Annotation of OpenXM_contrib2/asir2000/engine/PDM.c, Revision 1.6
1.2 noro 1: /*
2: * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED
3: * All rights reserved.
4: *
5: * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
6: * non-exclusive and royalty-free license to use, copy, modify and
7: * redistribute, solely for non-commercial and non-profit purposes, the
8: * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
9: * conditions of this Agreement. For the avoidance of doubt, you acquire
10: * only a limited right to use the SOFTWARE hereunder, and FLL or any
11: * third party developer retains all rights, including but not limited to
12: * copyrights, in and to the SOFTWARE.
13: *
14: * (1) FLL does not grant you a license in any way for commercial
15: * purposes. You may use the SOFTWARE only for non-commercial and
16: * non-profit purposes only, such as academic, research and internal
17: * business use.
18: * (2) The SOFTWARE is protected by the Copyright Law of Japan and
19: * international copyright treaties. If you make copies of the SOFTWARE,
20: * with or without modification, as permitted hereunder, you shall affix
21: * to all such copies of the SOFTWARE the above copyright notice.
22: * (3) An explicit reference to this SOFTWARE and its copyright owner
23: * shall be made on your publication or presentation in any form of the
24: * results obtained by use of the SOFTWARE.
25: * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
1.3 noro 26: * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
1.2 noro 27: * for such modification or the source code of the modified part of the
28: * SOFTWARE.
29: *
30: * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
31: * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
32: * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
33: * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
34: * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
35: * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
36: * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
37: * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
38: * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
39: * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
40: * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
41: * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
42: * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
43: * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
44: * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
45: * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
46: * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
47: *
1.6 ! noro 48: * $OpenXM: OpenXM_contrib2/asir2000/engine/PDM.c,v 1.5 2001/10/09 01:36:11 noro Exp $
1.2 noro 49: */
1.1 noro 50: #ifndef MODULAR
51: #define MODULAR
52: #endif
53:
54: #include "b.h"
55: #include "ca.h"
56:
1.6 ! noro 57: #include "polydiv.c"
1.4 noro 58:
1.5 noro 59: int divtmp(VL vl,int mod,P p1,P p2,P *q)
1.4 noro 60: {
1.5 noro 61: register int i,j;
1.4 noro 62: register DCP dc1,dc2,dc;
63: P m,m1,s,dvr,t;
64: P *pq,*pr,*pd;
65: V v1,v2;
66: Q deg1,deg2;
67: int d1,d2,sgn;
68:
69: if ( !p1 ) {
70: *q = 0;
71: return 1;
72: } else if ( NUM(p2) ) {
73: divsmp(vl,mod,p1,p2,q);
74: return 1;
75: } else if ( NUM(p1) ) {
76: *q = 0;
77: return 0;
78: } else if ( ( v1 = VR(p1) ) == ( v2 = VR(p2) ) ) {
79: dc1 = DC(p1); dc2 = DC(p2);
80: deg1 = DEG(dc1); deg2 = DEG(dc2);
81: sgn = cmpq(deg1,deg2);
82: if ( sgn == 0 )
83: if ( !divtmp(vl,mod,COEF(dc1),COEF(dc2),&m) ) {
84: *q = 0;
85: return 0;
86: } else {
87: mulmp(vl,mod,p2,m,&m1); submp(vl,mod,p1,m1,&s);
88: if ( !s ) {
89: *q = m;
90: return 1;
91: } else {
92: *q = 0;
93: return 0;
94: }
95: }
96: else if ( sgn < 0 ) {
97: *q = 0;
98: return 0;
99: } else {
100: if ( (PL(NM(deg1)) > 1) ) {
101: error("divtmp : invalid input");
102: *q = 0;
103: return ( 0 );
104: }
105: d1 = QTOS(deg1); d2 = QTOS(deg2);
106: W_CALLOC(d1-d2,P,pq); W_CALLOC(d1,P,pr); W_CALLOC(d2,P,pd);
107: for ( dc = dc1; dc; dc = NEXT(dc) )
108: pr[QTOS(DEG(dc))] = COEF(dc);
109: for ( dc = dc2; dc; dc = NEXT(dc) )
110: pd[QTOS(DEG(dc))] = COEF(dc);
111: for ( dvr = COEF(dc2), i = d1 - d2; i >= 0; i-- )
112: if ( !pr[i+d2] )
113: continue;
114: else if ( !divtmp(vl,mod,pr[i+d2],dvr,&m) ) {
115: *q = 0;
116: return 0;
117: } else {
118: pq[i] = m;
119: for ( j = d2; j >= 0; j-- ) {
120: mulmp(vl,mod,pq[i],pd[j],&m);
121: submp(vl,mod,pr[i + j],m,&s); pr[i + j] = s;
122: }
123: }
124: plisttop(pq,v1,d1 - d2,&m); plisttop(pr,v1,d1 - 1,&t);
125: if ( t ) {
126: *q = 0;
127: return 0;
128: } else {
129: *q = m;
130: return 1;
131: }
132: }
133: } else {
134: for ( ; (v1 != vl->v) && (v2 != vl->v); vl = NEXT(vl) );
135: if ( v2 == vl->v ) {
136: *q = 0;
137: return 0;
138: } else
139: return divtdcmp(vl,mod,p1,p2,q);
140: }
141: }
142:
1.5 noro 143: int divtdcmp(VL vl,int mod,P p1,P p2,P *q)
1.4 noro 144: {
145:
146: P m;
1.5 noro 147: register DCP dc,dcr,dcr0;
1.4 noro 148:
149: for ( dc = DC(p1), dcr0 = 0; dc; dc = NEXT(dc) )
150: if ( !divtmp(vl,mod,COEF(dc),p2,&m) ) {
151: *q = 0;
152: return 0;
153: } else {
154: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); COEF(dcr) = m; NEXT(dcr) = 0;
155: }
156: MKP(VR(p1),dcr0,*q);
157: return 1;
158: }
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