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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
! 26: * e-mail at risa-admin@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: OpenXM_contrib2/asir2000/engine/lmi.c,v 1.1.1.1 1999/12/03 07:39:08 noro Exp $
! 49: */
1.1 noro 50: #include "ca.h"
51: #include "base.h"
52: #include "inline.h"
53:
54: typedef struct oGEN_LM {
55: int id;
56: N dense;
57: N sparse;
58: int bit;
59: unsigned int lower;
60: } *GEN_LM;
61:
62: void pwrlm0(N,N,N *);
63: void gen_simpn(N,N*);
64: void gen_simpn_force(N,N*);
65:
66: int lm_lazy;
67:
68: static GEN_LM current_mod_lm;
69:
70: void random_lm(r)
71: LM *r;
72: {
73: N n,t;
74:
75: if ( !current_mod_lm )
76: error("random_lm : current_mod_lm is not set");
77: randomn(current_mod_lm->bit+1,&n);
78: gen_simpn_force(n,&t);
79: MKLM(t,*r);
80: }
81:
82: void ntosparsen(p,bits)
83: N p;
84: N *bits;
85: {
86: int l,i,j,nz;
87: N r;
88: unsigned int *pb,*rb;
89: if ( !p )
90: *bits = 0;
91: else {
92: l = n_bits(p);
93: pb = BD(p);
94: for ( i = l-1, nz = 0; i >= 0; i-- )
95: if ( pb[i>>5]&(1<<i&31) ) nz++;
96: *bits = r = NALLOC(nz); PL(r) = nz;
97: rb = BD(r);
98: for ( i = l-1, j = 0; i >= 0; i-- )
99: if ( pb[i>>5]&(1<<i&31) )
100: rb[j++] = i;
101: }
102: }
103:
104: void setmod_lm(p)
105: N p;
106: {
107: int i;
108:
109: if ( !current_mod_lm )
110: current_mod_lm = (GEN_LM)MALLOC(sizeof(struct oGEN_LM));
111: bzero((char *)current_mod_lm,sizeof(struct oGEN_LM));
112: current_mod_lm->dense = p;
113: ntosparsen(p,¤t_mod_lm->sparse);
114: current_mod_lm->bit = n_bits(p);
115: current_mod_lm->id = UP2_DENSE; /* use ordinary rep. by default */
116: if ( !(current_mod_lm->bit%32) ) {
117: for ( i = PL(p)-1; i >= 1; i-- )
118: if ( BD(p)[i] != 0xffffffff )
119: break;
120: if ( !i ) {
121: current_mod_lm->lower = (unsigned int)((((UL)1)<<32)-((UL)BD(p)[0]));
122: current_mod_lm->id = UP2_SPARSE; /* XXX */
123: }
124: }
125: }
126:
127: void getmod_lm(p)
128: N *p;
129: {
130: if ( !current_mod_lm )
131: *p = 0;
132: else
133: *p = current_mod_lm->dense;
134: }
135:
136: void simplm(n,r)
137: LM n;
138: LM *r;
139: {
140: N rem;
141:
142: if ( !n )
143: *r = 0;
144: else if ( NID(n) != N_LM )
145: *r = n;
146: else {
147: gen_simpn(n->body,&rem);
148: MKLM(rem,*r);
149: }
150: }
151:
152: void qtolm(q,l)
153: Q q;
154: LM *l;
155: {
156: N rn;
157: LM a,b,c;
158:
159: if ( !q || (OID(q)==O_N && ((NID(q) == N_LM) || (NID(q) == N_GFPN))) ) { /* XXX */
160: *l = (LM)q;
161: } else if ( OID(q) == O_N && NID(q) == N_Q ) {
162: gen_simpn(NM(q),&rn); MKLM(rn,a);
163: if ( SGN(q) < 0 ) {
164: chsgnlm(a,&c); a = c;
165: }
166: if ( DN(q) ) {
167: gen_simpn_force(DN(q),&rn); MKLM(rn,b);
168: if ( !b )
169: error("qtolm : invalid denominator");
170: divlm(a,b,l);
171: } else
172: *l = a;
173: } else
174: error("qtolm : invalid argument");
175: }
176:
177: #define NZLM(a) ((a)&&(NID(a)==N_LM))
178:
179: void addlm(a,b,c)
180: LM a,b;
181: LM *c;
182: {
183: int s;
184: N t,t1;
185: LM z;
186:
187: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
188: if ( !a )
189: *c = b;
190: else if ( !b )
191: *c = a;
192: else {
193: addn(a->body,b->body,&t);
194: gen_simpn(t,&t1);
195: MKLM(t1,*c);
196: }
197: }
198:
199: void sublm(a,b,c)
200: LM a,b;
201: LM *c;
202: {
203: int s;
204: N t,t1,mod;
205: LM z;
206:
207: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
208: if ( !b )
209: *c = a;
210: else if ( !a )
211: chsgnlm(b,c);
212: else {
213: s = subn(a->body,b->body,&t);
214: if ( !s )
215: *c = 0;
216: else {
217: MKLM(t,z);
218: if ( s < 0 )
219: chsgnlm(z,c);
220: else
221: *c = z;
222: }
223: }
224: }
225:
226: void mullm(a,b,c)
227: LM a,b;
228: LM *c;
229: {
230: N t,q,r;
231: LM z;
232:
233: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
234: if ( !a || !b )
235: *c = 0;
236: else {
237: kmuln(a->body,b->body,&t);
238: gen_simpn(t,&r);
239: MKLM(r,*c);
240: }
241: }
242:
243: void divlm(a,b,c)
244: LM a,b;
245: LM *c;
246: {
247: LM r;
248: Q t,m,i;
249: LM z;
250:
251: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
252: if ( !b )
253: error("divlm: division by 0");
254: else if ( !a )
255: *c = 0;
256: else {
257: NTOQ(b->body,1,t); NTOQ(current_mod_lm->dense,1,m);
258: invl(t,m,&i);
259: MKLM(NM(i),r);
260: mullm(a,r,c);
261: }
262: }
263:
264: void chsgnlm(a,c)
265: LM a,*c;
266: {
267: LM t;
268: N s,u;
269:
270: if ( !a )
271: *c = a;
272: else {
273: qtolm((Q)a,&t); a = t;
274: gen_simpn_force(a->body,&s);
275: subn(current_mod_lm->dense,s,&u);
276: MKLM(u,*c);
277: }
278: }
279:
280: void pwrlm(a,b,c)
281: LM a;
282: Q b;
283: LM *c;
284: {
285: LM t;
286: N s;
287:
288: if ( !b ) {
289: MKLM(ONEN,*c);
290: } else if ( !a )
291: *c = 0;
292: else {
293: qtolm((Q)a,&t); a = t;
294: pwrlm0(a->body,NM(b),&s);
295: MKLM(s,*c);
296: }
297: }
298:
299: void pwrlm0(a,n,c)
300: N a,n;
301: N *c;
302: {
303: N n1,t,t1,t2,r1;
304: int r;
305:
306: if ( !n )
307: *c = ONEN;
308: else if ( UNIN(n) )
309: *c = a;
310: else {
311: r = divin(n,2,&n1);
312: pwrlm0(a,n1,&t);
313: kmuln(t,t,&t1); gen_simpn(t1,&r1);
314: if ( r ) {
315: kmuln(r1,a,&t2); gen_simpn(t2,&r1);
316: }
317: *c = r1;
318: }
319: }
320:
321: int cmplm(a,b)
322: LM a,b;
323: {
324: LM z;
325:
326: qtolm((Q)a,&z); a = z; qtolm((Q)b,&z); b = z;
327: if ( !a )
328: if ( !b )
329: return 0;
330: else
331: return -1;
332: else if ( !b )
333: return 1;
334: else
335: return cmpn(a->body,b->body);
336: }
337:
338: void remn_special(N,N,int,unsigned int ,N *);
339:
340: void gen_simpn(a,b)
341: N a;
342: N *b;
343: {
344: if ( !current_mod_lm )
345: error("gen_simpn: current_mod_lm is not set");
346: if ( lm_lazy )
347: *b = a;
348: else if ( current_mod_lm->id == UP2_SPARSE )
349: remn_special(a,current_mod_lm->dense,current_mod_lm->bit,current_mod_lm->lower,b);
350: else
351: remn(a,current_mod_lm->dense,b);
352: }
353:
354: void gen_simpn_force(a,b)
355: N a;
356: N *b;
357: {
358: if ( !current_mod_lm )
359: error("gen_simpn_force: current_mod_lm is not set");
360: else if ( current_mod_lm->id == UP2_SPARSE )
361: remn_special(a,current_mod_lm->dense,current_mod_lm->bit,current_mod_lm->lower,b);
362: else
363: remn(a,current_mod_lm->dense,b);
364: }
365: