===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/parse/arith.c,v
retrieving revision 1.1.1.1
retrieving revision 1.18
diff -u -p -r1.1.1.1 -r1.18
--- OpenXM_contrib2/asir2000/parse/arith.c	1999/12/03 07:39:11	1.1.1.1
+++ OpenXM_contrib2/asir2000/parse/arith.c	2004/12/18 16:50:10	1.18
@@ -1,4 +1,52 @@
-/* $OpenXM: OpenXM/src/asir99/parse/arith.c,v 1.2 1999/11/18 05:42:02 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/parse/arith.c,v 1.17 2004/08/18 00:17:02 noro Exp $ 
+*/
 #include "ca.h"
 #include "parse.h"
 
@@ -18,20 +66,31 @@ ARF addfs, subfs, mulfs, divfs, remfs, pwrfs;
 void divsdc();
 
 struct oAFUNC afunc[] = {
-/* ??? */	{0,0,0,0,0,0,0},
-/* O_N */	{addnum,subnum,mulnum,divnum,pwrnum,chsgnnum,compnum},
-/* O_P */	{addp,subp,mulp,divr,pwrp,chsgnp,compp},
-/* O_R */	{addr,subr,mulr,divr,pwrr,chsgnr,compr},
-/* O_LIST */	{notdef,notdef,notdef,notdef,notdef,notdef,complist},
-/* O_VECT */	{addvect,subvect,mulvect,divvect,notdef,chsgnvect,compvect},
-/* O_MAT */	{addmat,submat,mulmat,divmat,pwrmat,chsgnmat,compmat},
-/* O_STR */	{addstr,notdef,notdef,notdef,notdef,notdef,compstr},
-/* O_COMP */	{addcomp,subcomp,mulcomp,divcomp,pwrcomp,chsgncomp,compcomp},
-/* O_DP */   {addd,subd,muld,divsdc,notdef,chsgnd,compd},
-/* O_UI */	{notdef,notdef,notdef,notdef,notdef,notdef,compui},
-/* O_GF2MAT */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
-/* O_ERR */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
-/* O_GFMMAT */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* ???=0 */	{0,0,0,0,0,0,0},
+/* O_N=1 */	{addnum,subnum,mulnum,divnum,pwrnum,chsgnnum,compnum},
+/* O_P=2 */	{addp,subp,mulp,divr,pwrp,chsgnp,compp},
+/* O_R=3 */	{addr,subr,mulr,divr,pwrr,chsgnr,compr},
+/* O_LIST=4 */	{notdef,notdef,notdef,notdef,notdef,notdef,complist},
+/* O_VECT=5 */	{addvect,subvect,mulvect,divvect,notdef,chsgnvect,compvect},
+/* O_MAT=6 */	{addmat,submat,mulmat,divmat,pwrmat,chsgnmat,compmat},
+/* O_STR=7 */	{addstr,notdef,notdef,notdef,notdef,notdef,compstr},
+/* O_COMP=8 */	{addcomp,subcomp,mulcomp,divcomp,pwrcomp,chsgncomp,compcomp},
+/* O_DP=9 */   {addd,subd,muld,divsdc,notdef,chsgnd,compd},
+/* O_USINT=10 */	{notdef,notdef,notdef,notdef,notdef,notdef,compui},
+/* O_ERR=11 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_GF2MAT=12 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_MATHCAP=13 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_F=14 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_GFMMAT=15 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_BYTEARRAY=16 */	{notdef,notdef,notdef,notdef,notdef,notdef,compbytearray},
+/* O_QUOTE=17 */	{addquote,subquote,mulquote,divquote,pwrquote,chsgnquote,(int(*)())notdef},
+/* O_OPTLIST=18 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_SYMBOL=19 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_RANGE=20 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_TB=21 */	{notdef,notdef,notdef,notdef,notdef,notdef,(int(*)())notdef},
+/* O_DPV=22 */	{adddv,subdv,muldv,notdef,notdef,chsgndv,compdv},
+/* ???=23 */	{0,0,0,0,0,0,0},
+/* O_MAT=24 */	{AddMatI,SubMatI,MulMatG,notdef,notdef,ChsgnI,notdef},
 };
 
 void arf_init() {
@@ -57,6 +116,8 @@ Obj a,b,*r;
 		(*afunc[OID(a)].add)(vl,a,b,r);
 	else if ( (mid = MAX(OID(a),OID(b))) <= O_R )
 		(*afunc[mid].add)(vl,a,b,r);
+	else if ( (mid = MAX(OID(a),OID(b))) == O_DP && MIN(OID(a),OID(b)) <= O_R )
+		(*afunc[mid].add)(vl,a,b,r);
 	else
 		notdef(vl,a,b,r);
 }
@@ -78,6 +139,8 @@ Obj a,b,*r;
 		(*afunc[OID(a)].sub)(vl,a,b,r);
 	else if ( (mid = MAX(OID(a),OID(b))) <= O_R )
 		(*afunc[mid].sub)(vl,a,b,r);
+	else if ( (mid = MAX(OID(a),OID(b))) == O_DP && MIN(OID(a),OID(b)) <= O_R )
+		(*afunc[mid].sub)(vl,a,b,r);
 	else
 		notdef(vl,a,b,r);
 }
@@ -86,17 +149,65 @@ void arf_mul(vl,a,b,r)
 VL vl;
 Obj a,b,*r;
 {
-	int mid;
+	int mid,aid,bid;
 
-	if ( !a || !b )
+	if ( !a && !b )
 		*r = 0;
-	else if ( OID(a) == OID(b) )
-		(*(afunc[OID(a)].mul))(vl,a,b,r);
-	else if ( (mid = MAX(OID(a),OID(b))) <= O_R || 
-		(mid == O_MAT) || (mid == O_VECT) || (mid == O_DP) )
+	else if ( !a || !b ) {
+		if ( !a ) a = b;
+		/* compute a*0 */
+		if ( OID(a) == O_MAT || OID(a) == O_VECT )
+			(*(afunc[O_MAT].mul))(vl,a,0,r);
+		else if ( OID(a) == O_IMAT )
+			(*(afunc[O_IMAT].mul))(vl,0,a,r);
+		else
+			*r = 0;
+	} else if ( (aid = OID(a)) == (bid = OID(b)) )
+		(*(afunc[aid].mul))(vl,a,b,r);
+	else if ( (mid = MAX(aid,bid)) <= O_R )
 		(*afunc[mid].mul)(vl,a,b,r);
-	else
-		notdef(vl,a,b,r);
+	else {
+		switch ( aid ) {
+			case O_N: case O_P:
+				(*afunc[mid].mul)(vl,a,b,r);
+				break;
+			case O_R:
+				/* rat * something; bid > O_R */
+				if ( bid == O_VECT || bid == O_MAT )
+					(*afunc[mid].mul)(vl,a,b,r);
+				else 
+					notdef(vl,a,b,r);
+				break;
+			case O_MAT:
+				if ( bid <= O_R || bid == O_VECT || bid == O_DP )
+					(*afunc[O_MAT].mul)(vl,a,b,r);
+				else
+					notdef(vl,a,b,r);
+				break;
+			case O_VECT:
+				if ( bid <= O_R || bid == O_DP )
+					(*afunc[O_VECT].mul)(vl,a,b,r);
+				else if ( bid == O_MAT )
+					(*afunc[O_MAT].mul)(vl,a,b,r);
+				else
+					notdef(vl,a,b,r);
+				break;
+			case O_DP:
+				if ( bid <= O_P )
+					(*afunc[O_DP].mul)(vl,a,b,r);
+				else if ( bid == O_MAT || bid == O_VECT || bid == O_DPV )
+					(*afunc[bid].mul)(vl,a,b,r);
+				else
+					notdef(vl,a,b,r);
+				break;
+			case O_IMAT:
+				(*afunc[O_IMAT].mul)(vl,a,b,r);
+				break;
+			default:
+					notdef(vl,a,b,r);
+				break;
+		}
+	}
 }
 
 void arf_div(vl,a,b,r)
@@ -132,22 +243,45 @@ Obj a,b,*r;
 		notdef(vl,a,b,r);
 }
 
+int allow_laurent;
+
 void arf_pwr(vl,a,e,r)
 VL vl;
 Obj a,e,*r;
 {
 	R t;
 
-	if ( !a )
-		*r = 0;
-	else if ( !e )
-		*r = (pointer)ONE;
-	else if ( (OID(e) <= O_N) && INT(e) ) {
+	if ( !a ) {
+		if ( !e )
+			*r = (pointer)ONE;
+		else if ( RATN(e) && SGN((Q)e)>0 )
+			*r = 0;
+		else
+			mkpow(vl,a,e,r);
+	} else if ( OID(a) == O_QUOTE )
+		(*(afunc[O_QUOTE].pwr))(vl,a,e,r);
+	else if ( !e ) {
+		if ( OID(a) == O_MAT )
+			(*(afunc[O_MAT].pwr))(vl,a,e,r);
+		else	
+			*r = (pointer)ONE;
+	} else if ( (OID(e) <= O_N) && INT(e) ) {
 		if ( (OID(a) == O_P) && (SGN((Q)e) < 0) ) {
-			MKRAT((P)a,(P)ONE,1,t);
-			(*(afunc[O_R].pwr))(vl,t,e,r);
+			if ( allow_laurent )
+				(*(afunc[O_P].pwr))(vl,a,e,r);
+			else {
+				MKRAT((P)a,(P)ONE,1,t);
+				(*(afunc[O_R].pwr))(vl,t,e,r);
+			}
 		} else
 			(*(afunc[OID(a)].pwr))(vl,a,e,r);
+	} else if ( (OID(e) <= O_N) && RATN(e) ) {
+		if ( (OID(a) == O_P) && allow_laurent )
+			(*(afunc[O_P].pwr))(vl,a,e,r);
+		else if ( OID(a) <= O_R )
+			mkpow(vl,a,e,r);
+		else
+			notdef(vl,a,e,r);
 	} else if ( OID(a) <= O_R )
 		mkpow(vl,a,e,r);
 	else
@@ -184,7 +318,7 @@ int complist(vl,a,b)
 VL vl;
 LIST a,b;
 {
-	int i,t;
+	int t;
 	NODE an,bn;
 
 	if ( !a )
@@ -194,10 +328,11 @@ LIST a,b;
 			return -1;
 	else if ( !b )
 		return 1;
-	for ( i = 0, an = BDY(a); an; i++, an = NEXT(an) );
-	for ( an = BDY(b); an; i--, an = NEXT(an) );
-	if ( i )
-		return i > 0 ? 1 : -1;
+	for ( an = BDY(a), bn = BDY(b); an && bn; an = NEXT(an), bn = NEXT(bn) );
+	if ( an && !bn )
+		return 1;
+	else if ( !an && bn )
+		return -1;
 	for ( an = BDY(a), bn = BDY(b); an; an = NEXT(an), bn = NEXT(bn) )
 		if ( t = arf_comp(vl,BDY(an),BDY(bn)) )
 			return t;