===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/int.c,v
retrieving revision 1.3
retrieving revision 1.7
diff -u -p -r1.3 -r1.7
--- OpenXM_contrib2/asir2000/builtin/int.c	2000/02/07 05:21:32	1.3
+++ OpenXM_contrib2/asir2000/builtin/int.c	2000/12/08 02:39:05	1.7
@@ -1,4 +1,52 @@
-/* $OpenXM: OpenXM_contrib2/asir2000/builtin/int.c,v 1.2 2000/01/11 06:43:35 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/builtin/int.c,v 1.6 2000/12/05 01:24:50 noro Exp $ 
+*/
 #include "ca.h"
 #include "parse.h"
 #include "base.h"
@@ -453,6 +501,35 @@ LIST *rp;
 	MKNODE(n1,r,0); MKNODE(n0,q,n1); MKLIST(*rp,n0);
 }
 
+/*
+ * gcd = GCD(a,b), ca = a/g, cb = b/g
+ */
+
+void igcd_cofactor(a,b,gcd,ca,cb)
+Q a,b;
+Q *gcd,*ca,*cb;
+{
+	N gn,tn;
+	
+	if ( !a ) {
+		if ( !b )
+			error("igcd_cofactor : invalid input");
+		else {
+			*ca = 0;
+			*cb = ONE;
+			*gcd = b;
+		}
+	} else if ( !b ) {
+		*ca = ONE;
+		*cb = 0;
+		*gcd = a;
+	} else {
+		gcdn(NM(a),NM(b),&gn); NTOQ(gn,1,*gcd);
+		divsn(NM(a),gn,&tn); NTOQ(tn,SGN(a),*ca);
+		divsn(NM(b),gn,&tn); NTOQ(tn,SGN(b),*cb);
+	}
+}
+
 void igcdv(a,rp)
 VECT a;
 Q *rp;
@@ -820,7 +897,7 @@ Q *rp;
 	UTOQ(r,*rp);
 }
 
-#if defined(VISUAL) || defined(THINK_C)
+#if defined(VISUAL)
 void srandom(unsigned int);
 
 static unsigned int R_Next;