===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/engine/PD.c,v
retrieving revision 1.1
retrieving revision 1.5
diff -u -p -r1.1 -r1.5
--- OpenXM_contrib2/asir2000/engine/PD.c	1999/12/03 07:39:08	1.1
+++ OpenXM_contrib2/asir2000/engine/PD.c	2001/10/09 01:36:11	1.5
@@ -1,4 +1,52 @@
-/* $OpenXM: OpenXM/src/asir99/engine/PD.c,v 1.1.1.1 1999/11/10 08:12:26 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/engine/PD.c,v 1.4 2001/03/29 09:49:57 noro Exp $ 
+*/
 #ifndef FBASE
 #define FBASE
 #endif
@@ -121,11 +169,7 @@ P p1,p2,*q;
 }
 
 #ifdef FBASE
-void plisttop(f,v,n,gp)
-P *f;
-V v;
-int n;
-P *gp;
+void plisttop(P *f,V v,int n,P *gp)
 {
 	int i;
 	DCP dc,dc0;
@@ -150,9 +194,9 @@ P *gp;
 	}
 }
 
-int divtpz(vl,p1,p2,q)
-VL vl;
-P p1,p2,*q;
+/* for multivariate polynomials over fields */
+
+int divtp(VL vl,P p1,P p2,P *q)
 {
 	register int i,j;
 	register DCP dc1,dc2,dc;
@@ -164,6 +208,107 @@ P p1,p2,*q;
 
 	if ( !p1 ) {
 		*q = 0;
+		return 1;
+	} else if ( NUM(p2) ) {
+		divsp(vl,p1,p2,q);
+		return 1;
+	} else if ( NUM(p1) ) {
+		*q = 0;
+		return 0;
+	} else if ( ( v1 = VR(p1) ) == ( v2 = VR(p2) ) ) {
+		dc1 = DC(p1); dc2 = DC(p2);
+		deg1 = DEG(dc1); deg2 = DEG(dc2);
+		sgn = cmpq(deg1,deg2);
+		if ( sgn == 0 )
+			if ( !divtp(vl,COEF(dc1),COEF(dc2),&m) ) {
+				*q = 0;
+				return 0;
+			} else {
+				mulp(vl,p2,m,&m1); subp(vl,p1,m1,&s); 
+				if ( !s ) {
+					*q = m;
+					return 1;
+				} else {
+					*q = 0;
+					return 0;
+				}
+			}	
+		else if ( sgn < 0 ) {
+			*q = 0;
+			return 0;
+		} else {
+			if ( (PL(NM(deg1)) > 1) ) {
+				error("divtp : invalid input");
+				*q = 0;
+				return ( 0 );
+			}
+			d1 = QTOS(deg1); d2 = QTOS(deg2); 
+			W_CALLOC(d1-d2,P,pq); W_CALLOC(d1,P,pr); W_CALLOC(d2,P,pd);
+			for ( dc = dc1; dc; dc = NEXT(dc) ) 
+				pr[QTOS(DEG(dc))] = COEF(dc);
+			for ( dc = dc2; dc; dc = NEXT(dc) ) 
+				pd[QTOS(DEG(dc))] = COEF(dc);
+			for ( dvr = COEF(dc2), i = d1 - d2; i >= 0; i-- ) 
+				if ( !pr[i+d2] ) 
+					continue;
+				else if ( !divtp(vl,pr[i+d2],dvr,&m) ) {
+					*q = 0;
+					return 0;
+				} else {
+					pq[i] = m;
+					for ( j = d2; j >= 0; j-- ) {
+						mulp(vl,pq[i],pd[j],&m);
+						subp(vl,pr[i + j],m,&s); pr[i + j] = s;
+					}
+				}
+			plisttop(pq,v1,d1 - d2,&m); plisttop(pr,v1,d1 - 1,&t);
+			if ( t ) {
+				*q = 0;
+				return 0;
+			} else {
+				*q = m;
+				return 1;
+			}
+		}
+	} else {
+		for ( ; (v1 != vl->v) && (v2 != vl->v); vl = NEXT(vl) );
+		if ( v2 == vl->v ) {
+			*q = 0;
+			return 0;
+		} else 
+			return divtdcp(vl,p1,p2,q);
+	}
+}
+
+int divtdcp(VL vl,P p1,P p2,P *q)
+{
+
+	P m;
+	register DCP dc,dcr,dcr0;
+
+	for ( dc = DC(p1), dcr0 = 0; dc; dc = NEXT(dc) ) 
+		if ( !divtp(vl,COEF(dc),p2,&m) ) {
+			*q = 0;
+			return 0;
+		} else {
+			NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); COEF(dcr) = m; NEXT(dcr) = 0;
+		}
+	MKP(VR(p1),dcr0,*q);
+	return 1;
+}
+
+int divtpz(VL vl,P p1,P p2,P *q)
+{
+	register int i,j;
+	register DCP dc1,dc2,dc;
+	P m,m1,s,dvr,t;
+	P *pq,*pr,*pd;
+	V v1,v2;
+	Q deg1,deg2;
+	int d1,d2,sgn;
+
+	if ( !p1 ) {
+		*q = 0;
 		return ( 1 );
 	} else if ( NUM(p2) ) 
 		if ( NUM(p1) ) {
@@ -252,9 +397,7 @@ P p1,p2,*q;
 	}
 }
 
-int divtdcpz(vl,p1,p2,q)
-VL vl;
-P p1,p2,*q;
+int divtdcpz(VL vl,P p1,P p2,P *q)
 {
 
 	P m;
@@ -271,8 +414,7 @@ P p1,p2,*q;
 	return ( 1 );
 }
 
-void udivpz(f1,f2,fqp,frp)
-P f1,f2,*fqp,*frp;
+void udivpz(P f1,P f2,P *fqp,P *frp)
 {
 	register int n1,n2,i,j;
 	Q *pq,*pr,*pd,d,m,s,q;
@@ -337,10 +479,7 @@ P f1,f2,*fqp,*frp;
 	plisttop((P *)pq,VR(f1),n1-n2,fqp); plisttop((P *)pr,VR(f1),n2-1,frp);
 }
 
-void udivpwm(mod,p1,p2,q,r)
-Q mod;
-P p1,p2;
-P *q,*r;
+void udivpwm(Q mod,P p1,P p2,P *q,P *r)
 {
 	P s,t,u,tq,tr;
 
@@ -349,9 +488,7 @@ P *q,*r;
 	cmp(mod,tr,r); mulpq(tq,t,&s); cmp(mod,s,q); 
 }
 
-void udivpzwm(mod,f1,f2,fqp,frp)
-Q mod;
-P f1,f2,*fqp,*frp;
+void udivpzwm(Q mod,P f1,P f2,P *fqp,P *frp)
 {
 	register int n1,n2,i,j;
 	Q *pq,*pr,*pd,d,m,s,q;