===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/lib/gr,v
retrieving revision 1.3
retrieving revision 1.5
diff -u -p -r1.3 -r1.5
--- OpenXM_contrib2/asir2000/lib/gr	2000/06/05 02:26:48	1.3
+++ OpenXM_contrib2/asir2000/lib/gr	2000/08/21 08:31:41	1.5
@@ -1,4 +1,52 @@
-/* $OpenXM: OpenXM_contrib2/asir2000/lib/gr,v 1.2 2000/01/11 06:43:37 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@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/lib/gr,v 1.4 2000/07/14 08:26:40 noro Exp $ 
+*/
 extern INIT_COUNT,ITOR_FAIL$
 extern REMOTE_MATRIX,REMOTE_NF,REMOTE_VARS$
 
@@ -1307,5 +1355,77 @@ def r_ttob_gsl(L,M)
 def get_matrix()
 {
 	REMOTE_MATRIX;
+}
+
+extern NFArray$
+
+/*
+ * HL = [[c,i,m,d],...]
+ * if c != 0
+ *   g = 0
+ *   g = (c*g + m*gi)/d
+ *   ...
+ *   finally compare g with NF
+ *   if g == NF then NFArray[NFIndex] = g
+ *
+ * if c = 0 then HL consists of single history [0,i,0,0],
+ * which means that dehomogenization of NFArray[i] should be 
+ * eqall to NF.
+ */
+
+def check_trace(NF,NFIndex,HL)
+{
+	if ( !car(HL)[0] ) {
+		/* dehomogenization */
+		DH = dp_dehomo(NFArray[car(HL)[1]]);
+		if ( NF == DH ) {
+			realloc_NFArray(NFIndex);
+			NFArray[NFIndex] = NF;
+			return 0;
+		} else
+			error("check_trace(dehomo)");
+	}
+
+	for ( G = 0, T = HL; T != []; T = cdr(T) ) {
+		H = car(T);
+
+		Coeff = H[0];
+		Index = H[1];
+		Monomial = H[2];
+		Denominator = H[3];
+
+		Reducer = NFArray[Index];
+		G = (Coeff*G+Monomial*Reducer)/Denominator;
+	}
+	if ( NF == G ) {
+		realloc_NFArray(NFIndex);
+		NFArray[NFIndex] = NF;
+		return 0;
+	} else
+		error("check_trace");
+}
+
+/*
+ * realloc NFArray so that it can hold * an element as NFArray[Ind].
+ */
+
+def realloc_NFArray(Ind)
+{
+	if ( Ind == size(NFArray)[0] ) {
+		New = newvect(Ind + 100);
+		for ( I = 0; I < Ind; I++ )
+			New[I] = NFArray[I];
+		NFArray = New;
+	}
+}
+
+/*
+ * create NFArray and initialize it by List.
+ */
+
+def register_input(List)
+{
+	Len = length(List);
+	NFArray = newvect(Len+100,List);
 }
 end$