=================================================================== RCS file: /home/cvs/OpenXM_contrib2/asir2000/engine/NEZ.c,v retrieving revision 1.1.1.1 retrieving revision 1.6 diff -u -p -r1.1.1.1 -r1.6 --- OpenXM_contrib2/asir2000/engine/NEZ.c 1999/12/03 07:39:08 1.1.1.1 +++ OpenXM_contrib2/asir2000/engine/NEZ.c 2010/02/19 08:27:19 1.6 @@ -1,4 +1,52 @@ -/* $OpenXM: OpenXM/src/asir99/engine/NEZ.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/NEZ.c,v 1.5 2006/12/03 01:04:10 noro Exp $ +*/ #include "ca.h" void nezgcdnpz(vl,ps,m,pr) @@ -17,6 +65,9 @@ int m; P **cp; int *cn; + if ( m == 1 ) { + *pr = ps[0]; return; + } pl = (P *)ALLOCA(m*sizeof(P)); ml = (DCP *)ALLOCA(m*sizeof(DCP)); cl = (Q *)ALLOCA(m*sizeof(Q)); @@ -263,9 +314,9 @@ P p0,*ps,*pr; P *tps; VL nvl1,nvl2,nvl,tvl; V v; - int i,j,k,d0,dg,dg0,dmin; - VN vn0,vn1,vnt; - int nv,flag; + int i,j,k,d0,dg,dg0,dmin,z; + VN vn1; + int nv,flag,max; /* set-up */ if ( NUM(p0) ) { @@ -300,20 +351,20 @@ P p0,*ps,*pr; mulp(nvl,p0,lg,&lgp0); k = dbound(v,lgp0)+1; cbound(nvl,lgp0,(Q *)&cbd); for ( nv = 0, tvl = nvl; tvl; tvl = NEXT(tvl), nv++ ); - W_CALLOC(nv,struct oVN,vn0); W_CALLOC(nv,struct oVN,vnt); W_CALLOC(nv,struct oVN,vn1); for ( i = 0, tvl = NEXT(nvl); tvl; tvl = NEXT(tvl), i++ ) - vn1[i].v = vn0[i].v = tvl->v; + vn1[i].v = tvl->v; /* main loop */ - for ( dg = deg(v,tps[0]) + 1; ; next(vn0) ) - do { - for ( i = 0, j = 0; vn0[i].v; i++ ) - if ( vn0[i].n ) vnt[j++].v = (V)i; - vnt[j].n = 0; + /* finally, 'max' random evaluations will be generated */ + for ( max = 1, dg = deg(v,tps[0]) + 1; ; max = 2*max ) + for ( z = 0; z < max; z++ ) { + for ( i = 0; vn1[i].v; i++ ) + vn1[i].n = mt_genrand()%max; /* find b s.t. LC(p0)(b), LC(tps[i])(b) != 0 */ - mulsgn(vn0,vnt,j,vn1); substvp(nvl,p0,vn1,&p00); + + substvp(nvl,p0,vn1,&p00); flag = (!zerovpchk(nvl,lp0,vn1) && sqfrchk(p00)); for ( i = 0; flag && (i < m); i++ ) flag &= (!zerovpchk(nvl,LC(tps[i]),vn1)); @@ -346,7 +397,7 @@ P p0,*ps,*pr; } } } - } while ( !nextbin(vnt,j) ); + } } void intersectv(vl1,vl2,vlp) @@ -445,5 +496,23 @@ P p; for ( dc = DC(p), n = 0; dc; dc = NEXT(dc) ) n += lengthp(COEF(dc)); return n; + } +} + +int nonzero_const_term(P p) +{ + DCP dc; + + if ( !p ) + return 0; + else if ( NUM(p) ) + return 1; + else { + dc = DC(p); + for ( ; NEXT(dc); dc = NEXT(dc) ); + if ( DEG(dc) ) + return 0; + else + return nonzero_const_term(COEF(dc)); } }