===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/array.c,v
retrieving revision 1.14
retrieving revision 1.20
diff -u -p -r1.14 -r1.20
--- OpenXM_contrib2/asir2000/builtin/array.c	2001/09/04 05:14:03	1.14
+++ OpenXM_contrib2/asir2000/builtin/array.c	2001/09/17 03:33:57	1.20
@@ -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/array.c,v 1.13 2001/06/07 05:14:48 noro Exp $ 
+ * $OpenXM: OpenXM_contrib2/asir2000/builtin/array.c,v 1.19 2001/09/17 02:47:07 noro Exp $
 */
 #include "ca.h"
 #include "base.h"
@@ -67,6 +67,7 @@ void mat_to_gfmmat(MAT,unsigned int,GFMMAT *);
 
 int generic_gauss_elim_mod(int **,int,int,int,int *);
 int generic_gauss_elim(MAT ,MAT *,Q *,int **,int **);
+void reduce_sp_by_red_mod_compress (int *,CDP *,int *,int,int,int);
 
 int gauss_elim_mod(int **,int,int,int);
 int gauss_elim_mod1(int **,int,int,int);
@@ -1303,7 +1304,7 @@ int md;
 					ONE_STEP1 ONE_STEP1 ONE_STEP1 ONE_STEP1
 					ONE_STEP1 ONE_STEP1 ONE_STEP1 ONE_STEP1
 				}
-				for ( ; k >= 0; k-- ) {
+				for ( ; k > 0; k-- ) {
 					if ( zzz = *s ) { DMAR(zzz,hc,*tj,md,*tj) } tj++; s++;
 				}
 			}
@@ -1390,25 +1391,147 @@ int md;
 			hc = md-hc;
 			s = redmat[i]+j;
 			tj = sp+j;
-			for ( k = col-j; k >= 0; k-- ) {
+			for ( k = col-j; k > 0; k-- ) {
 				if ( zzz = *s ) { DMAR(zzz,hc,*tj,md,*tj) } tj++; s++;
 			}
 		}
 	}
 }
 
+/*
+	rlist : reducers list 
+	ht(BDY(rlist)) < ht(BDY(NEXT(rlist)) < ...  w.r.t. the term order
+*/
+
+void reduce_reducers_mod_compress(rlist,nred,at,col,md,redmatp,indredp)
+NODE rlist;
+int nred;
+DL *at;
+int col,md;
+CDP **redmatp;
+int **indredp;
+{
+	CDP *redmat;
+	CDP t;
+	int *indred,*w;
+	int i,k;
+	NODE r;
+
+	*redmatp = redmat = (CDP *)CALLOC(nred,sizeof(CDP));
+	*indredp = indred = (int *)CALLOC(nred,sizeof(int));
+	w = (int *)CALLOC(col,sizeof(int));
+
+	_dpmod_to_vect_compress(BDY(rlist),at,&redmat[0]);
+	indred[0] = redmat[0]->body[0].index;
+
+	for ( i = 1, r = NEXT(rlist); i < nred; i++, r = NEXT(r) ) {
+		bzero(w,col*sizeof(int));
+		_dpmod_to_vect(BDY(r),at,w);
+		reduce_sp_by_red_mod_compress(w,redmat,indred,i,col,md);
+		compress_vect(w,col,&redmat[i]);
+		indred[i] = redmat[i]->body[0].index;
+	}
+}
+
+/*
+	mat[i] : compressed reducers (i=0,...,nred-1)
+	mat[0] < mat[1] < ... < mat[nred-1] w.r.t the term order
+*/
+
+int red_by_compress(m,p,r,hc,len)
+int m;
+unsigned int *p;
+register struct oCM *r;
+unsigned int hc;
+register int len;
+{
+	unsigned int up,lo;
+	unsigned int dmy;
+	unsigned int *pj;
+
+	p[r->index] = 0; r++;
+	for ( len--; len; len--, r++ ) {
+		pj = p+r->index;
+		DMA(r->c,hc,*pj,up,lo);
+		if ( up ) {
+			DSAB(m,up,lo,dmy,*pj);
+		} else
+			*pj = lo;
+	}
+}
+
+/* p -= hc*r */
+
+int red_by_vect(m,p,r,hc,len)
+int m;
+unsigned int *p,*r;
+unsigned int hc;
+int len;
+{
+	register unsigned int up,lo;
+	unsigned int dmy;
+
+	*p++ = 0; r++; len--;
+	for ( ; len; len--, r++, p++ )
+		if ( *r ) {
+			DMA(*r,hc,*p,up,lo);
+			if ( up ) {
+				DSAB(m,up,lo,dmy,*p);
+			} else
+				*p = lo;
+		}
+}
+
+void reduce_sp_by_red_mod_compress (sp,redmat,ind,nred,col,md)
+int *sp;
+CDP *redmat;
+int *ind;
+int nred,col;
+int md;
+{
+	int i,j,k,len;
+	unsigned int *tj;
+	CDP ri;
+	unsigned int hc,up,lo,up1,lo1,c;
+	unsigned int *usp;
+	struct oCM *rib;
+
+	usp = (unsigned int *)sp;
+	/* reduce the spolys by redmat */
+	for ( i = nred-1; i >= 0; i-- ) {
+		/* reduce sp by redmat[i] */
+		usp[ind[i]] %= md;
+		if ( hc = usp[ind[i]] ) {
+			/* sp = sp-hc*redmat[i] */
+			hc = md-hc;
+			ri = redmat[i];
+			len = ri->len;
+			red_by_compress(md,usp,ri->body,hc,len);
+		}
+	}
+	for ( i = 0; i < col; i++ )
+		if ( usp[i] >= md )
+			usp[i] %= md;
+}
+
 #define ONE_STEP2  if ( zzz = *pk ) { DMAR(zzz,a,*tk,md,*tk) } pk++; tk++;
 
-int generic_gauss_elim_mod(mat,row,col,md,colstat)
-int **mat;
+int generic_gauss_elim_mod(mat0,row,col,md,colstat)
+int **mat0;
 int row,col,md;
 int *colstat;
 {
 	int i,j,k,l,inv,a,rank,zzz;
-	int *t,*pivot,*pk,*tk;
+	unsigned int *t,*pivot,*pk,*tk;
+	unsigned int **mat;
 
+	mat = (unsigned int **)mat0;
 	for ( rank = 0, j = 0; j < col; j++ ) {
-		for ( i = rank; i < row && !mat[i][j]; i++ );
+		for ( i = rank; i < row; i++ )
+			mat[i][j] %= md;
+		for ( i = rank; i < row; i++ )
+			if ( mat[i][j] )
+				break;
 		if ( i == row ) {
 			colstat[j] = 0;
 			continue;
@@ -1421,35 +1544,14 @@ int *colstat;
 		inv = invm(pivot[j],md);
 		for ( k = j, pk = pivot+k; k < col; k++, pk++ )
 			if ( *pk ) {
+				if ( *pk >= md )
+					*pk %= md;
 				DMAR(*pk,inv,0,md,*pk)
 			}
 		for ( i = rank+1; i < row; i++ ) {
 			t = mat[i];
-			if ( a = t[j] ) {
-				a = md - a; pk = pivot+j; tk = t+j;
-				k = col-j;
-				for ( ; k >= 64; k -= 64 ) {
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-				}
-				for ( ; k >= 0; k -- ) {
-					if ( zzz = *pk ) { DMAR(zzz,a,*tk,md,*tk) } pk++; tk++;
-				}
-			}
+			if ( a = t[j] )
+				red_by_vect(md,t+j,pivot+j,md-a,col-j);
 		}
 		rank++;
 	}
@@ -1458,33 +1560,19 @@ int *colstat;
 			pivot = mat[l];
 			for ( i = 0; i < l; i++ ) {
 				t = mat[i];
-				if ( a = t[j] ) {
-					a = md-a; pk = pivot+j; tk = t+j;
-					k = col-j;
-					for ( ; k >= 64; k -= 64 ) {
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					ONE_STEP2 ONE_STEP2 ONE_STEP2 ONE_STEP2
-					}
-					for ( ; k >= 0; k -- ) {
-						if ( zzz = *pk ) { DMAR(zzz,a,*tk,md,*tk) } pk++; tk++;
-					}
-				}
+				t[j] %= md;
+				if ( a = t[j] )
+					red_by_vect(md,t+j,pivot+j,md-a,col-j);
 			}
 			l--;
+		}
+	for ( j = 0, l = 0; l < rank; j++ )
+		if ( colstat[j] ) {
+			t = mat[l];
+			for ( k = j; k < col; k++ )
+				if ( t[k] >= md )
+					t[k] %= md;
+			l++;
 		}
 	return rank;
 }