===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/dp-supp.c,v
retrieving revision 1.9
retrieving revision 1.12
diff -u -p -r1.9 -r1.12
--- OpenXM_contrib2/asir2000/builtin/dp-supp.c	2000/12/08 08:26:08	1.9
+++ OpenXM_contrib2/asir2000/builtin/dp-supp.c	2001/02/21 07:10:17	1.12
@@ -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/dp-supp.c,v 1.8 2000/12/08 06:43:09 noro Exp $ 
+ * $OpenXM: OpenXM_contrib2/asir2000/builtin/dp-supp.c,v 1.11 2000/12/13 05:37:29 noro Exp $ 
 */
 #include "ca.h"
 #include "base.h"
@@ -722,7 +722,7 @@ P *dnp;
 		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,p2,s,&t);
+	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 {
@@ -731,6 +731,8 @@ P *dnp;
 	*head = h; *rest = r; *dnp = c2;
 }
 
+struct oEGT eg_red_mod;
+
 void _dp_red_mod_destructive(p1,p2,mod,rp)
 DP p1,p2;
 int mod;
@@ -741,6 +743,7 @@ DP *rp;
 	MP m;
 	DP t,s;
 	int c,c1;
+struct oEGT t0,t1;
 
 	n = p1->nv; d1 = BDY(p1)->dl; d2 = BDY(p2)->dl;
 	_NEWDL(d,n); d->td = d1->td - d2->td;
@@ -750,7 +753,9 @@ DP *rp;
 	_NEWMP(m); m->dl = d; m->c = STOI(mod-c1); NEXT(m) = 0;
 	_MKDP(n,m,s); s->sugar = d->td;
 	_mulmd_dup(mod,s,p2,&t); _free_dp(s);
+/* get_eg(&t0); */
 	_addmd_destructive(mod,p1,t,rp);
+/* get_eg(&t1); add_eg(&eg_red_mod,&t0,&t1); */
 }
 
 /*
@@ -834,6 +839,7 @@ DP *rp;
 	int *wb;
 	int hmag;
 	int sugar,psugar;
+	int fcoef;
 
 	if ( !g ) {
 		*rp = 0; return;
@@ -842,8 +848,21 @@ DP *rp;
 	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);
+
+	/* check whether polys have coeffs in finite fields */
+	fcoef = 0;
+	for ( i = 0; i < n; i++ )
+		if ( has_fcoef(ps[wb[i]]) ) {
+			fcoef = 1;
+			break;
+		}
+	if ( has_fcoef(g) )
+		fcoef = 1;
+
+	if ( !fcoef )
+		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]]) ) {
@@ -862,12 +881,12 @@ DP *rp;
 		if ( u ) {
 			g = u;
 			if ( d ) {
-				if ( multiple && HMAG(d) > hmag ) {
+				if ( !fcoef && multiple && HMAG(d) > hmag ) {
 					dp_ptozp2(d,g,&t,&u); d = t; g = u;
 					hmag = multiple*HMAG(d);
 				}
 			} else {
-				if ( multiple && HMAG(g) > hmag ) {
+				if ( !fcoef && multiple && HMAG(g) > hmag ) {
 					dp_ptozp(g,&t); g = t;
 					hmag = multiple*HMAG(g);
 				}