version 1.22, 2002/12/27 07:37:57 |
version 1.43, 2007/09/07 00:45:50 |
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* DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, |
* DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, |
* PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. |
* PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. |
* |
* |
* $OpenXM: OpenXM_contrib2/asir2000/builtin/dp-supp.c,v 1.21 2002/01/28 00:54:41 noro Exp $ |
* $OpenXM: OpenXM_contrib2/asir2000/builtin/dp-supp.c,v 1.42 2007/09/06 02:23:40 noro Exp $ |
*/ |
*/ |
#include "ca.h" |
#include "ca.h" |
#include "base.h" |
#include "base.h" |
Line 62 extern int NoGCD; |
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Line 62 extern int NoGCD; |
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extern int GenTrace; |
extern int GenTrace; |
extern NODE TraceList; |
extern NODE TraceList; |
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int show_orderspec; |
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void print_composite_order_spec(struct order_spec *spec); |
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/* |
/* |
* content reduction |
* content reduction |
* |
* |
Line 118 void dp_ptozp2(DP p0,DP p1,DP *hp,DP *rp) |
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Line 122 void dp_ptozp2(DP p0,DP p1,DP *hp,DP *rp) |
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*hp = h; *rp = r; |
*hp = h; *rp = r; |
} |
} |
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void dp_ptozp3(DP p,Q *dvr,DP *rp) |
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{ |
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MP m,mr,mr0; |
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int i,n; |
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Q *w; |
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P t; |
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if ( !p ) { |
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*rp = 0; *dvr = 0; |
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}else { |
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for ( m =BDY(p), n = 0; m; m = NEXT(m), n++ ); |
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w = (Q *)ALLOCA(n*sizeof(Q)); |
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for ( m =BDY(p), i = 0; i < n; m = NEXT(m), i++ ) |
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if ( NUM(m->c) ) |
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w[i] = (Q)m->c; |
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else |
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ptozp(m->c,1,&w[i],&t); |
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sortbynm(w,n); |
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qltozl(w,n,dvr); |
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for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { |
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NEXTMP(mr0,mr); divsp(CO,m->c,(P)(*dvr),&mr->c); mr->dl = m->dl; |
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} |
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NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; |
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} |
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} |
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void dp_idiv(DP p,Q c,DP *rp) |
void dp_idiv(DP p,Q c,DP *rp) |
{ |
{ |
Q t; |
Q t; |
Line 387 int have_sf_coef(P p) |
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Line 417 int have_sf_coef(P p) |
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} |
} |
} |
} |
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void head_coef(P p,Num *c) |
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{ |
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if ( !p ) |
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*c = 0; |
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else if ( NUM(p) ) |
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*c = (Num)p; |
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else |
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head_coef(COEF(DC(p)),c); |
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} |
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void dp_monic_sf(DP p,DP *rp) |
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{ |
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Num c; |
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if ( !p ) |
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*rp = 0; |
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else { |
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head_coef(BDY(p)->c,&c); |
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divsdc(CO,p,(P)c,rp); |
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} |
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} |
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void dp_prim(DP p,DP *rp) |
void dp_prim(DP p,DP *rp) |
{ |
{ |
P t,g; |
P t,g; |
Line 399 void dp_prim(DP p,DP *rp) |
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Line 451 void dp_prim(DP p,DP *rp) |
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if ( !p ) |
if ( !p ) |
*rp = 0; |
*rp = 0; |
else if ( dp_fcoeffs ) { |
else if ( dp_fcoeffs == N_GFS ) { |
for ( m = BDY(p); m; m = NEXT(m) ) { |
for ( m = BDY(p); m; m = NEXT(m) ) |
if ( OID(m->c) == O_N ) { |
if ( OID(m->c) == O_N ) { |
/* GCD of coeffs = 1 */ |
/* GCD of coeffs = 1 */ |
*rp = p; |
dp_monic_sf(p,rp); |
return; |
return; |
} else if ( have_sf_coef(m->c) ) { |
} else break; |
/* compute GCD over the finite fieid */ |
/* compute GCD over the finite fieid */ |
for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); |
for ( m = BDY(p), n = 0; m; m = NEXT(m), n++ ); |
w = (P *)ALLOCA(n*sizeof(P)); |
w = (P *)ALLOCA(n*sizeof(P)); |
for ( m = BDY(p), i = 0; i < n; m = NEXT(m), i++ ) |
for ( m = BDY(p), i = 0; i < n; m = NEXT(m), i++ ) |
w[i] = m->c; |
w[i] = m->c; |
gcdsf(CO,w,n,&g); |
gcdsf(CO,w,n,&g); |
if ( NUM(g) ) |
if ( NUM(g) ) |
*rp = p; |
dp_monic_sf(p,rp); |
else { |
else { |
for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { |
for ( mr0 = 0, m = BDY(p); m; m = NEXT(m) ) { |
NEXTMP(mr0,mr); divsp(CO,m->c,g,&mr->c); mr->dl = m->dl; |
NEXTMP(mr0,mr); divsp(CO,m->c,g,&mr->c); mr->dl = m->dl; |
} |
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NEXT(mr) = 0; MKDP(p->nv,mr0,*rp); (*rp)->sugar = p->sugar; |
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} |
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return; |
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} |
} |
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NEXT(mr) = 0; MKDP(p->nv,mr0,p1); p1->sugar = p->sugar; |
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dp_monic_sf(p1,rp); |
} |
} |
/* all coeffs are poly over Q */ |
return; |
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} else if ( dp_fcoeffs ) |
*rp = p; |
*rp = p; |
} else if ( NoGCD ) |
else if ( NoGCD ) |
dp_ptozp(p,rp); |
dp_ptozp(p,rp); |
else { |
else { |
dp_ptozp(p,&p1); p = p1; |
dp_ptozp(p,&p1); p = p1; |
Line 460 void heu_nezgcdnpz(VL vl,P *pl,int m,P *pr) |
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Line 511 void heu_nezgcdnpz(VL vl,P *pl,int m,P *pr) |
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int i,r; |
int i,r; |
P gcd,t,s1,s2,u; |
P gcd,t,s1,s2,u; |
Q rq; |
Q rq; |
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DCP dc; |
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extern int DP_Print; |
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while ( 1 ) { |
while ( 1 ) { |
for ( i = 0, s1 = 0; i < m; i++ ) { |
for ( i = 0, s1 = 0; i < m; i++ ) { |
r = random(); UTOQ(r,rq); |
r = random(); UTOQ(r,rq); |
Line 471 void heu_nezgcdnpz(VL vl,P *pl,int m,P *pr) |
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Line 524 void heu_nezgcdnpz(VL vl,P *pl,int m,P *pr) |
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mulp(vl,pl[i],(P)rq,&t); addp(vl,s2,t,&u); s2 = u; |
mulp(vl,pl[i],(P)rq,&t); addp(vl,s2,t,&u); s2 = u; |
} |
} |
ezgcdp(vl,s1,s2,&gcd); |
ezgcdp(vl,s1,s2,&gcd); |
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if ( DP_Print > 2 ) |
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{ fprintf(asir_out,"(%d)",nmonop(gcd)); fflush(asir_out); } |
for ( i = 0; i < m; i++ ) { |
for ( i = 0; i < m; i++ ) { |
if ( !divtpz(vl,pl[i],gcd,&t) ) |
if ( !divtpz(vl,pl[i],gcd,&t) ) |
break; |
break; |
Line 728 void dp_red(DP p0,DP p1,DP p2,DP *head,DP *rest,P *dnp |
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Line 783 void dp_red(DP p0,DP p1,DP p2,DP *head,DP *rest,P *dnp |
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Q c,c1,c2; |
Q c,c1,c2; |
N gn,tn; |
N gn,tn; |
P g,a; |
P g,a; |
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P p[2]; |
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n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; |
n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl; |
NEWDL(d,n); d->td = d1->td - d2->td; |
NEWDL(d,n); d->td = d1->td - d2->td; |
for ( i = 0; i < n; i++ ) |
for ( i = 0; i < n; i++ ) |
d->d[i] = d1->d[i]-d2->d[i]; |
d->d[i] = d1->d[i]-d2->d[i]; |
c1 = (Q)BDY(p1)->c; c2 = (Q)BDY(p2)->c; |
c1 = (Q)BDY(p1)->c; c2 = (Q)BDY(p2)->c; |
if ( dp_fcoeffs ) { |
if ( dp_fcoeffs == N_GFS ) { |
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p[0] = (P)c1; p[1] = (P)c2; |
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gcdsf(CO,p,2,&g); |
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divsp(CO,(P)c1,g,&a); c1 = (Q)a; divsp(CO,(P)c2,g,&a); c2 = (Q)a; |
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} else if ( dp_fcoeffs ) { |
/* do nothing */ |
/* do nothing */ |
} else if ( INT(c1) && INT(c2) ) { |
} else if ( INT(c1) && INT(c2) ) { |
gcdn(NM(c1),NM(c2),&gn); |
gcdn(NM(c1),NM(c2),&gn); |
Line 753 void dp_red(DP p0,DP p1,DP p2,DP *head,DP *rest,P *dnp |
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Line 813 void dp_red(DP p0,DP p1,DP p2,DP *head,DP *rest,P *dnp |
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*head = h; *rest = r; *dnp = (P)c2; |
*head = h; *rest = r; *dnp = (P)c2; |
} |
} |
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/* |
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* m-reduction by a marked poly |
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* do content reduction over Z or Q(x,...) |
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* do nothing over finite fields |
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* |
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*/ |
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void dp_red_marked(DP p0,DP p1,DP p2,DP hp2,DP *head,DP *rest,P *dnp,DP *multp) |
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{ |
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int i,n; |
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DL d1,d2,d; |
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MP m; |
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DP t,s,r,h; |
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Q c,c1,c2; |
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N gn,tn; |
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P g,a; |
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P p[2]; |
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n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(hp2)->dl; |
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NEWDL(d,n); d->td = d1->td - d2->td; |
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for ( i = 0; i < n; i++ ) |
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d->d[i] = d1->d[i]-d2->d[i]; |
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c1 = (Q)BDY(p1)->c; c2 = (Q)BDY(hp2)->c; |
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if ( dp_fcoeffs == N_GFS ) { |
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p[0] = (P)c1; p[1] = (P)c2; |
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gcdsf(CO,p,2,&g); |
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divsp(CO,(P)c1,g,&a); c1 = (Q)a; divsp(CO,(P)c2,g,&a); c2 = (Q)a; |
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} else if ( dp_fcoeffs ) { |
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/* do nothing */ |
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} else if ( INT(c1) && INT(c2) ) { |
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gcdn(NM(c1),NM(c2),&gn); |
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if ( !UNIN(gn) ) { |
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divsn(NM(c1),gn,&tn); NTOQ(tn,SGN(c1),c); c1 = c; |
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divsn(NM(c2),gn,&tn); NTOQ(tn,SGN(c2),c); c2 = c; |
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} |
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} else { |
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ezgcdpz(CO,(P)c1,(P)c2,&g); |
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divsp(CO,(P)c1,g,&a); c1 = (Q)a; divsp(CO,(P)c2,g,&a); c2 = (Q)a; |
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} |
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NEWMP(m); m->dl = d; chsgnp((P)c1,&m->c); NEXT(m) = 0; MKDP(n,m,s); s->sugar = d->td; |
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*multp = s; |
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muld(CO,s,p2,&t); muldc(CO,p1,(P)c2,&s); addd(CO,s,t,&r); |
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muldc(CO,p0,(P)c2,&h); |
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*head = h; *rest = r; *dnp = (P)c2; |
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} |
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/* m-reduction over a field */ |
/* m-reduction over a field */ |
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void dp_red_f(DP p1,DP p2,DP *rest) |
void dp_red_f(DP p1,DP p2,DP *rest) |
Line 901 void dp_true_nf(NODE b,DP g,DP *ps,int full,DP *rp,P * |
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Line 1008 void dp_true_nf(NODE b,DP g,DP *ps,int full,DP *rp,P * |
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*rp = d; *dnp = dn; |
*rp = d; *dnp = dn; |
} |
} |
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void dp_removecont2(DP p1,DP p2,DP *r1p,DP *r2p,Q *contp) |
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{ |
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struct oVECT v; |
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int i,n1,n2,n; |
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MP m,m0,t; |
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Q *w; |
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Q h; |
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if ( p1 ) { |
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for ( i = 0, m = BDY(p1); m; m = NEXT(m), i++ ); |
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n1 = i; |
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} else |
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n1 = 0; |
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if ( p2 ) { |
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for ( i = 0, m = BDY(p2); m; m = NEXT(m), i++ ); |
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n2 = i; |
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} else |
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n2 = 0; |
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n = n1+n2; |
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if ( !n ) { |
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*r1p = 0; *r2p = 0; *contp = ONE; return; |
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} |
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w = (Q *)ALLOCA(n*sizeof(Q)); |
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v.len = n; |
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v.body = (pointer *)w; |
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i = 0; |
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if ( p1 ) |
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for ( m = BDY(p1); i < n1; m = NEXT(m), i++ ) w[i] = (Q)m->c; |
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if ( p2 ) |
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for ( m = BDY(p2); i < n; m = NEXT(m), i++ ) w[i] = (Q)m->c; |
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h = w[0]; removecont_array((P *)w,n,1); divq(h,w[0],contp); |
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i = 0; |
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if ( p1 ) { |
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for ( m0 = 0, t = BDY(p1); i < n1; i++, t = NEXT(t) ) { |
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NEXTMP(m0,m); m->c = (P)w[i]; m->dl = t->dl; |
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} |
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NEXT(m) = 0; |
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MKDP(p1->nv,m0,*r1p); (*r1p)->sugar = p1->sugar; |
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} else |
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*r1p = 0; |
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if ( p2 ) { |
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for ( m0 = 0, t = BDY(p2); i < n; i++, t = NEXT(t) ) { |
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NEXTMP(m0,m); m->c = (P)w[i]; m->dl = t->dl; |
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} |
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NEXT(m) = 0; |
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MKDP(p2->nv,m0,*r2p); (*r2p)->sugar = p2->sugar; |
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} else |
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*r2p = 0; |
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} |
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/* true nf by a marked GB */ |
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void dp_true_nf_marked(NODE b,DP g,DP *ps,DP *hps,DP *rp,P *nmp,P *dnp) |
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{ |
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DP u,p,d,s,t,dmy,hp; |
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NODE l; |
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MP m,mr; |
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int i,n,hmag; |
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int *wb; |
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int sugar,psugar,multiple; |
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P nm,tnm1,dn,tdn,tdn1; |
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Q cont; |
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multiple = 0; |
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hmag = multiple*HMAG(g); |
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nm = (P)ONE; |
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dn = (P)ONE; |
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if ( !g ) { |
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*rp = 0; *dnp = dn; return; |
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} |
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for ( n = 0, l = b; l; l = NEXT(l), n++ ); |
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wb = (int *)ALLOCA(n*sizeof(int)); |
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for ( i = 0, l = b; i < n; l = NEXT(l), i++ ) |
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wb[i] = QTOS((Q)BDY(l)); |
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sugar = g->sugar; |
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for ( d = 0; g; ) { |
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for ( u = 0, i = 0; i < n; i++ ) { |
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if ( dp_redble(g,hp = hps[wb[i]]) ) { |
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p = ps[wb[i]]; |
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dp_red_marked(d,g,p,hp,&t,&u,&tdn,&dmy); |
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psugar = (BDY(g)->dl->td - BDY(p)->dl->td) + p->sugar; |
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sugar = MAX(sugar,psugar); |
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if ( !u ) { |
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goto last; |
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} else { |
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d = t; |
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mulp(CO,dn,tdn,&tdn1); dn = tdn1; |
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} |
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break; |
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} |
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} |
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if ( u ) { |
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g = u; |
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if ( multiple && ((d && HMAG(d)>hmag) || (HMAG(g)>hmag)) ) { |
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dp_removecont2(d,g,&t,&u,&cont); d = t; g = u; |
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mulp(CO,nm,(P)cont,&tnm1); nm = tnm1; |
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if ( d ) |
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hmag = multiple*HMAG(d); |
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else |
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hmag = multiple*HMAG(g); |
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} |
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} else { |
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m = BDY(g); NEWMP(mr); mr->dl = m->dl; mr->c = m->c; |
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NEXT(mr) = 0; MKDP(g->nv,mr,t); t->sugar = mr->dl->td; |
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addd(CO,d,t,&s); d = s; |
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dp_rest(g,&t); g = t; |
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} |
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} |
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last: |
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if ( d ) { |
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dp_removecont2(d,0,&t,&u,&cont); d = t; |
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mulp(CO,nm,(P)cont,&tnm1); nm = tnm1; |
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d->sugar = sugar; |
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} |
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*rp = d; *nmp = nm; *dnp = dn; |
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} |
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/* nf computation over Z */ |
/* nf computation over Z */ |
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void dp_nf_z(NODE b,DP g,DP *ps,int full,int multiple,DP *rp) |
void dp_nf_z(NODE b,DP g,DP *ps,int full,int multiple,DP *rp) |
Line 1262 void dp_nf_tab_mod(DP p,LIST *tab,int mod,DP *rp) |
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Line 1486 void dp_nf_tab_mod(DP p,LIST *tab,int mod,DP *rp) |
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*rp = s; |
*rp = s; |
} |
} |
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void dp_nf_tab_f(DP p,LIST *tab,DP *rp) |
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{ |
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DP s,t,u; |
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MP m; |
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DL h; |
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int i,n; |
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if ( !p ) { |
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*rp = p; return; |
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} |
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n = p->nv; |
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for ( s = 0, i = 0, m = BDY(p); m; m = NEXT(m) ) { |
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h = m->dl; |
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while ( !dl_equal(n,h,BDY((DP)BDY(BDY(tab[i])))->dl ) ) |
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i++; |
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muldc(CO,(DP)BDY(NEXT(BDY(tab[i]))),m->c,&t); |
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addd(CO,s,t,&u); s = u; |
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} |
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*rp = s; |
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} |
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/* |
/* |
* setting flags |
* setting flags |
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* call create_order_spec with vl=0 to set old type order. |
* |
* |
*/ |
*/ |
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int create_order_spec(Obj obj,struct order_spec *spec) |
int create_order_spec(VL vl,Obj obj,struct order_spec **specp) |
{ |
{ |
int i,j,n,s,row,col; |
int i,j,n,s,row,col,ret; |
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struct order_spec *spec; |
struct order_pair *l; |
struct order_pair *l; |
NODE node,t,tn; |
NODE node,t,tn; |
MAT m; |
MAT m; |
pointer **b; |
pointer **b; |
int **w; |
int **w; |
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|
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if ( vl && obj && OID(obj) == O_LIST ) { |
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ret = create_composite_order_spec(vl,(LIST)obj,specp); |
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if ( show_orderspec ) |
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print_composite_order_spec(*specp); |
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return ret; |
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} |
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*specp = spec = (struct order_spec *)MALLOC(sizeof(struct order_spec)); |
if ( !obj || NUM(obj) ) { |
if ( !obj || NUM(obj) ) { |
spec->id = 0; spec->obj = obj; |
spec->id = 0; spec->obj = obj; |
spec->ord.simple = QTOS((Q)obj); |
spec->ord.simple = QTOS((Q)obj); |
Line 1307 int create_order_spec(Obj obj,struct order_spec *spec) |
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Line 1562 int create_order_spec(Obj obj,struct order_spec *spec) |
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return 0; |
return 0; |
} |
} |
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void print_composite_order_spec(struct order_spec *spec) |
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{ |
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int nv,n,len,i,j,k,start; |
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struct weight_or_block *worb; |
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nv = spec->nv; |
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n = spec->ord.composite.length; |
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worb = spec->ord.composite.w_or_b; |
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for ( i = 0; i < n; i++, worb++ ) { |
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len = worb->length; |
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printf("[ "); |
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switch ( worb->type ) { |
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case IS_DENSE_WEIGHT: |
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for ( j = 0; j < len; j++ ) |
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printf("%d ",worb->body.dense_weight[j]); |
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for ( ; j < nv; j++ ) |
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printf("0 "); |
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break; |
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case IS_SPARSE_WEIGHT: |
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for ( j = 0, k = 0; j < nv; j++ ) |
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if ( j == worb->body.sparse_weight[k].pos ) |
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printf("%d ",worb->body.sparse_weight[k++].value); |
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else |
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printf("0 "); |
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break; |
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case IS_BLOCK: |
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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"); |
|
} |
|
} |
|
|
|
struct order_spec *append_block(struct order_spec *spec, |
|
int nv,int nalg,int ord) |
|
{ |
|
MAT m,mat; |
|
int i,j,row,col,n; |
|
Q **b,**wp; |
|
int **w; |
|
NODE t,s,s0; |
|
struct order_pair *l,*l0; |
|
int n0,nv0; |
|
LIST list0,list1,list; |
|
Q oq,nq; |
|
struct order_spec *r; |
|
|
|
r = (struct order_spec *)MALLOC(sizeof(struct order_spec)); |
|
switch ( spec->id ) { |
|
case 0: |
|
STOQ(spec->ord.simple,oq); STOQ(nv,nq); |
|
t = mknode(2,oq,nq); MKLIST(list0,t); |
|
STOQ(ord,oq); STOQ(nalg,nq); |
|
t = mknode(2,oq,nq); MKLIST(list1,t); |
|
t = mknode(2,list0,list1); MKLIST(list,t); |
|
l = (struct order_pair *)MALLOC_ATOMIC(2*sizeof(struct order_pair)); |
|
l[0].order = spec->ord.simple; l[0].length = nv; |
|
l[1].order = ord; l[1].length = nalg; |
|
r->id = 1; r->obj = (Obj)list; |
|
r->ord.block.order_pair = l; |
|
r->ord.block.length = 2; |
|
r->nv = nv+nalg; |
|
break; |
|
case 1: |
|
if ( spec->nv != nv ) |
|
error("append_block : number of variables mismatch"); |
|
l0 = spec->ord.block.order_pair; |
|
n0 = spec->ord.block.length; |
|
nv0 = spec->nv; |
|
list0 = (LIST)spec->obj; |
|
n = n0+1; |
|
l = (struct order_pair *)MALLOC_ATOMIC(n*sizeof(struct order_pair)); |
|
for ( i = 0; i < n0; i++ ) |
|
l[i] = l0[i]; |
|
l[i].order = ord; l[i].length = nalg; |
|
for ( t = BDY(list0), s0 = 0; t; t = NEXT(t) ) { |
|
NEXTNODE(s0,s); BDY(s) = BDY(t); |
|
} |
|
STOQ(ord,oq); STOQ(nalg,nq); |
|
t = mknode(2,oq,nq); MKLIST(list,t); |
|
NEXTNODE(s0,s); BDY(s) = (pointer)list; NEXT(s) = 0; |
|
MKLIST(list,s0); |
|
r->id = 1; r->obj = (Obj)list; |
|
r->ord.block.order_pair = l; |
|
r->ord.block.length = n; |
|
r->nv = nv+nalg; |
|
break; |
|
case 2: |
|
if ( spec->nv != nv ) |
|
error("append_block : number of variables mismatch"); |
|
m = (MAT)spec->obj; |
|
row = m->row; col = m->col; b = (Q **)BDY(m); |
|
w = almat(row+nalg,col+nalg); |
|
MKMAT(mat,row+nalg,col+nalg); wp = (Q **)BDY(mat); |
|
for ( i = 0; i < row; i++ ) |
|
for ( j = 0; j < col; j++ ) { |
|
w[i][j] = QTOS(b[i][j]); |
|
wp[i][j] = b[i][j]; |
|
} |
|
for ( i = 0; i < nalg; i++ ) { |
|
w[i+row][i+col] = 1; |
|
wp[i+row][i+col] = ONE; |
|
} |
|
r->id = 2; r->obj = (Obj)mat; |
|
r->nv = col+nalg; r->ord.matrix.row = row+nalg; |
|
r->ord.matrix.matrix = w; |
|
break; |
|
case 3: |
|
default: |
|
/* XXX */ |
|
error("append_block : not implemented yet"); |
|
} |
|
return r; |
|
} |
|
|
|
int comp_sw(struct sparse_weight *a, struct sparse_weight *b) |
|
{ |
|
if ( a->pos > b->pos ) return 1; |
|
else if ( a->pos < b->pos ) return -1; |
|
else return 0; |
|
} |
|
|
|
/* 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); |
|
} |
|
qsort(sw,len,sizeof(struct sparse_weight), |
|
(int (*)(const void *,const void *))comp_sw); |
|
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; |
|
} |
|
} |
|
|
|
/* 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 |
* converters |
* |
* |
Line 1404 void dp_rat(DP p,DP *rp) |
|
Line 1986 void dp_rat(DP p,DP *rp) |
|
} |
} |
|
|
|
|
void homogenize_order(struct order_spec *old,int n,struct order_spec *new) |
void homogenize_order(struct order_spec *old,int n,struct order_spec **newp) |
{ |
{ |
struct order_pair *l; |
struct order_pair *l; |
int length,nv,row,i,j; |
int length,nv,row,i,j; |
int **newm,**oldm; |
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 ) { |
switch ( old->id ) { |
case 0: |
case 0: |
switch ( old->ord.simple ) { |
switch ( old->ord.simple ) { |
Line 1458 void homogenize_order(struct order_spec *old,int n,str |
|
Line 2044 void homogenize_order(struct order_spec *old,int n,str |
|
new->id = 2; new->nv = nv+1; |
new->id = 2; new->nv = nv+1; |
new->ord.matrix.row = row+1; new->ord.matrix.matrix = newm; |
new->ord.matrix.row = row+1; new->ord.matrix.matrix = newm; |
break; |
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: |
default: |
error("homogenize_order : invalid input"); |
error("homogenize_order : invalid input"); |
} |
} |
Line 1562 void dp_hm(DP p,DP *rp) |
|
Line 2188 void dp_hm(DP p,DP *rp) |
|
} |
} |
} |
} |
|
|
|
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) |
void dp_rest(DP p,DP *rp) |
{ |
{ |
MP m; |
MP m; |
Line 1648 void _print_mp(int nv,MP m) |
|
Line 2287 void _print_mp(int nv,MP m) |
|
fprintf(stderr,">",C(m)); |
fprintf(stderr,">",C(m)); |
} |
} |
fprintf(stderr,"\n"); |
fprintf(stderr,"\n"); |
|
} |
|
|
|
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; |
|
} |
|
if ( t == w ) { |
|
NEXTMP(r0,r); |
|
r->dl = m->dl; |
|
r->c = m->c; |
|
} |
|
} |
|
NEXT(r) = 0; |
|
MKDP(p->nv,r0,dp); |
|
return dp; |
|
} |
|
|
|
LIST extract_initial_term(LIST f,int *weight,int n) |
|
{ |
|
NODE nd,r0,r; |
|
Obj p; |
|
LIST l; |
|
|
|
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; |
|
} |
|
} |
|
return w; |
|
} |
|
|
|
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; |
|
} |
|
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; |
|
} |
|
} |
|
|
|
/* return 1 if 0 <_w1 v && v <_w2 0 */ |
|
|
|
int in_c12(int n,int *v,int row1,int **w1,int row2, int **w2) |
|
{ |
|
int t1,t2; |
|
|
|
t1 = compare_zero(n,v,row1,w1); |
|
t2 = compare_zero(n,v,row2,w2); |
|
if ( t1 > 0 && t2 < 0 ) return 1; |
|
else return 0; |
|
} |
|
|
|
/* 0 < u => 1, 0 > u => -1 */ |
|
|
|
int compare_zero(int n,int *u,int row,int **w) |
|
{ |
|
int i,j,t; |
|
int *wi; |
|
|
|
for ( i = 0; i < row; i++ ) { |
|
wi = w[i]; |
|
for ( j = 0, t = 0; j < n; j++ ) t += u[j]*wi[j]; |
|
if ( t > 0 ) return 1; |
|
else if ( t < 0 ) return -1; |
|
} |
|
return 0; |
|
} |
|
|
|
/* functions for generic groebner walk */ |
|
/* u=0 means u=-infty */ |
|
|
|
int compare_facet_preorder(int n,int *u,int *v, |
|
int row1,int **w1,int row2,int **w2) |
|
{ |
|
int i,j,s,t,tu,tv; |
|
int *w2i,*uv; |
|
|
|
if ( !u ) return 1; |
|
uv = W_ALLOC(n); |
|
for ( i = 0; i < row2; i++ ) { |
|
w2i = w2[i]; |
|
for ( j = 0, tu = tv = 0; j < n; j++ ) |
|
if ( s = w2i[j] ) { |
|
tu += s*u[j]; tv += s*v[j]; |
|
} |
|
for ( j = 0; j < n; j++ ) uv[j] = u[j]*tv-v[j]*tu; |
|
t = compare_zero(n,uv,row1,w1); |
|
if ( t > 0 ) return 1; |
|
else if ( t < 0 ) return 0; |
|
} |
|
return 1; |
|
} |
|
|
|
/* return 0 if last_w = infty */ |
|
|
|
NODE compute_last_w(NODE g,NODE gh,int n,int **w, |
|
int row1,int **w1,int row2,int **w2) |
|
{ |
|
DP d; |
|
MP f,m0,m; |
|
int *wt,*v,*h; |
|
NODE t,s,n0,tn,n1,r0,r; |
|
int i; |
|
|
|
wt = W_ALLOC(n); |
|
n0 = 0; |
|
for ( t = g, s = gh; t; t = NEXT(t), s = NEXT(s) ) { |
|
f = BDY((DP)BDY(t)); |
|
h = BDY((DP)BDY(s))->dl->d; |
|
for ( ; f; f = NEXT(f) ) { |
|
for ( i = 0; i < n; i++ ) wt[i] = h[i]-f->dl->d[i]; |
|
for ( i = 0; i < n && !wt[i]; i++ ); |
|
if ( i == n ) continue; |
|
|
|
if ( in_c12(n,wt,row1,w1,row2,w2) && |
|
compare_facet_preorder(n,*w,wt,row1,w1,row2,w2) ) { |
|
v = (int *)MALLOC_ATOMIC(n*sizeof(int)); |
|
for ( i = 0; i < n; i++ ) v[i] = wt[i]; |
|
MKNODE(n1,v,n0); n0 = n1; |
|
} |
|
} |
|
} |
|
if ( !n0 ) return 0; |
|
for ( t = n0; t; t = NEXT(t) ) { |
|
v = (int *)BDY(t); |
|
for ( s = n0; s; s = NEXT(s) ) |
|
if ( !compare_facet_preorder(n,v,(int *)BDY(s),row1,w1,row2,w2) ) |
|
break; |
|
if ( !s ) { |
|
*w = v; |
|
break; |
|
} |
|
} |
|
if ( !t ) |
|
error("compute_last_w : cannot happen"); |
|
r0 = 0; |
|
for ( t = g, s = gh; t; t = NEXT(t), s = NEXT(s) ) { |
|
f = BDY((DP)BDY(t)); |
|
h = BDY((DP)BDY(s))->dl->d; |
|
for ( m0 = 0; f; f = NEXT(f) ) { |
|
for ( i = 0; i < n; i++ ) wt[i] = h[i]-f->dl->d[i]; |
|
for ( i = 0; i < n && !wt[i]; i++ ); |
|
if ( i == n || |
|
(compare_facet_preorder(n,wt,*w,row1,w1,row2,w2) |
|
&& compare_facet_preorder(n,*w,wt,row1,w1,row2,w2)) ) { |
|
NEXTMP(m0,m); m->c = f->c; m->dl = f->dl; |
|
} |
|
} |
|
NEXT(m) = 0; |
|
MKDP(((DP)BDY(t))->nv,m0,d); d->sugar = ((DP)BDY(t))->sugar; |
|
NEXTNODE(r0,r); BDY(r) = (pointer)d; |
|
} |
|
NEXT(r) = 0; |
|
return r0; |
} |
} |