,cpMult(toSyzCoeff(cg),syz_o)); |
|
/* Note. 2003.07.19 */ |
} |
} |
} |
} |
|
|
|
if (DebugReductionRed) { |
|
POLY tp; |
|
tp = ecartCheckSyz0(cf,r_0,syz,gset,r); |
|
tp = goDeHomogenizeS(tp); |
|
if (tp != POLYNULL) { |
|
fprintf(stderr,"reduction_ecart1(): sygyzy is broken. Return the Current values.\n"); |
|
fprintf(stderr,"%s\n",POLYToString(tp,'*',1)); |
|
syzp->cf = cf; |
|
syzp->syz = syz; |
|
return r; |
|
} |
|
} |
|
|
if (r ISZERO) goto ss1; |
if (r ISZERO) goto ss1; |
r = ecartDivideSv(r,&se); /* r = r/s^? */ |
r = ecartDivideSv(r,&se); /* r = r/s^? */ |
} |
} |
Line 472 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
Line 504 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
|
|
|
ss1: ; |
ss1: ; |
if (needSyz) { |
if (needSyz) { |
|
/* dehomogenize the syzygy. BUG, this may be inefficient. */ |
|
cf = goDeHomogenizeS(cf); |
|
syz = goDeHomogenizeS(syz); |
|
/*printf("cf=%s\n",POLYToString(cf,'*',1)); |
|
printf("syz=%s\n",POLYToString(syz,'*',1));*/ |
syzp->cf = cf; /* cf is in the CurrentRingp */ |
syzp->cf = cf; /* cf is in the CurrentRingp */ |
syzp->syz = syz; /* syz is in the SyzRingp */ |
syzp->syz = syz; /* syz is in the SyzRingp */ |
/* BUG: dehomogenize the syzygy */ |
|
fprintf(stderr,"It has not yet implemented.\n"); |
|
exit(10); |
|
} |
} |
|
|
r = goDeHomogenizeS(r); |
r = goDeHomogenizeS(r); |
if (DoCancel && (r != POLYNULL)) { /* BUG: syzygy should be corrected. */ |
if (DoCancel && (r != POLYNULL)) { |
if (r->m->ringp->p == 0) { |
if (r->m->ringp->p == 0) { |
if (coeffSizeMin(r) >= DoCancel) { |
r = reduceContentOfPoly(r,&cont); |
r = reduceContentOfPoly(r,&cont); |
if (DebugReductionEcart || DebugReductionRed || DebugContentReduction) printf("cont=%s ",coeffToString(cont)); |
if (DebugReductionEcart || DebugReductionRed) printf("cont=%d ",coeffToString(cont)); |
|
} |
|
} |
} |
} |
} |
|
|
Line 637 static POLY reduction_ecart1_mod(r,gset) |
|
Line 669 static POLY reduction_ecart1_mod(r,gset) |
|
return(r); |
return(r); |
} |
} |
|
|
static int shouldReduceContent(POLY f,int ss) { |
|
static int prevSize = 1; |
|
int size; |
|
if (f == POLYNULL) return 0; |
|
if (f->m->ringp->p != 0) return 0; |
|
if (f->coeffp->tag != MP_INTEGER) return 0; |
|
size = mpz_size(f->coeffp->val.bigp); |
|
if (ss > 0) { |
|
prevSize = size; |
|
return 0; |
|
} |
|
if (size > 2*prevSize) { |
|
return 1; |
|
}else{ |
|
return 0; |
|
} |
|
} |
|