=================================================================== RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/dp-supp.c,v retrieving revision 1.1.1.1 retrieving revision 1.35 diff -u -p -r1.1.1.1 -r1.35 --- OpenXM_contrib2/asir2000/builtin/dp-supp.c 1999/12/03 07:39:07 1.1.1.1 +++ OpenXM_contrib2/asir2000/builtin/dp-supp.c 2004/05/14 06:02:54 1.35 @@ -1,206 +1,126 @@ -/* $OpenXM: OpenXM/src/asir99/builtin/dp-supp.c,v 1.2 1999/11/18 05:42:01 noro Exp $ */ +/* + * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED + * All rights reserved. + * + * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited, + * non-exclusive and royalty-free license to use, copy, modify and + * redistribute, solely for non-commercial and non-profit purposes, the + * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and + * conditions of this Agreement. For the avoidance of doubt, you acquire + * only a limited right to use the SOFTWARE hereunder, and FLL or any + * third party developer retains all rights, including but not limited to + * copyrights, in and to the SOFTWARE. + * + * (1) FLL does not grant you a license in any way for commercial + * purposes. You may use the SOFTWARE only for non-commercial and + * non-profit purposes only, such as academic, research and internal + * business use. + * (2) The SOFTWARE is protected by the Copyright Law of Japan and + * international copyright treaties. If you make copies of the SOFTWARE, + * with or without modification, as permitted hereunder, you shall affix + * to all such copies of the SOFTWARE the above copyright notice. + * (3) An explicit reference to this SOFTWARE and its copyright owner + * shall be made on your publication or presentation in any form of the + * results obtained by use of the SOFTWARE. + * (4) In the event that you modify the SOFTWARE, you shall notify FLL by + * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification + * for such modification or the source code of the modified part of the + * SOFTWARE. + * + * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL + * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND + * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS + * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES' + * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY + * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY. + * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT, + * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL + * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES + * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES + * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY + * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF + * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART + * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY + * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, + * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. + * + * $OpenXM: OpenXM_contrib2/asir2000/builtin/dp-supp.c,v 1.34 2004/04/22 07:52:38 noro Exp $ +*/ #include "ca.h" #include "base.h" +#include "inline.h" #include "parse.h" #include "ox.h" +#define HMAG(p) (p_mag(BDY(p)->c)) + extern int (*cmpdl)(); -double pz_t_e,pz_t_d,pz_t_d1,pz_t_c; +extern double pz_t_e,pz_t_d,pz_t_d1,pz_t_c; +extern int dp_nelim,dp_fcoeffs; +extern int NoGCD; +extern int GenTrace; +extern NODE TraceList; -void Pdp_mbase(),Pdp_lnf_mod(),Pdp_nf_tab_mod(),Pdp_mdtod(); -void Pdp_vtoe(), Pdp_etov(), Pdp_dtov(), Pdp_idiv(), Pdp_sep(); -void Pdp_cont(), Pdp_igcdv_hist(), Pdp_idivv_hist(); +/* + * content reduction + * + */ -struct ftab dp_supp_tab[] = { - {"dp_mbase",Pdp_mbase,1}, - {"dp_lnf_mod",Pdp_lnf_mod,3}, - {"dp_nf_tab_mod",Pdp_nf_tab_mod,3}, - {"dp_etov",Pdp_etov,1}, - {"dp_vtoe",Pdp_vtoe,1}, - {"dp_dtov",Pdp_dtov,1}, - {"dp_idiv",Pdp_idiv,2}, - {"dp_cont",Pdp_cont,1}, - {"dp_sep",Pdp_sep,2}, - {"dp_mdtod",Pdp_mdtod,1}, - {"dp_igcdv_hist",Pdp_igcdv_hist,1}, - {"dp_idivv_hist",Pdp_idivv_hist,1}, - {0,0,0} -}; - -void Pdp_mdtod(arg,rp) -NODE arg; -DP *rp; +void dp_ptozp(DP p,DP *rp) { MP m,mr,mr0; - DP p; + int i,n; + Q *w; + Q dvr; P t; - p = (DP)ARG0(arg); if ( !p ) *rp = 0; else { + for ( m =BDY(p), n = 0; m; m = NEXT(m), n++ ); + w = (Q *)ALLOCA(n*sizeof(Q)); + for ( m =BDY(p), i = 0; i < n; m = NEXT(m), i++ ) + if ( NUM(m->c) ) + w[i] = (Q)m->c; + else + ptozp(m->c,1,&w[i],&t); + sortbynm(w,n); + qltozl(w,n,&dvr); for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { - mptop(m->c,&t); NEXTMP(mr0,mr); mr->c = t; mr->dl = m->dl; + NEXTMP(mr0,mr); divsp(CO,m->c,(P)dvr,&mr->c); mr->dl = m->dl; } NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; } } -void Pdp_sep(arg,rp) -NODE arg; -VECT *rp; +void dp_ptozp2(DP p0,DP p1,DP *hp,DP *rp) { - DP p,r; - MP m,t; - MP *w0,*w; - int i,n,d,nv,sugar; - VECT v; - pointer *pv; + DP t,s,h,r; + MP m,mr,mr0,m0; - p = (DP)ARG0(arg); m = BDY(p); - d = QTOS((Q)ARG1(arg)); - for ( t = m, n = 0; t; t = NEXT(t), n++ ); - if ( d > n ) - d = n; - MKVECT(v,d); *rp = v; - pv = BDY(v); nv = p->nv; sugar = p->sugar; - w0 = (MP *)MALLOC(d*sizeof(MP)); bzero(w0,d*sizeof(MP)); - w = (MP *)MALLOC(d*sizeof(MP)); bzero(w,d*sizeof(MP)); - for ( t = BDY(p), i = 0; t; t = NEXT(t), i++, i %= d ) { - NEXTMP(w0[i],w[i]); w[i]->c = t->c; w[i]->dl = t->dl; + addd(CO,p0,p1,&t); dp_ptozp(t,&s); + if ( !p0 ) { + h = 0; r = s; + } else if ( !p1 ) { + h = s; r = 0; + } else { + for ( mr0 = 0, m = BDY(s), m0 = BDY(p0); m0; + m = NEXT(m), m0 = NEXT(m0) ) { + NEXTMP(mr0,mr); mr->c = m->c; mr->dl = m->dl; + } + NEXT(mr) = 0; MKDP(p0->nv,mr0,h); MKDP(p0->nv,m,r); } - for ( i = 0; i < d; i++ ) { - NEXT(w[i]) = 0; MKDP(nv,w0[i],r); r->sugar = sugar; - pv[i] = (pointer)r; - } + if ( h ) + h->sugar = p0->sugar; + if ( r ) + r->sugar = p1->sugar; + *hp = h; *rp = r; } -void Pdp_idiv(arg,rp) -NODE arg; -DP *rp; +void dp_idiv(DP p,Q c,DP *rp) { - dp_idiv((DP)ARG0(arg),(Q)ARG1(arg),rp); -} - -void Pdp_cont(arg,rp) -NODE arg; -Q *rp; -{ - dp_cont((DP)ARG0(arg),rp); -} - -void Pdp_dtov(arg,rp) -NODE arg; -VECT *rp; -{ - dp_dtov((DP)ARG0(arg),rp); -} - -void Pdp_mbase(arg,rp) -NODE arg; -LIST *rp; -{ - NODE mb; - - asir_assert(ARG0(arg),O_LIST,"dp_mbase"); - dp_mbase(BDY((LIST)ARG0(arg)),&mb); - MKLIST(*rp,mb); -} - -void Pdp_etov(arg,rp) -NODE arg; -VECT *rp; -{ - DP dp; - int n,i; - int *d; - VECT v; Q t; - - dp = (DP)ARG0(arg); - asir_assert(dp,O_DP,"dp_etov"); - n = dp->nv; d = BDY(dp)->dl->d; - MKVECT(v,n); - for ( i = 0; i < n; i++ ) { - STOQ(d[i],t); v->body[i] = (pointer)t; - } - *rp = v; -} - -void Pdp_vtoe(arg,rp) -NODE arg; -DP *rp; -{ - DP dp; - DL dl; - MP m; - int n,i,td; - int *d; - VECT v; - - v = (VECT)ARG0(arg); - asir_assert(v,O_VECT,"dp_vtoe"); - n = v->len; - NEWDL(dl,n); d = dl->d; - for ( i = 0, td = 0; i < n; i++ ) { - d[i] = QTOS((Q)(v->body[i])); td += d[i]; - } - dl->td = td; - NEWMP(m); m->dl = dl; m->c = (P)ONE; NEXT(m) = 0; - MKDP(n,m,dp); dp->sugar = td; - *rp = dp; -} - -void Pdp_lnf_mod(arg,rp) -NODE arg; -LIST *rp; -{ - DP r1,r2; - NODE b,g,n; - int mod; - - asir_assert(ARG0(arg),O_LIST,"dp_lnf_mod"); - asir_assert(ARG1(arg),O_LIST,"dp_lnf_mod"); - asir_assert(ARG2(arg),O_N,"dp_lnf_mod"); - b = BDY((LIST)ARG0(arg)); g = BDY((LIST)ARG1(arg)); - mod = QTOS((Q)ARG2(arg)); - dp_lnf_mod((DP)BDY(b),(DP)BDY(NEXT(b)),g,mod,&r1,&r2); - NEWNODE(n); BDY(n) = (pointer)r1; - NEWNODE(NEXT(n)); BDY(NEXT(n)) = (pointer)r2; - NEXT(NEXT(n)) = 0; MKLIST(*rp,n); -} - -void Pdp_nf_tab_mod(arg,rp) -NODE arg; -DP *rp; -{ - asir_assert(ARG0(arg),O_DP,"dp_nf_tab_mod"); - asir_assert(ARG1(arg),O_VECT,"dp_nf_tab_mod"); - asir_assert(ARG2(arg),O_N,"dp_nf_tab_mod"); - dp_nf_tab_mod((DP)ARG0(arg),(LIST *)BDY((VECT)ARG1(arg)), - QTOS((Q)ARG2(arg)),rp); -} - -void Pdp_igcdv_hist(arg,rp) -NODE arg; -Q *rp; -{ - dp_igcdv_hist((DP)ARG0(arg),rp); -} - -void Pdp_idivv_hist(arg,rp) -NODE arg; -DP *rp; -{ - dp_idivv_hist((Q)ARG0(arg),rp); -} - -void dp_idiv(p,c,rp) -DP p; -Q c; -DP *rp; -{ - Q t; N nm,q; int sgn,s; MP mr0,m,mr; @@ -228,36 +148,8 @@ DP *rp; } } -void dp_cont(p,rp) -DP p; -Q *rp; +void dp_mbase(NODE hlist,NODE *mbase) { - VECT v; - - dp_dtov(p,&v); igcdv(v,rp); -} - -void dp_dtov(dp,rp) -DP dp; -VECT *rp; -{ - MP m,t; - int i,n; - VECT v; - pointer *p; - - m = BDY(dp); - for ( t = m, n = 0; t; t = NEXT(t), n++ ); - MKVECT(v,n); - for ( i = 0, p = BDY(v), t = m; i < n; t = NEXT(t), i++ ) - p[i] = (pointer)(t->c); - *rp = v; -} - -void dp_mbase(hlist,mbase) -NODE hlist; -NODE *mbase; -{ DL *dl; DL d; int i,j,n,nvar,td; @@ -270,7 +162,8 @@ NODE *mbase; while ( 1 ) { insert_to_node(d,mbase,nvar); for ( i = nvar-1; i >= 0; ) { - d->d[i]++; d->td++; + d->d[i]++; + d->td += MUL_WEIGHT(1,i); for ( j = 0; j < n; j++ ) { if ( _dl_redble(dl[j],d,nvar) ) break; @@ -279,7 +172,7 @@ NODE *mbase; for ( j = nvar-1; j >= i; j-- ) d->d[j] = 0; for ( j = 0, td = 0; j < i; j++ ) - td += d->d[j]; + td += MUL_WEIGHT(d->d[j],j); d->td = td; i--; } else @@ -290,9 +183,7 @@ NODE *mbase; } } -int _dl_redble(d1,d2,nvar) -DL d1,d2; -int nvar; +int _dl_redble(DL d1,DL d2,int nvar) { int i; @@ -307,10 +198,7 @@ int nvar; return 1; } -void insert_to_node(d,n,nvar) -DL d; -NODE *n; -int nvar; +void insert_to_node(DL d,NODE *n,int nvar) { DL d1; MP m; @@ -339,200 +227,8 @@ int nvar; } } -void dp_lnf_mod(p1,p2,g,mod,r1p,r2p) -DP p1,p2; -NODE g; -int mod; -DP *r1p,*r2p; +void dp_vtod(Q *c,DP p,DP *rp) { - DP r1,r2,b1,b2,t,s; - P c; - MQ c1,c2; - NODE l,b; - int n; - - if ( !p1 ) { - *r1p = p1; *r2p = p2; return; - } - n = p1->nv; - for ( l = g, r1 = p1, r2 = p2; l; l = NEXT(l) ) { - if ( !r1 ) { - *r1p = r1; *r2p = r2; return; - } - b = BDY((LIST)BDY(l)); b1 = (DP)BDY(b); - if ( dl_equal(n,BDY(r1)->dl,BDY(b1)->dl) ) { - b2 = (DP)BDY(NEXT(b)); - invmq(mod,(MQ)BDY(b1)->c,&c1); - mulmq(mod,c1,(MQ)BDY(r1)->c,&c2); chsgnmp(mod,(P)c2,&c); - mulmdc(CO,mod,b1,c,&t); addmd(CO,mod,r1,t,&s); r1 = s; - mulmdc(CO,mod,b2,c,&t); addmd(CO,mod,r2,t,&s); r2 = s; - } - } - *r1p = r1; *r2p = r2; -} - -void dp_nf_tab_mod(p,tab,mod,rp) -DP p; -LIST *tab; -int mod; -DP *rp; -{ - DP s,t,u; - MP m; - DL h; - int i,n; - - if ( !p ) { - *rp = p; return; - } - n = p->nv; - for ( s = 0, i = 0, m = BDY(p); m; m = NEXT(m) ) { - h = m->dl; - while ( !dl_equal(n,h,BDY((DP)BDY(BDY(tab[i])))->dl ) ) - i++; - mulmdc(CO,mod,(DP)BDY(NEXT(BDY(tab[i]))),m->c,&t); - addmd(CO,mod,s,t,&u); s = u; - } - *rp = s; -} - -void dp_ptozp(p,rp) -DP p,*rp; -{ - MP m,mr,mr0; - int i,n; - Q *w; - Q dvr; - P t; - - if ( !p ) - *rp = 0; - else { - for ( m =BDY(p), n = 0; m; m = NEXT(m), n++ ); - w = (Q *)ALLOCA(n*sizeof(Q)); - for ( m =BDY(p), i = 0; i < n; m = NEXT(m), i++ ) - if ( NUM(m->c) ) - w[i] = (Q)m->c; - else - ptozp(m->c,1,&w[i],&t); - sortbynm(w,n); - qltozl(w,n,&dvr); - for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { - NEXTMP(mr0,mr); divsp(CO,m->c,(P)dvr,&mr->c); mr->dl = m->dl; - } - NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; - } -} - -void dp_ptozp2(p0,p1,hp,rp) -DP p0,p1; -DP *hp,*rp; -{ - DP t,s,h,r; - MP m,mr,mr0,m0; - - addd(CO,p0,p1,&t); dp_ptozp(t,&s); - if ( !p0 ) { - h = 0; r = s; - } else if ( !p1 ) { - h = s; r = 0; - } else { - for ( mr0 = 0, m = BDY(s), m0 = BDY(p0); m0; - m = NEXT(m), m0 = NEXT(m0) ) { - NEXTMP(mr0,mr); mr->c = m->c; mr->dl = m->dl; - } - NEXT(mr) = 0; MKDP(p0->nv,mr0,h); MKDP(p0->nv,m,r); - } - if ( h ) - h->sugar = p0->sugar; - if ( r ) - r->sugar = p1->sugar; - *hp = h; *rp = r; -} - -struct igcdv_hist { - int len; - DP dp; - Q d,d1; - Q *q,*q1; -}; - -static struct igcdv_hist current_igcdv_hist; - -void dp_igcdv_hist(p,rp) -DP p; -Q *rp; -{ - VECT c; - Q *a,*q,*r,*q1,*r1; - int i,n,nz; - Q d,d1; - N qn,rn,gn; - struct oVECT v; - - dp_dtov(p,&c); a = (Q *)c->body; - n = c->len; - q = (Q *)MALLOC(n*sizeof(Q)); r = (Q *)MALLOC(n*sizeof(Q)); - igcdv_estimate(c,&d); - for ( i = 0, nz = 0; i < n; i++ ) { - divn(NM(a[i]),NM(d),&qn,&rn); - NTOQ(qn,SGN(a[i]),q[i]); NTOQ(rn,SGN(a[i]),r[i]); - if ( r[i] ) - nz = 1; - } - current_igcdv_hist.len = n; - current_igcdv_hist.dp = p; - current_igcdv_hist.d = d; - current_igcdv_hist.q = q; - if ( nz ) { - v.id = O_VECT; v.len = n; v.body = (pointer *)r; - igcdv(&v,&d1); - q1 = (Q *)MALLOC(n*sizeof(Q)); r1 = (Q *)MALLOC(n*sizeof(Q)); - for ( i = 0; i < n; i++ ) { - if ( r[i] ) - divn(NM(r[i]),NM(d1),&qn,&rn); - else { - qn = rn = 0; - } - NTOQ(qn,SGN(r[i]),q1[i]); NTOQ(rn,SGN(r[i]),r1[i]); - } - gcdn(NM(d),NM(d1),&gn); NTOQ(gn,1,*rp); - } else { - d1 = 0; q1 = 0; *rp = d; - } - current_igcdv_hist.d1 = d1; - current_igcdv_hist.q1 = q1; -} - -void dp_idivv_hist(g,rp) -Q g; -DP *rp; -{ - int i,n; - Q *q,*q1,*s; - Q t,u,m; - N qn; - - n = current_igcdv_hist.len; - q = current_igcdv_hist.q; q1 = current_igcdv_hist.q1; - divsn(NM(current_igcdv_hist.d),NM(g),&qn); NTOQ(qn,1,m); - s = (Q *)MALLOC(n*sizeof(Q)); - for ( i = 0; i < n; i++ ) - mulq(m,q[i],&s[i]); - if ( q1 ) { - divsn(NM(current_igcdv_hist.d1),NM(g),&qn); NTOQ(qn,1,m); - for ( i = 0; i < n; i++ ) { - mulq(m,q1[i],&t); addq(t,s[i],&u); s[i] = u; - } - } - dp_vtod(s,current_igcdv_hist.dp,rp); -} - -void dp_vtod(c,p,rp) -Q *c; -DP p; -DP *rp; -{ MP mr0,m,mr; int i; @@ -547,72 +243,10 @@ DP *rp; } } -#if INET -void dp_ptozp_d_old(dist,ndist,p,rp) -NODE dist; -int ndist; -DP p,*rp; -{ - DP d,s,u,su; - MP m,mr,mr0; - MP *w0,*w; - Q *g; - int i,n,nv,nsep; - P t; - NODE tn,n0,n1,n2; - struct oVECT v; - int id,sindex; - Obj dmy; - Q gcd; - STRING cont,div; +extern int mpi_mag; +extern int PCoeffs; - if ( !p ) - *rp = 0; - else { - for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); - nsep = ndist + 1; - if ( n <= nsep ) { - dp_ptozp(p,rp); return; - } - nv = p->nv; - w0 = (MP *)MALLOC(nsep*sizeof(MP)); bzero(w0,nsep*sizeof(MP)); - w = (MP *)MALLOC(nsep*sizeof(MP)); bzero(w,nsep*sizeof(MP)); - g = (Q *)MALLOC(nsep*sizeof(Q)); bzero(g,nsep*sizeof(Q)); - for ( m = BDY(p), i = 0; m; m = NEXT(m), i++, i %= nsep ) { - NEXTMP(w0[i],w[i]); w[i]->c = m->c; w[i]->dl = m->dl; - } - MKSTR(cont,"reg_dp_cont"); MKSTR(div,"reg_dp_idiv"); - - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - NEXT(w[i]) = 0; MKDP(nv,w0[i],d); d->sugar = p->sugar; - MKNODE(n2,d,0); MKNODE(n1,cont,n2); MKNODE(n0,BDY(tn),n1); - Pox_rpc(n0,&dmy); - } - NEXT(w[i]) = 0; MKDP(nv,w0[i],d); d->sugar = p->sugar; - dp_cont(d,&g[i]); - - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) - Pox_pop_local(tn,&g[i]); - v.id = O_VECT; v.len = nsep; v.body = (pointer *)g; igcdv(&v,&gcd); - - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - MKNODE(n2,gcd,0); MKNODE(n1,div,n2); MKNODE(n0,BDY(tn),n1); - Pox_rpc(n0,&dmy); - } - dp_idiv(d,gcd,&s); - - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - Pox_pop_local(tn,&u); - addd(CO,s,u,&su); s = su; - } - *rp = s; - } -} - -void dp_ptozp_d(dist,ndist,p,rp) -NODE dist; -int ndist; -DP p,*rp; +void dp_ptozp_d(DP p,DP *rp) { int i,j,k,l,n,nsep; MP m; @@ -621,7 +255,6 @@ DP p,*rp; VECT c,cs; VECT qi,ri; LIST *qr; - int s,id; Obj dmy; Q d0,d1,gcd,a,u,u1; Q *q,*r; @@ -630,12 +263,28 @@ DP p,*rp; N qn,gn; double get_rtime(); int blen; + NODE dist; + int ndist; double t0; double t_e,t_d,t_d1,t_c; + extern int DP_NFStat; + extern LIST Dist; + void Pox_rpc(); + void Pox_pop_local(); if ( !p ) *rp = 0; else { + if ( PCoeffs ) { + dp_ptozp(p,rp); return; + } + if ( !Dist || p_mag(BDY(p)->c) <= mpi_mag ) { + dist = 0; ndist = 0; + if ( DP_NFStat ) fprintf(asir_out,"L"); + } else { + dist = BDY(Dist); ndist = length(dist); + if ( DP_NFStat ) fprintf(asir_out,"D"); + } for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); nsep = ndist + 1; if ( n <= nsep ) { @@ -698,16 +347,12 @@ DP p,*rp; } } -void dp_ptozp2_d(dist,ndist,p0,p1,hp,rp) -NODE dist; -int ndist; -DP p0,p1; -DP *hp,*rp; +void dp_ptozp2_d(DP p0,DP p1,DP *hp,DP *rp) { DP t,s,h,r; MP m,mr,mr0,m0; - addd(CO,p0,p1,&t); dp_ptozp_d(dist,ndist,t,&s); + addd(CO,p0,p1,&t); dp_ptozp_d(t,&s); if ( !p0 ) { h = 0; r = s; } else if ( !p1 ) { @@ -725,193 +370,1852 @@ DP *hp,*rp; r->sugar = p1->sugar; *hp = h; *rp = r; } -#endif +int have_sf_coef(P p) +{ + DCP dc; + + if ( !p ) + return 0; + else if ( NUM(p) ) + return NID((Num)p) == N_GFS ? 1 : 0; + else { + for ( dc = DC(p); dc; dc = NEXT(dc) ) + if ( have_sf_coef(COEF(dc)) ) + return 1; + return 0; + } +} + +void head_coef(P p,Num *c) +{ + if ( !p ) + *c = 0; + else if ( NUM(p) ) + *c = (Num)p; + else + head_coef(COEF(DC(p)),c); +} + +void dp_monic_sf(DP p,DP *rp) +{ + Num c; + + if ( !p ) + *rp = 0; + else { + head_coef(BDY(p)->c,&c); + divsdc(CO,p,(P)c,rp); + } +} + +void dp_prim(DP p,DP *rp) +{ + P t,g; + DP p1; + MP m,mr,mr0; + int i,n; + P *w; + Q *c; + Q dvr; + + if ( !p ) + *rp = 0; + else if ( dp_fcoeffs == N_GFS ) { + for ( m = BDY(p); m; m = NEXT(m) ) + if ( OID(m->c) == O_N ) { + /* GCD of coeffs = 1 */ + dp_monic_sf(p,rp); + return; + } else break; + /* compute GCD over the finite fieid */ + for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); + w = (P *)ALLOCA(n*sizeof(P)); + for ( m = BDY(p), i = 0; i < n; m = NEXT(m), i++ ) + w[i] = m->c; + gcdsf(CO,w,n,&g); + if ( NUM(g) ) + dp_monic_sf(p,rp); + else { + for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { + NEXTMP(mr0,mr); divsp(CO,m->c,g,&mr->c); mr->dl = m->dl; + } + NEXT(mr) = 0; MKDP(p->nv,mr0,p1); p1->sugar = p->sugar; + dp_monic_sf(p1,rp); + } + return; + } else if ( dp_fcoeffs ) + *rp = p; + else if ( NoGCD ) + dp_ptozp(p,rp); + else { + dp_ptozp(p,&p1); p = p1; + for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); + if ( n == 1 ) { + m = BDY(p); + NEWMP(mr); mr->dl = m->dl; mr->c = (P)ONE; NEXT(mr) = 0; + MKDP(p->nv,mr,*rp); (*rp)->sugar = p->sugar; + return; + } + w = (P *)ALLOCA(n*sizeof(P)); + c = (Q *)ALLOCA(n*sizeof(Q)); + for ( m =BDY(p), i = 0; i < n; m = NEXT(m), i++ ) + if ( NUM(m->c) ) { + c[i] = (Q)m->c; w[i] = (P)ONE; + } else + ptozp(m->c,1,&c[i],&w[i]); + qltozl(c,n,&dvr); heu_nezgcdnpz(CO,w,n,&t); mulp(CO,t,(P)dvr,&g); + if ( NUM(g) ) + *rp = p; + else { + for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { + NEXTMP(mr0,mr); divsp(CO,m->c,g,&mr->c); mr->dl = m->dl; + } + NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; + } + } +} + +void heu_nezgcdnpz(VL vl,P *pl,int m,P *pr) +{ + int i,r; + P gcd,t,s1,s2,u; + Q rq; + + while ( 1 ) { + for ( i = 0, s1 = 0; i < m; i++ ) { + r = random(); UTOQ(r,rq); + mulp(vl,pl[i],(P)rq,&t); addp(vl,s1,t,&u); s1 = u; + } + for ( i = 0, s2 = 0; i < m; i++ ) { + r = random(); UTOQ(r,rq); + mulp(vl,pl[i],(P)rq,&t); addp(vl,s2,t,&u); s2 = u; + } + ezgcdp(vl,s1,s2,&gcd); + for ( i = 0; i < m; i++ ) { + if ( !divtpz(vl,pl[i],gcd,&t) ) + break; + } + if ( i == m ) + break; + } + *pr = gcd; +} + +void dp_prim_mod(DP p,int mod,DP *rp) +{ + P t,g; + MP m,mr,mr0; + + if ( !p ) + *rp = 0; + else if ( NoGCD ) + *rp = p; + else { + for ( m = BDY(p), g = m->c, m = NEXT(m); m; m = NEXT(m) ) { + gcdprsmp(CO,mod,g,m->c,&t); g = t; + } + for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { + NEXTMP(mr0,mr); divsmp(CO,mod,m->c,g,&mr->c); mr->dl = m->dl; + } + NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; + } +} + +void dp_cont(DP p,Q *rp) +{ + VECT v; + + dp_dtov(p,&v); igcdv(v,rp); +} + +void dp_dtov(DP dp,VECT *rp) +{ + MP m,t; + int i,n; + VECT v; + pointer *p; + + m = BDY(dp); + for ( t = m, n = 0; t; t = NEXT(t), n++ ); + MKVECT(v,n); + for ( i = 0, p = BDY(v), t = m; i < n; t = NEXT(t), i++ ) + p[i] = (pointer)(t->c); + *rp = v; +} + /* - * Old codes + * s-poly computation + * */ +void dp_sp(DP p1,DP p2,DP *rp) +{ + int i,n,td; + int *w; + DL d1,d2,d; + MP m; + DP t,s1,s2,u; + Q c,c1,c2; + N gn,tn; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + w = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, td = 0; i < n; i++ ) { + w[i] = MAX(d1->d[i],d2->d[i]); td += MUL_WEIGHT(w[i],i); + } + + NEWDL(d,n); d->td = td - d1->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d1->d[i]; + c1 = (Q)BDY(p1)->c; c2 = (Q)BDY(p2)->c; + if ( INT(c1) && INT(c2) ) { + gcdn(NM(c1),NM(c2),&gn); + if ( !UNIN(gn) ) { + divsn(NM(c1),gn,&tn); NTOQ(tn,SGN(c1),c); c1 = c; + divsn(NM(c2),gn,&tn); NTOQ(tn,SGN(c2),c); c2 = c; + } + } + + NEWMP(m); m->dl = d; m->c = (P)c2; NEXT(m) = 0; + MKDP(n,m,s1); s1->sugar = d->td; muld(CO,s1,p1,&t); + + NEWDL(d,n); d->td = td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d2->d[i]; + NEWMP(m); m->dl = d; m->c = (P)c1; NEXT(m) = 0; + MKDP(n,m,s2); s2->sugar = d->td; muld(CO,s2,p2,&u); + + subd(CO,t,u,rp); + if ( GenTrace ) { + LIST hist; + NODE node; + + node = mknode(4,ONE,0,s1,ONE); + MKLIST(hist,node); + MKNODE(TraceList,hist,0); + + node = mknode(4,ONE,0,0,ONE); + chsgnd(s2,(DP *)&ARG2(node)); + MKLIST(hist,node); + MKNODE(node,hist,TraceList); TraceList = node; + } +} + +void _dp_sp_dup(DP p1,DP p2,DP *rp) +{ + int i,n,td; + int *w; + DL d1,d2,d; + MP m; + DP t,s1,s2,u; + Q c,c1,c2; + N gn,tn; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + w = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, td = 0; i < n; i++ ) { + w[i] = MAX(d1->d[i],d2->d[i]); td += MUL_WEIGHT(w[i],i); + } + + _NEWDL(d,n); d->td = td - d1->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d1->d[i]; + c1 = (Q)BDY(p1)->c; c2 = (Q)BDY(p2)->c; + if ( INT(c1) && INT(c2) ) { + gcdn(NM(c1),NM(c2),&gn); + if ( !UNIN(gn) ) { + divsn(NM(c1),gn,&tn); NTOQ(tn,SGN(c1),c); c1 = c; + divsn(NM(c2),gn,&tn); NTOQ(tn,SGN(c2),c); c2 = c; + } + } + + _NEWMP(m); m->dl = d; m->c = (P)c2; NEXT(m) = 0; + _MKDP(n,m,s1); s1->sugar = d->td; _muld_dup(CO,s1,p1,&t); _free_dp(s1); + + _NEWDL(d,n); d->td = td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d2->d[i]; + _NEWMP(m); m->dl = d; chsgnp((P)c1,&m->c); NEXT(m) = 0; + _MKDP(n,m,s2); s2->sugar = d->td; _muld_dup(CO,s2,p2,&u); _free_dp(s2); + + _addd_destructive(CO,t,u,rp); + if ( GenTrace ) { + LIST hist; + NODE node; + + node = mknode(4,ONE,0,s1,ONE); + MKLIST(hist,node); + MKNODE(TraceList,hist,0); + + node = mknode(4,ONE,0,0,ONE); + chsgnd(s2,(DP *)&ARG2(node)); + MKLIST(hist,node); + MKNODE(node,hist,TraceList); TraceList = node; + } +} + +void dp_sp_mod(DP p1,DP p2,int mod,DP *rp) +{ + int i,n,td; + int *w; + DL d1,d2,d; + MP m; + DP t,s,u; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + w = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, td = 0; i < n; i++ ) { + w[i] = MAX(d1->d[i],d2->d[i]); td += MUL_WEIGHT(w[i],i); + } + NEWDL_NOINIT(d,n); d->td = td - d1->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d1->d[i]; + NEWMP(m); m->dl = d; m->c = (P)BDY(p2)->c; NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; mulmd(CO,mod,p1,s,&t); + NEWDL_NOINIT(d,n); d->td = td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d2->d[i]; + NEWMP(m); m->dl = d; m->c = (P)BDY(p1)->c; NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; mulmd(CO,mod,p2,s,&u); + submd(CO,mod,t,u,rp); +} + +void _dp_sp_mod_dup(DP p1,DP p2,int mod,DP *rp) +{ + int i,n,td; + int *w; + DL d1,d2,d; + MP m; + DP t,s,u; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + w = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, td = 0; i < n; i++ ) { + w[i] = MAX(d1->d[i],d2->d[i]); td += MUL_WEIGHT(w[i],i); + } + _NEWDL(d,n); d->td = td - d1->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d1->d[i]; + _NEWMP(m); m->dl = d; m->c = BDY(p2)->c; NEXT(m) = 0; + _MKDP(n,m,s); s->sugar = d->td; _mulmd_dup(mod,s,p1,&t); _free_dp(s); + _NEWDL(d,n); d->td = td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d2->d[i]; + _NEWMP(m); m->dl = d; m->c = STOI(mod - ITOS(BDY(p1)->c)); NEXT(m) = 0; + _MKDP(n,m,s); s->sugar = d->td; _mulmd_dup(mod,s,p2,&u); _free_dp(s); + _addmd_destructive(mod,t,u,rp); +} + +void _dp_sp_mod(DP p1,DP p2,int mod,DP *rp) +{ + int i,n,td; + int *w; + DL d1,d2,d; + MP m; + DP t,s,u; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + w = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, td = 0; i < n; i++ ) { + w[i] = MAX(d1->d[i],d2->d[i]); td += MUL_WEIGHT(w[i],i); + } + NEWDL(d,n); d->td = td - d1->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d1->d[i]; + NEWMP(m); m->dl = d; m->c = BDY(p2)->c; NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; mulmd_dup(mod,s,p1,&t); + NEWDL(d,n); d->td = td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = w[i] - d2->d[i]; + NEWMP(m); m->dl = d; m->c = STOI(mod - ITOS(BDY(p1)->c)); NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; mulmd_dup(mod,s,p2,&u); + addmd_destructive(mod,t,u,rp); +} + +/* + * m-reduction + * do content reduction over Z or Q(x,...) + * do nothing over finite fields + * + */ + +void dp_red(DP p0,DP p1,DP p2,DP *head,DP *rest,P *dnp,DP *multp) +{ + int i,n; + DL d1,d2,d; + MP m; + DP t,s,r,h; + Q c,c1,c2; + N gn,tn; + P g,a; + P p[2]; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + NEWDL(d,n); d->td = d1->td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = d1->d[i]-d2->d[i]; + c1 = (Q)BDY(p1)->c; c2 = (Q)BDY(p2)->c; + if ( dp_fcoeffs == N_GFS ) { + p[0] = (P)c1; p[1] = (P)c2; + gcdsf(CO,p,2,&g); + divsp(CO,(P)c1,g,&a); c1 = (Q)a; divsp(CO,(P)c2,g,&a); c2 = (Q)a; + } else if ( dp_fcoeffs ) { + /* do nothing */ + } else if ( INT(c1) && INT(c2) ) { + gcdn(NM(c1),NM(c2),&gn); + if ( !UNIN(gn) ) { + divsn(NM(c1),gn,&tn); NTOQ(tn,SGN(c1),c); c1 = c; + divsn(NM(c2),gn,&tn); NTOQ(tn,SGN(c2),c); c2 = c; + } + } else { + ezgcdpz(CO,(P)c1,(P)c2,&g); + divsp(CO,(P)c1,g,&a); c1 = (Q)a; divsp(CO,(P)c2,g,&a); c2 = (Q)a; + } + NEWMP(m); m->dl = d; chsgnp((P)c1,&m->c); NEXT(m) = 0; MKDP(n,m,s); s->sugar = d->td; + *multp = s; + muld(CO,s,p2,&t); muldc(CO,p1,(P)c2,&s); addd(CO,s,t,&r); + muldc(CO,p0,(P)c2,&h); + *head = h; *rest = r; *dnp = (P)c2; +} + +/* m-reduction over a field */ + +void dp_red_f(DP p1,DP p2,DP *rest) +{ + int i,n; + DL d1,d2,d; + MP m; + DP t,s; + Obj a,b; + + n = p1->nv; + d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + + NEWDL(d,n); d->td = d1->td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = d1->d[i]-d2->d[i]; + + NEWMP(m); m->dl = d; + divr(CO,(Obj)BDY(p1)->c,(Obj)BDY(p2)->c,&a); chsgnr(a,&b); + C(m) = (P)b; + NEXT(m) = 0; MKDP(n,m,s); s->sugar = d->td; + + muld(CO,s,p2,&t); addd(CO,p1,t,rest); +} + +void dp_red_mod(DP p0,DP p1,DP p2,int mod,DP *head,DP *rest,P *dnp) +{ + int i,n; + DL d1,d2,d; + MP m; + DP t,s,r,h; + P c1,c2,g,u; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + NEWDL(d,n); d->td = d1->td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = d1->d[i]-d2->d[i]; + c1 = (P)BDY(p1)->c; c2 = (P)BDY(p2)->c; + gcdprsmp(CO,mod,c1,c2,&g); + divsmp(CO,mod,c1,g,&u); c1 = u; divsmp(CO,mod,c2,g,&u); c2 = u; + if ( NUM(c2) ) { + divsmp(CO,mod,c1,c2,&u); c1 = u; c2 = (P)ONEM; + } + NEWMP(m); m->dl = d; chsgnmp(mod,(P)c1,&m->c); NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; mulmd(CO,mod,s,p2,&t); + if ( NUM(c2) ) { + addmd(CO,mod,p1,t,&r); h = p0; + } else { + mulmdc(CO,mod,p1,c2,&s); addmd(CO,mod,s,t,&r); mulmdc(CO,mod,p0,c2,&h); + } + *head = h; *rest = r; *dnp = c2; +} + +struct oEGT eg_red_mod; + +void _dp_red_mod_destructive(DP p1,DP p2,int mod,DP *rp) +{ + int i,n; + DL d1,d2,d; + MP m; + DP t,s; + int c,c1,c2; + extern int do_weyl; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + _NEWDL(d,n); d->td = d1->td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = d1->d[i]-d2->d[i]; + c = invm(ITOS(BDY(p2)->c),mod); + c2 = ITOS(BDY(p1)->c); + DMAR(c,c2,0,mod,c1); + _NEWMP(m); m->dl = d; m->c = STOI(mod-c1); NEXT(m) = 0; #if 0 -void Pdp_sep(arg,rp) -NODE arg; -VECT *rp; + _MKDP(n,m,s); s->sugar = d->td; + _mulmd_dup(mod,s,p2,&t); _free_dp(s); +#else + if ( do_weyl ) { + _MKDP(n,m,s); s->sugar = d->td; + _mulmd_dup(mod,s,p2,&t); _free_dp(s); + } else { + _mulmdm_dup(mod,p2,m,&t); _FREEMP(m); + } +#endif +/* get_eg(&t0); */ + _addmd_destructive(mod,p1,t,rp); +/* get_eg(&t1); add_eg(&eg_red_mod,&t0,&t1); */ +} + +/* + * normal form computation + * + */ + +void dp_true_nf(NODE b,DP g,DP *ps,int full,DP *rp,P *dnp) { - DP p,s; - MP m,t,mr,mr0; - int i,j,n,d,r,q,q1,nv; - VECT w; - pointer *pw; + DP u,p,d,s,t,dmy; + NODE l; + MP m,mr; + int i,n; + int *wb; + int sugar,psugar; + P dn,tdn,tdn1; - p = (DP)ARG0(arg); m = BDY(p); - d = QTOS((Q)ARG1(arg)); - for ( t = m, n = 0; t; t = NEXT(t), n++ ); - if ( d > n ) - d = n; - q = n/d; r = n%d; q1 = q+1; - MKVECT(w,d); *rp = w; - t = m; pw = BDY(w); nv = p->nv; - for ( i = 0; i < r; i++ ) { - for ( mr0 = 0, j = 0; j < q1; j++, t = NEXT(t) ) { - NEXTMP(mr0,mr); - mr->c = t->c; - mr->dl = t->dl; + dn = (P)ONE; + if ( !g ) { + *rp = 0; *dnp = dn; return; + } + for ( n = 0, l = b; l; l = NEXT(l), n++ ); + wb = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, l = b; i < n; l = NEXT(l), i++ ) + wb[i] = QTOS((Q)BDY(l)); + sugar = g->sugar; + for ( d = 0; g; ) { + for ( u = 0, i = 0; i < n; i++ ) { + if ( dp_redble(g,p = ps[wb[i]]) ) { + dp_red(d,g,p,&t,&u,&tdn,&dmy); + psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; + sugar = MAX(sugar,psugar); + if ( !u ) { + if ( d ) + d->sugar = sugar; + *rp = d; *dnp = dn; return; + } else { + d = t; + mulp(CO,dn,tdn,&tdn1); dn = tdn1; + } + break; + } } - NEXT(mr) = 0; MKDP(nv,mr0,s); s->sugar = p->sugar; - pw[i] = (pointer)s; + if ( u ) + g = u; + else if ( !full ) { + if ( g ) { + MKDP(g->nv,BDY(g),t); t->sugar = sugar; g = t; + } + *rp = g; *dnp = dn; return; + } else { + m = BDY(g); NEWMP(mr); mr->dl = m->dl; mr->c = m->c; + NEXT(mr) = 0; MKDP(g->nv,mr,t); t->sugar = mr->dl->td; + addd(CO,d,t,&s); d = s; + dp_rest(g,&t); g = t; + } } - for ( ; i < d; i++ ) { - for ( mr0 = 0, j = 0; j < q; j++, t = NEXT(t) ) { - NEXTMP(mr0,mr); - mr->c = t->c; - mr->dl = t->dl; + if ( d ) + d->sugar = sugar; + *rp = d; *dnp = dn; +} + +/* nf computation over Z */ + +void dp_nf_z(NODE b,DP g,DP *ps,int full,int multiple,DP *rp) +{ + DP u,p,d,s,t,dmy1; + P dmy; + NODE l; + MP m,mr; + int i,n; + int *wb; + int hmag; + int sugar,psugar; + + if ( !g ) { + *rp = 0; return; + } + for ( n = 0, l = b; l; l = NEXT(l), n++ ); + wb = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, l = b; i < n; l = NEXT(l), i++ ) + wb[i] = QTOS((Q)BDY(l)); + + hmag = multiple*HMAG(g); + sugar = g->sugar; + + for ( d = 0; g; ) { + for ( u = 0, i = 0; i < n; i++ ) { + if ( dp_redble(g,p = ps[wb[i]]) ) { + dp_red(d,g,p,&t,&u,&dmy,&dmy1); + psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; + sugar = MAX(sugar,psugar); + if ( !u ) { + if ( d ) + d->sugar = sugar; + *rp = d; return; + } + d = t; + break; + } } - NEXT(mr) = 0; MKDP(nv,mr0,s); s->sugar = p->sugar; - pw[i] = (pointer)s; + if ( u ) { + g = u; + if ( d ) { + if ( multiple && HMAG(d) > hmag ) { + dp_ptozp2(d,g,&t,&u); d = t; g = u; + hmag = multiple*HMAG(d); + } + } else { + if ( multiple && HMAG(g) > hmag ) { + dp_ptozp(g,&t); g = t; + hmag = multiple*HMAG(g); + } + } + } + else if ( !full ) { + if ( g ) { + MKDP(g->nv,BDY(g),t); t->sugar = sugar; g = t; + } + *rp = g; return; + } else { + m = BDY(g); NEWMP(mr); mr->dl = m->dl; mr->c = m->c; + NEXT(mr) = 0; MKDP(g->nv,mr,t); t->sugar = mr->dl->td; + addd(CO,d,t,&s); d = s; + dp_rest(g,&t); g = t; + + } } + if ( d ) + d->sugar = sugar; + *rp = d; } -void dp_ptozp_mpi(dist,ndist,p,rp) -NODE dist; -int ndist; -DP p,*rp; +/* nf computation over a field */ + +void dp_nf_f(NODE b,DP g,DP *ps,int full,DP *rp) { - int i,j,k,l,n,nsep; + DP u,p,d,s,t; + NODE l; + MP m,mr; + int i,n; + int *wb; + int sugar,psugar; + + if ( !g ) { + *rp = 0; return; + } + for ( n = 0, l = b; l; l = NEXT(l), n++ ); + wb = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, l = b; i < n; l = NEXT(l), i++ ) + wb[i] = QTOS((Q)BDY(l)); + + sugar = g->sugar; + for ( d = 0; g; ) { + for ( u = 0, i = 0; i < n; i++ ) { + if ( dp_redble(g,p = ps[wb[i]]) ) { + dp_red_f(g,p,&u); + psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; + sugar = MAX(sugar,psugar); + if ( !u ) { + if ( d ) + d->sugar = sugar; + *rp = d; return; + } + break; + } + } + if ( u ) + g = u; + else if ( !full ) { + if ( g ) { + MKDP(g->nv,BDY(g),t); t->sugar = sugar; g = t; + } + *rp = g; return; + } else { + m = BDY(g); NEWMP(mr); mr->dl = m->dl; mr->c = m->c; + NEXT(mr) = 0; MKDP(g->nv,mr,t); t->sugar = mr->dl->td; + addd(CO,d,t,&s); d = s; + dp_rest(g,&t); g = t; + } + } + if ( d ) + d->sugar = sugar; + *rp = d; +} + +/* nf computation over GF(mod) (only for internal use) */ + +void dp_nf_mod(NODE b,DP g,DP *ps,int mod,int full,DP *rp) +{ + DP u,p,d,s,t; + P dmy; + NODE l; + MP m,mr; + int sugar,psugar; + + if ( !g ) { + *rp = 0; return; + } + sugar = g->sugar; + for ( d = 0; g; ) { + for ( u = 0, l = b; l; l = NEXT(l) ) { + if ( dp_redble(g,p = ps[(int)BDY(l)]) ) { + dp_red_mod(d,g,p,mod,&t,&u,&dmy); + psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; + sugar = MAX(sugar,psugar); + if ( !u ) { + if ( d ) + d->sugar = sugar; + *rp = d; return; + } + d = t; + break; + } + } + if ( u ) + g = u; + else if ( !full ) { + if ( g ) { + MKDP(g->nv,BDY(g),t); t->sugar = sugar; g = t; + } + *rp = g; return; + } else { + m = BDY(g); NEWMP(mr); mr->dl = m->dl; mr->c = m->c; + NEXT(mr) = 0; MKDP(g->nv,mr,t); t->sugar = mr->dl->td; + addmd(CO,mod,d,t,&s); d = s; + dp_rest(g,&t); g = t; + } + } + if ( d ) + d->sugar = sugar; + *rp = d; +} + +void dp_true_nf_mod(NODE b,DP g,DP *ps,int mod,int full,DP *rp,P *dnp) +{ + DP u,p,d,s,t; + NODE l; + MP m,mr; + int i,n; + int *wb; + int sugar,psugar; + P dn,tdn,tdn1; + + dn = (P)ONEM; + if ( !g ) { + *rp = 0; *dnp = dn; return; + } + for ( n = 0, l = b; l; l = NEXT(l), n++ ); + wb = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0, l = b; i < n; l = NEXT(l), i++ ) + wb[i] = QTOS((Q)BDY(l)); + sugar = g->sugar; + for ( d = 0; g; ) { + for ( u = 0, i = 0; i < n; i++ ) { + if ( dp_redble(g,p = ps[wb[i]]) ) { + dp_red_mod(d,g,p,mod,&t,&u,&tdn); + psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; + sugar = MAX(sugar,psugar); + if ( !u ) { + if ( d ) + d->sugar = sugar; + *rp = d; *dnp = dn; return; + } else { + d = t; + mulmp(CO,mod,dn,tdn,&tdn1); dn = tdn1; + } + break; + } + } + if ( u ) + g = u; + else if ( !full ) { + if ( g ) { + MKDP(g->nv,BDY(g),t); t->sugar = sugar; g = t; + } + *rp = g; *dnp = dn; return; + } else { + m = BDY(g); NEWMP(mr); mr->dl = m->dl; mr->c = m->c; + NEXT(mr) = 0; MKDP(g->nv,mr,t); t->sugar = mr->dl->td; + addmd(CO,mod,d,t,&s); d = s; + dp_rest(g,&t); g = t; + } + } + if ( d ) + d->sugar = sugar; + *rp = d; *dnp = dn; +} + +void _dp_nf_mod_destructive(NODE b,DP g,DP *ps,int mod,int full,DP *rp) +{ + DP u,p,d; + NODE l; + MP m,mrd; + int sugar,psugar,n,h_reducible; + + if ( !g ) { + *rp = 0; return; + } + sugar = g->sugar; + n = g->nv; + for ( d = 0; g; ) { + for ( h_reducible = 0, l = b; l; l = NEXT(l) ) { + if ( dp_redble(g,p = ps[(int)BDY(l)]) ) { + h_reducible = 1; + psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; + _dp_red_mod_destructive(g,p,mod,&u); g = u; + sugar = MAX(sugar,psugar); + if ( !g ) { + if ( d ) + d->sugar = sugar; + _dptodp(d,rp); _free_dp(d); return; + } + break; + } + } + if ( !h_reducible ) { + /* head term is not reducible */ + if ( !full ) { + if ( g ) + g->sugar = sugar; + _dptodp(g,rp); _free_dp(g); return; + } else { + m = BDY(g); + if ( NEXT(m) ) { + BDY(g) = NEXT(m); NEXT(m) = 0; + } else { + _FREEDP(g); g = 0; + } + if ( d ) { + for ( mrd = BDY(d); NEXT(mrd); mrd = NEXT(mrd) ); + NEXT(mrd) = m; + } else { + _MKDP(n,m,d); + } + } + } + } + if ( d ) + d->sugar = sugar; + _dptodp(d,rp); _free_dp(d); +} + +/* reduction by linear base over a field */ + +void dp_lnf_f(DP p1,DP p2,NODE g,DP *r1p,DP *r2p) +{ + DP r1,r2,b1,b2,t,s; + Obj c,c1,c2; + NODE l,b; + int n; + + if ( !p1 ) { + *r1p = p1; *r2p = p2; return; + } + n = p1->nv; + for ( l = g, r1 = p1, r2 = p2; l; l = NEXT(l) ) { + if ( !r1 ) { + *r1p = r1; *r2p = r2; return; + } + b = BDY((LIST)BDY(l)); b1 = (DP)BDY(b); + if ( dl_equal(n,BDY(r1)->dl,BDY(b1)->dl) ) { + b2 = (DP)BDY(NEXT(b)); + divr(CO,(Obj)ONE,(Obj)BDY(b1)->c,&c1); + mulr(CO,c1,(Obj)BDY(r1)->c,&c2); chsgnr(c2,&c); + muldc(CO,b1,(P)c,&t); addd(CO,r1,t,&s); r1 = s; + muldc(CO,b2,(P)c,&t); addd(CO,r2,t,&s); r2 = s; + } + } + *r1p = r1; *r2p = r2; +} + +/* reduction by linear base over GF(mod) */ + +void dp_lnf_mod(DP p1,DP p2,NODE g,int mod,DP *r1p,DP *r2p) +{ + DP r1,r2,b1,b2,t,s; + P c; + MQ c1,c2; + NODE l,b; + int n; + + if ( !p1 ) { + *r1p = p1; *r2p = p2; return; + } + n = p1->nv; + for ( l = g, r1 = p1, r2 = p2; l; l = NEXT(l) ) { + if ( !r1 ) { + *r1p = r1; *r2p = r2; return; + } + b = BDY((LIST)BDY(l)); b1 = (DP)BDY(b); + if ( dl_equal(n,BDY(r1)->dl,BDY(b1)->dl) ) { + b2 = (DP)BDY(NEXT(b)); + invmq(mod,(MQ)BDY(b1)->c,&c1); + mulmq(mod,c1,(MQ)BDY(r1)->c,&c2); chsgnmp(mod,(P)c2,&c); + mulmdc(CO,mod,b1,c,&t); addmd(CO,mod,r1,t,&s); r1 = s; + mulmdc(CO,mod,b2,c,&t); addmd(CO,mod,r2,t,&s); r2 = s; + } + } + *r1p = r1; *r2p = r2; +} + +void dp_nf_tab_mod(DP p,LIST *tab,int mod,DP *rp) +{ + DP s,t,u; MP m; - NODE tn,n0,n1,n2,n3; - struct oVECT v; - VECT c,cs; - VECT qi,ri; - LIST *qr; - int id; - Obj dmy; - Q d0,d1,gcd,a,u,u1; - Q *q,*r; - STRING iqr_v; - pointer *b; - N qn,gn; - double get_rtime(); - int blen; - double t0; - double t_e,t_d,t_d1,t_c; + DL h; + int i,n; + if ( !p ) { + *rp = p; return; + } + n = p->nv; + for ( s = 0, i = 0, m = BDY(p); m; m = NEXT(m) ) { + h = m->dl; + while ( !dl_equal(n,h,BDY((DP)BDY(BDY(tab[i])))->dl ) ) + i++; + mulmdc(CO,mod,(DP)BDY(NEXT(BDY(tab[i]))),m->c,&t); + addmd(CO,mod,s,t,&u); s = u; + } + *rp = s; +} + +void dp_nf_tab_f(DP p,LIST *tab,DP *rp) +{ + DP s,t,u; + MP m; + DL h; + int i,n; + + if ( !p ) { + *rp = p; return; + } + n = p->nv; + for ( s = 0, i = 0, m = BDY(p); m; m = NEXT(m) ) { + h = m->dl; + while ( !dl_equal(n,h,BDY((DP)BDY(BDY(tab[i])))->dl ) ) + i++; + muldc(CO,(DP)BDY(NEXT(BDY(tab[i]))),m->c,&t); + addd(CO,s,t,&u); s = u; + } + *rp = s; +} + +/* + * setting flags + * call create_order_spec with vl=0 to set old type order. + * + */ + +int create_order_spec(VL vl,Obj obj,struct order_spec **specp) +{ + int i,j,n,s,row,col; + struct order_spec *spec; + struct order_pair *l; + NODE node,t,tn; + MAT m; + pointer **b; + int **w; + + if ( vl && obj && OID(obj) == O_LIST ) + return create_composite_order_spec(vl,(LIST)obj,specp); + + *specp = spec = (struct order_spec *)MALLOC(sizeof(struct order_spec)); + if ( !obj || NUM(obj) ) { + spec->id = 0; spec->obj = obj; + spec->ord.simple = QTOS((Q)obj); + return 1; + } else if ( OID(obj) == O_LIST ) { + node = BDY((LIST)obj); + for ( n = 0, t = node; t; t = NEXT(t), n++ ); + l = (struct order_pair *)MALLOC_ATOMIC(n*sizeof(struct order_pair)); + for ( i = 0, t = node, s = 0; i < n; t = NEXT(t), i++ ) { + tn = BDY((LIST)BDY(t)); l[i].order = QTOS((Q)BDY(tn)); + tn = NEXT(tn); l[i].length = QTOS((Q)BDY(tn)); + s += l[i].length; + } + spec->id = 1; spec->obj = obj; + spec->ord.block.order_pair = l; + spec->ord.block.length = n; spec->nv = s; + return 1; + } else if ( OID(obj) == O_MAT ) { + m = (MAT)obj; row = m->row; col = m->col; b = BDY(m); + w = almat(row,col); + for ( i = 0; i < row; i++ ) + for ( j = 0; j < col; j++ ) + w[i][j] = QTOS((Q)b[i][j]); + spec->id = 2; spec->obj = obj; + spec->nv = col; spec->ord.matrix.row = row; + spec->ord.matrix.matrix = w; + return 1; + } else + return 0; +} + +void print_composite_order_spec(struct order_spec *spec) +{ + int nv,n,len,i,j,k,start; + struct weight_or_block *worb; + + nv = spec->nv; + n = spec->ord.composite.length; + worb = spec->ord.composite.w_or_b; + for ( i = 0; i < n; i++, worb++ ) { + len = worb->length; + printf("[ "); + switch ( worb->type ) { + case IS_DENSE_WEIGHT: + for ( j = 0; j < len; j++ ) + printf("%d ",worb->body.dense_weight[j]); + for ( ; j < nv; j++ ) + printf("0 "); + break; + case IS_SPARSE_WEIGHT: + for ( j = 0, k = 0; j < nv; j++ ) + if ( j == worb->body.sparse_weight[k].pos ) + printf("%d ",worb->body.sparse_weight[k++].value); + else + printf("0 "); + break; + case IS_BLOCK: + start = worb->body.block.start; + for ( j = 0; j < start; j++ ) printf("0 "); + switch ( worb->body.block.order ) { + case 0: + for ( k = 0; k < len; k++, j++ ) printf("R "); + break; + case 1: + for ( k = 0; k < len; k++, j++ ) printf("G "); + break; + case 2: + for ( k = 0; k < len; k++, j++ ) printf("L "); + break; + } + for ( ; j < nv; j++ ) printf("0 "); + break; + } + printf("]\n"); + } +} + +/* order = [w_or_b, w_or_b, ... ] */ +/* w_or_b = w or b */ +/* w = [1,2,...] or [x,1,y,2,...] */ +/* b = [@lex,x,y,...,z] etc */ + +int create_composite_order_spec(VL vl,LIST order,struct order_spec **specp) +{ + NODE wb,t,p; + struct order_spec *spec; + VL tvl; + int n,i,j,k,l,start,end,len,w; + int *dw; + struct sparse_weight *sw; + struct weight_or_block *w_or_b; + Obj a0; + NODE a; + V v,sv,ev; + SYMBOL sym; + int *top; + + /* l = number of vars in vl */ + for ( l = 0, tvl = vl; tvl; tvl = NEXT(tvl), l++ ); + /* n = number of primitives in order */ + wb = BDY(order); + n = length(wb); + *specp = spec = (struct order_spec *)MALLOC(sizeof(struct order_spec)); + spec->id = 3; + spec->obj = (Obj)order; + spec->nv = l; + spec->ord.composite.length = n; + w_or_b = spec->ord.composite.w_or_b = (struct weight_or_block *) + MALLOC(sizeof(struct weight_or_block)*(n+1)); + + /* top : register the top variable in each w_or_b specification */ + top = (int *)ALLOCA(l*sizeof(int)); + for ( i = 0; i < l; i++ ) top[i] = 0; + + for ( t = wb, i = 0; t; t = NEXT(t), i++ ) { + if ( !BDY(t) || OID((Obj)BDY(t)) != O_LIST ) + error("a list of lists must be specified for the key \"order\""); + a = BDY((LIST)BDY(t)); + len = length(a); + a0 = (Obj)BDY(a); + if ( !a0 || OID(a0) == O_N ) { + /* a is a dense weight vector */ + dw = (int *)MALLOC(sizeof(int)*len); + for ( j = 0, p = a; j < len; p = NEXT(p), j++ ) { + if ( !INT((Q)BDY(p)) ) + error("a dense weight vector must be specified as a list of integers"); + dw[j] = QTOS((Q)BDY(p)); + } + w_or_b[i].type = IS_DENSE_WEIGHT; + w_or_b[i].length = len; + w_or_b[i].body.dense_weight = dw; + + /* find the top */ + for ( k = 0; k < len && !dw[k]; k++ ); + if ( k < len ) top[k] = 1; + + } else if ( OID(a0) == O_P ) { + /* a is a sparse weight vector */ + len >>= 1; + sw = (struct sparse_weight *) + MALLOC(sizeof(struct sparse_weight)*len); + for ( j = 0, p = a; j < len; j++ ) { + if ( !BDY(p) || OID((P)BDY(p)) != O_P ) + error("a sparse weight vector must be specified as [var1,weight1,...]"); + v = VR((P)BDY(p)); p = NEXT(p); + for ( tvl = vl, k = 0; tvl && tvl->v != v; + k++, tvl = NEXT(tvl) ); + if ( !tvl ) + error("invalid variable name in a sparse weight vector"); + sw[j].pos = k; + if ( !INT((Q)BDY(p)) ) + error("a sparse weight vector must be specified as [var1,weight1,...]"); + sw[j].value = QTOS((Q)BDY(p)); p = NEXT(p); + } + w_or_b[i].type = IS_SPARSE_WEIGHT; + w_or_b[i].length = len; + w_or_b[i].body.sparse_weight = sw; + + /* find the top */ + for ( k = 0; k < len && !sw[k].value; k++ ); + if ( k < len ) top[sw[k].pos] = 1; + } else if ( OID(a0) == O_RANGE ) { + /* [range(v1,v2),w] */ + sv = VR((P)(((RANGE)a0)->start)); + ev = VR((P)(((RANGE)a0)->end)); + for ( tvl = vl, start = 0; tvl && tvl->v != sv; start++, tvl = NEXT(tvl) ); + if ( !tvl ) + error("invalid range"); + for ( end = start; tvl && tvl->v != ev; end++, tvl = NEXT(tvl) ); + if ( !tvl ) + error("invalid range"); + len = end-start+1; + sw = (struct sparse_weight *) + MALLOC(sizeof(struct sparse_weight)*len); + w = QTOS((Q)BDY(NEXT(a))); + for ( tvl = vl, k = 0; k < start; k++, tvl = NEXT(tvl) ); + for ( j = 0 ; k <= end; k++, tvl = NEXT(tvl), j++ ) { + sw[j].pos = k; + sw[j].value = w; + } + w_or_b[i].type = IS_SPARSE_WEIGHT; + w_or_b[i].length = len; + w_or_b[i].body.sparse_weight = sw; + + /* register the top */ + if ( w ) top[start] = 1; + } else if ( OID(a0) == O_SYMBOL ) { + /* a is a block */ + sym = (SYMBOL)a0; a = NEXT(a); len--; + if ( OID((Obj)BDY(a)) == O_RANGE ) { + sv = VR((P)(((RANGE)BDY(a))->start)); + ev = VR((P)(((RANGE)BDY(a))->end)); + for ( tvl = vl, start = 0; tvl && tvl->v != sv; start++, tvl = NEXT(tvl) ); + if ( !tvl ) + error("invalid range"); + for ( end = start; tvl && tvl->v != ev; end++, tvl = NEXT(tvl) ); + if ( !tvl ) + error("invalid range"); + len = end-start+1; + } else { + for ( start = 0, tvl = vl; tvl->v != VR((P)BDY(a)); + tvl = NEXT(tvl), start++ ); + for ( p = NEXT(a), tvl = NEXT(tvl); p; + p = NEXT(p), tvl = NEXT(tvl) ) { + if ( !BDY(p) || OID((P)BDY(p)) != O_P ) + error("a block must be specified as [ordsymbol,var1,var2,...]"); + if ( tvl->v != VR((P)BDY(p)) ) break; + } + if ( p ) + error("a block must be contiguous in the variable list"); + } + w_or_b[i].type = IS_BLOCK; + w_or_b[i].length = len; + w_or_b[i].body.block.start = start; + if ( !strcmp(sym->name,"@grlex") ) + w_or_b[i].body.block.order = 0; + else if ( !strcmp(sym->name,"@glex") ) + w_or_b[i].body.block.order = 1; + else if ( !strcmp(sym->name,"@lex") ) + w_or_b[i].body.block.order = 2; + else + error("invalid ordername"); + /* register the tops */ + for ( j = 0, k = start; j < len; j++, k++ ) + top[k] = 1; + } + } + for ( k = 0; k < l && top[k]; k++ ); + if ( k < l ) { + /* incomplete order specification; add @grlex */ + w_or_b[n].type = IS_BLOCK; + w_or_b[n].length = l; + w_or_b[n].body.block.start = 0; + w_or_b[n].body.block.order = 0; + spec->ord.composite.length = n+1; + } + if ( 1 ) print_composite_order_spec(spec); +} + +/* module order spec */ + +void create_modorder_spec(int id,LIST shift,struct modorder_spec **s) +{ + struct modorder_spec *spec; + NODE n,t; + LIST list; + int *ds; + int i,l; + Q q; + + *s = spec = (struct modorder_spec *)MALLOC(sizeof(struct modorder_spec)); + spec->id = id; + if ( shift ) { + n = BDY(shift); + spec->len = l = length(n); + spec->degree_shift = ds = (int *)MALLOC_ATOMIC(l*sizeof(int)); + for ( t = n, i = 0; t; t = NEXT(t), i++ ) + ds[i] = QTOS((Q)BDY(t)); + } else { + spec->len = 0; + spec->degree_shift = 0; + } + STOQ(id,q); + n = mknode(2,q,shift); + MKLIST(list,n); + spec->obj = (Obj)list; +} + +/* + * converters + * + */ + +void dp_homo(DP p,DP *rp) +{ + MP m,mr,mr0; + int i,n,nv,td; + DL dl,dlh; + if ( !p ) *rp = 0; else { - for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); - nsep = ndist + 1; - if ( n <= nsep ) { - dp_ptozp(p,rp); return; + n = p->nv; nv = n + 1; + m = BDY(p); td = sugard(m); + for ( mr0 = 0; m; m = NEXT(m) ) { + NEXTMP(mr0,mr); mr->c = m->c; + dl = m->dl; + mr->dl = dlh = (DL)MALLOC_ATOMIC((nv+1)*sizeof(int)); + dlh->td = td; + for ( i = 0; i < n; i++ ) + dlh->d[i] = dl->d[i]; + dlh->d[n] = td - dl->td; } - t0 = get_rtime(); - dp_dtov(p,&c); - igcdv_estimate(c,&d0); - t_e = get_rtime()-t0; - t0 = get_rtime(); - dp_dtov(p,&c); - sepvect(c,nsep,&cs); - MKSTR(iqr_v,"iqr"); - qr = (LIST *)CALLOC(nsep,sizeof(LIST)); - q = (Q *)CALLOC(n,sizeof(Q)); - r = (Q *)CALLOC(n,sizeof(Q)); - for ( i = 0, tn = dist, b = BDY(cs); i < ndist; - i++, tn = NEXT(tn) ) { - div_vect_mpi(QTOS((Q)BDY(tn)),b[i],d0); + NEXT(mr) = 0; MKDP(nv,mr0,*rp); (*rp)->sugar = p->sugar; + } +} + +void dp_dehomo(DP p,DP *rp) +{ + MP m,mr,mr0; + int i,n,nv; + DL dl,dlh; + + if ( !p ) + *rp = 0; + else { + n = p->nv; nv = n - 1; + m = BDY(p); + for ( mr0 = 0; m; m = NEXT(m) ) { + NEXTMP(mr0,mr); mr->c = m->c; + dlh = m->dl; + mr->dl = dl = (DL)MALLOC_ATOMIC((nv+1)*sizeof(int)); + dl->td = dlh->td - dlh->d[nv]; + for ( i = 0; i < nv; i++ ) + dl->d[i] = dlh->d[i]; } - iqrv(b[i],d0,&qr[i]); - dp_dtov(p,&c); - for ( i = j = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - get_div_vect_mpi(QTOS((Q)BDY(tn)),&qr[i]); - } - t_d = get_rtime()-t0; - t_d1 = t_d/n; - t0 = get_rtime(); - for ( i = j = 0; i < nsep; i++ ) { - tn = BDY(qr[i]); qi = (VECT)BDY(tn); ri = (VECT)BDY(NEXT(tn)); - for ( k = 0, l = qi->len; k < l; k++, j++ ) { - q[j] = (Q)BDY(qi)[k]; r[j] = (Q)BDY(ri)[k]; + NEXT(mr) = 0; MKDP(nv,mr0,*rp); (*rp)->sugar = p->sugar; + } +} + +void dp_mod(DP p,int mod,NODE subst,DP *rp) +{ + MP m,mr,mr0; + P t,s,s1; + V v; + NODE tn; + + if ( !p ) + *rp = 0; + else { + for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { + for ( tn = subst, s = m->c; tn; tn = NEXT(tn) ) { + v = VR((P)BDY(tn)); tn = NEXT(tn); + substp(CO,s,v,(P)BDY(tn),&s1); s = s1; } - } - v.id = O_VECT; v.len = n; v.body = (pointer *)r; igcdv(&v,&d1); - if ( d1 ) { - gcdn(NM(d0),NM(d1),&gn); NTOQ(gn,1,gcd); - divsn(NM(d0),gn,&qn); NTOQ(qn,1,a); - for ( i = 0; i < n; i++ ) { - mulq(a,q[i],&u); - if ( r[i] ) { - divsn(NM(r[i]),gn,&qn); NTOQ(qn,SGN(r[i]),u1); - addq(u,u1,&q[i]); - } else - q[i] = u; + ptomp(mod,s,&t); + if ( t ) { + NEXTMP(mr0,mr); mr->c = t; mr->dl = m->dl; } + } + if ( mr0 ) { + NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; } else - gcd = d0; - dp_vtod(q,p,rp); - t_c = get_rtime()-t0; - blen=p_mag(gcd); - pz_t_e += t_e; pz_t_d += t_d; pz_t_d1 += t_d1; pz_t_c += t_c; - if ( 0 ) - fprintf(stderr,"(%d,%d)",p_mag(d0)-blen,blen); + *rp = 0; } } -void dp_ptozp_d(dist,ndist,p,rp) -NODE dist; -int ndist; -DP p,*rp; +void dp_rat(DP p,DP *rp) { - DP d,s,u,su; MP m,mr,mr0; - MP *w0,*w; - Q *g; - int i,n,nv,nsep; - P t; - NODE tn,n0,n1,n2; + + if ( !p ) + *rp = 0; + else { + for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { + NEXTMP(mr0,mr); mptop(m->c,&mr->c); mr->dl = m->dl; + } + if ( mr0 ) { + NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; + } else + *rp = 0; + } +} + + +void homogenize_order(struct order_spec *old,int n,struct order_spec **newp) +{ + struct order_pair *l; + int length,nv,row,i,j; + int **newm,**oldm; + struct order_spec *new; + int onv,nnv,nlen,olen,owlen; + struct weight_or_block *owb,*nwb; + + *newp = new = (struct order_spec *)MALLOC(sizeof(struct order_spec)); + switch ( old->id ) { + case 0: + switch ( old->ord.simple ) { + case 0: + new->id = 0; new->ord.simple = 0; break; + case 1: + l = (struct order_pair *) + MALLOC_ATOMIC(2*sizeof(struct order_pair)); + l[0].length = n; l[0].order = 1; + l[1].length = 1; l[1].order = 2; + new->id = 1; + new->ord.block.order_pair = l; + new->ord.block.length = 2; new->nv = n+1; + break; + case 2: + new->id = 0; new->ord.simple = 1; break; + case 3: case 4: case 5: + new->id = 0; new->ord.simple = old->ord.simple+3; + dp_nelim = n-1; break; + case 6: case 7: case 8: case 9: + new->id = 0; new->ord.simple = old->ord.simple; break; + default: + error("homogenize_order : invalid input"); + } + break; + case 1: + length = old->ord.block.length; + l = (struct order_pair *) + MALLOC_ATOMIC((length+1)*sizeof(struct order_pair)); + bcopy((char *)old->ord.block.order_pair,(char *)l,length*sizeof(struct order_pair)); + l[length].order = 2; l[length].length = 1; + new->id = 1; new->nv = n+1; + new->ord.block.order_pair = l; + new->ord.block.length = length+1; + break; + case 2: + nv = old->nv; row = old->ord.matrix.row; + oldm = old->ord.matrix.matrix; newm = almat(row+1,nv+1); + for ( i = 0; i <= nv; i++ ) + newm[0][i] = 1; + for ( i = 0; i < row; i++ ) { + for ( j = 0; j < nv; j++ ) + newm[i+1][j] = oldm[i][j]; + newm[i+1][j] = 0; + } + new->id = 2; new->nv = nv+1; + new->ord.matrix.row = row+1; new->ord.matrix.matrix = newm; + break; + case 3: + onv = old->nv; + nnv = onv+1; + olen = old->ord.composite.length; + nlen = olen+1; + owb = old->ord.composite.w_or_b; + nwb = (struct weight_or_block *) + MALLOC(nlen*sizeof(struct weight_or_block)); + for ( i = 0; i < olen; i++ ) { + nwb[i].type = owb[i].type; + switch ( owb[i].type ) { + case IS_DENSE_WEIGHT: + owlen = owb[i].length; + nwb[i].length = owlen+1; + nwb[i].body.dense_weight = (int *)MALLOC((owlen+1)*sizeof(int)); + for ( j = 0; j < owlen; j++ ) + nwb[i].body.dense_weight[j] = owb[i].body.dense_weight[j]; + nwb[i].body.dense_weight[owlen] = 0; + break; + case IS_SPARSE_WEIGHT: + nwb[i].length = owb[i].length; + nwb[i].body.sparse_weight = owb[i].body.sparse_weight; + break; + case IS_BLOCK: + nwb[i].length = owb[i].length; + nwb[i].body.block = owb[i].body.block; + break; + } + } + nwb[i].type = IS_SPARSE_WEIGHT; + nwb[i].body.sparse_weight = + (struct sparse_weight *)MALLOC(sizeof(struct sparse_weight)); + nwb[i].body.sparse_weight[0].pos = onv; + nwb[i].body.sparse_weight[0].value = 1; + new->id = 3; + new->nv = nnv; + new->ord.composite.length = nlen; + new->ord.composite.w_or_b = nwb; + print_composite_order_spec(new); + break; + default: + error("homogenize_order : invalid input"); + } +} + +void qltozl(Q *w,int n,Q *dvr) +{ + N nm,dn; + N g,l1,l2,l3; + Q c,d; + int i; struct oVECT v; - int sindex,id; - Obj dmy; - Q gcd; - STRING gcd_h,div_h; + for ( i = 0; i < n; i++ ) + if ( w[i] && !INT(w[i]) ) + break; + if ( i == n ) { + v.id = O_VECT; v.len = n; v.body = (pointer *)w; + igcdv(&v,dvr); return; + } + c = w[0]; nm = NM(c); dn = INT(c) ? ONEN : DN(c); + for ( i = 1; i < n; i++ ) { + c = w[i]; l1 = INT(c) ? ONEN : DN(c); + gcdn(nm,NM(c),&g); nm = g; + gcdn(dn,l1,&l2); muln(dn,l1,&l3); divsn(l3,l2,&dn); + } + if ( UNIN(dn) ) + NTOQ(nm,1,d); + else + NDTOQ(nm,dn,1,d); + *dvr = d; +} + +int comp_nm(Q *a,Q *b) +{ + return cmpn((*a)?NM(*a):0,(*b)?NM(*b):0); +} + +void sortbynm(Q *w,int n) +{ + qsort(w,n,sizeof(Q),(int (*)(const void *,const void *))comp_nm); +} + + +/* + * simple operations + * + */ + +int dp_redble(DP p1,DP p2) +{ + int i,n; + DL d1,d2; + + d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + if ( d1->td < d2->td ) + return 0; + else { + for ( i = 0, n = p1->nv; i < n; i++ ) + if ( d1->d[i] < d2->d[i] ) + return 0; + return 1; + } +} + +void dp_subd(DP p1,DP p2,DP *rp) +{ + int i,n; + DL d1,d2,d; + MP m; + DP s; + + n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; + NEWDL(d,n); d->td = d1->td - d2->td; + for ( i = 0; i < n; i++ ) + d->d[i] = d1->d[i]-d2->d[i]; + NEWMP(m); m->dl = d; m->c = (P)ONE; NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; + *rp = s; +} + +void dltod(DL d,int n,DP *rp) +{ + MP m; + DP s; + + NEWMP(m); m->dl = d; m->c = (P)ONE; NEXT(m) = 0; + MKDP(n,m,s); s->sugar = d->td; + *rp = s; +} + +void dp_hm(DP p,DP *rp) +{ + MP m,mr; + if ( !p ) *rp = 0; else { - for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); - nsep = ndist + 1; - if ( n <= nsep ) { - dp_ptozp(p,rp); return; + m = BDY(p); + NEWMP(mr); mr->dl = m->dl; mr->c = m->c; NEXT(mr) = 0; + MKDP(p->nv,mr,*rp); (*rp)->sugar = mr->dl->td; /* XXX */ + } +} + +void dp_ht(DP p,DP *rp) +{ + MP m,mr; + + if ( !p ) + *rp = 0; + else { + m = BDY(p); + NEWMP(mr); mr->dl = m->dl; mr->c = (P)ONE; NEXT(mr) = 0; + MKDP(p->nv,mr,*rp); (*rp)->sugar = mr->dl->td; /* XXX */ + } +} + +void dp_rest(DP p,DP *rp) +{ + MP m; + + m = BDY(p); + if ( !NEXT(m) ) + *rp = 0; + else { + MKDP(p->nv,NEXT(m),*rp); + if ( *rp ) + (*rp)->sugar = p->sugar; + } +} + +DL lcm_of_DL(int nv,DL dl1,DL dl2,DL dl) +{ + register int i, *d1, *d2, *d, td; + + if ( !dl ) NEWDL(dl,nv); + d = dl->d, d1 = dl1->d, d2 = dl2->d; + for ( td = 0, i = 0; i < nv; d1++, d2++, d++, i++ ) { + *d = *d1 > *d2 ? *d1 : *d2; + td += MUL_WEIGHT(*d,i); + } + dl->td = td; + return dl; +} + +int dl_equal(int nv,DL dl1,DL dl2) +{ + register int *d1, *d2, n; + + if ( dl1->td != dl2->td ) return 0; + for ( d1 = dl1->d, d2 = dl2->d, n = nv; --n >= 0; d1++, d2++ ) + if ( *d1 != *d2 ) return 0; + return 1; +} + +int dp_nt(DP p) +{ + int i; + MP m; + + if ( !p ) + return 0; + else { + for ( i = 0, m = BDY(p); m; m = NEXT(m), i++ ); + return i; + } +} + +int dp_homogeneous(DP p) +{ + MP m; + int d; + + if ( !p ) + return 1; + else { + m = BDY(p); + d = m->dl->td; + m = NEXT(m); + for ( ; m; m = NEXT(m) ) { + if ( m->dl->td != d ) + return 0; } - nv = p->nv; - w0 = (MP *)MALLOC(nsep*sizeof(MP)); bzero(w0,nsep*sizeof(MP)); - w = (MP *)MALLOC(nsep*sizeof(MP)); bzero(w,nsep*sizeof(MP)); - g = (Q *)MALLOC(nsep*sizeof(Q)); bzero(g,nsep*sizeof(Q)); - for ( m = BDY(p), i = 0; m; m = NEXT(m), i++, i %= nsep ) { - NEXTMP(w0[i],w[i]); w[i]->c = m->c; w[i]->dl = m->dl; + return 1; + } +} + +void _print_mp(int nv,MP m) +{ + int i; + + if ( !m ) + return; + for ( ; m; m = NEXT(m) ) { + fprintf(stderr,"%d<",ITOS(C(m))); + for ( i = 0; i < nv; i++ ) { + fprintf(stderr,"%d",m->dl->d[i]); + if ( i != nv-1 ) + fprintf(stderr," "); } - MKSTR(gcd_h,"dp_igcdv_hist"); MKSTR(div_h,"dp_idivv_hist"); + fprintf(stderr,">",C(m)); + } + fprintf(stderr,"\n"); +} - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - NEXT(w[i]) = 0; MKDP(nv,w0[i],d); d->sugar = p->sugar; - MKNODE(n2,d,0); MKNODE(n1,gcd_h,n2); MKNODE(n0,BDY(tn),n1); - Pox_rpc(n0,&dmy); +static int cmp_mp_nvar; + +int comp_mp(MP *a,MP *b) +{ + return -(*cmpdl)(cmp_mp_nvar,(*a)->dl,(*b)->dl); +} + +void dp_sort(DP p,DP *rp) +{ + MP t,mp,mp0; + int i,n; + DP r; + MP *w; + + if ( !p ) { + *rp = 0; + return; + } + for ( t = BDY(p), n = 0; t; t = NEXT(t), n++ ); + w = (MP *)ALLOCA(n*sizeof(MP)); + for ( t = BDY(p), i = 0; i < n; t = NEXT(t), i++ ) + w[i] = t; + cmp_mp_nvar = NV(p); + qsort(w,n,sizeof(MP),(int (*)(const void *,const void *))comp_mp); + mp0 = 0; + for ( i = n-1; i >= 0; i-- ) { + NEWMP(mp); mp->dl = w[i]->dl; C(mp) = C(w[i]); + NEXT(mp) = mp0; mp0 = mp; + } + MKDP(p->nv,mp0,r); + r->sugar = p->sugar; + *rp = r; +} + +DP extract_initial_term_from_dp(DP p,int *weight,int n); +LIST extract_initial_term(LIST f,int *weight,int n); + +DP extract_initial_term_from_dp(DP p,int *weight,int n) +{ + int w,t,i,top; + MP m,r0,r; + DP dp; + + if ( !p ) return 0; + top = 1; + for ( m = BDY(p); m; m = NEXT(m) ) { + for ( i = 0, t = 0; i < n; i++ ) + t += weight[i]*m->dl->d[i]; + if ( top || t > w ) { + r0 = 0; + w = t; + top = 0; } - NEXT(w[i]) = 0; MKDP(nv,w0[i],d); d->sugar = p->sugar; - dp_igcdv_hist(d,&g[i]); + if ( t == w ) { + NEXTMP(r0,r); + r->dl = m->dl; + r->c = m->c; + } + } + NEXT(r) = 0; + MKDP(p->nv,r0,dp); + return dp; +} - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) - Pox_pop_local(tn,&g[i]); - v.id = O_VECT; v.len = nsep; v.body = (pointer *)g; igcdv(&v,&gcd); +LIST extract_initial_term(LIST f,int *weight,int n) +{ + NODE nd,r0,r; + Obj p; + LIST l; - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - MKNODE(n2,gcd,0); MKNODE(n1,div_h,n2); MKNODE(n0,BDY(tn),n1); - Pox_rpc(n0,&dmy); + nd = BDY(f); + for ( r0 = 0; nd; nd = NEXT(nd) ) { + NEXTNODE(r0,r); + p = (Obj)BDY(nd); + BDY(r) = (pointer)extract_initial_term_from_dp((DP)p,weight,n); + } + if ( r0 ) NEXT(r) = 0; + MKLIST(l,r0); + return l; +} + +LIST dp_initial_term(LIST f,struct order_spec *ord) +{ + int n,l,i; + struct weight_or_block *worb; + int *weight; + + switch ( ord->id ) { + case 2: /* matrix order */ + /* extract the first row */ + n = ord->nv; + weight = ord->ord.matrix.matrix[0]; + return extract_initial_term(f,weight,n); + case 3: /* composite order */ + /* the first w_or_b */ + worb = ord->ord.composite.w_or_b; + switch ( worb->type ) { + case IS_DENSE_WEIGHT: + n = worb->length; + weight = worb->body.dense_weight; + return extract_initial_term(f,weight,n); + case IS_SPARSE_WEIGHT: + n = ord->nv; + weight = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0; i < n; i++ ) weight[i] = 0; + l = worb->length; + for ( i = 0; i < l; i++ ) + weight[worb->body.sparse_weight[i].pos] + = worb->body.sparse_weight[i].value; + return extract_initial_term(f,weight,n); + default: + error("dp_initial_term : unsupported order"); + } + default: + error("dp_initial_term : unsupported order"); + } +} + +int highest_order_dp(DP p,int *weight,int n); +LIST highest_order(LIST f,int *weight,int n); + +int highest_order_dp(DP p,int *weight,int n) +{ + int w,t,i,top; + MP m; + + if ( !p ) return -1; + top = 1; + for ( m = BDY(p); m; m = NEXT(m) ) { + for ( i = 0, t = 0; i < n; i++ ) + t += weight[i]*m->dl->d[i]; + if ( top || t > w ) { + w = t; + top = 0; } - dp_idivv_hist(gcd,&s); + } + return w; +} - for ( i = 0, tn = dist; i < ndist; i++, tn = NEXT(tn) ) { - Pox_pop_local(tn,&u); - addd(CO,s,u,&su); s = su; +LIST highest_order(LIST f,int *weight,int n) +{ + int h; + NODE nd,r0,r; + Obj p; + LIST l; + Q q; + + nd = BDY(f); + for ( r0 = 0; nd; nd = NEXT(nd) ) { + NEXTNODE(r0,r); + p = (Obj)BDY(nd); + h = highest_order_dp((DP)p,weight,n); + STOQ(h,q); + BDY(r) = (pointer)q; + } + if ( r0 ) NEXT(r) = 0; + MKLIST(l,r0); + return l; +} + +LIST dp_order(LIST f,struct order_spec *ord) +{ + int n,l,i; + struct weight_or_block *worb; + int *weight; + + switch ( ord->id ) { + case 2: /* matrix order */ + /* extract the first row */ + n = ord->nv; + weight = ord->ord.matrix.matrix[0]; + return highest_order(f,weight,n); + case 3: /* composite order */ + /* the first w_or_b */ + worb = ord->ord.composite.w_or_b; + switch ( worb->type ) { + case IS_DENSE_WEIGHT: + n = worb->length; + weight = worb->body.dense_weight; + return highest_order(f,weight,n); + case IS_SPARSE_WEIGHT: + n = ord->nv; + weight = (int *)ALLOCA(n*sizeof(int)); + for ( i = 0; i < n; i++ ) weight[i] = 0; + l = worb->length; + for ( i = 0; i < l; i++ ) + weight[worb->body.sparse_weight[i].pos] + = worb->body.sparse_weight[i].value; + return highest_order(f,weight,n); + default: + error("dp_initial_term : unsupported order"); + } + default: + error("dp_initial_term : unsupported order"); + } +} + +int dpv_ht(DPV p,DP *h) +{ + int len,max,maxi,i,t; + DP *e; + MP m,mr; + + len = p->len; + e = p->body; + max = -1; + maxi = -1; + for ( i = 0; i < len; i++ ) + if ( e[i] && (t = BDY(e[i])->dl->td) > max ) { + max = t; + maxi = i; } - *rp = s; + if ( max < 0 ) { + *h = 0; + return -1; + } else { + m = BDY(e[maxi]); + NEWMP(mr); mr->dl = m->dl; mr->c = (P)ONE; NEXT(mr) = 0; + MKDP(e[maxi]->nv,mr,*h); (*h)->sugar = mr->dl->td; /* XXX */ + return maxi; } } -#endif