=================================================================== RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/strobj.c,v retrieving revision 1.86 retrieving revision 1.91 diff -u -p -r1.86 -r1.91 --- OpenXM_contrib2/asir2000/builtin/strobj.c 2005/10/26 23:43:23 1.86 +++ OpenXM_contrib2/asir2000/builtin/strobj.c 2005/11/02 06:32:44 1.91 @@ -45,7 +45,7 @@ * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE, * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE. * - * $OpenXM: OpenXM_contrib2/asir2000/builtin/strobj.c,v 1.85 2005/10/26 11:07:50 noro Exp $ + * $OpenXM: OpenXM_contrib2/asir2000/builtin/strobj.c,v 1.90 2005/11/02 05:39:23 noro Exp $ */ #include "ca.h" #include "parse.h" @@ -58,6 +58,14 @@ extern jmp_buf environnement; #endif #include +#if defined(__GNUC__) +#define INLINE inline +#elif defined(VISUAL) +#define INLINE __inline +#else +#define INLINE +#endif + struct TeXSymbol { char *text; char *symbol; @@ -88,10 +96,12 @@ void Pquote_is_integer(),Pquote_is_rational(),Pquote_i void Pquote_is_dependent(),Pquote_is_function(); void Pquote_normalize(); void Pquote_normalize_comp(); +void Pquote_normalize_match(); void Pquote_to_funargs(),Pfunargs_to_quote(),Pget_function_name(); -void Pquote_unify(),Pget_quote_id(),Pquote_match_rewrite(); +void Pquote_match(),Pget_quote_id(),Pquote_match_rewrite(); void Pquote_to_nary(),Pquote_to_bin(); +void fnode_do_assign(NODE arg); void do_assign(NODE arg); void fnodetotex_tb(FNODE f,TB tb); char *symbol_name(char *name); @@ -102,7 +112,7 @@ void tb_to_string(TB tb,STRING *rp); void fnodenodetotex_tb(NODE n,TB tb); void fargstotex_tb(char *opname,FNODE f,TB tb); int top_is_minus(FNODE f); -int quote_unify(Obj f,Obj pat,NODE *rp); +int quote_match(Obj f,Obj pat,NODE *rp); struct ftab str_tab[] = { {"sprintf",Psprintf,-99999999}, @@ -136,7 +146,8 @@ struct ftab str_tab[] = { {"quotetotex_env",Pquotetotex_env,-99999999}, {"flatten_quote",Pflatten_quote,-2}, {"quote_to_funargs",Pquote_to_funargs,1}, - {"quote_unify",Pquote_unify,2}, + {"quote_match",Pquote_match,2}, + {"quote_normalize_match",Pquote_normalize_match,2}, {"quote_match_rewrite",Pquote_match_rewrite,-4}, {"funargs_to_quote",Pfunargs_to_quote,1}, {"get_function_name",Pget_function_name,1}, @@ -623,7 +634,7 @@ void Pquote_is_dependent(NODE arg,Q *rp) } -void Pquote_unify(NODE arg,Q *rp) +void Pquote_match(NODE arg,Q *rp) { FNODE f,g; Obj obj; @@ -634,10 +645,10 @@ void Pquote_unify(NODE arg,Q *rp) #if 0 g = partial_eval(BDY(((QUOTE)ARG0(arg)))); MKQUOTE(q,g); - ret = quote_unify((Obj)q,(Obj)ARG1(arg),&r); + ret = quote_match((Obj)q,(Obj)ARG1(arg),&r); #else obj = (Obj)ARG0(arg); - ret = quote_unify(obj,(Obj)ARG1(arg),&r); + ret = quote_match(obj,(Obj)ARG1(arg),&r); #endif if ( ret ) { do_assign(r); @@ -646,6 +657,23 @@ void Pquote_unify(NODE arg,Q *rp) *rp = 0; } +void Pquote_normalize_match(NODE arg,Q *rp) +{ + QUOTE fq,pq; + FNODE f,p; + int ret; + NODE r; + + fq = (QUOTE)ARG0(arg); Pquote_normalize(mknode(2,fq,0),&fq); f = (FNODE)BDY(fq); + pq = (QUOTE)ARG1(arg); Pquote_normalize(mknode(2,pq,0),&pq); p = (FNODE)BDY(pq); + ret = fnode_normalize_match(f,p,&r); + if ( ret ) { + fnode_do_assign(r); + *rp = ONE; + } else + *rp = 0; +} + FNODE rewrite_fnode(FNODE,NODE); extern Obj VOIDobj; @@ -659,7 +687,7 @@ void Pquote_match_rewrite(NODE arg,Obj *rp) int ret,ind,ac; obj = (Obj)ARG0(arg); - ret = quote_unify(obj,(Obj)ARG1(arg),&r); + ret = quote_match(obj,(Obj)ARG1(arg),&r); if ( ret ) { for ( t = r, s0 = 0; t; t = NEXT(t) ) { NEXTNODE(s0,s); @@ -704,6 +732,24 @@ void do_assign(NODE arg) } } +/* [[index,fnode],...] */ + +void fnode_do_assign(NODE arg) +{ + NODE t,pair; + int pv; + FNODE f; + QUOTE value; + + for ( t = arg; t; t = NEXT(t) ) { + pair = (NODE)BDY(t); + pv = (int)BDY(pair); + f = (FNODE)(BDY(NEXT(pair))); + MKQUOTE(value,f); + ASSPV(pv,value); + } +} + /* /* consistency check and merge */ @@ -739,14 +785,14 @@ int merge_matching_node(NODE n,NODE a,NODE *rp) return 1; } -int quote_unify_node(NODE f,NODE pat,NODE *rp) { +int quote_match_node(NODE f,NODE pat,NODE *rp) { NODE r,a,tf,tp,r1; int ret; if ( length(f) != length(pat) ) return 0; r = 0; for ( tf = f, tp = pat; tf; tf = NEXT(tf), tp = NEXT(tp) ) { - ret = quote_unify((Obj)BDY(tf),(Obj)BDY(tp),&a); + ret = quote_match((Obj)BDY(tf),(Obj)BDY(tp),&a); if ( !ret ) return 0; ret = merge_matching_node(r,a,&r1); if ( !ret ) return 0; @@ -758,7 +804,7 @@ int quote_unify_node(NODE f,NODE pat,NODE *rp) { /* f = [a,b,c,...] pat = [X,Y,...] rpat matches the rest of f */ -int quote_unify_cons(NODE f,NODE pat,Obj rpat,NODE *rp) { +int quote_match_cons(NODE f,NODE pat,Obj rpat,NODE *rp) { QUOTE q; Q id; FNODE fn; @@ -770,7 +816,7 @@ int quote_unify_cons(NODE f,NODE pat,Obj rpat,NODE *rp if ( length(f) < length(pat) ) return 0; r = 0; for ( tf = f, tp = pat; tp; tf = NEXT(tf), tp = NEXT(tp) ) { - ret = quote_unify((Obj)BDY(tf),(Obj)BDY(tp),&a); + ret = quote_match((Obj)BDY(tf),(Obj)BDY(tp),&a); if ( !ret ) return 0; ret = merge_matching_node(r,a,&r1); if ( !ret ) return 0; @@ -782,7 +828,7 @@ int quote_unify_cons(NODE f,NODE pat,Obj rpat,NODE *rp MKLIST(alist,a); arg = mknode(1,alist); Pfunargs_to_quote(arg,&q); - ret = quote_unify((Obj)q,rpat,&a); + ret = quote_match((Obj)q,rpat,&a); if ( !ret ) return 0; ret = merge_matching_node(r,a,&r1); if ( !ret ) return 0; @@ -801,7 +847,7 @@ void get_quote_id_arg(QUOTE f,int *id,NODE *r) /* *rp : [[quote(A),quote(1)],...] */ -int quote_unify(Obj f, Obj pat, NODE *rp) +int quote_match(Obj f, Obj pat, NODE *rp) { NODE tf,tp,head,body; NODE parg,farg,r; @@ -820,7 +866,7 @@ int quote_unify(Obj f, Obj pat, NODE *rp) return 0; else if ( OID(pat) == O_LIST ) { if ( OID(f) == O_LIST ) - return quote_unify_node(BDY((LIST)f),BDY((LIST)pat),rp); + return quote_match_node(BDY((LIST)f),BDY((LIST)pat),rp); else return 0; } else if ( OID(pat) == O_QUOTE ) { @@ -847,10 +893,10 @@ int quote_unify(Obj f, Obj pat, NODE *rp) tp = BDY((LIST)BDY(parg)); if ( pid == I_LIST ) - return quote_unify_node(tf,tp,rp); + return quote_match_node(tf,tp,rp); else { rpat = (Obj)BDY(NEXT(parg)); - return quote_unify_cons(tf,tp,rpat,rp); + return quote_match_cons(tf,tp,rpat,rp); } case I_PVAR: @@ -866,7 +912,7 @@ int quote_unify(Obj f, Obj pat, NODE *rp) if ( id == I_FUNC ) { r = mknode(2,BDY(parg),BDY(farg)); MKLIST(l,r); head = mknode(1,l); - ret = quote_unify(BDY(NEXT(farg)), + ret = quote_match(BDY(NEXT(farg)), BDY(NEXT(parg)),&body); if ( !ret ) return 0; else return merge_matching_node(head,body,rp); @@ -894,7 +940,7 @@ int quote_unify(Obj f, Obj pat, NODE *rp) get_quote_id_arg((QUOTE)pat,&pid,&parg); get_quote_id_arg((QUOTE)f,&id,&farg); if ( compqa(CO,BDY(farg),BDY(parg)) ) return 0; - return quote_unify_node(NEXT(farg),NEXT(parg),rp); + return quote_match_node(NEXT(farg),NEXT(parg),rp); default: if ( OID(f) != O_QUOTE ) return 0; @@ -902,7 +948,7 @@ int quote_unify(Obj f, Obj pat, NODE *rp) if ( id != pid ) return 0; get_quote_id_arg((QUOTE)pat,&pid,&parg); get_quote_id_arg((QUOTE)f,&id,&farg); - return quote_unify_node(farg,parg,rp); + return quote_match_node(farg,parg,rp); } } } @@ -1268,14 +1314,14 @@ FNODE strip_paren(FNODE); void fnodetotex_tb(FNODE f,TB tb) { - NODE n,t,t0; + NODE n,t,t0,args; char vname[BUFSIZ],prefix[BUFSIZ]; char *opname,*vname_conv,*prefix_conv; Obj obj; int i,len,allzero,elen,elen2,si; C cplx; char *r; - FNODE fi,f2; + FNODE fi,f2,f1; write_tb(" ",tb); if ( !f ) { @@ -1356,6 +1402,46 @@ void fnodetotex_tb(FNODE f,TB tb) break; } break; + case I_NARYOP: + args = (NODE)FA1(f); + write_tb("(",tb); + switch ( OPNAME(f) ) { + case '+': + fnodetotex_tb((FNODE)BDY(args),tb); + for ( args = NEXT(args); args; args = NEXT(args) ) { + write_tb("+",tb); + fnodetotex_tb((FNODE)BDY(args),tb); + } + break; + case '*': + f1 = (FNODE)BDY(args); + if ( f1->id == I_FORMULA && MUNIQ(FA0(f1)) ) + write_tb("-",tb); + else + fnodetotex_tb(f1,tb); + write_tb(" ",tb); + for ( args = NEXT(args); args; args = NEXT(args) ) { + /* XXX special care for DP */ + f2 = (FNODE)BDY(args); + if ( f2->id == I_EV ) { + n = (NODE)FA0(f2); + for ( i = 0; n; n = NEXT(n), i++ ) { + fi = (FNODE)BDY(n); + if ( fi->id != I_FORMULA || FA0(fi) ) + break; + } + if ( n ) + fnodetotex_tb(f2,tb); + } else + fnodetotex_tb(f2,tb); + } + break; + default: + error("invalid nary op"); + break; + } + write_tb(")",tb); + break; case I_COP: switch( (cid)FA0(f) ) { @@ -1748,6 +1834,9 @@ int top_is_minus(FNODE f) return opname[0]=='-'; } } + case I_NARYOP: + return top_is_minus((FNODE)BDY((NODE)FA1(f))); + default: return 0; } @@ -1942,27 +2031,32 @@ void Pquote_normalize(NODE arg,QUOTE *rp) if ( !q || OID(q) != O_QUOTE ) { *rp = q; return; - } else { + } else if ( q->normalized && (q->expanded || !expand) ) + *rp = q; + else { f = fnode_normalize(BDY(q),expand); MKQUOTE(r,f); + r->normalized = 1; + if ( expand ) r->expanded = 1; *rp = r; } } void Pquote_normalize_comp(NODE arg,Q *rp) { + QUOTE q1,q2; FNODE f1,f2; int r; - f1 = BDY((QUOTE)ARG0(arg)); - f2 = BDY((QUOTE)ARG1(arg)); - f1 = fnode_normalize(f1,0); - f2 = fnode_normalize(f2,0); + q1 = (QUOTE)ARG0(arg); f1 = (FNODE)BDY(q1); + q2 = (QUOTE)ARG1(arg); f2 = (FNODE)BDY(q2); + if ( !q1->normalized ) f1 = fnode_normalize(f1,0); + if ( !q2->normalized ) f2 = fnode_normalize(f2,0); r = fnode_normalize_comp(f1,f2); STOQ(r,*rp); } -int fnode_is_number(FNODE f) +INLINE int fnode_is_number(FNODE f) { Obj obj; @@ -2125,15 +2219,18 @@ FNODE fnode_normalize(FNODE f,int expand) NODE n; Q q; + if ( f->normalized && (f->expanded || !expand) ) return f; STOQ(-1,q); mone = mkfnode(1,I_FORMULA,q); switch ( f->id ) { case I_PAREN: - return fnode_normalize(FA0(f),expand); + r = fnode_normalize(FA0(f),expand); + break; case I_MINUS: - return fnode_normalize_mul_coef((Num)q, + r = fnode_normalize_mul_coef((Num)q, fnode_normalize(FA0(f),expand),expand); + break; case I_BOP: /* arf fnode fnode */ @@ -2141,19 +2238,25 @@ FNODE fnode_normalize(FNODE f,int expand) a2 = fnode_normalize(FA2(f),expand); switch ( OPNAME(f) ) { case '+': - return fnode_normalize_add(a1,a2,expand); + r = fnode_normalize_add(a1,a2,expand); + break; case '-': a2 = fnode_normalize_mul_coef((Num)q,a2,expand); - return fnode_normalize_add(a1,a2,expand); + r = fnode_normalize_add(a1,a2,expand); + break; case '*': - return fnode_normalize_mul(a1,a2,expand); + r = fnode_normalize_mul(a1,a2,expand); + break; case '/': a2 = fnode_normalize_pwr(a2,mone,expand); - return fnode_normalize_mul(a1,a2,expand); + r = fnode_normalize_mul(a1,a2,expand); + break; case '^': - return fnode_normalize_pwr(a1,a2,expand); + r = fnode_normalize_pwr(a1,a2,expand); + break; default: - return mkfnode(3,I_BOP,FA0(f),a1,a2); + r = mkfnode(3,I_BOP,FA0(f),a1,a2); + break; } break; @@ -2166,7 +2269,7 @@ FNODE fnode_normalize(FNODE f,int expand) a1 = fnode_normalize(BDY(n),expand); r = fnode_normalize_add(r,a1,expand); } - return r; + break; case '*': n = (NODE)FA1(f); r = fnode_normalize(BDY(n),expand); n = NEXT(n); @@ -2174,14 +2277,18 @@ FNODE fnode_normalize(FNODE f,int expand) a1 = fnode_normalize(BDY(n),expand); r = fnode_normalize_mul(r,a1,expand); } - return r; + break; default: error("fnode_normallize : cannot happen"); } + break; default: return fnode_apply(f,fnode_normalize,expand); } + r->normalized = 1; + r->expanded = expand; + return r; } FNODE fnode_apply(FNODE f,FNODE (*func)(),int expand) @@ -2334,9 +2441,10 @@ FNODE fnode_normalize_mul(FNODE f1,FNODE f2,int expand FNODE fnode_normalize_pwr(FNODE f1,FNODE f2,int expand) { - FNODE b,b1,e1,e,cc,r; - Num c,c1; - NODE arg,n; + FNODE b,b1,e1,e,cc,r,mf2,mone,inv; + Num c,c1,nf2; + int ee; + NODE arg,n,t0,t1; Q q; if ( IS_ZERO(f2) ) return mkfnode(1,I_FORMULA,ONE); @@ -2355,11 +2463,24 @@ FNODE fnode_normalize_pwr(FNODE f1,FNODE f2,int expand return b1; else return mkfnode(3,I_BOP,FA0(f1),b1,e); - } else if ( IS_NARYMUL(f1) && fnode_is_integer(f2) ) { + } else if ( expand && IS_NARYMUL(f1) && fnode_is_integer(f2) ) { fnode_coef_body(f1,&c1,&b1); - pwrnum(0,(Num)c1,(Num)eval(f2),&c); + nf2 = (Num)eval(f2); + pwrnum(0,(Num)c1,nf2,&c); + ee = QTOS((Q)nf2); cc = mkfnode(1,I_FORMULA,c); - b = fnode_normalize_pwr(b1,f2,expand); + if ( fnode_is_nonnegative_integer(f2) ) + b = fnode_expand_pwr(b1,ee); + else { + STOQ(-1,q); + mone = mkfnode(1,I_FORMULA,q); + for ( t0 = 0, n = (NODE)FA1(b1); n; n = NEXT(n) ) { + inv = mkfnode(3,I_BOP,pwrfs,BDY(n),mone); + MKNODE(t1,inv,t0); t0 = t1; + } + b1 = mkfnode(2,I_NARYOP,FA0(f1),t0); + b = fnode_expand_pwr(b1,-ee); + } if ( fnode_is_one(cc) ) return b; else @@ -2612,4 +2733,262 @@ int fnode_normalize_comp_pwr(FNODE f1,FNODE f2) else if ( r < 0 ) return fnode_normalize_comp(mkfnode(1,I_FORMULA,0),e2); } else return fnode_normalize_comp(e1,e2); +} + +NODE append_node(NODE a1,NODE a2) +{ + NODE t,t0; + + if ( !a1 ) + return a2; + else { + for ( t0 = 0; a1; a1 = NEXT(a1) ) { + NEXTNODE(t0,t); BDY(t) = BDY(a1); + } + NEXT(t) = a2; + return t0; + } +} + +int fnode_normalize_match(FNODE f,FNODE pat,NODE *rp) +{ + NODE m,m1,m2,base,exp,fa,pa,n; + LIST l; + QUOTE qp,qf; + FNODE fbase,fexp,a; + FUNC ff,pf; + int r; + + switch ( pat->id ) { + case I_PVAR: + /* [[pat,f]] */ + *rp = mknode(1,mknode(2,(int)FA0(pat),f),0); + return 1; + + case I_FORMULA: + if ( !arf_comp(CO,(Obj)FA0(f),(Obj)FA0(pat)) ) { + *rp = 0; return 1; + } else + return 0; + + case I_BOP: + /* OPNAME should be "^" */ + if ( !IS_BINARYPWR(pat) ) + error("fnode_normalize_match : invalid BOP"); + if ( IS_BINARYPWR(f) ) { + fbase = FA1(f); fexp = FA2(f); + } else { + fbase = f; fexp = mkfnode(1,I_FORMULA,ONE); + } + if ( !fnode_normalize_match(fbase,FA1(pat),&base) ) return 0; + a = rewrite_fnode(FA2(pat),base); + if ( !fnode_normalize_match(fexp,a,&exp) ) return 0; + else { + *rp = append_node(base,exp); + return 1; + } + break; + + case I_FUNC: + if ( f->id != I_FUNC ) return 0; + ff = (FUNC)FA0(f); pf = (FUNC)FA0(pat); + if ( strcmp(ff->fullname,pf->fullname) ) return 0; + /* FA1(f) and FA1(pat) are I_LIST */ + fa = (NODE)FA0((FNODE)FA1(f)); + pa = (NODE)FA0((FNODE)FA1(pat)); + m = 0; + while ( fa && pa ) { + a = rewrite_fnode(BDY(pa),m); + if ( !fnode_normalize_match(BDY(fa),a,&m1) ) return 0; + m = append_node(m1,m); + fa = NEXT(fa); pa = NEXT(pa); + } + if ( fa || pa ) return 0; + else { + *rp = m; + return 1; + } + + case I_NARYOP: + if ( IS_NARYADD(pat) ) + return fnode_normalize_match_naryadd(f,pat,rp); + else if ( IS_NARYMUL(pat) ) + return fnode_normalize_match_narymul(f,pat,rp); + else + error("fnode_normalize_match : invalid NARYOP"); + break; + + default: + error("fnode_normalize_match : invalid pattern"); + } +} + +/* remove i-th element */ + +FNODE fnode_removeith_naryadd(FNODE p,int i) +{ + int k,l; + NODE t,r0,r,a; + + a = (NODE)FA1(p); + l = length(a); + if ( i < 0 || i >= l ) error("fnode_removeith_naryadd: invalid index"); + else if ( i == 0 ) + return fnode_node_to_naryadd(NEXT(a)); + else { + for ( r0 = 0, k = 0, t = a; k < i; k++, t = NEXT(t) ) { + NEXTNODE(r0,r); + BDY(r) = BDY(t); + } + t = NEXT(t); + NEXT(r) = 0; + return fnode_node_to_naryadd(r0); + } + +} + +/* a0,...,a(i-1) */ +FNODE fnode_left_narymul(FNODE p,int i) +{ + int k,l; + NODE t,r0,r,a; + + a = (NODE)FA1(p); + l = length(a); + if ( i < 0 || i >= l ) error("fnode_left_narymul : invalid index"); + if ( i == 0 ) return mkfnode(1,I_FORMULA,ONE); + else if ( i == 1 ) return (FNODE)BDY(a); + else { + for ( r0 = 0, k = 0, t = a; k < i; k++, t = NEXT(t) ) { + NEXTNODE(r0,r); + BDY(r) = BDY(t); + } + NEXT(r) = 0; + return fnode_node_to_narymul(r0); + } +} + +/* a(i+1),...,a(l-1) */ +FNODE fnode_right_narymul(FNODE p,int i) +{ + NODE a,t; + int l,k; + + a = (NODE)FA1(p); + l = length(a); + if ( i < 0 || i >= l ) error("fnode_right_narymul : invalid index"); + if ( i == l-1 ) return mkfnode(1,I_FORMULA,ONE); + else { + for ( k = 0, t = a; k <= i; k++, t = NEXT(t) ); + return fnode_node_to_narymul(t); + } +} + +int fnode_normalize_match_naryadd(FNODE f,FNODE p,NODE *rp) +{ + int fl,pl,fi,pi; + NODE fa,pa,t,s,m,m1; + FNODE fr,pr,prr,pivot; + + f = to_naryadd(f); + fa = (NODE)FA1(f); fl = length(fa); + pa = (NODE)FA1(p); pl = length(pa); + if ( fl < pl ) return 0; + else if ( pl == 1 ) { + if ( fl == 1 ) + return fnode_normalize_match(BDY(fa),BDY(pa),rp); + else + return 0; + } else { + for ( t = pa, pi = 0; t; t = NEXT(t), pi++ ) + if ( ((FNODE)BDY(t))->id != I_PVAR ) break; + if ( !t ) { + /* all are I_PVAR */ + m = 0; + for ( t = pa, s = fa; NEXT(t); t = NEXT(t), s = NEXT(s) ) { + fnode_normalize_match(BDY(s),BDY(t),&m1); + m = append_node(m1,m); + } + if ( !NEXT(s) ) + fr = (FNODE)BDY(s); + else + fr = mkfnode(2,I_NARYOP,FA0(f),s); + fnode_normalize_match(fr,BDY(t),&m1); + *rp = append_node(m1,m); + return 1; + } else { + pivot = (FNODE)BDY(t); + pr = fnode_removeith_naryadd(p,pi); + for ( s = fa, fi = 0; s; s = NEXT(s), fi++ ) { + if ( fnode_normalize_match(BDY(s),pivot,&m) ) { + fr = fnode_removeith_naryadd(f,fi); + prr = rewrite_fnode(pr,m); + if ( fnode_normalize_match(fr,prr,&m1) ) { + *rp = append_node(m,m1); + return 1; + } + } + } + return 0; + } + } +} + +int fnode_normalize_match_narymul(FNODE f,FNODE p,NODE *rp) +{ + int fl,pl,fi,pi; + NODE fa,pa,t,s,m,m1; + FNODE fr,pr,pleft,pleft1,pright,pright1,fleft,fright,pivot; + + f = to_narymul(f); + fa = (NODE)FA1(f); fl = length(fa); + pa = (NODE)FA1(p); pl = length(pa); + if ( fl < pl ) return 0; + else if ( pl == 1 ) { + if ( fl == 1 ) + return fnode_normalize_match(BDY(fa),BDY(pa),rp); + else + return 0; + } else { + for ( t = pa, pi = 0; t; t = NEXT(t), pi++ ) + if ( ((FNODE)BDY(t))->id != I_PVAR ) break; + if ( !t ) { + /* all are I_PVAR */ + m = 0; + for ( t = pa, s = fa; NEXT(t); t = NEXT(t), s = NEXT(s) ) { + pr = rewrite_fnode(BDY(t),m); + if ( !fnode_normalize_match(BDY(s),pr,&m1) ) return 0; + m = append_node(m1,m); + } + if ( !NEXT(s) ) + fr = (FNODE)BDY(s); + else + fr = mkfnode(2,I_NARYOP,FA0(f),s); + pr = rewrite_fnode(BDY(t),m); + if ( !fnode_normalize_match(fr,pr,&m1) ) return 0; + *rp = append_node(m1,m); + return 1; + } else { + pivot = (FNODE)BDY(t); + pleft = fnode_left_narymul(p,pi); + pright = fnode_right_narymul(p,pi); + /* XXX : incomplete */ + for ( s = fa, fi = 0; s; s = NEXT(s), fi++ ) { + if ( fnode_normalize_match(BDY(s),pivot,&m) ) { + fleft = fnode_left_narymul(f,fi); + pleft1 = rewrite_fnode(pleft,m); + if ( fnode_normalize_match(fleft,pleft1,&m1) ) { + m = append_node(m1,m); + fright = fnode_right_narymul(f,fi); + pright1 = rewrite_fnode(pright,m); + if ( fnode_normalize_match(fright,pright1,&m1) ) { + *rp = append_node(m1,m); + return 1; + } + } + } + } + return 0; + } + } }