version 1.9, 2003/08/20 01:39:17 |
version 1.10, 2003/08/20 05:18:35 |
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/* $OpenXM: OpenXM/src/kan96xx/Kan/ecart.c,v 1.8 2003/08/19 08:02:09 takayama Exp $ */ |
/* $OpenXM: OpenXM/src/kan96xx/Kan/ecart.c,v 1.9 2003/08/20 01:39:17 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 |
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Line 36 static POLY reduction_ecart1(POLY r,struct gradedPolyS |
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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); |
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static int shouldReduceContent(POLY f,int ss); |
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extern int DebugReductionRed; |
extern int DebugReductionRed; |
extern int TraceLift; |
extern int TraceLift; |
Line 422 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
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Line 423 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
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r = goHomogenize11(r,DegreeShifto_vec,DegreeShifto_size,-1,1); |
r = goHomogenize11(r,DegreeShifto_vec,DegreeShifto_size,-1,1); |
/* 1 means homogenize only s */ |
/* 1 means homogenize only s */ |
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if (DoCancel && (r != POLYNULL)) shouldReduceContent(r,1); |
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if (DebugReductionEcart&1) printf("=======================================\n"); |
if (DebugReductionEcart&1) printf("=======================================\n"); |
do { |
do { |
Line 443 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
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Line 445 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
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} |
} |
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); |
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if (DoCancel && (r != POLYNULL)) { /* BUG: syzygy should be corrected. */ |
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if (shouldReduceContent(r,0)) { |
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r = reduceContentOfPoly(r,&cont); |
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shouldReduceContent(r,1); |
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if (DebugReductionEcart || DebugReductionRed) printf("CONT=%d ",coeffToString(cont)); |
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} |
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} |
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if (needSyz) { |
if (needSyz) { |
if (ells.first) { |
if (ells.first) { |
cf = ppMult(cc,cf); |
cf = ppMult(cc,cf); |
Line 470 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
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Line 481 static POLY reduction_ecart1(r,gset,needSyz,syzp) |
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r = goDeHomogenizeS(r); |
r = goDeHomogenizeS(r); |
if (DoCancel && (r != POLYNULL)) { /* BUG: syzygy should be corrected. */ |
if (DoCancel && (r != POLYNULL)) { /* BUG: syzygy should be corrected. */ |
if (r->m->ringp->p == 0) { |
if (r->m->ringp->p == 0) { |
if (coeffSizeMin(r) >= DoCancel) { |
if (coeffSizeMin(r) >= DoCancel) { |
r = reduceContentOfPoly(r,&cont); |
r = reduceContentOfPoly(r,&cont); |
if (DebugReductionEcart || DebugReductionRed) printf("cont=%d ",coeffToString(cont)); |
if (DebugReductionEcart || DebugReductionRed) printf("cont=%d ",coeffToString(cont)); |
} |
} |
} |
} |
} |
} |
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return(r); |
return(r); |
Line 624 static POLY reduction_ecart1_mod(r,gset) |
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Line 635 static POLY reduction_ecart1_mod(r,gset) |
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r = goDeHomogenizeS(r); |
r = goDeHomogenizeS(r); |
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return(r); |
return(r); |
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} |
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static int shouldReduceContent(POLY f,int ss) { |
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static int prevSize = 1; |
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int size; |
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if (f == POLYNULL) return 0; |
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if (f->m->ringp->p != 0) return 0; |
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if (f->coeffp->tag != MP_INTEGER) return 0; |
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size = mpz_size(f->coeffp->val.bigp); |
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if (ss > 0) { |
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prevSize = size; |
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return 0; |
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} |
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if (size > 2*prevSize) { |
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return 1; |
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}else{ |
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return 0; |
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} |
} |
} |