Annotation of OpenXM_contrib2/asir2018/engine/PDM.c, Revision 1.1
1.1 ! 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
! 26: * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
! 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: *
! 48: * $OpenXM$
! 49: */
! 50: #ifndef MODULAR
! 51: #define MODULAR
! 52: #endif
! 53:
! 54: #include "b.h"
! 55: #include "ca.h"
! 56:
! 57: #include "polydiv.c"
! 58:
! 59: int divtmp(VL vl,int mod,P p1,P p2,P *q)
! 60: {
! 61: register int i,j;
! 62: register DCP dc1,dc2,dc;
! 63: P m,m1,s,dvr,t;
! 64: P *pq,*pr,*pd;
! 65: V v1,v2;
! 66: Z 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 = cmpz(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 ( !smallz(deg1) ) {
! 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:
! 143: int divtdcmp(VL vl,int mod,P p1,P p2,P *q)
! 144: {
! 145:
! 146: P m;
! 147: register DCP dc,dcr,dcr0;
! 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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