Annotation of OpenXM_contrib2/asir2000/engine/C.c, Revision 1.9
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: *
1.9 ! noro 48: * $OpenXM: OpenXM_contrib2/asir2000/engine/C.c,v 1.8 2001/06/20 09:30:33 noro Exp $
1.2 noro 49: */
1.1 noro 50: #include "ca.h"
51: #include "inline.h"
52: #include "base.h"
53:
54: V up_var;
55:
56: /* binary has at least 32 leading 0 chars. */
57: void binaryton(binary,np)
58: char *binary;
59: N *np;
60: {
61: int i,w,len;
62: N n;
63: char buf[33];
64:
65: binary += strlen(binary)%32;
66: len = strlen(binary);
67: w = len/32; /* sufficient for holding binary */
68: n = NALLOC(w);
69: for ( i = 0; i < w; i++ ) {
70: strncpy(buf,binary+len-32*(i+1),32); buf[32] = 0;
71: n->b[i] = strtoul(buf,0,2);
72: }
73: for ( i = w-1; i >= 0 && !n->b[i]; i-- );
74: if ( i < 0 )
75: *np = 0;
76: else {
77: n->p = i+1;
78: *np = n;
79: }
80: }
81:
82: /* hex has at least 8 leading 0 chars. */
83: void hexton(hex,np)
84: char *hex;
85: N *np;
86: {
87: int i,w,len;
88: N n;
89: char buf[9];
90:
91: hex += strlen(hex)%8;
92: len = strlen(hex);
93: w = len/8; /* sufficient for holding hex */
94: n = NALLOC(w);
95: for ( i = 0; i < w; i++ ) {
96: strncpy(buf,hex+len-8*(i+1),8); buf[8] = 0;
97: n->b[i] = strtoul(buf,0,16);
98: }
99: for ( i = w-1; i >= 0 && !n->b[i]; i-- );
100: if ( i < 0 )
101: *np = 0;
102: else {
103: n->p = i+1;
104: *np = n;
105: }
106: }
107:
108: void ntobn(base,n,nrp)
109: int base;
110: N n,*nrp;
111: {
112: int i,d,plc;
113: unsigned int *c,*x,*w;
114: unsigned int r;
115: L m;
116: N nr;
117:
118: if ( !n ) {
119: *nrp = NULL;
120: return;
121: }
122:
123: d = PL(n);
124: w = BD(n);
125:
126: for ( i = 1, m = 1; m <= LBASE/(L)base; m *= base, i++ );
127:
128: c = (unsigned int *)W_ALLOC(d*i+1);
129: x = (unsigned int *)W_ALLOC(d+1);
130: for ( i = 0; i < d; i++ )
131: x[i] = w[i];
132: for ( plc = 0; d >= 1; plc++ ) {
133: for ( i = d - 1, r = 0; i >= 0; i-- ) {
134: DSAB((unsigned int)base,r,x[i],x[i],r)
135: }
136: c[plc] = r;
137: if ( !x[d-1] ) d--;
138: }
139:
140: *nrp = nr = NALLOC(plc); INITRC(nr);
141: PL(nr) = plc;
142: for ( i = 0; i < plc; i++ )
143: BD(nr)[i] = c[i];
144: }
145:
146: void bnton(base,n,nrp)
147: int base;
148: N n,*nrp;
149: {
150: unsigned int carry;
151: unsigned int *x,*w;
152: int i,j,d,plc;
153: N nr;
154:
155: if ( !n ) {
156: *nrp = 0;
157: return;
158: }
159:
160: d = PL(n);
161: w = BD(n);
162: x = (unsigned int *)W_ALLOC(d + 1);
163:
164: for ( plc = 0, i = d - 1; i >= 0; i-- ) {
165: for ( carry = w[i],j = 0; j < plc; j++ ) {
166: DMA(x[j],(unsigned int)base,carry,carry,x[j])
167: }
168: if ( carry ) x[plc++] = carry;
169: }
170: *nrp = nr = NALLOC(plc); INITRC(nr);
171: PL(nr) = plc;
172: for ( i = 0; i < plc; i++ )
173: BD(nr)[i] = x[i];
174: }
175:
176: void ptomp(m,p,pr)
177: int m;
178: P p;
179: P *pr;
180: {
181: DCP dc,dcr,dcr0;
182: Q q;
183: unsigned int a,b;
184: P t;
185: MQ s;
186:
187: if ( !p )
188: *pr = 0;
189: else if ( NUM(p) ) {
190: q = (Q)p;
191: a = rem(NM(q),m);
192: if ( a && (SGN(q) < 0) )
193: a = m-a;
194: b = !DN(q)?1:rem(DN(q),m);
195: if ( !b )
196: error("ptomp : denominator = 0");
197: a = dmar(a,invm(b,m),0,m); STOMQ(a,s); *pr = (P)s;
198: } else {
199: for ( dc = DC(p), dcr0 = 0; dc; dc = NEXT(dc) ) {
200: ptomp(m,COEF(dc),&t);
201: if ( t ) {
202: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); COEF(dcr) = t;
203: }
204: }
205: if ( !dcr0 )
206: *pr = 0;
207: else {
208: NEXT(dcr) = 0; MKP(VR(p),dcr0,*pr);
209: }
210: }
211: }
212:
213: void mptop(f,gp)
214: P f;
215: P *gp;
216: {
217: DCP dc,dcr,dcr0;
218: Q q;
219:
220: if ( !f )
221: *gp = 0;
222: else if ( NUM(f) )
223: STOQ(CONT((MQ)f),q),*gp = (P)q;
224: else {
225: for ( dc = DC(f), dcr0 = 0; dc; dc = NEXT(dc) ) {
226: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); mptop(COEF(dc),&COEF(dcr));
1.4 noro 227: }
228: NEXT(dcr) = 0; MKP(VR(f),dcr0,*gp);
229: }
230: }
231:
1.7 noro 232: void ptosfp(p,pr)
233: P p;
234: P *pr;
235: {
236: DCP dc,dcr,dcr0;
237: GFS a;
238: P t;
239:
240: if ( !p )
241: *pr = 0;
242: else if ( NUM(p) ) {
243: qtogfs((Q)p,&a); *pr = (P)a;
244: } else {
245: for ( dc = DC(p), dcr0 = 0; dc; dc = NEXT(dc) ) {
246: ptosfp(COEF(dc),&t);
247: if ( t ) {
248: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); COEF(dcr) = t;
249: }
250: }
251: if ( !dcr0 )
252: *pr = 0;
253: else {
254: NEXT(dcr) = 0; MKP(VR(p),dcr0,*pr);
255: }
256: }
257: }
258:
1.4 noro 259: void sfptop(f,gp)
260: P f;
261: P *gp;
262: {
263: DCP dc,dcr,dcr0;
264: Q q;
1.5 noro 265: MQ fq;
1.4 noro 266:
267: if ( !f )
268: *gp = 0;
269: else if ( NUM(f) ) {
1.5 noro 270: gfstomq((GFS)f,&fq);
271: STOQ(CONT(fq),q);
272: *gp = (P)q;
1.4 noro 273: } else {
274: for ( dc = DC(f), dcr0 = 0; dc; dc = NEXT(dc) ) {
275: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); sfptop(COEF(dc),&COEF(dcr));
1.1 noro 276: }
277: NEXT(dcr) = 0; MKP(VR(f),dcr0,*gp);
1.7 noro 278: }
279: }
280:
281: void sf_galois_action(p,e,pr)
282: P p;
283: Q e;
284: P *pr;
285: {
286: DCP dc,dcr,dcr0;
287: GFS a;
288: P t;
289:
290: if ( !p )
291: *pr = 0;
292: else if ( NUM(p) ) {
293: gfs_galois_action(p,e,&a); *pr = (P)a;
294: } else {
295: for ( dc = DC(p), dcr0 = 0; dc; dc = NEXT(dc) ) {
296: sf_galois_action(COEF(dc),e,&t);
297: if ( t ) {
298: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); COEF(dcr) = t;
299: }
300: }
301: if ( !dcr0 )
302: *pr = 0;
303: else {
304: NEXT(dcr) = 0; MKP(VR(p),dcr0,*pr);
305: }
1.1 noro 306: }
307: }
308:
309: void ptolmp(p,pr)
310: P p;
311: P *pr;
312: {
313: DCP dc,dcr,dcr0;
314: LM a;
315: P t;
316:
317: if ( !p )
318: *pr = 0;
319: else if ( NUM(p) ) {
320: qtolm((Q)p,&a); *pr = (P)a;
321: } else {
322: for ( dc = DC(p), dcr0 = 0; dc; dc = NEXT(dc) ) {
323: ptolmp(COEF(dc),&t);
324: if ( t ) {
325: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); COEF(dcr) = t;
326: }
327: }
328: if ( !dcr0 )
329: *pr = 0;
330: else {
331: NEXT(dcr) = 0; MKP(VR(p),dcr0,*pr);
332: }
333: }
334: }
335:
336: void lmptop(f,gp)
337: P f;
338: P *gp;
339: {
340: DCP dc,dcr,dcr0;
341: Q q;
342:
343: if ( !f )
344: *gp = 0;
345: else if ( NUM(f) ) {
346: NTOQ(((LM)f)->body,1,q); *gp = (P)q;
347: } else {
348: for ( dc = DC(f), dcr0 = 0; dc; dc = NEXT(dc) ) {
349: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc); lmptop(COEF(dc),&COEF(dcr));
350: }
351: NEXT(dcr) = 0; MKP(VR(f),dcr0,*gp);
352: }
353: }
354:
355: void ptoum(m,f,wf)
356: int m;
357: P f;
358: UM wf;
359: {
360: unsigned int r;
361: int i;
362: DCP dc;
363:
364: for ( i = UDEG(f); i >= 0; i-- )
365: COEF(wf)[i] = 0;
366:
367: for ( dc = DC(f); dc; dc = NEXT(dc) ) {
368: r = rem(NM((Q)COEF(dc)),m);
369: if ( r && (SGN((Q)COEF(dc)) < 0) )
370: r = m-r;
371: COEF(wf)[QTOS(DEG(dc))] = r;
372: }
373: degum(wf,UDEG(f));
374: }
375:
376: void umtop(v,w,f)
377: V v;
378: UM w;
379: P *f;
380: {
381: int *c;
382: DCP dc,dc0;
383: int i;
384: Q q;
385:
386: if ( DEG(w) < 0 )
387: *f = 0;
388: else if ( DEG(w) == 0 )
389: STOQ(COEF(w)[0],q), *f = (P)q;
390: else {
391: for ( i = DEG(w), c = COEF(w), dc0 = 0; i >= 0; i-- )
392: if ( c[i] ) {
393: NEXTDC(dc0,dc);
394: STOQ(i,DEG(dc));
395: STOQ(c[i],q), COEF(dc) = (P)q;
1.8 noro 396: }
397: NEXT(dc) = 0;
398: MKP(v,dc0,*f);
399: }
400: }
401:
402: void ptosfum(f,wf)
403: P f;
404: UM wf;
405: {
406: GFS c;
407: int i;
408: DCP dc;
1.9 ! noro 409:
! 410: if ( OID(f) == O_N ) {
! 411: DEG(wf) = 0;
! 412: COEF(wf)[0] = FTOIF(CONT((GFS)f));
! 413: return;
! 414: }
1.8 noro 415:
416: for ( i = UDEG(f); i >= 0; i-- )
417: COEF(wf)[i] = 0;
418:
419: for ( dc = DC(f); dc; dc = NEXT(dc) ) {
420: c = (GFS)COEF(dc);
421: if ( c )
422: COEF(wf)[QTOS(DEG(dc))] = FTOIF(CONT(c));
423: }
424: degum(wf,UDEG(f));
425: }
426:
427: void sfumtop(v,w,f)
428: V v;
429: UM w;
430: P *f;
431: {
432: int *c;
433: DCP dc,dc0;
434: int i,t;
435: GFS q;
436:
437: if ( DEG(w) < 0 )
438: *f = 0;
439: else if ( DEG(w) == 0 ) {
440: t = COEF(w)[0];
441: t = IFTOF(t);
442: MKGFS(t,q);
443: *f = (P)q;
444: } else {
445: for ( i = DEG(w), c = COEF(w), dc0 = 0; i >= 0; i-- )
446: if ( c[i] ) {
447: NEXTDC(dc0,dc);
448: STOQ(i,DEG(dc));
449: t = COEF(w)[i];
450: t = IFTOF(t);
451: MKGFS(t,q);
452: COEF(dc) = (P)q;
1.1 noro 453: }
454: NEXT(dc) = 0;
455: MKP(v,dc0,*f);
456: }
457: }
458:
459: void ptoup(n,nr)
460: P n;
461: UP *nr;
462: {
463: DCP dc;
464: UP r;
465: int d;
466:
467: if ( !n )
468: *nr = 0;
469: else if ( OID(n) == O_N ) {
470: *nr = r = UPALLOC(0);
471: DEG(r) = 0; COEF(r)[0] = (Num)n;
472: } else {
473: d = UDEG(n);
474: up_var = VR(n);
475: *nr = r = UPALLOC(d); DEG(r) = d;
476: for ( dc = DC(n); dc; dc = NEXT(dc) ) {
477: COEF(r)[QTOS(DEG(dc))] = (Num)COEF(dc);
478: }
479: }
480: }
481:
482: void uptop(n,nr)
483: UP n;
484: P *nr;
485: {
486: int i;
487: DCP dc0,dc;
488:
489: if ( !n )
490: *nr = 0;
491: else if ( !DEG(n) )
492: *nr = (P)COEF(n)[0];
493: else {
494: for ( i = DEG(n), dc0 = 0; i >= 0; i-- )
495: if ( COEF(n)[i] ) {
496: NEXTDC(dc0,dc); STOQ(i,DEG(dc)); COEF(dc) = (P)COEF(n)[i];
497: }
498: if ( !up_var )
499: up_var = CO->v;
500: MKP(up_var,dc0,*nr);
501: }
502: }
503:
504: void ulmptoum(m,f,wf)
505: int m;
506: UP f;
507: UM wf;
508: {
509: int i,d;
510: LM *c;
511:
512: if ( !f )
513: wf->d = -1;
514: else {
515: wf->d = d = f->d;
516: c = (LM *)f->c;
517: for ( i = 0, d = f->d; i <= d; i++ )
518: COEF(wf)[i] = rem(c[i]->body,m);
519: }
520: }
521:
522: void objtobobj(base,p,rp)
523: int base;
524: Obj p;
525: Obj *rp;
526: {
527: if ( !p )
528: *rp = 0;
529: else
530: switch ( OID(p) ) {
531: case O_N:
532: numtobnum(base,(Num)p,(Num *)rp); break;
533: case O_P:
534: ptobp(base,(P)p,(P *)rp); break;
535: case O_LIST:
536: listtoblist(base,(LIST)p,(LIST *)rp); break;
537: case O_VECT:
538: vecttobvect(base,(VECT)p,(VECT *)rp); break;
539: case O_MAT:
540: mattobmat(base,(MAT)p,(MAT *)rp); break;
541: case O_STR:
542: *rp = p; break;
543: case O_COMP: default:
544: error("objtobobj : not implemented"); break;
545: }
546: }
547:
548: void bobjtoobj(base,p,rp)
549: int base;
550: Obj p;
551: Obj *rp;
552: {
553: if ( !p )
554: *rp = 0;
555: else
556: switch ( OID(p) ) {
557: case O_N:
558: bnumtonum(base,(Num)p,(Num *)rp); break;
559: case O_P:
560: bptop(base,(P)p,(P *)rp); break;
561: case O_LIST:
562: blisttolist(base,(LIST)p,(LIST *)rp); break;
563: case O_VECT:
564: bvecttovect(base,(VECT)p,(VECT *)rp); break;
565: case O_MAT:
566: bmattomat(base,(MAT)p,(MAT *)rp); break;
567: case O_STR:
568: *rp = p; break;
569: case O_COMP: default:
570: error("bobjtoobj : not implemented"); break;
571: }
572: }
573:
574: void numtobnum(base,p,rp)
575: int base;
576: Num p;
577: Num *rp;
578: {
579: N nm,dn,body;
580: Q q;
581: LM l;
582:
583: if ( !p )
584: *rp = 0;
585: else
586: switch ( NID(p) ) {
587: case N_Q:
588: ntobn(base,NM((Q)p),&nm);
589: if ( DN((Q)p) ) {
590: ntobn(base,DN((Q)p),&dn);
591: NDTOQ(nm,dn,SGN((Q)p),q);
592: } else
593: NTOQ(nm,SGN((Q)p),q);
594: *rp = (Num)q;
595: break;
596: case N_R:
597: *rp = p; break;
598: case N_LM:
599: ntobn(base,((LM)p)->body,&body);
600: MKLM(body,l); *rp = (Num)l;
601: break;
602: default:
603: error("numtobnum : not implemented"); break;
604: }
605: }
606:
607: void bnumtonum(base,p,rp)
608: int base;
609: Num p;
610: Num *rp;
611: {
612: N nm,dn,body;
613: Q q;
614: LM l;
615:
616: if ( !p )
617: *rp = 0;
618: else
619: switch ( NID(p) ) {
620: case N_Q:
621: bnton(base,NM((Q)p),&nm);
622: if ( DN((Q)p) ) {
623: bnton(base,DN((Q)p),&dn);
624: NDTOQ(nm,dn,SGN((Q)p),q);
625: } else
626: NTOQ(nm,SGN((Q)p),q);
627: *rp = (Num)q;
628: break;
629: case N_R:
630: *rp = p; break;
631: case N_LM:
632: bnton(base,((LM)p)->body,&body);
633: MKLM(body,l); *rp = (Num)l;
634: break;
635: default:
636: error("bnumtonum : not implemented"); break;
637: }
638: }
639:
640: void ptobp(base,p,rp)
641: int base;
642: P p;
643: P *rp;
644: {
645: DCP dcr0,dcr,dc;
646:
647: if ( !p )
648: *rp = p;
649: else {
650: for ( dcr0 = 0, dc = DC(p); dc; dc = NEXT(dc) ) {
651: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc);
652: objtobobj(base,(Obj)COEF(dc),(Obj *)&COEF(dcr));
653: }
654: NEXT(dcr) = 0;
655: MKP(VR(p),dcr0,*rp);
656: }
657: }
658:
659: void bptop(base,p,rp)
660: int base;
661: P p;
662: P *rp;
663: {
664: DCP dcr0,dcr,dc;
665:
666: if ( !p )
667: *rp = p;
668: else {
669: for ( dcr0 = 0, dc = DC(p); dc; dc = NEXT(dc) ) {
670: NEXTDC(dcr0,dcr); DEG(dcr) = DEG(dc);
671: bobjtoobj(base,(Obj)COEF(dc),(Obj *)&COEF(dcr));
672: }
673: NEXT(dcr) = 0;
674: MKP(VR(p),dcr0,*rp);
675: }
676: }
677:
678: void listtoblist(base,p,rp)
679: int base;
680: LIST p;
681: LIST *rp;
682: {
683: NODE nr0,nr,n;
684:
685: if ( !p )
686: *rp = p;
687: else {
688: for ( nr0 = 0, n = BDY(p); n; n = NEXT(n) ) {
689: NEXTNODE(nr0,nr);
690: objtobobj(base,BDY(n),(Obj *)&BDY(nr));
691: }
692: NEXT(nr) = 0;
693: MKLIST(*rp,nr0);
694: }
695: }
696:
697: void blisttolist(base,p,rp)
698: int base;
699: LIST p;
700: LIST *rp;
701: {
702: NODE nr0,nr,n;
703:
704: if ( !p )
705: *rp = p;
706: else {
707: for ( nr0 = 0, n = BDY(p); n; n = NEXT(n) ) {
708: NEXTNODE(nr0,nr);
709: bobjtoobj(base,BDY(n),(Obj *)&BDY(nr));
710: }
711: NEXT(nr) = 0;
712: MKLIST(*rp,nr0);
713: }
714: }
715:
716: void vecttobvect(base,p,rp)
717: int base;
718: VECT p;
719: VECT *rp;
720: {
721: int i,l;
722: VECT r;
723:
724: if ( !p )
725: *rp = p;
726: else {
727: l = p->len;
728: MKVECT(r,l); *rp = r;
729: for ( i = 0; i < l; i++ )
730: objtobobj(base,p->body[i],(Obj *)&r->body[i]);
731: }
732: }
733:
734: void bvecttovect(base,p,rp)
735: int base;
736: VECT p;
737: VECT *rp;
738: {
739: int i,l;
740: VECT r;
741:
742: if ( !p )
743: *rp = p;
744: else {
745: l = p->len;
746: MKVECT(r,l); *rp = r;
747: for ( i = 0; i < l; i++ )
748: bobjtoobj(base,p->body[i],(Obj *)&r->body[i]);
749: }
750: }
751:
752: void mattobmat(base,p,rp)
753: int base;
754: MAT p;
755: MAT *rp;
756: {
757: int row,col,i,j;
758: MAT r;
759:
760: if ( !p )
761: *rp = p;
762: else {
763: row = p->row; col = p->col;
764: MKMAT(r,row,col); *rp = r;
765: for ( i = 0; i < row; i++ )
766: for ( j = 0; i < col; j++ )
767: objtobobj(base,p->body[i][j],(Obj *)&r->body[i][j]);
768: }
769: }
770:
771: void bmattomat(base,p,rp)
772: int base;
773: MAT p;
774: MAT *rp;
775: {
776: int row,col,i,j;
777: MAT r;
778:
779: if ( !p )
780: *rp = p;
781: else {
782: row = p->row; col = p->col;
783: MKMAT(r,row,col); *rp = r;
784: for ( i = 0; i < row; i++ )
785: for ( j = 0; i < col; j++ )
786: bobjtoobj(base,p->body[i][j],(Obj *)&r->body[i][j]);
787: }
788: }
789:
790: void n32ton27(g,rp)
791: N g;
792: N *rp;
793: {
794: int i,j,k,l,r,bits,words;
795: unsigned int t;
796: unsigned int *a,*b;
797: N z;
798:
799: l = PL(g); a = BD(g);
800: for ( i = 31, t = a[l-1]; !(t&(1<<i)); i-- );
801: bits = (l-1)*32+i+1; words = (bits+26)/27;
802: *rp = z = NALLOC(words); PL(z) = words;
803: bzero((char *)BD(z),words*sizeof(unsigned int));
804: for ( j = 0, b = BD(z); j < words; j++ ) {
805: k = (27*j)/32; r = (27*j)%32;
806: if ( r > 5 )
807: b[j] = (a[k]>>r)|(k==(l-1)?0:((a[k+1]&((1<<(r-5))-1))<<(32-r)));
808: else
809: b[j] = (a[k]>>r)&((1<<27)-1);
810: }
811: if ( !(r = bits%27) )
812: r = 27;
813: b[words-1] &= ((1<<r)-1);
814: }
815:
816: void n27ton32(a,rp)
817: N a;
818: N *rp;
819: {
820: int i,j,k,l,r,bits,words;
821: unsigned int t;
822: unsigned int *b,*c;
823: N z;
824:
825: l = PL(a); b = BD(a);
826: for ( i = 26, t = b[l-1]; !(t&(1<<i)); i-- );
827: bits = (l-1)*27+i+1; words = (bits+31)/32;
828: *rp = z = NALLOC(words); PL(z) = words;
829: bzero((char *)BD(z),words*sizeof(unsigned int));
830: for ( j = 0, c = BD(z); j < l; j++ ) {
831: k = (27*j)/32; r = (27*j)%32;
832: if ( r > 5 ) {
833: c[k] |= (b[j]&((1<<(32-r))-1))<<r;
834: if ( k+1 < words )
835: c[k+1] = (b[j]>>(32-r));
836: } else
837: c[k] |= (b[j]<<r);
838: }
839: }
840:
841: void mptoum(p,pr)
842: P p;
843: UM pr;
844: {
845: DCP dc;
846:
847: if ( !p )
848: DEG(pr) = -1;
849: else if ( NUM(p) ) {
850: DEG(pr) = 0; COEF(pr)[0] = CONT((MQ)p);
851: } else {
852: bzero((char *)pr,(int)((UDEG(p)+2)*sizeof(int)));
853: for ( dc = DC(p); dc; dc = NEXT(dc) )
854: COEF(pr)[QTOS(DEG(dc))] = CONT((MQ)COEF(dc));
855: degum(pr,UDEG(p));
856: }
857: }
858:
859: void umtomp(v,p,pr)
860: V v;
861: UM p;
862: P *pr;
863: {
864: DCP dc,dc0;
865: int i;
866: MQ q;
867:
868: if ( !p || (DEG(p) < 0) )
869: *pr = 0;
870: else if ( !DEG(p) )
871: STOMQ(COEF(p)[0],q), *pr = (P)q;
872: else {
873: for ( dc0 = 0, i = DEG(p); i >= 0; i-- )
874: if ( COEF(p)[i] ) {
875: NEXTDC(dc0,dc); STOQ(i,DEG(dc));
876: STOMQ(COEF(p)[i],q), COEF(dc) = (P)q;
877: }
878: NEXT(dc) = 0; MKP(v,dc0,*pr);
879: }
1.6 noro 880: }
881:
882: /* f(p) -> f(x) */
883:
884: void enc_to_p(p,a,v,pr)
885: int p,a;
886: V v;
887: P *pr;
888: {
889: DCP dc,dct;
890: int i,c;
891: Q dq,cq;
892:
893: dc = 0;
894: for ( i = 0; a; i++, a /= p ) {
895: c = a%p;
896: if ( c ) {
897: STOQ(i,dq); STOQ(c,cq);
898: NEWDC(dct); DEG(dct) = dq; COEF(dct) = (P)cq;
899: NEXT(dct) = dc; dc = dct;
900: }
901: }
902: MKP(v,dc,*pr);
1.1 noro 903: }
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