===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/engine/RU.c,v
retrieving revision 1.1
retrieving revision 1.5
diff -u -p -r1.1 -r1.5
--- OpenXM_contrib2/asir2000/engine/RU.c	1999/12/03 07:39:08	1.1
+++ OpenXM_contrib2/asir2000/engine/RU.c	2018/03/29 01:32:51	1.5
@@ -1,69 +1,121 @@
-/* $OpenXM: OpenXM/src/asir99/engine/RU.c,v 1.1.1.1 1999/11/10 08:12:26 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/engine/RU.c,v 1.4 2002/07/26 00:33:02 noro Exp $ 
+*/
 #include "ca.h"
 
 int qcoefr(r)
 Obj r;
 {
-	if ( !r )
-		return 1;
-	else
-		switch ( OID(r) ) {
-			case O_N:
-				return RATN(r)?1:0; break;
-			case O_P:
-				return qcoefp(r); break;
-			default:
-				return qcoefp((Obj)NM((R)r))&&qcoefp((Obj)DN((R)r)); break;
-		}
+  if ( !r )
+    return 1;
+  else
+    switch ( OID(r) ) {
+      case O_N:
+        return RATN(r)?1:0; break;
+      case O_P:
+        return qcoefp(r); break;
+      default:
+        return qcoefp((Obj)NM((R)r))&&qcoefp((Obj)DN((R)r)); break;
+    }
 }
 
 int qcoefp(p)
 Obj p;
 {
-	DCP dc;
+  DCP dc;
 
-	if ( !p )
-		return 1;
-	else
-		switch ( OID(p) ) {
-			case O_N:
-				return RATN(p)?1:0; break;
-			default:
-				for ( dc = DC((P)p); dc; dc = NEXT(dc) )
-					if ( !qcoefp((Obj)COEF(dc)) )
-						return 0;
-				return 1; break;
-		}
+  if ( !p )
+    return 1;
+  else
+    switch ( OID(p) ) {
+      case O_N:
+        return RATN(p)?1:0; break;
+      default:
+        for ( dc = DC((P)p); dc; dc = NEXT(dc) )
+          if ( !qcoefp((Obj)COEF(dc)) )
+            return 0;
+        return 1; break;
+    }
 }
 
 void reductr(vl,p,r)
 VL vl;
 Obj p,*r;
 {
-	P t,s,u,cnm,cdn,pnm,pdn;
-	R a;
+  P t,s,u,cnm,cdn,pnm,pdn;
+  R a;
 
-	if ( !p )
-		*r = 0;
-	else if ( OID(p) <= O_P )
-		*r = p;
-	else if ( ((R)p)->reduced )
-		*r = p;
-	else if ( NUM(DN((R)p)) )
-		divsp(vl,NM((R)p),DN((R)p),(P *)r);
-	else if ( qcoefp((Obj)NM((R)p)) && qcoefp((Obj)DN((R)p)) ) {
-		ptozp(NM((R)p),1,(Q *)&cnm,&pnm); ptozp(DN((R)p),1,(Q *)&cdn,&pdn);
-		ezgcdpz(vl,pnm,pdn,&t); 
-		divsp(vl,NM((R)p),t,&u); divsp(vl,DN((R)p),t,&s);
-		if ( NUM(s) )
-			divsp(vl,u,s,(P *)r);
-		else {
-			divsp(vl,u,cdn,&pnm); divsp(vl,s,cdn,&pdn); 
-			MKRAT(pnm,pdn,1,a); *r = (Obj)a;
-		}
-	} else {
-		MKRAT(NM((R)p),DN((R)p),1,a); *r = (Obj)a;
-	}
+  if ( !p )
+    *r = 0;
+  else if ( OID(p) <= O_P )
+    *r = p;
+  else if ( ((R)p)->reduced )
+    *r = p;
+  else if ( NUM(DN((R)p)) )
+    divsp(vl,NM((R)p),DN((R)p),(P *)r);
+  else if ( qcoefp((Obj)NM((R)p)) && qcoefp((Obj)DN((R)p)) ) {
+    ptozp(NM((R)p),1,(Q *)&cnm,&pnm); ptozp(DN((R)p),1,(Q *)&cdn,&pdn);
+    ezgcdpz(vl,pnm,pdn,&t); 
+    divsp(vl,NM((R)p),t,&u); divsp(vl,DN((R)p),t,&s);
+    if ( NUM(s) )
+      divsp(vl,u,s,(P *)r);
+    else {
+      divsp(vl,u,cdn,&pnm); divsp(vl,s,cdn,&pdn); 
+      if ( headsgn(pdn) < 0 ) {
+        chsgnp(pnm,&t); pnm = t;
+        chsgnp(pdn,&t); pdn = t;
+      }
+      MKRAT(pnm,pdn,1,a); *r = (Obj)a;
+    }
+  } else {
+    MKRAT(NM((R)p),DN((R)p),1,a); *r = (Obj)a;
+  }
 }
 
 void pderivr(vl,a,v,b)
@@ -71,35 +123,35 @@ VL vl;
 V v;
 Obj a,*b;
 {
-	P t,s,u;
-	R r;
+  P t,s,u;
+  R r;
 
-	if ( !a )
-		*b = 0;
-	else if ( OID(a) <= O_P )
-		diffp(vl,(P)a,v,(P *)b); 
-	else {
-		diffp(vl,NM((R)a),v,&t); mulp(vl,t,DN((R)a),&s);
-		diffp(vl,DN((R)a),v,&t); mulp(vl,t,NM((R)a),&u);
-		subp(vl,s,u,&t);
-		if ( t ) {
-			mulp(vl,DN((R)a),DN((R)a),&u); MKRAT(t,u,0,r); *b = (Obj)r;
-		} else 
-			*b = 0;
-	}
+  if ( !a )
+    *b = 0;
+  else if ( OID(a) <= O_P )
+    diffp(vl,(P)a,v,(P *)b); 
+  else {
+    diffp(vl,NM((R)a),v,&t); mulp(vl,t,DN((R)a),&s);
+    diffp(vl,DN((R)a),v,&t); mulp(vl,t,NM((R)a),&u);
+    subp(vl,s,u,&t);
+    if ( t ) {
+      mulp(vl,DN((R)a),DN((R)a),&u); MKRAT(t,u,0,r); *b = (Obj)r;
+    } else 
+      *b = 0;
+  }
 }
 
 void clctvr(vl,p,nvl)
 VL vl,*nvl;
 Obj p;
 {
-	VL vl1,vl2;
+  VL vl1,vl2;
 
-	if ( !p )
-		*nvl = 0;
-	else if ( OID(p) <= O_P )
-		clctv(vl,(P)p,nvl);
-	else {
-		clctv(vl,NM((R)p),&vl1); clctv(vl,DN((R)p),&vl2); mergev(vl,vl1,vl2,nvl);
-	}
+  if ( !p )
+    *nvl = 0;
+  else if ( OID(p) <= O_P )
+    clctv(vl,(P)p,nvl);
+  else {
+    clctv(vl,NM((R)p),&vl1); clctv(vl,DN((R)p),&vl2); mergev(vl,vl1,vl2,nvl);
+  }
 }