Commit | Line | Data |
---|---|---|
d7ab1bab | 1 | /* -*-c-*- |
2 | * | |
d7ab1bab | 3 | * Multiprecision arithmetic |
4 | * | |
5 | * (c) 2004 Straylight/Edgeware | |
6 | */ | |
7 | ||
b2687a0a | 8 | /*----- Licensing notice --------------------------------------------------* |
d7ab1bab | 9 | * |
10 | * This file is part of the Python interface to Catacomb. | |
11 | * | |
12 | * Catacomb/Python is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
b2687a0a | 16 | * |
d7ab1bab | 17 | * Catacomb/Python is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
b2687a0a | 21 | * |
d7ab1bab | 22 | * You should have received a copy of the GNU General Public License |
23 | * along with Catacomb/Python; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
26 | ||
27 | /*----- Header files ------------------------------------------------------*/ | |
28 | ||
29 | #include "catacomb-python.h" | |
30 | ||
31 | /*----- General utilities -------------------------------------------------*/ | |
32 | ||
33 | PyTypeObject *mp_pytype = 0; | |
34 | PyTypeObject *gf_pytype = 0; | |
35 | ||
f368b46e | 36 | mp *mp_frompylong(PyObject *obj) |
d7ab1bab | 37 | { |
38 | unsigned long bits; | |
f368b46e | 39 | PyLongObject *l = (PyLongObject *)obj; |
d7ab1bab | 40 | int sz; |
41 | size_t w; | |
42 | mpd r = 0; | |
43 | int b = 0; | |
44 | int i; | |
45 | mp *x; | |
46 | mpw *p; | |
47 | ||
48 | sz = l->ob_size; | |
49 | if (sz < 0) sz = -sz; | |
50 | assert(MPW_BITS >= SHIFT); | |
51 | bits = (unsigned long)sz * SHIFT; | |
52 | w = (bits + MPW_BITS - 1)/MPW_BITS; | |
53 | x = mp_new(w, l->ob_size < 0 ? MP_NEG : 0); | |
54 | p = x->v; | |
55 | for (i = 0; i < sz; i++) { | |
56 | r |= (mpd)l->ob_digit[i] << b; | |
57 | b += SHIFT; | |
58 | while (b >= MPW_BITS) { | |
59 | *p++ = MPW(r); | |
60 | r >>= MPW_BITS; | |
61 | b -= MPW_BITS; | |
62 | } | |
63 | } | |
64 | while (r) { | |
65 | *p++ = MPW(r); | |
66 | r >>= MPW_BITS; | |
67 | } | |
68 | x->vl = p; | |
69 | MP_SHRINK(x); | |
70 | return (x); | |
71 | } | |
72 | ||
f368b46e | 73 | PyObject *mp_topylong(mp *x) |
d7ab1bab | 74 | { |
75 | unsigned long bits = mp_bits(x); | |
76 | int sz = (bits + SHIFT - 1)/SHIFT; | |
77 | PyLongObject *l = _PyLong_New(sz); | |
78 | mpd r = 0; | |
79 | int b = 0; | |
80 | mpw *p = x->v; | |
81 | int i = 0; | |
82 | ||
83 | assert(MPW_BITS >= SHIFT); | |
84 | while (i < sz && p < x->vl) { | |
f368b46e | 85 | r |= (mpd)*p++ << b; |
d7ab1bab | 86 | b += MPW_BITS; |
87 | while (i < sz && b >= SHIFT) { | |
88 | l->ob_digit[i++] = r & MASK; | |
89 | r >>= SHIFT; | |
90 | b -= SHIFT; | |
91 | } | |
92 | } | |
93 | while (i < sz && r) { | |
94 | l->ob_digit[i++] = r & MASK; | |
95 | r >>= SHIFT; | |
96 | } | |
97 | l->ob_size = (x->f & MP_NEG) ? -sz : sz; | |
f368b46e | 98 | return ((PyObject *)l); |
d7ab1bab | 99 | } |
100 | ||
101 | mp *mp_frompyobject(PyObject *o, int radix) | |
102 | { | |
103 | mp *x; | |
104 | ||
d7ab1bab | 105 | if (PyString_Check(o)) { |
106 | mptext_stringctx sc; | |
107 | mp *x; | |
108 | sc.buf = PyString_AS_STRING(o); | |
109 | sc.lim = sc.buf + PyString_GET_SIZE(o); | |
110 | x = mp_read(MP_NEW, radix, &mptext_stringops, &sc); | |
111 | if (!x) return (0); | |
112 | if (sc.buf < sc.lim) { MP_DROP(x); return (0); } | |
113 | return (x); | |
114 | } | |
f368b46e MW |
115 | if ((x = tomp(o)) != 0) |
116 | return (x); | |
d7ab1bab | 117 | return (0); |
118 | } | |
119 | ||
120 | PyObject *mp_topystring(mp *x, int radix, const char *xpre, | |
121 | const char *pre, const char *post) | |
122 | { | |
123 | int len = mptext_len(x, radix) + 1; | |
124 | mptext_stringctx sc; | |
125 | PyObject *o; | |
126 | size_t xprelen = xpre ? strlen(xpre) : 0; | |
127 | size_t prelen = pre ? strlen(pre) : 0; | |
128 | size_t postlen = post ? strlen(post) : 0; | |
129 | char *p; | |
130 | MP_COPY(x); | |
131 | o = PyString_FromStringAndSize(0, len + 1 + xprelen + prelen + postlen); | |
132 | p = PyString_AS_STRING(o); | |
133 | sc.buf = p; | |
134 | if (xpre) { memcpy(sc.buf, xpre, xprelen); sc.buf += xprelen; } | |
135 | if (MP_NEGP(x)) { *sc.buf++ = '-'; x = mp_neg(x, x); } | |
136 | if (pre) { memcpy(sc.buf, pre, prelen); sc.buf += prelen; } | |
137 | sc.lim = sc.buf + len; | |
138 | mp_write(x, radix, &mptext_stringops, &sc); | |
139 | if (post) { memcpy(sc.buf, post, postlen); sc.buf += postlen; } | |
140 | MP_DROP(x); | |
141 | _PyString_Resize(&o, sc.buf - p); | |
142 | return (o); | |
143 | } | |
144 | ||
f368b46e MW |
145 | static int good_radix_p(int r, int readp) |
146 | { | |
147 | return ((r >= -255 && r <= -2) || | |
148 | (readp && r == 0) || | |
149 | (r >= 2 && r <= 62)); | |
150 | } | |
151 | ||
d7ab1bab | 152 | PyObject *mp_pywrap(mp *x) |
153 | { | |
154 | mp_pyobj *z = PyObject_New(mp_pyobj, mp_pytype); | |
155 | z->x = x; | |
156 | return ((PyObject *)z); | |
157 | } | |
158 | ||
159 | PyObject *gf_pywrap(mp *x) | |
160 | { | |
161 | mp_pyobj *z = PyObject_New(mp_pyobj, gf_pytype); | |
162 | z->x = x; | |
163 | return ((PyObject *)z); | |
164 | } | |
165 | ||
5779eaf1 | 166 | int mp_tolong_checked(mp *x, long *l, int must) |
d7ab1bab | 167 | { |
168 | static mp *longmin = 0, *longmax = 0; | |
169 | int rc = -1; | |
170 | ||
171 | if (!longmax) { | |
172 | longmin = mp_fromlong(MP_NEW, LONG_MIN); | |
173 | longmax = mp_fromlong(MP_NEW, LONG_MAX); | |
174 | } | |
5779eaf1 MW |
175 | if (MP_CMP(x, <, longmin) || MP_CMP(x, >, longmax)) { |
176 | if (must) VALERR("mp out of range for int"); | |
177 | else goto end; | |
178 | } | |
d7ab1bab | 179 | *l = mp_tolong(x); |
180 | rc = 0; | |
181 | end: | |
182 | return (rc); | |
183 | } | |
184 | ||
185 | /*----- Python interface --------------------------------------------------*/ | |
186 | ||
187 | static void mp_pydealloc(PyObject *o) | |
188 | { | |
189 | MP_DROP(MP_X(o)); | |
3aa33042 | 190 | FREEOBJ(o); |
d7ab1bab | 191 | } |
192 | ||
193 | static PyObject *mp_pyrepr(PyObject *o) | |
194 | { return mp_topystring(MP_X(o), 10, "MP(", 0, "L)"); } | |
195 | ||
196 | static PyObject *mp_pystr(PyObject *o) | |
197 | { return mp_topystring(MP_X(o), 10, 0, 0, 0); } | |
198 | ||
199 | mp *tomp(PyObject *o) | |
200 | { | |
201 | PyObject *l; | |
202 | mp *x; | |
203 | ||
204 | if (!o) | |
205 | return (0); | |
206 | else if (MP_PYCHECK(o) || GF_PYCHECK(o)) | |
207 | return (MP_COPY(MP_X(o))); | |
208 | else if (FE_PYCHECK(o)) | |
209 | return (F_OUT(FE_F(o), MP_NEW, FE_X(o))); | |
210 | else if (PFILT_PYCHECK(o)) | |
211 | return (MP_COPY(PFILT_F(o)->m)); | |
212 | else if (ECPT_PYCHECK(o)) { | |
213 | ec p = EC_INIT; | |
214 | getecptout(&p, o); | |
215 | x = MP_COPY(p.x); | |
216 | EC_DESTROY(&p); | |
217 | return (x); | |
218 | } else if (GE_PYCHECK(o)) { | |
219 | if ((x = G_TOINT(GE_G(o), MP_NEW, GE_X(o))) == 0) | |
220 | return (0); | |
221 | return (x); | |
222 | } else if (PyInt_Check(o)) | |
223 | return (mp_fromlong(MP_NEW, PyInt_AS_LONG(o))); | |
224 | else if ((l = PyNumber_Long(o)) != 0) { | |
f368b46e | 225 | x = mp_frompylong(l); |
d7ab1bab | 226 | Py_DECREF(l); |
227 | return (x); | |
228 | } else { | |
229 | PyErr_Clear(); | |
230 | return (0); | |
231 | } | |
232 | } | |
233 | ||
234 | mp *getmp(PyObject *o) | |
235 | { | |
236 | mp *x = 0; | |
237 | if (!o) return (0); | |
238 | if ((x = tomp(o)) == 0) { | |
239 | PyErr_Format(PyExc_TypeError, "can't convert %.100s to mp", | |
240 | o->ob_type->tp_name); | |
241 | } | |
242 | return (x); | |
243 | } | |
244 | ||
245 | int convmp(PyObject *o, void *p) | |
246 | { | |
247 | mp *x; | |
248 | if ((x = getmp(o)) == 0) return (0); | |
249 | *(mp **)p = x; | |
250 | return (1); | |
251 | } | |
252 | ||
253 | mp *getgf(PyObject *o) | |
254 | { | |
255 | mp *x = 0; | |
256 | if (!o) return (0); | |
257 | if ((x = tomp(o)) == 0) { | |
258 | PyErr_Format(PyExc_TypeError, "can't convert %.100s to gf", | |
259 | o->ob_type->tp_name); | |
260 | } | |
261 | return (x); | |
262 | } | |
263 | ||
264 | int convgf(PyObject *o, void *p) | |
265 | { | |
266 | mp *x; | |
267 | if ((x = getgf(o)) == 0) return (0); | |
268 | *(mp **)p = x; | |
269 | return (1); | |
270 | } | |
271 | ||
bf8910bd MW |
272 | static mp *implicitmp(PyObject *o) |
273 | { | |
274 | if (!o || | |
275 | GF_PYCHECK(o) || | |
276 | ECPT_PYCHECK(o) || | |
277 | FE_PYCHECK(o) || | |
278 | GE_PYCHECK(o)) | |
279 | return (0); | |
280 | return (tomp(o)); | |
281 | } | |
282 | ||
283 | static mp *implicitgf(PyObject *o) | |
284 | { | |
285 | if (!o || | |
286 | MP_PYCHECK(o) || | |
287 | ECPT_PYCHECK(o) || | |
288 | FE_PYCHECK(o) || | |
289 | GE_PYCHECK(o)) | |
290 | return (0); | |
291 | return (tomp(o)); | |
292 | } | |
293 | ||
d7ab1bab | 294 | static int mpbinop(PyObject *x, PyObject *y, mp **xx, mp **yy) |
295 | { | |
bf8910bd MW |
296 | if ((*xx = implicitmp(x)) == 0) |
297 | return (-1); | |
298 | if ((*yy = implicitmp(y)) == 0) { | |
299 | MP_DROP(*xx); | |
300 | return (-1); | |
301 | } | |
302 | return (0); | |
303 | } | |
304 | ||
305 | static int gfbinop(PyObject *x, PyObject *y, mp **xx, mp **yy) | |
306 | { | |
307 | if ((*xx = implicitgf(x)) == 0) | |
d7ab1bab | 308 | return (-1); |
bf8910bd | 309 | if ((*yy = implicitgf(y)) == 0) { |
d7ab1bab | 310 | MP_DROP(*xx); |
311 | return (-1); | |
312 | } | |
313 | return (0); | |
314 | } | |
315 | ||
316 | #define gf_and mp_and | |
317 | #define gf_or mp_or | |
318 | #define gf_xor mp_xor | |
319 | #define BINOP(pre, name) \ | |
320 | static PyObject *pre##_py##name(PyObject *x, PyObject *y) { \ | |
321 | mp *xx, *yy, *zz; \ | |
bf8910bd | 322 | if (pre##binop(x, y, &xx, &yy)) RETURN_NOTIMPL; \ |
d7ab1bab | 323 | zz = pre##_##name(MP_NEW, xx, yy); \ |
324 | MP_DROP(xx); MP_DROP(yy); \ | |
325 | return (pre##_pywrap(zz)); \ | |
326 | } | |
327 | BINOP(mp, add) | |
328 | BINOP(mp, sub) | |
329 | BINOP(mp, mul) | |
330 | BINOP(mp, and2c) | |
331 | BINOP(mp, or2c) | |
332 | BINOP(mp, xor2c) | |
333 | BINOP(gf, add) | |
334 | BINOP(gf, sub) | |
335 | BINOP(gf, mul) | |
336 | BINOP(gf, and) | |
337 | BINOP(gf, or) | |
338 | BINOP(gf, xor) | |
339 | #undef BINOP | |
340 | ||
341 | static mp *mp_abs(mp *d, mp *x) | |
342 | { | |
343 | if (MP_NEGP(x)) | |
344 | return (mp_neg(d, x)); | |
345 | MP_COPY(x); | |
346 | if (d) MP_DROP(d); | |
347 | return (x); | |
348 | } | |
349 | ||
350 | #define UNOP(pre, name) \ | |
351 | static PyObject *pre##_py##name(PyObject *x) \ | |
352 | { return mp_pywrap(pre##_##name(MP_NEW, MP_X(x))); } | |
353 | UNOP(mp, neg) | |
354 | UNOP(mp, abs) | |
355 | UNOP(mp, not2c) | |
356 | #undef UNOP | |
357 | ||
358 | static PyObject *mp_pyid(PyObject *x) { RETURN_OBJ(x); } | |
359 | ||
360 | #define gf_lsr mp_lsr | |
361 | #define SHIFTOP(pre, name, rname) \ | |
362 | static PyObject *pre##_py##name(PyObject *x, PyObject *y) { \ | |
363 | mp *xx, *yy; \ | |
364 | PyObject *z = 0; \ | |
365 | long n; \ | |
bf8910bd | 366 | if (pre##binop(x, y, &xx, &yy)) RETURN_NOTIMPL; \ |
5779eaf1 | 367 | if (mp_tolong_checked(yy, &n, 1)) goto end; \ |
d7ab1bab | 368 | if (n < 0) \ |
369 | z = pre##_pywrap(mp_##rname(MP_NEW, xx, -n)); \ | |
370 | else \ | |
371 | z = pre##_pywrap(mp_##name(MP_NEW, xx, n)); \ | |
372 | end: \ | |
373 | MP_DROP(xx); MP_DROP(yy); \ | |
374 | return (z); \ | |
375 | } | |
376 | SHIFTOP(mp, lsl2c, lsr2c) | |
377 | SHIFTOP(mp, lsr2c, lsl2c) | |
378 | SHIFTOP(gf, lsl, lsr) | |
379 | SHIFTOP(gf, lsr, lsl) | |
380 | #undef SHIFTOP | |
381 | ||
382 | #define DIVOP(pre, name, qq, rr, gather) \ | |
383 | static PyObject *pre##_py##name(PyObject *x, PyObject *y) { \ | |
384 | mp *xx, *yy; \ | |
385 | PyObject *z = 0; \ | |
386 | INIT_##qq(q) INIT_##rr(r) \ | |
bf8910bd | 387 | if (pre##binop(x, y, &xx, &yy)) RETURN_NOTIMPL; \ |
d7ab1bab | 388 | if (MP_ZEROP(yy)) \ |
389 | ZDIVERR("division by zero"); \ | |
390 | pre##_div(ARG_##qq(q), ARG_##rr(r), xx, yy); \ | |
391 | z = gather; \ | |
392 | end: \ | |
393 | MP_DROP(xx); MP_DROP(yy); \ | |
394 | return (z); \ | |
395 | } | |
396 | #define INIT_YES(p) mp *p = MP_NEW; | |
397 | #define INIT_NO(p) | |
398 | #define ARG_YES(p) &p | |
399 | #define ARG_NO(p) 0 | |
400 | DIVOP(mp, divmod, YES, YES, | |
401 | Py_BuildValue("(NN)", mp_pywrap(q), mp_pywrap(r))) | |
402 | DIVOP(mp, div, YES, NO, mp_pywrap(q)) | |
403 | DIVOP(mp, mod, NO, YES, mp_pywrap(r)) | |
404 | DIVOP(gf, divmod, YES, YES, | |
405 | Py_BuildValue("(NN)", gf_pywrap(q), gf_pywrap(r))) | |
406 | DIVOP(gf, div, YES, NO, gf_pywrap(q)) | |
407 | DIVOP(gf, mod, NO, YES, gf_pywrap(r)) | |
408 | #undef INIT_YES | |
409 | #undef INIT_NO | |
410 | #undef ARG_YES | |
411 | #undef ARG_NO | |
412 | #undef DIVOP | |
413 | ||
414 | static mp *mp_modinv_checked(mp *d, mp *x, mp *p) | |
415 | { | |
416 | mp *g = MP_NEW; | |
417 | mp_gcd(&g, 0, &d, p, x); | |
418 | if (!MP_EQ(g, MP_ONE)) { | |
419 | MP_DROP(g); MP_DROP(d); | |
420 | PyErr_SetString(PyExc_ZeroDivisionError, "no modular inverse"); | |
421 | return (0); | |
422 | } | |
423 | MP_DROP(g); return (d); | |
424 | } | |
425 | ||
426 | static PyObject *mp_pyexp(PyObject *x, PyObject *y, PyObject *z) | |
427 | { | |
428 | mp *xx = 0, *yy = 0, *zz = 0; | |
429 | mp *r = 0; | |
430 | PyObject *rc = 0; | |
431 | ||
bf8910bd | 432 | if ((xx = implicitmp(x)) == 0 || (yy = implicitmp(y)) == 0 || |
d7ab1bab | 433 | (z && z != Py_None && (zz = tomp(z)) == 0)) { |
434 | mp_drop(xx); mp_drop(yy); mp_drop(zz); | |
435 | RETURN_NOTIMPL; | |
436 | } | |
437 | if (!z || z == Py_None) { | |
438 | if (MP_NEGP(yy)) VALERR("negative exponent"); | |
439 | r = mp_exp(MP_NEW, xx, yy); | |
440 | } else { | |
441 | if (!MP_POSP(zz)) VALERR("modulus must be positive"); | |
442 | if (MP_NEGP(yy)) { | |
443 | if ((xx = mp_modinv_checked(xx, xx, zz)) == 0) goto end; | |
444 | yy = mp_neg(yy, yy); | |
445 | } | |
446 | if (MP_ODDP(zz)) { | |
447 | mpmont mm; | |
448 | mpmont_create(&mm, zz); | |
449 | r = mpmont_exp(&mm, MP_NEW, xx, yy); | |
450 | mpmont_destroy(&mm); | |
451 | } else { | |
452 | mpbarrett mb; | |
453 | mpbarrett_create(&mb, zz); | |
454 | r = mpbarrett_exp(&mb, MP_NEW, xx, yy); | |
455 | mpbarrett_destroy(&mb); | |
456 | } | |
457 | } | |
458 | rc = mp_pywrap(r); | |
459 | end: | |
460 | mp_drop(xx); mp_drop(yy); mp_drop(zz); | |
461 | return (rc); | |
462 | } | |
463 | ||
464 | static mp *gf_modinv_checked(mp *d, mp *x, mp *p) | |
465 | { | |
466 | mp *g = MP_NEW; | |
467 | gf_gcd(&g, 0, &d, p, x); | |
468 | if (!MP_EQ(g, MP_ONE)) { | |
469 | MP_DROP(g); MP_DROP(d); | |
470 | PyErr_SetString(PyExc_ZeroDivisionError, "no modular inverse"); | |
471 | return (0); | |
472 | } | |
473 | MP_DROP(g); return (d); | |
474 | } | |
475 | ||
476 | #define BASEOP(name, radix, pre) \ | |
477 | static PyObject *mp_py##name(PyObject *x) \ | |
478 | { return mp_topystring(MP_X(x), radix, 0, pre, 0); } | |
479 | BASEOP(oct, 8, "0"); | |
480 | BASEOP(hex, 16, "0x"); | |
481 | #undef BASEOP | |
482 | ||
483 | static int mp_pynonzerop(PyObject *x) { return !MP_ZEROP(MP_X(x)); } | |
484 | ||
485 | static PyObject *mp_pyint(PyObject *x) | |
486 | { | |
487 | long l; | |
5779eaf1 MW |
488 | if (!mp_tolong_checked(MP_X(x), &l, 0)) return (PyInt_FromLong(l)); |
489 | else return mp_topylong(MP_X(x)); | |
d7ab1bab | 490 | } |
491 | static PyObject *mp_pylong(PyObject *x) | |
f368b46e | 492 | { return (mp_topylong(MP_X(x))); } |
d7ab1bab | 493 | static PyObject *mp_pyfloat(PyObject *x) |
494 | { | |
f368b46e | 495 | PyObject *l = mp_topylong(MP_X(x)); |
d7ab1bab | 496 | double f = PyLong_AsDouble(l); |
497 | Py_DECREF(l); | |
498 | return (PyFloat_FromDouble(f)); | |
499 | } | |
500 | ||
b2687a0a | 501 | #define COERCE(pre, PRE) \ |
d7ab1bab | 502 | static int pre##_pycoerce(PyObject **x, PyObject **y) \ |
503 | { \ | |
504 | mp *z; \ | |
505 | \ | |
506 | if (PRE##_PYCHECK(*y)) { \ | |
507 | Py_INCREF(*x); Py_INCREF(*y); \ | |
508 | return (0); \ | |
509 | } \ | |
510 | if ((z = tomp(*y)) != 0) { \ | |
511 | Py_INCREF(*x); \ | |
512 | *y = pre##_pywrap(z); \ | |
513 | return (0); \ | |
514 | } \ | |
515 | return (1); \ | |
516 | } | |
517 | COERCE(mp, MP) | |
518 | COERCE(gf, GF) | |
519 | #undef COERCE | |
520 | ||
521 | static int mp_pycompare(PyObject *x, PyObject *y) | |
522 | { return mp_cmp(MP_X(x), MP_X(y)); } | |
523 | ||
524 | static PyObject *mp_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
525 | { | |
526 | PyObject *x; | |
527 | mp *z; | |
528 | mp_pyobj *zz = 0; | |
529 | int radix = 0; | |
530 | char *kwlist[] = { "x", "radix", 0 }; | |
531 | ||
f368b46e | 532 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O|i:new", kwlist, &x, &radix)) |
d7ab1bab | 533 | goto end; |
534 | if (MP_PYCHECK(x)) RETURN_OBJ(x); | |
f368b46e | 535 | if (!good_radix_p(radix, 1)) VALERR("bad radix"); |
d7ab1bab | 536 | if ((z = mp_frompyobject(x, radix)) == 0) { |
537 | PyErr_Format(PyExc_TypeError, "can't convert %.100s to mp", | |
538 | x->ob_type->tp_name); | |
539 | goto end; | |
540 | } | |
541 | zz = (mp_pyobj *)ty->tp_alloc(ty, 0); | |
542 | zz->x = z; | |
543 | end: | |
544 | return ((PyObject *)zz); | |
545 | } | |
546 | ||
547 | static long mp_pyhash(PyObject *me) | |
548 | { | |
f368b46e MW |
549 | long h; |
550 | PyObject *l = mp_topylong(MP_X(me)); h = PyObject_Hash(l); | |
551 | Py_DECREF(l); return (h); | |
d7ab1bab | 552 | } |
553 | ||
554 | static PyObject *mpmeth_jacobi(PyObject *me, PyObject *arg) | |
555 | { | |
556 | mp *y = 0; | |
557 | PyObject *z = 0; | |
558 | ||
559 | if (!PyArg_ParseTuple(arg, "O&:jacobi", convmp, &y)) goto end; | |
560 | z = PyInt_FromLong(mp_jacobi(y, MP_X(me))); | |
561 | end: | |
562 | if (y) MP_DROP(y); | |
563 | return (z); | |
564 | } | |
565 | ||
566 | #define BITOP(pre, name, c) \ | |
567 | static PyObject *pre##meth_##name(PyObject *me, PyObject *arg) \ | |
568 | { \ | |
a1be89ad MW |
569 | unsigned long i; \ |
570 | if (!PyArg_ParseTuple(arg, "O&:" #name, convulong, &i)) return (0); \ | |
d7ab1bab | 571 | return (pre##_pywrap(mp_##name##c(MP_NEW, MP_X(me), i))); \ |
572 | } | |
573 | BITOP(mp, setbit, 2c); | |
574 | BITOP(mp, clearbit, 2c); | |
b2687a0a | 575 | BITOP(gf, setbit, ); |
d7ab1bab | 576 | BITOP(gf, clearbit, ); |
577 | #undef BITOP | |
578 | ||
579 | static PyObject *mpmeth_testbit(PyObject *me, PyObject *arg) | |
580 | { | |
a1be89ad MW |
581 | unsigned long i; |
582 | if (!PyArg_ParseTuple(arg, "O&:testbit", convulong, &i)) return (0); | |
d7ab1bab | 583 | return (getbool(mp_testbit2c(MP_X(me), i))); |
584 | } | |
585 | ||
586 | static PyObject *gfmeth_testbit(PyObject *me, PyObject *arg) | |
587 | { | |
a1be89ad MW |
588 | unsigned long i; |
589 | if (!PyArg_ParseTuple(arg, "O&:testbit", convulong, &i)) return (0); | |
d7ab1bab | 590 | return (getbool(mp_testbit(MP_X(me), i))); |
591 | } | |
592 | ||
593 | static PyObject *mpmeth_odd(PyObject *me, PyObject *arg) | |
594 | { | |
595 | mp *t; | |
596 | size_t s; | |
597 | ||
598 | if (!PyArg_ParseTuple(arg, ":odd")) return (0); | |
599 | t = mp_odd(MP_NEW, MP_X(me), &s); | |
600 | return (Py_BuildValue("(lN)", (long)s, mp_pywrap(t))); | |
601 | } | |
602 | ||
603 | static PyObject *mpmeth_sqr(PyObject *me, PyObject *arg) | |
604 | { | |
605 | if (!PyArg_ParseTuple(arg, ":sqr")) return (0); | |
606 | return (mp_pywrap(mp_sqr(MP_NEW, MP_X(me)))); | |
607 | } | |
608 | ||
609 | static PyObject *mpmeth_sqrt(PyObject *me, PyObject *arg) | |
610 | { | |
611 | if (!PyArg_ParseTuple(arg, ":sqrt")) return (0); | |
612 | if (MP_NEGP(MP_X(me))) VALERR("negative root"); | |
613 | return (mp_pywrap(mp_sqrt(MP_NEW, MP_X(me)))); | |
614 | end: | |
615 | return (0); | |
616 | } | |
617 | ||
618 | static PyObject *mpmeth_gcd(PyObject *me, PyObject *arg) | |
619 | { | |
620 | mp *y = 0, *zz = MP_NEW; | |
621 | PyObject *z = 0; | |
622 | ||
623 | if (!PyArg_ParseTuple(arg, "O&:gcd", convmp, &y)) goto end; | |
624 | mp_gcd(&zz, 0, 0, MP_X(me), y); | |
625 | z = mp_pywrap(zz); | |
626 | end: | |
627 | if (y) MP_DROP(y); | |
628 | return (z); | |
629 | } | |
630 | ||
631 | static PyObject *mpmeth_gcdx(PyObject *me, PyObject *arg) | |
632 | { | |
633 | PyObject *z = 0; | |
634 | mp *yy = 0, *zz = MP_NEW, *uu = MP_NEW, *vv = MP_NEW; | |
635 | ||
636 | if (!PyArg_ParseTuple(arg, "O&:gcdx", convmp, &yy)) goto end; | |
637 | mp_gcd(&zz, &uu, &vv, MP_X(me), yy); | |
638 | z = Py_BuildValue("(NNN)", | |
639 | mp_pywrap(zz), mp_pywrap(uu), mp_pywrap(vv)); | |
640 | end: | |
641 | if (yy) MP_DROP(yy); | |
642 | return (z); | |
643 | } | |
644 | ||
645 | static PyObject *mpmeth_modinv(PyObject *me, PyObject *arg) | |
646 | { | |
647 | PyObject *z = 0; | |
648 | mp *yy = 0, *zz = MP_NEW; | |
649 | ||
650 | if (!PyArg_ParseTuple(arg, "O&:modinv", convmp, &yy) || | |
651 | (zz = mp_modinv_checked(MP_NEW, yy, MP_X(me))) == 0) | |
652 | goto end; | |
653 | z = mp_pywrap(zz); | |
654 | end: | |
655 | if (yy) MP_DROP(yy); | |
656 | return (z); | |
657 | } | |
658 | ||
659 | static PyObject *mpmeth_tostring(PyObject *me, PyObject *arg, PyObject *kw) | |
660 | { | |
661 | int radix = 10; | |
662 | char *kwlist[] = { "radix", 0 }; | |
663 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "|i:tostring", kwlist, &radix)) | |
664 | goto end; | |
f368b46e | 665 | if (!good_radix_p(radix, 0)) VALERR("bad radix"); |
d7ab1bab | 666 | return (mp_topystring(MP_X(me), radix, 0, 0, 0)); |
667 | end: | |
668 | return (0); | |
669 | } | |
670 | ||
671 | static PyObject *mpmeth_modsqrt(PyObject *me, PyObject *arg) | |
672 | { | |
673 | PyObject *z = 0; | |
674 | mp *yy = 0, *zz = MP_NEW; | |
675 | ||
676 | if (!PyArg_ParseTuple(arg, "O&:modsqrt", convmp, &yy)) goto end; | |
677 | if ((zz = mp_modsqrt(MP_NEW, yy, MP_X(me))) == 0) | |
678 | VALERR("no modular square root"); | |
679 | z = mp_pywrap(zz); | |
680 | end: | |
681 | if (yy) MP_DROP(yy); | |
682 | return (z); | |
683 | } | |
684 | ||
685 | #define STOREOP(name, c) \ | |
686 | static PyObject *mpmeth_##name(PyObject *me, \ | |
687 | PyObject *arg, PyObject *kw) \ | |
688 | { \ | |
689 | long len = -1; \ | |
690 | char *kwlist[] = { "len", 0 }; \ | |
691 | PyObject *rc = 0; \ | |
692 | \ | |
693 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "|l:" #name, \ | |
694 | kwlist, &len)) \ | |
695 | goto end; \ | |
696 | if (len < 0) { \ | |
697 | len = mp_octets##c(MP_X(me)); \ | |
698 | if (!len) len = 1; \ | |
699 | } \ | |
700 | rc = bytestring_pywrap(0, len); \ | |
701 | mp_##name(MP_X(me), PyString_AS_STRING(rc), len); \ | |
702 | end: \ | |
703 | return (rc); \ | |
704 | } | |
705 | STOREOP(storel, ) | |
706 | STOREOP(storeb, ) | |
707 | STOREOP(storel2c, 2c) | |
708 | STOREOP(storeb2c, 2c) | |
709 | #undef STOREOP | |
710 | ||
711 | #define BUFOP(ty, pyty) \ | |
712 | static PyObject *meth__##pyty##_frombuf(PyObject *me, PyObject *arg) \ | |
713 | { \ | |
714 | buf b; \ | |
715 | char *p; \ | |
716 | int sz; \ | |
717 | PyObject *rc = 0; \ | |
718 | mp *x; \ | |
719 | \ | |
720 | if (!PyArg_ParseTuple(arg, "Os#:frombuf", &me, &p, &sz)) goto end; \ | |
721 | buf_init(&b, p, sz); \ | |
722 | if ((x = buf_getmp(&b)) == 0) VALERR("malformed data"); \ | |
723 | rc = Py_BuildValue("(NN)", ty##_pywrap(x), \ | |
724 | bytestring_pywrapbuf(&b)); \ | |
725 | end: \ | |
726 | return (rc); \ | |
727 | } | |
728 | BUFOP(mp, MP) | |
729 | BUFOP(gf, GF) | |
730 | #undef BUFOP | |
731 | ||
732 | static PyObject *mpmeth_tobuf(PyObject *me, PyObject *arg) | |
733 | { | |
734 | buf b; | |
735 | PyObject *rc; | |
736 | mp *x; | |
737 | size_t n; | |
738 | ||
739 | if (!PyArg_ParseTuple(arg, ":tobuf")) return (0); | |
740 | x = MP_X(me); | |
741 | n = mp_octets(x) + 3; | |
742 | rc = bytestring_pywrap(0, n); | |
743 | buf_init(&b, PyString_AS_STRING(rc), n); | |
744 | buf_putmp(&b, x); | |
745 | assert(BOK(&b)); | |
746 | _PyString_Resize(&rc, BLEN(&b)); | |
747 | return (rc); | |
748 | } | |
749 | ||
750 | static PyObject *mpmeth_primep(PyObject *me, PyObject *arg, PyObject *kw) | |
751 | { | |
752 | grand *r = &rand_global; | |
753 | char *kwlist[] = { "rng", 0 }; | |
754 | PyObject *rc = 0; | |
755 | ||
756 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&", kwlist, convgrand, &r)) | |
757 | goto end; | |
758 | rc = getbool(pgen_primep(MP_X(me), r)); | |
759 | end: | |
760 | return (rc); | |
761 | } | |
762 | ||
763 | static PyObject *mpget_nbits(PyObject *me, void *hunoz) | |
764 | { return (PyInt_FromLong(mp_bits(MP_X(me)))); } | |
765 | ||
766 | static PyObject *mpget_noctets(PyObject *me, void *hunoz) | |
767 | { return (PyInt_FromLong(mp_octets(MP_X(me)))); } | |
768 | ||
769 | static PyObject *mpget_noctets2c(PyObject *me, void *hunoz) | |
770 | { return (PyInt_FromLong(mp_octets2c(MP_X(me)))); } | |
771 | ||
772 | static PyGetSetDef mp_pygetset[] = { | |
773 | #define GETSETNAME(op, func) mp##op##_##func | |
774 | GET (nbits, "X.nbits -> bit length of X") | |
775 | GET (noctets, "X.noctets -> octet length of X") | |
776 | GET (noctets2c, "X.noctets2c -> two's complement octet length of X") | |
777 | #undef GETSETNAME | |
778 | { 0 } | |
779 | }; | |
780 | ||
781 | static PyMethodDef mp_pymethods[] = { | |
782 | #define METHNAME(func) mpmeth_##func | |
783 | METH (jacobi, "X.jacobi(Y) -> Jacobi symbol (Y/X) (NB inversion!)") | |
784 | METH (setbit, "X.setbit(N) -> X with bit N set") | |
785 | METH (clearbit, "X.clearbit(N) -> X with bit N clear") | |
786 | METH (testbit, "X.testbit(N) -> true/false if bit N set/clear in X") | |
787 | METH (odd, "X.odd() -> S, T where X = 2^S T with T odd") | |
788 | METH (sqr, "X.sqr() -> X^2") | |
789 | METH (sqrt, "X.sqrt() -> largest integer <= sqrt(X)") | |
790 | METH (gcd, "X.gcd(Y) -> gcd(X, Y)") | |
791 | METH (gcdx, | |
792 | "X.gcdx(Y) -> (gcd(X, Y), U, V) with X U + Y V = gcd(X, Y)") | |
793 | METH (modinv, "X.modinv(Y) -> multiplicative inverse of Y mod X") | |
794 | METH (modsqrt, "X.modsqrt(Y) -> square root of Y mod X, if X prime") | |
795 | KWMETH(primep, "X.primep(rng = rand) -> true/false if X is prime") | |
796 | KWMETH(tostring, "X.tostring(radix = 10) -> STR") | |
797 | KWMETH(storel, "X.storel(len = -1) -> little-endian bytes") | |
798 | KWMETH(storeb, "X.storeb(len = -1) -> big-endian bytes") | |
799 | KWMETH(storel2c, | |
800 | "X.storel2c(len = -1) -> little-endian bytes, two's complement") | |
801 | KWMETH(storeb2c, | |
802 | "X.storeb2c(len = -1) -> big-endian bytes, two's complement") | |
803 | METH (tobuf, "X.tobuf() -> buffer format") | |
804 | #undef METHNAME | |
805 | { 0 } | |
806 | }; | |
807 | ||
808 | static PyNumberMethods mp_pynumber = { | |
809 | mp_pyadd, /* @nb_add@ */ | |
810 | mp_pysub, /* @nb_subtract@ */ | |
811 | mp_pymul, /* @nb_multiply@ */ | |
812 | 0, /* @nb_divide@ */ | |
813 | mp_pymod, /* @nb_remainder@ */ | |
814 | mp_pydivmod, /* @nb_divmod@ */ | |
815 | mp_pyexp, /* @nb_power@ */ | |
816 | mp_pyneg, /* @nb_negative@ */ | |
817 | mp_pyid, /* @nb_positive@ */ | |
818 | mp_pyabs, /* @nb_absolute@ */ | |
819 | mp_pynonzerop, /* @nb_nonzero@ */ | |
820 | mp_pynot2c, /* @nb_invert@ */ | |
821 | mp_pylsl2c, /* @nb_lshift@ */ | |
822 | mp_pylsr2c, /* @nb_rshift@ */ | |
823 | mp_pyand2c, /* @nb_and@ */ | |
824 | mp_pyxor2c, /* @nb_xor@ */ | |
825 | mp_pyor2c, /* @nb_or@ */ | |
826 | mp_pycoerce, /* @nb_coerce@ */ | |
827 | mp_pyint, /* @nb_int@ */ | |
828 | mp_pylong, /* @nb_long@ */ | |
829 | mp_pyfloat, /* @nb_float@ */ | |
830 | mp_pyoct, /* @nb_oct@ */ | |
831 | mp_pyhex, /* @nb_hex@ */ | |
832 | ||
833 | 0, /* @nb_inplace_add@ */ | |
834 | 0, /* @nb_inplace_subtract@ */ | |
835 | 0, /* @nb_inplace_multiply@ */ | |
836 | 0, /* @nb_inplace_divide@ */ | |
837 | 0, /* @nb_inplace_remainder@ */ | |
838 | 0, /* @nb_inplace_power@ */ | |
839 | 0, /* @nb_inplace_lshift@ */ | |
840 | 0, /* @nb_inplace_rshift@ */ | |
841 | 0, /* @nb_inplace_and@ */ | |
842 | 0, /* @nb_inplace_xor@ */ | |
843 | 0, /* @nb_inplace_or@ */ | |
844 | ||
845 | mp_pydiv, /* @nb_floor_divide@ */ | |
846 | 0, /* @nb_true_divide@ */ | |
847 | 0, /* @nb_inplace_floor_divide@ */ | |
848 | 0, /* @nb_inplace_true_divide@ */ | |
849 | }; | |
850 | ||
851 | static PyTypeObject mp_pytype_skel = { | |
6d4db0bf | 852 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 853 | "MP", /* @tp_name@ */ |
d7ab1bab | 854 | sizeof(mp_pyobj), /* @tp_basicsize@ */ |
855 | 0, /* @tp_itemsize@ */ | |
856 | ||
857 | mp_pydealloc, /* @tp_dealloc@ */ | |
858 | 0, /* @tp_print@ */ | |
859 | 0, /* @tp_getattr@ */ | |
860 | 0, /* @tp_setattr@ */ | |
861 | mp_pycompare, /* @tp_compare@ */ | |
862 | mp_pyrepr, /* @tp_repr@ */ | |
863 | &mp_pynumber, /* @tp_as_number@ */ | |
864 | 0, /* @tp_as_sequence@ */ | |
865 | 0, /* @tp_as_mapping@ */ | |
866 | mp_pyhash, /* @tp_hash@ */ | |
867 | 0, /* @tp_call@ */ | |
868 | mp_pystr, /* @tp_str@ */ | |
869 | 0, /* @tp_getattro@ */ | |
870 | 0, /* @tp_setattro@ */ | |
871 | 0, /* @tp_as_buffer@ */ | |
872 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
873 | Py_TPFLAGS_CHECKTYPES | | |
874 | Py_TPFLAGS_BASETYPE, | |
875 | ||
876 | /* @tp_doc@ */ | |
877 | "Multiprecision integers, similar to `long' but more efficient and\n\ | |
878 | versatile. Support all the standard arithmetic operations.\n\ | |
879 | \n\ | |
880 | Constructor mp(X, radix = R) attempts to convert X to an `mp'. If\n\ | |
881 | X is a string, it's read in radix-R form, or we look for a prefix\n\ | |
882 | if R = 0. Other acceptable things are ints and longs.\n\ | |
883 | \n\ | |
884 | Notes:\n\ | |
885 | \n\ | |
886 | * Use `//' for division. MPs don't have `/' division.", | |
887 | ||
888 | 0, /* @tp_traverse@ */ | |
889 | 0, /* @tp_clear@ */ | |
890 | 0, /* @tp_richcompare@ */ | |
891 | 0, /* @tp_weaklistoffset@ */ | |
892 | 0, /* @tp_iter@ */ | |
963a6148 | 893 | 0, /* @tp_iternext@ */ |
d7ab1bab | 894 | mp_pymethods, /* @tp_methods@ */ |
895 | 0, /* @tp_members@ */ | |
896 | mp_pygetset, /* @tp_getset@ */ | |
897 | 0, /* @tp_base@ */ | |
898 | 0, /* @tp_dict@ */ | |
899 | 0, /* @tp_descr_get@ */ | |
900 | 0, /* @tp_descr_set@ */ | |
901 | 0, /* @tp_dictoffset@ */ | |
902 | 0, /* @tp_init@ */ | |
903 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
904 | mp_pynew, /* @tp_new@ */ | |
3aa33042 | 905 | 0, /* @tp_free@ */ |
d7ab1bab | 906 | 0 /* @tp_is_gc@ */ |
907 | }; | |
908 | ||
909 | static PyObject *meth__MP_fromstring(PyObject *me, | |
bf8910bd | 910 | PyObject *arg, PyObject *kw) |
d7ab1bab | 911 | { |
912 | int r = 0; | |
913 | char *p; | |
914 | int len; | |
915 | PyObject *z = 0; | |
916 | mp *zz; | |
917 | mptext_stringctx sc; | |
918 | char *kwlist[] = { "class", "x", "radix", 0 }; | |
919 | ||
920 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "Os#|i:fromstring", | |
921 | kwlist, &me, &p, &len, &r)) | |
922 | goto end; | |
f368b46e | 923 | if (!good_radix_p(r, 1)) VALERR("bad radix"); |
d7ab1bab | 924 | sc.buf = p; sc.lim = p + len; |
925 | if ((zz = mp_read(MP_NEW, r, &mptext_stringops, &sc)) == 0) | |
80f7cd89 | 926 | VALERR("bad integer"); |
d7ab1bab | 927 | z = Py_BuildValue("(Ns#)", mp_pywrap(zz), sc.buf, (int)(sc.lim - sc.buf)); |
928 | end: | |
929 | return (z); | |
930 | } | |
931 | ||
9f49c854 MW |
932 | static PyObject *meth__MP_factorial(PyObject *me, PyObject *arg) |
933 | { | |
934 | unsigned long i; | |
935 | mp *x; | |
936 | if (!PyArg_ParseTuple(arg, "OO&:factorial", &me, convulong, &i)) | |
937 | return (0); | |
938 | x = mp_factorial(i); | |
939 | return mp_pywrap(x); | |
940 | } | |
941 | ||
6313f40e MW |
942 | static PyObject *meth__MP_fibonacci(PyObject *me, PyObject *arg) |
943 | { | |
944 | long i; | |
945 | mp *x; | |
946 | if (!PyArg_ParseTuple(arg, "Ol:fibonacci", &me, &i)) return (0); | |
947 | x = mp_fibonacci(i); | |
948 | return mp_pywrap(x); | |
949 | } | |
950 | ||
32507e35 MW |
951 | #define LOADOP(pre, py, name) \ |
952 | static PyObject *meth__##py##_##name(PyObject *me, PyObject *arg) \ | |
953 | { \ | |
954 | char *p; \ | |
955 | int len; \ | |
956 | if (!PyArg_ParseTuple(arg, "Os#:" #name, &me, &p, &len)) return (0); \ | |
957 | return (pre##_pywrap(mp_##name(MP_NEW, p, len))); \ | |
958 | } | |
959 | LOADOP(mp, MP, loadl) | |
960 | LOADOP(mp, MP, loadb) | |
961 | LOADOP(mp, MP, loadl2c) | |
962 | LOADOP(mp, MP, loadb2c) | |
963 | LOADOP(gf, GF, loadl) | |
964 | LOADOP(gf, GF, loadb) | |
965 | #undef LOADOP | |
966 | ||
967 | /*----- Products of small integers ----------------------------------------*/ | |
968 | ||
969 | typedef struct mpmul_pyobj { | |
970 | PyObject_HEAD | |
971 | int livep; | |
972 | mpmul mm; | |
973 | } mpmul_pyobj; | |
974 | ||
975 | #define MPMUL_LIVEP(o) (((mpmul_pyobj *)(o))->livep) | |
976 | #define MPMUL_PY(o) (&((mpmul_pyobj *)(o))->mm) | |
977 | ||
978 | static void mpmul_pydealloc(PyObject *me) | |
979 | { | |
980 | if (MPMUL_LIVEP(me)) | |
981 | mp_drop(mpmul_done(MPMUL_PY(me))); | |
982 | FREEOBJ(me); | |
983 | } | |
984 | ||
985 | static PyObject *mmmeth_factor(PyObject *me, PyObject *arg) | |
d7ab1bab | 986 | { |
d7ab1bab | 987 | PyObject *q, *i; |
988 | mp *x; | |
989 | ||
32507e35 MW |
990 | if (!MPMUL_LIVEP(me)) VALERR("MPMul object invalid"); |
991 | if (PyTuple_Size(arg) != 1) | |
d7ab1bab | 992 | i = PyObject_GetIter(arg); |
32507e35 MW |
993 | else { |
994 | if ((q = PyTuple_GetItem(arg, 0)) == 0) goto end; | |
d7ab1bab | 995 | if ((i = PyObject_GetIter(q)) == 0) { |
996 | PyErr_Clear(); /* that's ok */ | |
997 | i = PyObject_GetIter(arg); | |
998 | } | |
999 | } | |
32507e35 | 1000 | if (!i) goto end; |
d7ab1bab | 1001 | while ((q = PyIter_Next(i)) != 0) { |
1002 | x = getmp(q); Py_DECREF(q); if (!x) { | |
d7ab1bab | 1003 | Py_DECREF(i); |
32507e35 | 1004 | goto end; |
d7ab1bab | 1005 | } |
32507e35 | 1006 | mpmul_add(MPMUL_PY(me), x); |
d7ab1bab | 1007 | MP_DROP(x); |
1008 | } | |
d7ab1bab | 1009 | Py_DECREF(i); |
32507e35 MW |
1010 | RETURN_ME; |
1011 | end: | |
1012 | return (0); | |
1013 | } | |
1014 | ||
1015 | static PyObject *mmmeth_done(PyObject *me, PyObject *arg) | |
1016 | { | |
1017 | mp *x; | |
1018 | ||
1019 | if (!PyArg_ParseTuple(arg, ":done")) goto end; | |
1020 | if (!MPMUL_LIVEP(me)) VALERR("MPMul object invalid"); | |
1021 | x = mpmul_done(MPMUL_PY(me)); | |
1022 | MPMUL_LIVEP(me) = 0; | |
d7ab1bab | 1023 | return (mp_pywrap(x)); |
32507e35 MW |
1024 | end: |
1025 | return (0); | |
d7ab1bab | 1026 | } |
1027 | ||
32507e35 MW |
1028 | static PyObject *mpmul_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) |
1029 | { | |
1030 | mpmul_pyobj *mm; | |
1031 | ||
1032 | if (kw) TYERR("keyword arguments not allowed here"); | |
1033 | mm = (mpmul_pyobj *)ty->tp_alloc(ty, 0); | |
1034 | mpmul_init(&mm->mm); | |
1035 | mm->livep = 1; | |
1036 | if (mmmeth_factor((PyObject *)mm, arg) == 0) { | |
1037 | Py_DECREF(mm); | |
1038 | goto end; | |
d7ab1bab | 1039 | } |
32507e35 MW |
1040 | return ((PyObject *)mm); |
1041 | end: | |
1042 | return (0); | |
1043 | } | |
1044 | ||
1045 | static PyObject *mmget_livep(PyObject *me, void *hunoz) | |
1046 | { return (getbool(MPMUL_LIVEP(me))); } | |
1047 | ||
1048 | static PyGetSetDef mpmul_pygetset[] = { | |
1049 | #define GETSETNAME(op, name) mm##op##_##name | |
1050 | GET (livep, "MM.livep -> flag: object still valid?") | |
1051 | #undef GETSETNAME | |
1052 | { 0 } | |
1053 | }; | |
1054 | ||
1055 | static PyMethodDef mpmul_pymethods[] = { | |
1056 | #define METHNAME(name) mmmeth_##name | |
1057 | METH (factor, "MM.factor(ITERABLE) or MM.factor(I, ...)") | |
1058 | METH (done, "MM.done() -> PRODUCT") | |
1059 | #undef METHNAME | |
1060 | { 0 } | |
1061 | }; | |
1062 | ||
1063 | static PyTypeObject *mpmul_pytype, mpmul_pytype_skel = { | |
1064 | PyObject_HEAD_INIT(0) 0, /* Header */ | |
c461c9b3 | 1065 | "MPMul", /* @tp_name@ */ |
32507e35 MW |
1066 | sizeof(mpmul_pyobj), /* @tp_basicsize@ */ |
1067 | 0, /* @tp_itemsize@ */ | |
1068 | ||
1069 | mpmul_pydealloc, /* @tp_dealloc@ */ | |
1070 | 0, /* @tp_print@ */ | |
1071 | 0, /* @tp_getattr@ */ | |
1072 | 0, /* @tp_setattr@ */ | |
1073 | 0, /* @tp_compare@ */ | |
1074 | 0, /* @tp_repr@ */ | |
1075 | 0, /* @tp_as_number@ */ | |
1076 | 0, /* @tp_as_sequence@ */ | |
1077 | 0, /* @tp_as_mapping@ */ | |
1078 | 0, /* @tp_hash@ */ | |
1079 | 0, /* @tp_call@ */ | |
1080 | 0, /* @tp_str@ */ | |
1081 | 0, /* @tp_getattro@ */ | |
1082 | 0, /* @tp_setattro@ */ | |
1083 | 0, /* @tp_as_buffer@ */ | |
1084 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
1085 | Py_TPFLAGS_BASETYPE, | |
1086 | ||
1087 | /* @tp_doc@ */ | |
1088 | "An object for multiplying many small integers.", | |
1089 | ||
1090 | 0, /* @tp_traverse@ */ | |
1091 | 0, /* @tp_clear@ */ | |
1092 | 0, /* @tp_richcompare@ */ | |
1093 | 0, /* @tp_weaklistoffset@ */ | |
1094 | 0, /* @tp_iter@ */ | |
1095 | 0, /* @tp_iternext@ */ | |
1096 | mpmul_pymethods, /* @tp_methods@ */ | |
1097 | 0, /* @tp_members@ */ | |
1098 | mpmul_pygetset, /* @tp_getset@ */ | |
1099 | 0, /* @tp_base@ */ | |
1100 | 0, /* @tp_dict@ */ | |
1101 | 0, /* @tp_descr_get@ */ | |
1102 | 0, /* @tp_descr_set@ */ | |
1103 | 0, /* @tp_dictoffset@ */ | |
1104 | 0, /* @tp_init@ */ | |
1105 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
1106 | mpmul_pynew, /* @tp_new@ */ | |
1107 | 0, /* @tp_free@ */ | |
1108 | 0 /* @tp_is_gc@ */ | |
1109 | }; | |
d7ab1bab | 1110 | |
1111 | /*----- Montgomery reduction ----------------------------------------------*/ | |
1112 | ||
1113 | typedef struct mpmont_pyobj { | |
1114 | PyObject_HEAD | |
1115 | mpmont mm; | |
1116 | } mpmont_pyobj; | |
1117 | ||
1118 | #define MPMONT_PY(o) (&((mpmont_pyobj *)(o))->mm) | |
1119 | ||
1120 | static PyObject *mmmeth_int(PyObject *me, PyObject *arg) | |
1121 | { | |
1122 | PyObject *z = 0; | |
1123 | mp *yy = 0; | |
1124 | mpmont *mm = MPMONT_PY(me); | |
1125 | ||
1126 | if (!PyArg_ParseTuple(arg, "O&:in", convmp, &yy)) | |
1127 | goto end; | |
1128 | mp_div(0, &yy, yy, mm->m); | |
1129 | z = mp_pywrap(mpmont_mul(mm, MP_NEW, yy, mm->r2)); | |
1130 | end: | |
1131 | if (yy) MP_DROP(yy); | |
1132 | return (z); | |
1133 | } | |
1134 | ||
1135 | static PyObject *mmmeth_mul(PyObject *me, PyObject *arg) | |
1136 | { | |
1137 | PyObject *rc = 0; | |
1138 | mp *yy = 0, *zz = 0; | |
1139 | ||
1140 | if (!PyArg_ParseTuple(arg, "O&O&:mul", convmp, &yy, convmp, &zz)) | |
1141 | goto end; | |
1142 | rc = mp_pywrap(mpmont_mul(MPMONT_PY(me), MP_NEW, yy, zz)); | |
1143 | end: | |
1144 | if (yy) MP_DROP(yy); if (zz) MP_DROP(zz); | |
1145 | return (rc); | |
1146 | } | |
1147 | ||
1148 | static PyObject *mmmeth_exp(PyObject *me, PyObject *arg) | |
1149 | { | |
1150 | PyObject *rc = 0; | |
1151 | mp *yy = 0, *zz = 0; | |
1152 | ||
1153 | if (!PyArg_ParseTuple(arg, "O&O&:exp", convmp, &yy, convmp, &zz)) | |
1154 | goto end; | |
1155 | if (MP_NEGP(zz)) { | |
1156 | if ((yy = mp_modinv_checked(yy, yy, MPMONT_PY(me)->m)) == 0) goto end; | |
1157 | zz = mp_neg(zz, zz); | |
1158 | } | |
1159 | rc = mp_pywrap(mpmont_exp(MPMONT_PY(me), MP_NEW, yy, zz)); | |
1160 | end: | |
1161 | if (yy) MP_DROP(yy); if (zz) MP_DROP(zz); | |
1162 | return (rc); | |
1163 | } | |
1164 | ||
1165 | static PyObject *mmmeth_expr(PyObject *me, PyObject *arg) | |
1166 | { | |
1167 | PyObject *rc = 0; | |
1168 | mp *yy = 0, *zz = 0; | |
1169 | ||
1170 | if (!PyArg_ParseTuple(arg, "O&O&:expr", convmp, &yy, convmp, &zz)) | |
1171 | goto end; | |
1172 | if (MP_NEGP(zz)) { | |
1173 | yy = mpmont_reduce(MPMONT_PY(me), yy, yy); | |
1174 | if ((yy = mp_modinv_checked(yy, yy, MPMONT_PY(me)->m)) == 0) goto end; | |
1175 | yy = mpmont_mul(MPMONT_PY(me), yy, yy, MPMONT_PY(me)->r2); | |
1176 | zz = mp_neg(zz, zz); | |
1177 | } | |
1178 | rc = mp_pywrap(mpmont_expr(MPMONT_PY(me), MP_NEW, yy, zz)); | |
1179 | end: | |
1180 | if (yy) MP_DROP(yy); if (zz) MP_DROP(zz); | |
1181 | return (rc); | |
1182 | } | |
1183 | ||
1184 | static PyObject *mm_mexpr_id(PyObject *me) | |
1185 | { return mp_pywrap(MP_COPY(MPMONT_PY(me)->r)); } | |
1186 | ||
1187 | static int mm_mexpr_fill(void *p, PyObject *me, PyObject *x, PyObject *y) | |
1188 | { | |
1189 | mp *xx = 0, *yy = 0; | |
1190 | mp_expfactor *f = p; | |
1191 | mpmont *mm = MPMONT_PY(me); | |
1192 | ||
1193 | if ((xx = getmp(x)) == 0 || (yy = getmp(y)) == 0) | |
1194 | goto fail; | |
1195 | if (MP_NEGP(yy)) { | |
1196 | xx = mpmont_reduce(mm, xx, xx); | |
1197 | if ((xx = mp_modinv_checked(xx, xx, yy)) == 0) | |
1198 | goto fail; | |
1199 | xx = mpmont_mul(mm, xx, xx, mm->r2); | |
1200 | yy = mp_neg(yy, yy); | |
1201 | } | |
1202 | f->base = xx; | |
1203 | f->exp = yy; | |
1204 | return (0); | |
1205 | ||
1206 | fail: | |
1207 | mp_drop(xx); mp_drop(yy); | |
1208 | return (-1); | |
1209 | } | |
1210 | ||
1211 | static PyObject *mm_mexpr(PyObject *me, void *v, int n) | |
1212 | { return mp_pywrap(mpmont_mexpr(MPMONT_PY(me), MP_NEW, v, n)); } | |
b2687a0a | 1213 | |
d7ab1bab | 1214 | static void mp_mexp_drop(void *p) |
1215 | { | |
1216 | mp_expfactor *f = p; | |
1217 | mp_drop(f->base); | |
1218 | mp_drop(f->exp); | |
1219 | } | |
1220 | ||
1221 | static PyObject *mmmeth_mexpr(PyObject *me, PyObject *arg) | |
1222 | { | |
1223 | return mexp_common(me, arg, sizeof(mp_expfactor), | |
1224 | mm_mexpr_id, mm_mexpr_fill, mm_mexpr, mp_mexp_drop); | |
1225 | } | |
1226 | ||
1227 | static PyObject *mp_mexp_id(PyObject *me) | |
1228 | { return mp_pywrap(MP_ONE); } | |
1229 | ||
1230 | static int mp_mexp_fill(void *p, PyObject *me, PyObject *x, PyObject *y) | |
1231 | { | |
1232 | mp *xx = 0, *yy = 0; | |
1233 | mp_expfactor *f = p; | |
1234 | ||
1235 | if ((xx = getmp(x)) == 0 || (yy = getmp(y)) == 0) | |
1236 | goto fail; | |
1237 | if (MP_NEGP(yy)) { | |
1238 | if ((xx = mp_modinv_checked(xx, xx, yy)) == 0) | |
1239 | goto fail; | |
1240 | yy = mp_neg(yy, yy); | |
1241 | } | |
1242 | f->base = xx; | |
1243 | f->exp = yy; | |
1244 | return (0); | |
1245 | ||
1246 | fail: | |
1247 | mp_drop(xx); mp_drop(yy); | |
1248 | return (-1); | |
1249 | } | |
1250 | ||
1251 | static PyObject *mm_mexp(PyObject *me, void *v, int n) | |
1252 | { return mp_pywrap(mpmont_mexp(MPMONT_PY(me), MP_NEW, v, n)); } | |
b2687a0a | 1253 | |
d7ab1bab | 1254 | static PyObject *mmmeth_mexp(PyObject *me, PyObject *arg) |
1255 | { | |
1256 | return mexp_common(me, arg, sizeof(mp_expfactor), | |
1257 | mp_mexp_id, mp_mexp_fill, mm_mexp, mp_mexp_drop); | |
1258 | } | |
1259 | ||
1260 | #define mmmeth_ext mmmeth_reduce | |
1261 | static PyObject *mmmeth_reduce(PyObject *me, PyObject *arg) | |
1262 | { | |
1263 | PyObject *z = 0; | |
1264 | mp *yy = 0; | |
1265 | ||
1266 | if (!PyArg_ParseTuple(arg, "O&", convmp, &yy)) goto end; | |
1267 | z = mp_pywrap(mpmont_reduce(MPMONT_PY(me), MP_NEW, yy)); | |
1268 | end: | |
1269 | return (z); | |
1270 | } | |
1271 | ||
1272 | static void mpmont_pydealloc(PyObject *me) | |
1273 | { | |
1274 | mpmont_destroy(MPMONT_PY(me)); | |
3aa33042 | 1275 | FREEOBJ(me); |
d7ab1bab | 1276 | } |
1277 | ||
1278 | static PyObject *mpmont_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
1279 | { | |
1280 | mpmont_pyobj *mm = 0; | |
1281 | char *kwlist[] = { "m", 0 }; | |
1282 | mp *xx = 0; | |
1283 | ||
1284 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", kwlist, convmp, &xx)) | |
1285 | goto end; | |
1286 | if (!MP_POSP(xx) || !MP_ODDP(xx)) VALERR("m must be positive and odd"); | |
1287 | mm = (mpmont_pyobj *)ty->tp_alloc(ty, 0); | |
1288 | mpmont_create(&mm->mm, xx); | |
1289 | end: | |
1290 | if (xx) MP_DROP(xx); | |
1291 | return ((PyObject *)mm); | |
1292 | } | |
1293 | ||
1294 | static PyObject *mmget_m(PyObject *me, void *hunoz) | |
1295 | { return (mp_pywrap(MP_COPY(MPMONT_PY(me)->m))); } | |
1296 | ||
1297 | static PyObject *mmget_r(PyObject *me, void *hunoz) | |
1298 | { return (mp_pywrap(MP_COPY(MPMONT_PY(me)->r))); } | |
1299 | ||
1300 | static PyObject *mmget_r2(PyObject *me, void *hunoz) | |
1301 | { return (mp_pywrap(MP_COPY(MPMONT_PY(me)->r2))); } | |
1302 | ||
1303 | static PyGetSetDef mpmont_pygetset[] = { | |
1304 | #define GETSETNAME(op, name) mm##op##_##name | |
1305 | GET (m, "M.m -> modulus for reduction") | |
1306 | GET (r, "M.r -> multiplicative identity") | |
1307 | GET (r2, "M.r2 -> M.r^2, Montgomerization factor") | |
1308 | #undef GETSETNAME | |
1309 | { 0 } | |
1310 | }; | |
1311 | ||
1312 | static PyMethodDef mpmont_pymethods[] = { | |
1313 | #define METHNAME(name) mmmeth_##name | |
5ec4e0d8 | 1314 | METH (int, "M.int(X) -> XR") |
d7ab1bab | 1315 | METH (mul, "M.mul(XR, YR) -> ZR where Z = X Y") |
1316 | METH (expr, "M.expr(XR, N) -> ZR where Z = X^N mod M.m") | |
1317 | METH (mexpr, "\ | |
5ec4e0d8 | 1318 | M.mexpr([(XR0, N0), (XR1, N1), ...]) = ZR where Z = X0^N0 X1^N1 ... mod M.m\n\ |
d7ab1bab | 1319 | \t(the list may be flattened if this more convenient.)") |
1320 | METH (reduce, "M.reduce(XR) -> X") | |
1321 | METH (ext, "M.ext(XR) -> X") | |
1322 | METH (exp, "M.exp(X, N) -> X^N mod M.m") | |
1323 | METH (mexp, "\ | |
5ec4e0d8 | 1324 | M.mexp([(X0, N0), (X1, N1), ...]) = X0^N0 X1^N1 ... mod M.m\n\ |
d7ab1bab | 1325 | \t(the list may be flattened if this more convenient.)") |
1326 | #undef METHNAME | |
1327 | { 0 } | |
1328 | }; | |
1329 | ||
1330 | static PyTypeObject *mpmont_pytype, mpmont_pytype_skel = { | |
6d4db0bf | 1331 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 1332 | "MPMont", /* @tp_name@ */ |
d7ab1bab | 1333 | sizeof(mpmont_pyobj), /* @tp_basicsize@ */ |
1334 | 0, /* @tp_itemsize@ */ | |
1335 | ||
1336 | mpmont_pydealloc, /* @tp_dealloc@ */ | |
1337 | 0, /* @tp_print@ */ | |
1338 | 0, /* @tp_getattr@ */ | |
1339 | 0, /* @tp_setattr@ */ | |
1340 | 0, /* @tp_compare@ */ | |
1341 | 0, /* @tp_repr@ */ | |
1342 | 0, /* @tp_as_number@ */ | |
1343 | 0, /* @tp_as_sequence@ */ | |
1344 | 0, /* @tp_as_mapping@ */ | |
1345 | 0, /* @tp_hash@ */ | |
1346 | 0, /* @tp_call@ */ | |
1347 | 0, /* @tp_str@ */ | |
1348 | 0, /* @tp_getattro@ */ | |
1349 | 0, /* @tp_setattro@ */ | |
1350 | 0, /* @tp_as_buffer@ */ | |
1351 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
1352 | Py_TPFLAGS_BASETYPE, | |
1353 | ||
1354 | /* @tp_doc@ */ | |
1355 | "A Montgomery reduction context.", | |
1356 | ||
1357 | 0, /* @tp_traverse@ */ | |
1358 | 0, /* @tp_clear@ */ | |
1359 | 0, /* @tp_richcompare@ */ | |
1360 | 0, /* @tp_weaklistoffset@ */ | |
1361 | 0, /* @tp_iter@ */ | |
963a6148 | 1362 | 0, /* @tp_iternext@ */ |
d7ab1bab | 1363 | mpmont_pymethods, /* @tp_methods@ */ |
1364 | 0, /* @tp_members@ */ | |
1365 | mpmont_pygetset, /* @tp_getset@ */ | |
1366 | 0, /* @tp_base@ */ | |
1367 | 0, /* @tp_dict@ */ | |
1368 | 0, /* @tp_descr_get@ */ | |
1369 | 0, /* @tp_descr_set@ */ | |
1370 | 0, /* @tp_dictoffset@ */ | |
1371 | 0, /* @tp_init@ */ | |
1372 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
1373 | mpmont_pynew, /* @tp_new@ */ | |
3aa33042 | 1374 | 0, /* @tp_free@ */ |
d7ab1bab | 1375 | 0 /* @tp_is_gc@ */ |
1376 | }; | |
1377 | ||
1378 | /*----- Barrett reduction -------------------------------------------------*/ | |
1379 | ||
1380 | typedef struct mpbarrett_pyobj { | |
1381 | PyObject_HEAD | |
1382 | mpbarrett mb; | |
1383 | } mpbarrett_pyobj; | |
1384 | ||
1385 | #define MPBARRETT_PY(o) (&((mpbarrett_pyobj *)(o))->mb) | |
1386 | ||
1387 | static PyObject *mbmeth_exp(PyObject *me, PyObject *arg) | |
1388 | { | |
1389 | PyObject *rc = 0; | |
1390 | mp *yy = 0, *zz = 0; | |
1391 | ||
1392 | if (!PyArg_ParseTuple(arg, "O&O&:exp", convmp, &yy, convmp, &zz)) | |
1393 | goto end; | |
1394 | if (MP_NEGP(zz)) { | |
1395 | if ((yy = mp_modinv_checked(yy, yy, MPBARRETT_PY(me)->m)) == 0) goto end; | |
1396 | zz = mp_neg(zz, zz); | |
1397 | } | |
1398 | rc = mp_pywrap(mpbarrett_exp(MPBARRETT_PY(me), MP_NEW, yy, zz)); | |
1399 | end: | |
1400 | if (yy) MP_DROP(yy); if (zz) MP_DROP(zz); | |
1401 | return (rc); | |
1402 | } | |
1403 | ||
1404 | static PyObject *mb_mexp(PyObject *me, void *v, int n) | |
1405 | { return mp_pywrap(mpbarrett_mexp(MPBARRETT_PY(me), MP_NEW, v, n)); } | |
b2687a0a | 1406 | |
d7ab1bab | 1407 | static PyObject *mbmeth_mexp(PyObject *me, PyObject *arg) |
1408 | { | |
1409 | return mexp_common(me, arg, sizeof(mp_expfactor), | |
1410 | mp_mexp_id, mp_mexp_fill, mb_mexp, mp_mexp_drop); | |
1411 | } | |
1412 | ||
1413 | static PyObject *mbmeth_reduce(PyObject *me, PyObject *arg) | |
1414 | { | |
1415 | PyObject *z = 0; | |
1416 | mp *yy = 0; | |
1417 | ||
1418 | if (!PyArg_ParseTuple(arg, "O&:reduce", convmp, &yy)) | |
1419 | goto end; | |
1420 | z = mp_pywrap(mpbarrett_reduce(MPBARRETT_PY(me), MP_NEW, yy)); | |
1421 | end: | |
1422 | return (z); | |
1423 | } | |
1424 | ||
1425 | static void mpbarrett_pydealloc(PyObject *me) | |
1426 | { | |
1427 | mpbarrett_destroy(MPBARRETT_PY(me)); | |
3aa33042 | 1428 | FREEOBJ(me); |
d7ab1bab | 1429 | } |
1430 | ||
1431 | static PyObject *mpbarrett_pynew(PyTypeObject *ty, | |
1432 | PyObject *arg, PyObject *kw) | |
1433 | { | |
1434 | mpbarrett_pyobj *mb = 0; | |
1435 | char *kwlist[] = { "m", 0 }; | |
1436 | mp *xx = 0; | |
1437 | ||
1438 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", kwlist, convmp, &xx)) | |
1439 | goto end; | |
1440 | if (!MP_POSP(xx)) VALERR("m must be positive"); | |
1441 | mb = (mpbarrett_pyobj *)ty->tp_alloc(ty, 0); | |
1442 | mpbarrett_create(&mb->mb, xx); | |
1443 | end: | |
1444 | if (xx) MP_DROP(xx); | |
1445 | return ((PyObject *)mb); | |
1446 | } | |
1447 | ||
1448 | static PyObject *mbget_m(PyObject *me, void *hunoz) | |
1449 | { return (mp_pywrap(MP_COPY(MPBARRETT_PY(me)->m))); } | |
1450 | ||
1451 | static PyGetSetDef mpbarrett_pygetset[] = { | |
1452 | #define GETSETNAME(op, name) mb##op##_##name | |
1453 | GET (m, "B.m -> modulus for reduction") | |
1454 | #undef GETSETNAME | |
1455 | { 0 } | |
1456 | }; | |
1457 | ||
1458 | static PyMethodDef mpbarrett_pymethods[] = { | |
1459 | #define METHNAME(name) mbmeth_##name | |
1460 | METH (reduce, "B.reduce(X) -> X mod B.m") | |
1461 | METH (exp, "B.exp(X, N) -> X^N mod B.m") | |
1462 | METH (mexp, "\ | |
5ec4e0d8 | 1463 | B.mexp([(X0, N0), (X1, N1), ...]) = X0^N0 X1^N1 ... mod B.m\n\ |
d7ab1bab | 1464 | \t(the list may be flattened if this more convenient.)") |
1465 | #undef METHNAME | |
1466 | { 0 } | |
1467 | }; | |
1468 | ||
1469 | static PyTypeObject *mpbarrett_pytype, mpbarrett_pytype_skel = { | |
6d4db0bf | 1470 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 1471 | "MPBarrett", /* @tp_name@ */ |
d7ab1bab | 1472 | sizeof(mpbarrett_pyobj), /* @tp_basicsize@ */ |
1473 | 0, /* @tp_itemsize@ */ | |
1474 | ||
1475 | mpbarrett_pydealloc, /* @tp_dealloc@ */ | |
1476 | 0, /* @tp_print@ */ | |
1477 | 0, /* @tp_getattr@ */ | |
1478 | 0, /* @tp_setattr@ */ | |
1479 | 0, /* @tp_compare@ */ | |
1480 | 0, /* @tp_repr@ */ | |
1481 | 0, /* @tp_as_number@ */ | |
1482 | 0, /* @tp_as_sequence@ */ | |
1483 | 0, /* @tp_as_mapping@ */ | |
1484 | 0, /* @tp_hash@ */ | |
1485 | 0, /* @tp_call@ */ | |
1486 | 0, /* @tp_str@ */ | |
1487 | 0, /* @tp_getattro@ */ | |
1488 | 0, /* @tp_setattro@ */ | |
1489 | 0, /* @tp_as_buffer@ */ | |
1490 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
1491 | Py_TPFLAGS_BASETYPE, | |
1492 | ||
1493 | /* @tp_doc@ */ | |
1494 | "A Barrett reduction context.", | |
1495 | ||
1496 | 0, /* @tp_traverse@ */ | |
1497 | 0, /* @tp_clear@ */ | |
1498 | 0, /* @tp_richcompare@ */ | |
1499 | 0, /* @tp_weaklistoffset@ */ | |
1500 | 0, /* @tp_iter@ */ | |
963a6148 | 1501 | 0, /* @tp_iternext@ */ |
d7ab1bab | 1502 | mpbarrett_pymethods, /* @tp_methods@ */ |
1503 | 0, /* @tp_members@ */ | |
1504 | mpbarrett_pygetset, /* @tp_getset@ */ | |
1505 | 0, /* @tp_base@ */ | |
1506 | 0, /* @tp_dict@ */ | |
1507 | 0, /* @tp_descr_get@ */ | |
1508 | 0, /* @tp_descr_set@ */ | |
1509 | 0, /* @tp_dictoffset@ */ | |
1510 | 0, /* @tp_init@ */ | |
1511 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
1512 | mpbarrett_pynew, /* @tp_new@ */ | |
3aa33042 | 1513 | 0, /* @tp_free@ */ |
d7ab1bab | 1514 | 0 /* @tp_is_gc@ */ |
1515 | }; | |
1516 | ||
1517 | /*----- Nice prime reduction ----------------------------------------------*/ | |
1518 | ||
1519 | typedef struct mpreduce_pyobj { | |
1520 | PyObject_HEAD | |
1521 | mpreduce mr; | |
1522 | } mpreduce_pyobj; | |
1523 | ||
1524 | #define MPREDUCE_PY(o) (&((mpreduce_pyobj *)(o))->mr) | |
1525 | ||
1526 | static PyObject *mrmeth_exp(PyObject *me, PyObject *arg) | |
1527 | { | |
1528 | PyObject *rc = 0; | |
1529 | mp *yy = 0, *zz = 0; | |
1530 | ||
1531 | if (!PyArg_ParseTuple(arg, "O&O&:exp", convmp, &yy, convmp, &zz)) | |
1532 | goto end; | |
1533 | if (MP_NEGP(zz)) { | |
1534 | if ((yy = mp_modinv_checked(yy, yy, MPREDUCE_PY(me)->p)) == 0) goto end; | |
1535 | zz = mp_neg(zz, zz); | |
1536 | } | |
1537 | rc = mp_pywrap(mpreduce_exp(MPREDUCE_PY(me), MP_NEW, yy, zz)); | |
1538 | end: | |
1539 | if (yy) MP_DROP(yy); if (zz) MP_DROP(zz); | |
1540 | return (rc); | |
1541 | } | |
1542 | ||
1543 | static PyObject *mrmeth_reduce(PyObject *me, PyObject *arg) | |
1544 | { | |
1545 | PyObject *z = 0; | |
1546 | mp *yy = 0; | |
1547 | ||
1548 | if (!PyArg_ParseTuple(arg, "O&:reduce", convmp, &yy)) goto end; | |
1549 | z = mp_pywrap(mpreduce_do(MPREDUCE_PY(me), MP_NEW, yy)); | |
1550 | end: | |
1551 | return (z); | |
1552 | } | |
1553 | ||
1554 | static void mpreduce_pydealloc(PyObject *me) | |
1555 | { | |
1556 | mpreduce_destroy(MPREDUCE_PY(me)); | |
3aa33042 | 1557 | FREEOBJ(me); |
d7ab1bab | 1558 | } |
1559 | ||
1560 | static PyObject *mpreduce_pynew(PyTypeObject *ty, | |
1561 | PyObject *arg, PyObject *kw) | |
1562 | { | |
1563 | mpreduce_pyobj *mr = 0; | |
1564 | mpreduce r; | |
1565 | char *kwlist[] = { "m", 0 }; | |
1566 | mp *xx = 0; | |
1567 | ||
1568 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", kwlist, convmp, &xx)) | |
1569 | goto end; | |
1570 | if (!MP_POSP(xx)) VALERR("m must be positive"); | |
1571 | if (mpreduce_create(&r, xx)) VALERR("bad modulus (must be 2^k - ...)"); | |
1572 | mr = (mpreduce_pyobj *)ty->tp_alloc(ty, 0); | |
1573 | mr->mr = r; | |
1574 | end: | |
1575 | if (xx) MP_DROP(xx); | |
1576 | return ((PyObject *)mr); | |
1577 | } | |
1578 | ||
1579 | static PyObject *mrget_m(PyObject *me, void *hunoz) | |
1580 | { return (mp_pywrap(MP_COPY(MPREDUCE_PY(me)->p))); } | |
1581 | ||
1582 | static PyGetSetDef mpreduce_pygetset[] = { | |
1583 | #define GETSETNAME(op, name) mr##op##_##name | |
1584 | GET (m, "R.m -> modulus for reduction") | |
1585 | #undef GETSETNAME | |
1586 | { 0 } | |
1587 | }; | |
1588 | ||
1589 | static PyMethodDef mpreduce_pymethods[] = { | |
1590 | #define METHNAME(name) mrmeth_##name | |
1591 | METH (reduce, "R.reduce(X) -> X mod B.m") | |
1592 | METH (exp, "R.exp(X, N) -> X^N mod B.m") | |
1593 | #undef METHNAME | |
1594 | { 0 } | |
1595 | }; | |
1596 | ||
1597 | static PyTypeObject *mpreduce_pytype, mpreduce_pytype_skel = { | |
6d4db0bf | 1598 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 1599 | "MPReduce", /* @tp_name@ */ |
d7ab1bab | 1600 | sizeof(mpreduce_pyobj), /* @tp_basicsize@ */ |
1601 | 0, /* @tp_itemsize@ */ | |
1602 | ||
1603 | mpreduce_pydealloc, /* @tp_dealloc@ */ | |
1604 | 0, /* @tp_print@ */ | |
1605 | 0, /* @tp_getattr@ */ | |
1606 | 0, /* @tp_setattr@ */ | |
1607 | 0, /* @tp_compare@ */ | |
1608 | 0, /* @tp_repr@ */ | |
1609 | 0, /* @tp_as_number@ */ | |
1610 | 0, /* @tp_as_sequence@ */ | |
1611 | 0, /* @tp_as_mapping@ */ | |
1612 | 0, /* @tp_hash@ */ | |
1613 | 0, /* @tp_call@ */ | |
1614 | 0, /* @tp_str@ */ | |
1615 | 0, /* @tp_getattro@ */ | |
1616 | 0, /* @tp_setattro@ */ | |
1617 | 0, /* @tp_as_buffer@ */ | |
1618 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
1619 | Py_TPFLAGS_BASETYPE, | |
1620 | ||
1621 | /* @tp_doc@ */ | |
1622 | "A reduction context for reduction modulo primes of special form.", | |
1623 | ||
1624 | 0, /* @tp_traverse@ */ | |
1625 | 0, /* @tp_clear@ */ | |
1626 | 0, /* @tp_richcompare@ */ | |
1627 | 0, /* @tp_weaklistoffset@ */ | |
1628 | 0, /* @tp_iter@ */ | |
963a6148 | 1629 | 0, /* @tp_iternext@ */ |
d7ab1bab | 1630 | mpreduce_pymethods, /* @tp_methods@ */ |
1631 | 0, /* @tp_members@ */ | |
1632 | mpreduce_pygetset, /* @tp_getset@ */ | |
1633 | 0, /* @tp_base@ */ | |
1634 | 0, /* @tp_dict@ */ | |
1635 | 0, /* @tp_descr_get@ */ | |
1636 | 0, /* @tp_descr_set@ */ | |
1637 | 0, /* @tp_dictoffset@ */ | |
1638 | 0, /* @tp_init@ */ | |
1639 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
1640 | mpreduce_pynew, /* @tp_new@ */ | |
3aa33042 | 1641 | 0, /* @tp_free@ */ |
d7ab1bab | 1642 | 0 /* @tp_is_gc@ */ |
1643 | }; | |
1644 | ||
1645 | /*----- Chinese Remainder Theorem solution --------------------------------*/ | |
1646 | ||
1647 | typedef struct mpcrt_pyobj { | |
1648 | PyObject_HEAD | |
1649 | mpcrt c; | |
1650 | } mpcrt_pyobj; | |
1651 | ||
1652 | #define MPCRT_PY(o) (&((mpcrt_pyobj *)(o))->c) | |
1653 | ||
1654 | static PyObject *mcmeth_solve(PyObject *me, PyObject *arg) | |
1655 | { | |
1656 | mpcrt *c = MPCRT_PY(me); | |
1657 | PyObject *q = 0, *x, *z = 0; | |
1658 | mp *xx; | |
1659 | mp **v = 0; | |
1660 | int i = 0, n = c->k; | |
1661 | ||
1662 | Py_INCREF(me); | |
1663 | if (PyTuple_Size(arg) == n) | |
1664 | q = arg; | |
1665 | else if (!PyArg_ParseTuple(arg, "O:solve", &q)) | |
1666 | goto end; | |
1667 | Py_INCREF(q); | |
1668 | if (!PySequence_Check(q)) TYERR("want a sequence of residues"); | |
1669 | if (PySequence_Size(q) != n) VALERR("residue count mismatch"); | |
1670 | v = xmalloc(n * sizeof(*v)); | |
1671 | for (i = 0; i < n; i++) { | |
1672 | if ((x = PySequence_GetItem(q, i)) == 0) goto end; | |
1673 | xx = getmp(x); Py_DECREF(x); if (!xx) goto end; | |
1674 | v[i] = xx; | |
1675 | } | |
1676 | z = mp_pywrap(mpcrt_solve(c, MP_NEW, v)); | |
1677 | end: | |
1678 | if (v) { | |
1679 | n = i; | |
1680 | for (i = 0; i < n; i++) | |
1681 | MP_DROP(v[i]); | |
1682 | xfree(v); | |
1683 | } | |
1684 | Py_DECREF(me); | |
1685 | Py_XDECREF(q); | |
1686 | return (z); | |
1687 | } | |
1688 | ||
1689 | static void mpcrt_pydealloc(PyObject *me) | |
1690 | { | |
1691 | mpcrt *c = MPCRT_PY(me); | |
1692 | mpcrt_destroy(c); | |
1693 | xfree(c->v); | |
1694 | } | |
1695 | ||
1696 | static PyObject *mpcrt_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
1697 | { | |
1698 | mpcrt_mod *v = 0; | |
1699 | int n, i = 0; | |
1700 | char *kwlist[] = { "mv", 0 }; | |
1701 | PyObject *q = 0, *x; | |
1702 | mp *xx; | |
1703 | mpcrt_pyobj *c = 0; | |
1704 | ||
1705 | if (PyTuple_Size(arg) > 1) | |
1706 | q = arg; | |
1707 | else if (!PyArg_ParseTupleAndKeywords(arg, kw, "O:new", kwlist, &q)) | |
1708 | goto end; | |
1709 | Py_INCREF(q); | |
1710 | if (!PySequence_Check(q)) TYERR("want a sequence of moduli"); | |
1711 | n = PySequence_Size(q); | |
1712 | if (PyErr_Occurred()) goto end; | |
1713 | if (!n) VALERR("want at least one modulus"); | |
1714 | v = xmalloc(n * sizeof(*v)); | |
1715 | for (i = 0; i < n; i++) { | |
1716 | if ((x = PySequence_GetItem(q, i)) == 0) goto end; | |
1717 | xx = getmp(x); Py_DECREF(x); if (!xx) goto end; | |
1718 | v[i].m = xx; v[i].n = 0; v[i].ni = 0; v[i].nni = 0; | |
1719 | } | |
1720 | c = (mpcrt_pyobj *)ty->tp_alloc(ty, 0); | |
1721 | mpcrt_create(&c->c, v, n, 0); | |
1722 | Py_DECREF(q); | |
1723 | return ((PyObject *)c); | |
1724 | ||
1725 | end: | |
1726 | if (v) { | |
1727 | n = i; | |
1728 | for (i = 0; i < n; i++) | |
1729 | MP_DROP(v[i].m); | |
1730 | xfree(v); | |
1731 | } | |
1732 | Py_XDECREF(q); | |
1733 | return (0); | |
1734 | } | |
1735 | ||
1736 | static PyObject *mcget_product(PyObject *me, void *hunoz) | |
1737 | { return (mp_pywrap(MP_COPY(MPCRT_PY(me)->mb.m))); } | |
1738 | ||
1739 | static PyObject *mcget_moduli(PyObject *me, void *hunoz) | |
1740 | { | |
1741 | int i; | |
1742 | PyObject *q; | |
1743 | mpcrt *c = MPCRT_PY(me); | |
1744 | ||
1745 | if ((q = PyList_New(c->k)) == 0) return (0); | |
1746 | for (i = 0; i < c->k; i++) | |
1747 | PyList_SetItem(q, i, mp_pywrap(c->v[i].m)); | |
1748 | return (q); | |
1749 | } | |
1750 | ||
1751 | static PyGetSetDef mpcrt_pygetset[] = { | |
1752 | #define GETSETNAME(op, name) mc##op##_##name | |
1753 | GET (product, "C.product -> product of moduli") | |
1754 | GET (moduli, "C.moduli -> list of individual moduli") | |
1755 | #undef GETSETNAME | |
1756 | { 0 } | |
1757 | }; | |
1758 | ||
1759 | static PyMethodDef mpcrt_pymethods[] = { | |
1760 | #define METHNAME(name) mcmeth_##name | |
1761 | METH (solve, "C.solve([R0, R1]) -> X mod C.product") | |
1762 | #undef METHNAME | |
1763 | { 0 } | |
1764 | }; | |
1765 | ||
1766 | static PyTypeObject *mpcrt_pytype, mpcrt_pytype_skel = { | |
6d4db0bf | 1767 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 1768 | "MPCRT", /* @tp_name@ */ |
d7ab1bab | 1769 | sizeof(mpcrt_pyobj), /* @tp_basicsize@ */ |
1770 | 0, /* @tp_itemsize@ */ | |
1771 | ||
1772 | mpcrt_pydealloc, /* @tp_dealloc@ */ | |
1773 | 0, /* @tp_print@ */ | |
1774 | 0, /* @tp_getattr@ */ | |
1775 | 0, /* @tp_setattr@ */ | |
1776 | 0, /* @tp_compare@ */ | |
1777 | 0, /* @tp_repr@ */ | |
1778 | 0, /* @tp_as_number@ */ | |
1779 | 0, /* @tp_as_sequence@ */ | |
1780 | 0, /* @tp_as_mapping@ */ | |
1781 | 0, /* @tp_hash@ */ | |
1782 | 0, /* @tp_call@ */ | |
1783 | 0, /* @tp_str@ */ | |
1784 | 0, /* @tp_getattro@ */ | |
1785 | 0, /* @tp_setattro@ */ | |
1786 | 0, /* @tp_as_buffer@ */ | |
1787 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
1788 | Py_TPFLAGS_BASETYPE, | |
1789 | ||
1790 | /* @tp_doc@ */ | |
1791 | "A context for the solution of Chinese Remainder Theorem problems.", | |
1792 | ||
1793 | 0, /* @tp_traverse@ */ | |
1794 | 0, /* @tp_clear@ */ | |
1795 | 0, /* @tp_richcompare@ */ | |
1796 | 0, /* @tp_weaklistoffset@ */ | |
1797 | 0, /* @tp_iter@ */ | |
963a6148 | 1798 | 0, /* @tp_iternext@ */ |
d7ab1bab | 1799 | mpcrt_pymethods, /* @tp_methods@ */ |
1800 | 0, /* @tp_members@ */ | |
1801 | mpcrt_pygetset, /* @tp_getset@ */ | |
1802 | 0, /* @tp_base@ */ | |
1803 | 0, /* @tp_dict@ */ | |
1804 | 0, /* @tp_descr_get@ */ | |
1805 | 0, /* @tp_descr_set@ */ | |
1806 | 0, /* @tp_dictoffset@ */ | |
1807 | 0, /* @tp_init@ */ | |
1808 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
1809 | mpcrt_pynew, /* @tp_new@ */ | |
3aa33042 | 1810 | 0, /* @tp_free@ */ |
d7ab1bab | 1811 | 0 /* @tp_is_gc@ */ |
1812 | }; | |
1813 | ||
1814 | /*----- Binary polynomials ------------------------------------------------*/ | |
1815 | ||
1816 | static PyObject *gf_pyrepr(PyObject *o) | |
1817 | { return mp_topystring(MP_X(o), 16, "GF(", "0x", "L)"); } | |
1818 | ||
1819 | static PyObject *gf_pyrichcompare(PyObject *x, PyObject *y, int op) | |
1820 | { | |
1821 | mp *xx, *yy; | |
1822 | int xl, yl; | |
1823 | int b; | |
1824 | ||
bf8910bd | 1825 | if (gfbinop(x, y, &xx, &yy)) RETURN_NOTIMPL; |
d7ab1bab | 1826 | switch (op) { |
1827 | case Py_EQ: b = MP_EQ(xx, yy); break; | |
1828 | case Py_NE: b = !MP_EQ(xx, yy); break; | |
1829 | default: | |
1830 | xl = mp_bits(xx); | |
1831 | yl = mp_bits(yy); | |
1832 | switch (op) { | |
1833 | case Py_LT: b = xl < yl; break; | |
1834 | case Py_LE: b = xl <= yl; break; | |
1835 | case Py_GT: b = xl > yl; break; | |
1836 | case Py_GE: b = xl >= yl; break; | |
1837 | default: abort(); | |
1838 | } | |
1839 | break; | |
1840 | } | |
1841 | MP_DROP(xx); MP_DROP(yy); | |
1842 | return (getbool(b)); | |
1843 | } | |
1844 | ||
1845 | static PyObject *gf_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
1846 | { | |
1847 | PyObject *x; | |
1848 | mp *z; | |
1849 | mp_pyobj *zz = 0; | |
1850 | int radix = 0; | |
1851 | char *kwlist[] = { "x", "radix", 0 }; | |
1852 | ||
1853 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O|i:gf", kwlist, &x, &radix)) | |
1854 | goto end; | |
1855 | if (GF_PYCHECK(x)) RETURN_OBJ(x); | |
f368b46e | 1856 | if (!good_radix_p(radix, 1)) VALERR("radix out of range"); |
d7ab1bab | 1857 | if ((z = mp_frompyobject(x, radix)) == 0) { |
1858 | PyErr_Format(PyExc_TypeError, "can't convert %.100s to gf", | |
1859 | x->ob_type->tp_name); | |
1860 | goto end; | |
1861 | } | |
1862 | if (MP_NEGP(z)) { | |
1863 | MP_DROP(z); | |
1864 | VALERR("gf cannot be negative"); | |
1865 | } | |
1866 | zz = (mp_pyobj *)ty->tp_alloc(ty, 0); | |
1867 | zz->x = z; | |
1868 | end: | |
1869 | return ((PyObject *)zz); | |
1870 | } | |
1871 | ||
1872 | static long gf_pyhash(PyObject *me) | |
1873 | { | |
1874 | long i = mp_tolong(MP_X(me)); | |
1875 | i ^= 0xc7ecd67c; /* random perturbance */ | |
1876 | if (i == -1) | |
1877 | i = -2; | |
1878 | return (i); | |
1879 | } | |
1880 | ||
1881 | static PyObject *gf_pyexp(PyObject *x, PyObject *y, PyObject *z) | |
1882 | { | |
1883 | mp *xx = 0, *yy = 0, *zz = 0; | |
1884 | mp *r = 0; | |
1885 | PyObject *rc = 0; | |
1886 | ||
1887 | if ((xx = tomp(x)) == 0 || (yy = tomp(y)) == 0 || | |
1888 | (z && z != Py_None && (zz = tomp(z)) == 0)) { | |
1889 | mp_drop(xx); mp_drop(yy); mp_drop(zz); | |
1890 | RETURN_NOTIMPL; | |
1891 | } | |
1892 | if (!z || z == Py_None) { | |
1893 | if (MP_NEGP(yy)) VALERR("negative exponent"); | |
1894 | r = gf_exp(MP_NEW, xx, yy); | |
1895 | } else { | |
1896 | gfreduce gr; | |
1897 | if (MP_ZEROP(zz)) ZDIVERR("zero modulus"); | |
1898 | if (MP_NEGP(yy)) { | |
1899 | if ((xx = gf_modinv_checked(xx, xx, zz)) == 0) goto end; | |
1900 | yy = mp_neg(yy, yy); | |
1901 | } | |
1902 | gfreduce_create(&gr, zz); | |
1903 | r = gfreduce_exp(&gr, MP_NEW, xx, yy); | |
1904 | gfreduce_destroy(&gr); | |
1905 | } | |
1906 | rc = gf_pywrap(r); | |
1907 | end: | |
1908 | mp_drop(xx); mp_drop(yy); mp_drop(zz); | |
1909 | return (rc); | |
1910 | } | |
1911 | ||
1912 | static PyObject *gfmeth_sqr(PyObject *me, PyObject *arg) | |
1913 | { | |
1914 | if (!PyArg_ParseTuple(arg, ":sqr")) return (0); | |
1915 | return (gf_pywrap(gf_sqr(MP_NEW, MP_X(me)))); | |
1916 | } | |
1917 | ||
1918 | static PyObject *gfmeth_gcd(PyObject *me, PyObject *arg) | |
1919 | { | |
1920 | PyObject *z = 0; | |
1921 | mp *yy = 0, *zz = MP_NEW; | |
1922 | ||
1923 | if (!PyArg_ParseTuple(arg, "O&:gcd", convgf, &yy)) goto end; | |
1924 | gf_gcd(&zz, 0, 0, MP_X(me), yy); | |
1925 | z = gf_pywrap(zz); | |
1926 | end: | |
1927 | if (yy) MP_DROP(yy); | |
1928 | return (z); | |
1929 | } | |
1930 | ||
1931 | static PyObject *gfmeth_gcdx(PyObject *me, PyObject *arg) | |
1932 | { | |
1933 | PyObject *z = 0; | |
1934 | mp *yy = 0, *zz = MP_NEW, *uu = MP_NEW, *vv = MP_NEW; | |
1935 | ||
1936 | if (!PyArg_ParseTuple(arg, "O&:gcdx", convgf, &yy)) | |
1937 | goto end; | |
1938 | gf_gcd(&zz, &uu, &vv, MP_X(me), yy); | |
1939 | z = Py_BuildValue("(NNN)", | |
1940 | gf_pywrap(zz), gf_pywrap(uu), gf_pywrap(vv)); | |
1941 | end: | |
1942 | if (yy) MP_DROP(yy); | |
1943 | return (z); | |
1944 | } | |
1945 | ||
1946 | static PyObject *gfmeth_modinv(PyObject *me, PyObject *arg) | |
1947 | { | |
1948 | PyObject *z = 0; | |
1949 | mp *yy = 0, *zz = MP_NEW; | |
1950 | ||
1951 | if (!PyArg_ParseTuple(arg, "O&:modinv", convgf, &yy) || | |
1952 | (zz = gf_modinv_checked(MP_NEW, yy, MP_X(me))) == 0) | |
1953 | goto end; | |
1954 | z = gf_pywrap(zz); | |
1955 | end: | |
1956 | if (yy) MP_DROP(yy); | |
1957 | return (z); | |
1958 | } | |
1959 | ||
1960 | static PyObject *gfmeth_irreduciblep(PyObject *me, PyObject *arg) | |
1961 | { | |
1962 | if (!PyArg_ParseTuple(arg, ":irreduciblep")) return (0); | |
1963 | return getbool(gf_irreduciblep(MP_X(me))); | |
1964 | } | |
1965 | ||
1966 | static PyObject *gfget_degree(PyObject *me, void *hunoz) | |
1967 | { return (PyInt_FromLong(mp_bits(MP_X(me)) - 1)); } | |
1968 | ||
1969 | static PyGetSetDef gf_pygetset[] = { | |
1970 | #define GETSETNAME(op, name) gf##op##_##name | |
1971 | GET (degree, "X.degree -> polynomial degree of X") | |
1972 | #undef GETSETNAME | |
1973 | #define GETSETNAME(op, name) mp##op##_##name | |
1974 | GET (nbits, "X.nbits -> bit length of X") | |
1975 | GET (noctets, "X.noctets -> octet length of X") | |
1976 | #undef GETSETNAME | |
1977 | { 0 } | |
1978 | }; | |
1979 | ||
1980 | static PyMethodDef gf_pymethods[] = { | |
1981 | #define METHNAME(func) gfmeth_##func | |
1982 | METH (setbit, "X.setbit(N) -> X with bit N set") | |
1983 | METH (clearbit, "X.clearbit(N) -> X with bit N clear") | |
1984 | METH (testbit, "X.testbit(N) -> true/false if bit N set/clear in X") | |
1985 | METH (sqr, "X.sqr() -> X^2") | |
1986 | METH (gcd, "X.gcd(Y) -> gcd(X, Y)") | |
1987 | METH (gcdx, | |
1988 | "X.gcdx(Y) -> (gcd(X, Y), U, V) with X U + Y V = gcd(X, Y)") | |
1989 | METH (modinv, "X.modinv(Y) -> multiplicative inverse of Y mod X") | |
b2687a0a | 1990 | METH (irreduciblep, "X.irreduciblep() -> true/false") |
d7ab1bab | 1991 | #undef METHNAME |
1992 | #define METHNAME(func) mpmeth_##func | |
1993 | KWMETH(tostring, "X.tostring(radix = 10) -> STR") | |
1994 | KWMETH(storel, "X.storel(len = -1) -> little-endian bytes") | |
1995 | KWMETH(storeb, "X.storeb(len = -1) -> big-endian bytes") | |
1996 | KWMETH(storel2c, | |
1997 | "X.storel2c(len = -1) -> little-endian bytes, two's complement") | |
1998 | KWMETH(storeb2c, | |
1999 | "X.storeb2c(len = -1) -> big-endian bytes, two's complement") | |
2000 | METH (tobuf, "X.tobuf() -> buffer format") | |
2001 | #undef METHNAME | |
2002 | { 0 } | |
2003 | }; | |
2004 | ||
2005 | static PyNumberMethods gf_pynumber = { | |
2006 | gf_pyadd, /* @nb_add@ */ | |
2007 | gf_pysub, /* @nb_subtract@ */ | |
2008 | gf_pymul, /* @nb_multiply@ */ | |
2009 | 0, /* @nb_divide@ */ | |
2010 | gf_pymod, /* @nb_remainder@ */ | |
2011 | gf_pydivmod, /* @nb_divmod@ */ | |
2012 | gf_pyexp, /* @nb_power@ */ | |
2013 | mp_pyid, /* @nb_negative@ */ | |
2014 | mp_pyid, /* @nb_positive@ */ | |
2015 | mp_pyid, /* @nb_absolute@ */ | |
2016 | mp_pynonzerop, /* @nb_nonzero@ */ | |
2017 | 0 /* doesn't make any sense */, /* @nb_invert@ */ | |
2018 | gf_pylsl, /* @nb_lshift@ */ | |
2019 | gf_pylsr, /* @nb_rshift@ */ | |
2020 | gf_pyand, /* @nb_and@ */ | |
2021 | gf_pyxor, /* @nb_xor@ */ | |
2022 | gf_pyor, /* @nb_or@ */ | |
2023 | gf_pycoerce, /* @nb_coerce@ */ | |
2024 | mp_pyint, /* @nb_int@ */ | |
2025 | mp_pylong, /* @nb_long@ */ | |
2026 | 0 /* doesn't make any sense */, /* @nb_float@ */ | |
2027 | mp_pyoct, /* @nb_oct@ */ | |
2028 | mp_pyhex, /* @nb_hex@ */ | |
2029 | ||
2030 | 0, /* @nb_inplace_add@ */ | |
2031 | 0, /* @nb_inplace_subtract@ */ | |
2032 | 0, /* @nb_inplace_multiply@ */ | |
2033 | 0, /* @nb_inplace_divide@ */ | |
2034 | 0, /* @nb_inplace_remainder@ */ | |
2035 | 0, /* @nb_inplace_power@ */ | |
2036 | 0, /* @nb_inplace_lshift@ */ | |
2037 | 0, /* @nb_inplace_rshift@ */ | |
2038 | 0, /* @nb_inplace_and@ */ | |
2039 | 0, /* @nb_inplace_xor@ */ | |
2040 | 0, /* @nb_inplace_or@ */ | |
2041 | ||
2042 | gf_pydiv, /* @nb_floor_divide@ */ | |
2043 | 0, /* @nb_true_divide@ */ | |
2044 | 0, /* @nb_inplace_floor_divide@ */ | |
2045 | 0, /* @nb_inplace_true_divide@ */ | |
2046 | }; | |
2047 | ||
2048 | static PyTypeObject gf_pytype_skel = { | |
6d4db0bf | 2049 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 2050 | "GF", /* @tp_name@ */ |
d7ab1bab | 2051 | sizeof(mp_pyobj), /* @tp_basicsize@ */ |
2052 | 0, /* @tp_itemsize@ */ | |
2053 | ||
2054 | mp_pydealloc, /* @tp_dealloc@ */ | |
2055 | 0, /* @tp_print@ */ | |
2056 | 0, /* @tp_getattr@ */ | |
2057 | 0, /* @tp_setattr@ */ | |
2058 | 0, /* @tp_compare@ */ | |
2059 | gf_pyrepr, /* @tp_repr@ */ | |
2060 | &gf_pynumber, /* @tp_as_number@ */ | |
2061 | 0, /* @tp_as_sequence@ */ | |
2062 | 0, /* @tp_as_mapping@ */ | |
2063 | gf_pyhash, /* @tp_hash@ */ | |
2064 | 0, /* @tp_call@ */ | |
2065 | mp_pyhex, /* @tp_str@ */ | |
2066 | 0, /* @tp_getattro@ */ | |
2067 | 0, /* @tp_setattro@ */ | |
2068 | 0, /* @tp_as_buffer@ */ | |
2069 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
2070 | Py_TPFLAGS_CHECKTYPES | | |
2071 | Py_TPFLAGS_BASETYPE, | |
2072 | ||
2073 | /* @tp_doc@ */ | |
2074 | "Binary polynomials. Support almost all the standard arithmetic\n\ | |
2075 | operations.\n\ | |
2076 | \n\ | |
2077 | Constructor gf(X, radix = R) attempts to convert X to a `gf'. If\n\ | |
2078 | X is a string, it's read in radix-R form, or we look for a prefix\n\ | |
2079 | if R = 0. Other acceptable things are ints and longs.\n\ | |
2080 | \n\ | |
2081 | The name is hopelessly wrong from a technical point of view, but\n\ | |
2082 | but it's much easier to type than `p2' or `c2' or whatever.\n\ | |
2083 | \n\ | |
2084 | Notes:\n\ | |
2085 | \n\ | |
2086 | * Use `//' for division. GFs don't have `/' division.", | |
2087 | ||
2088 | 0, /* @tp_traverse@ */ | |
2089 | 0, /* @tp_clear@ */ | |
2090 | gf_pyrichcompare, /* @tp_richcompare@ */ | |
2091 | 0, /* @tp_weaklistoffset@ */ | |
2092 | 0, /* @tp_iter@ */ | |
963a6148 | 2093 | 0, /* @tp_iternext@ */ |
d7ab1bab | 2094 | gf_pymethods, /* @tp_methods@ */ |
2095 | 0, /* @tp_members@ */ | |
2096 | gf_pygetset, /* @tp_getset@ */ | |
2097 | 0, /* @tp_base@ */ | |
2098 | 0, /* @tp_dict@ */ | |
2099 | 0, /* @tp_descr_get@ */ | |
2100 | 0, /* @tp_descr_set@ */ | |
2101 | 0, /* @tp_dictoffset@ */ | |
2102 | 0, /* @tp_init@ */ | |
2103 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
2104 | gf_pynew, /* @tp_new@ */ | |
3aa33042 | 2105 | 0, /* @tp_free@ */ |
d7ab1bab | 2106 | 0 /* @tp_is_gc@ */ |
2107 | }; | |
2108 | ||
2109 | static PyObject *meth__GF_fromstring(PyObject *me, | |
2110 | PyObject *arg, PyObject *kw) | |
2111 | { | |
2112 | int r = 0; | |
2113 | char *p; | |
2114 | int len; | |
2115 | PyObject *z = 0; | |
2116 | mp *zz; | |
2117 | mptext_stringctx sc; | |
2118 | char *kwlist[] = { "class", "x", "radix", 0 }; | |
2119 | ||
2120 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "Os#|i:fromstring", | |
2121 | kwlist, &me, &p, &len, &r)) | |
2122 | goto end; | |
4b3890c7 | 2123 | if (!good_radix_p(r, 1)) VALERR("bad radix"); |
d7ab1bab | 2124 | sc.buf = p; sc.lim = p + len; |
4b3890c7 MW |
2125 | if ((zz = mp_read(MP_NEW, r, &mptext_stringops, &sc)) == 0 || |
2126 | MP_NEGP(zz)) { | |
2127 | if (zz) MP_DROP(zz); | |
80f7cd89 | 2128 | VALERR("bad binary polynomial"); |
4b3890c7 MW |
2129 | } |
2130 | z = Py_BuildValue("(Ns#)", gf_pywrap(zz), sc.buf, (int)(sc.lim - sc.buf)); | |
d7ab1bab | 2131 | end: |
2132 | return (z); | |
2133 | } | |
2134 | ||
2135 | /*----- Sparse poly reduction ---------------------------------------------*/ | |
2136 | ||
2137 | typedef struct gfreduce_pyobj { | |
2138 | PyObject_HEAD | |
2139 | gfreduce mr; | |
2140 | } gfreduce_pyobj; | |
2141 | ||
2142 | #define GFREDUCE_PY(o) (&((gfreduce_pyobj *)(o))->mr) | |
2143 | ||
2144 | static PyObject *grmeth_exp(PyObject *me, PyObject *arg) | |
2145 | { | |
2146 | PyObject *rc = 0; | |
2147 | mp *yy = 0, *zz = 0; | |
2148 | ||
2149 | if (!PyArg_ParseTuple(arg, "O&O&:exp", convgf, &yy, convgf, &zz)) | |
2150 | goto end; | |
2151 | if (MP_NEGP(zz)) { | |
2152 | if ((yy = gf_modinv_checked(yy, yy, GFREDUCE_PY(me)->p)) == 0) goto end; | |
2153 | zz = mp_neg(zz, zz); | |
2154 | } | |
2155 | rc = gf_pywrap(gfreduce_exp(GFREDUCE_PY(me), MP_NEW, yy, zz)); | |
2156 | end: | |
2157 | if (yy) MP_DROP(yy); if (zz) MP_DROP(zz); | |
2158 | return (rc); | |
2159 | } | |
2160 | ||
fbc145f3 MW |
2161 | static PyObject *grmeth_trace(PyObject *me, PyObject *arg) |
2162 | { | |
2163 | PyObject *rc = 0; | |
2164 | mp *xx = 0; | |
2165 | ||
2166 | if (!PyArg_ParseTuple(arg, "O&:trace", convgf, &xx)) goto end; | |
2167 | rc = PyInt_FromLong(gfreduce_trace(GFREDUCE_PY(me), xx)); | |
2168 | end: | |
2169 | if (xx) MP_DROP(xx); | |
2170 | return (rc); | |
2171 | } | |
2172 | ||
2173 | static PyObject *grmeth_halftrace(PyObject *me, PyObject *arg) | |
2174 | { | |
2175 | PyObject *rc = 0; | |
2176 | mp *xx = 0; | |
2177 | ||
2178 | if (!PyArg_ParseTuple(arg, "O&:halftrace", convgf, &xx)) goto end; | |
2179 | rc = gf_pywrap(gfreduce_halftrace(GFREDUCE_PY(me), MP_NEW, xx)); | |
2180 | end: | |
2181 | if (xx) MP_DROP(xx); | |
2182 | return (rc); | |
2183 | } | |
2184 | ||
2185 | static PyObject *grmeth_sqrt(PyObject *me, PyObject *arg) | |
2186 | { | |
2187 | PyObject *rc = 0; | |
2188 | mp *xx = 0, *yy; | |
2189 | ||
2190 | if (!PyArg_ParseTuple(arg, "O&:sqrt", convgf, &xx)) goto end; | |
2191 | if ((yy = gfreduce_sqrt(GFREDUCE_PY(me), MP_NEW, xx)) == 0) | |
2192 | VALERR("no modular square root"); | |
2193 | rc = gf_pywrap(yy); | |
2194 | end: | |
2195 | if (xx) MP_DROP(xx); | |
2196 | return (rc); | |
2197 | } | |
2198 | ||
2199 | static PyObject *grmeth_quadsolve(PyObject *me, PyObject *arg) | |
2200 | { | |
2201 | PyObject *rc = 0; | |
2202 | mp *xx = 0, *yy; | |
2203 | ||
2204 | if (!PyArg_ParseTuple(arg, "O&:quadsolve", convgf, &xx)) goto end; | |
2205 | if ((yy = gfreduce_quadsolve(GFREDUCE_PY(me), MP_NEW, xx)) == 0) | |
2206 | VALERR("no solution found"); | |
2207 | rc = gf_pywrap(yy); | |
2208 | end: | |
2209 | if (xx) MP_DROP(xx); | |
2210 | return (rc); | |
2211 | } | |
2212 | ||
d7ab1bab | 2213 | static PyObject *grmeth_reduce(PyObject *me, PyObject *arg) |
2214 | { | |
2215 | PyObject *z = 0; | |
2216 | mp *yy = 0; | |
2217 | ||
2218 | if (!PyArg_ParseTuple(arg, "O&:reduce", convgf, &yy)) goto end; | |
2219 | z = gf_pywrap(gfreduce_do(GFREDUCE_PY(me), MP_NEW, yy)); | |
2220 | end: | |
2221 | return (z); | |
2222 | } | |
2223 | ||
2224 | static void gfreduce_pydealloc(PyObject *me) | |
2225 | { | |
2226 | gfreduce_destroy(GFREDUCE_PY(me)); | |
3aa33042 | 2227 | FREEOBJ(me); |
d7ab1bab | 2228 | } |
2229 | ||
2230 | static PyObject *gfreduce_pynew(PyTypeObject *ty, | |
2231 | PyObject *arg, PyObject *kw) | |
2232 | { | |
2233 | gfreduce_pyobj *mr = 0; | |
2234 | gfreduce r; | |
2235 | char *kwlist[] = { "m", 0 }; | |
2236 | mp *xx = 0; | |
2237 | ||
2238 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:new", kwlist, convgf, &xx)) | |
2239 | goto end; | |
2240 | if (MP_ZEROP(xx)) ZDIVERR("modulus is zero!"); | |
2241 | gfreduce_create(&r, xx); | |
2242 | mr = (gfreduce_pyobj *)ty->tp_alloc(ty, 0); | |
2243 | mr->mr = r; | |
2244 | end: | |
2245 | if (xx) MP_DROP(xx); | |
2246 | return ((PyObject *)mr); | |
2247 | } | |
2248 | ||
2249 | static PyObject *grget_m(PyObject *me, void *hunoz) | |
2250 | { return (gf_pywrap(MP_COPY(GFREDUCE_PY(me)->p))); } | |
2251 | ||
2252 | static PyGetSetDef gfreduce_pygetset[] = { | |
2253 | #define GETSETNAME(op, name) gr##op##_##name | |
2254 | GET (m, "R.m -> reduction polynomial") | |
2255 | #undef GETSETNAME | |
2256 | { 0 } | |
2257 | }; | |
2258 | ||
2259 | static PyMethodDef gfreduce_pymethods[] = { | |
2260 | #define METHNAME(name) grmeth_##name | |
2261 | METH (reduce, "R.reduce(X) -> X mod B.m") | |
fbc145f3 MW |
2262 | METH (trace, "R.trace(X) -> Tr(X) = x + x^2 + ... + x^{2^{m - 1}}") |
2263 | METH (halftrace, "R.halftrace(X) -> x + x^{2^2} + ... + x^{2^{m - 1}}") | |
2264 | METH (sqrt, "R.sqrt(X) -> Y where Y^2 = X mod R") | |
2265 | METH (quadsolve, "R.quadsolve(X) -> Y where Y^2 + Y = X mod R") | |
d7ab1bab | 2266 | METH (exp, "R.exp(X, N) -> X^N mod B.m") |
2267 | #undef METHNAME | |
2268 | { 0 } | |
2269 | }; | |
2270 | ||
2271 | static PyTypeObject *gfreduce_pytype, gfreduce_pytype_skel = { | |
6d4db0bf | 2272 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 2273 | "GFReduce", /* @tp_name@ */ |
d7ab1bab | 2274 | sizeof(gfreduce_pyobj), /* @tp_basicsize@ */ |
2275 | 0, /* @tp_itemsize@ */ | |
2276 | ||
2277 | gfreduce_pydealloc, /* @tp_dealloc@ */ | |
2278 | 0, /* @tp_print@ */ | |
2279 | 0, /* @tp_getattr@ */ | |
2280 | 0, /* @tp_setattr@ */ | |
2281 | 0, /* @tp_compare@ */ | |
2282 | 0, /* @tp_repr@ */ | |
2283 | 0, /* @tp_as_number@ */ | |
2284 | 0, /* @tp_as_sequence@ */ | |
2285 | 0, /* @tp_as_mapping@ */ | |
2286 | 0, /* @tp_hash@ */ | |
2287 | 0, /* @tp_call@ */ | |
2288 | 0, /* @tp_str@ */ | |
2289 | 0, /* @tp_getattro@ */ | |
2290 | 0, /* @tp_setattro@ */ | |
2291 | 0, /* @tp_as_buffer@ */ | |
2292 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
2293 | Py_TPFLAGS_BASETYPE, | |
2294 | ||
2295 | /* @tp_doc@ */ | |
2296 | "A reduction context for reduction modulo sparse irreducible polynomials.", | |
2297 | ||
2298 | 0, /* @tp_traverse@ */ | |
2299 | 0, /* @tp_clear@ */ | |
2300 | 0, /* @tp_richcompare@ */ | |
2301 | 0, /* @tp_weaklistoffset@ */ | |
2302 | 0, /* @tp_iter@ */ | |
963a6148 | 2303 | 0, /* @tp_iternext@ */ |
d7ab1bab | 2304 | gfreduce_pymethods, /* @tp_methods@ */ |
2305 | 0, /* @tp_members@ */ | |
2306 | gfreduce_pygetset, /* @tp_getset@ */ | |
2307 | 0, /* @tp_base@ */ | |
2308 | 0, /* @tp_dict@ */ | |
2309 | 0, /* @tp_descr_get@ */ | |
2310 | 0, /* @tp_descr_set@ */ | |
2311 | 0, /* @tp_dictoffset@ */ | |
2312 | 0, /* @tp_init@ */ | |
2313 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
2314 | gfreduce_pynew, /* @tp_new@ */ | |
3aa33042 | 2315 | 0, /* @tp_free@ */ |
d7ab1bab | 2316 | 0 /* @tp_is_gc@ */ |
2317 | }; | |
2318 | ||
2319 | /*----- Normal/poly transformation ----------------------------------------*/ | |
2320 | ||
2321 | typedef struct gfn_pyobj { | |
2322 | PyObject_HEAD | |
2323 | mp *p; | |
2324 | gfn ntop, pton; | |
2325 | } gfn_pyobj; | |
2326 | ||
2327 | static PyTypeObject *gfn_pytype, gfn_pytype_skel; | |
2328 | ||
2329 | #define GFN_P(o) (((gfn_pyobj *)(o))->p) | |
2330 | #define GFN_PTON(o) (&((gfn_pyobj *)(o))->pton) | |
2331 | #define GFN_NTOP(o) (&((gfn_pyobj *)(o))->ntop) | |
2332 | ||
2333 | static PyObject *gfn_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw) | |
2334 | { | |
2335 | mp *p = 0, *beta = 0; | |
2336 | gfn_pyobj *gg = 0; | |
2337 | char *kwlist[] = { "p", "beta", 0 }; | |
2338 | ||
2339 | if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", kwlist, | |
2340 | convgf, &p, convgf, &beta)) | |
2341 | goto end; | |
2342 | gg = PyObject_New(gfn_pyobj, ty); | |
2343 | if (gfn_create(p, beta, &gg->ntop, &gg->pton)) { | |
3aa33042 | 2344 | FREEOBJ(gg); |
d7ab1bab | 2345 | gg = 0; |
2346 | VALERR("can't invert transformation matrix"); | |
2347 | } | |
2348 | gg->p = MP_COPY(p); | |
2349 | end: | |
2350 | mp_drop(p); | |
2351 | mp_drop(beta); | |
2352 | return ((PyObject *)gg); | |
2353 | } | |
2354 | ||
2355 | static PyObject *gfnget_p(PyObject *me, void *hunoz) | |
2356 | { return (gf_pywrap(MP_COPY(GFN_P(me)))); } | |
2357 | ||
2358 | static PyObject *gfnget_beta(PyObject *me, void *hunoz) | |
2359 | { | |
2360 | gfn *n = GFN_NTOP(me); | |
2361 | mp *x = n->r[n->n - 1]; | |
2362 | return (gf_pywrap(MP_COPY(x))); | |
2363 | } | |
2364 | ||
2365 | #define XFORMOP(name, NAME) \ | |
2366 | static PyObject *gfnmeth_##name(PyObject *me, PyObject *arg) \ | |
2367 | { \ | |
2368 | mp *xx = 0; \ | |
2369 | mp *z = 0; \ | |
2370 | \ | |
2371 | if (!PyArg_ParseTuple(arg, "O&:" #name, convgf, &xx)) goto end; \ | |
2372 | z = gfn_transform(GFN_##NAME(me), MP_NEW, xx); \ | |
2373 | end: \ | |
2374 | mp_drop(xx); \ | |
2375 | if (!z) return (0); \ | |
2376 | return (mp_pywrap(z)); \ | |
2377 | } | |
2378 | XFORMOP(pton, PTON) | |
2379 | XFORMOP(ntop, NTOP) | |
2380 | #undef XFORMOP | |
2381 | ||
2382 | static void gfn_pydealloc(PyObject *me) | |
2383 | { | |
2384 | gfn_destroy(GFN_PTON(me)); | |
2385 | gfn_destroy(GFN_NTOP(me)); | |
3aa33042 | 2386 | FREEOBJ(me); |
d7ab1bab | 2387 | } |
2388 | ||
2389 | static PyGetSetDef gfn_pygetset[] = { | |
2390 | #define GETSETNAME(op, name) gfn##op##_##name | |
2391 | GET (p, "X.p -> polynomial basis, as polynomial") | |
2392 | GET (beta, "X.beta -> normal basis element, in poly form") | |
2393 | #undef GETSETNAME | |
2394 | { 0 } | |
2395 | }; | |
2396 | ||
2397 | static PyMethodDef gfn_pymethods[] = { | |
2398 | #define METHNAME(name) gfnmeth_##name | |
2399 | METH (pton, "X.pton(A) -> normal-basis representation of A") | |
2400 | METH (ntop, "X.ntop(A) -> polynomial-basis representation of A") | |
2401 | #undef METHNAME | |
2402 | { 0 } | |
2403 | }; | |
2404 | ||
2405 | static PyTypeObject gfn_pytype_skel = { | |
6d4db0bf | 2406 | PyObject_HEAD_INIT(0) 0, /* Header */ |
c461c9b3 | 2407 | "GFN", /* @tp_name@ */ |
d7ab1bab | 2408 | sizeof(gfn_pyobj), /* @tp_basicsize@ */ |
2409 | 0, /* @tp_itemsize@ */ | |
2410 | ||
2411 | gfn_pydealloc, /* @tp_dealloc@ */ | |
2412 | 0, /* @tp_print@ */ | |
2413 | 0, /* @tp_getattr@ */ | |
2414 | 0, /* @tp_setattr@ */ | |
2415 | 0, /* @tp_compare@ */ | |
2416 | 0, /* @tp_repr@ */ | |
2417 | 0, /* @tp_as_number@ */ | |
2418 | 0, /* @tp_as_sequence@ */ | |
2419 | 0, /* @tp_as_mapping@ */ | |
2420 | 0, /* @tp_hash@ */ | |
2421 | 0, /* @tp_call@ */ | |
2422 | 0, /* @tp_str@ */ | |
2423 | 0, /* @tp_getattro@ */ | |
2424 | 0, /* @tp_setattro@ */ | |
2425 | 0, /* @tp_as_buffer@ */ | |
2426 | Py_TPFLAGS_DEFAULT | /* @tp_flags@ */ | |
2427 | Py_TPFLAGS_BASETYPE, | |
2428 | ||
2429 | /* @tp_doc@ */ | |
2430 | "An object for transforming elements of binary fields between polynomial\n\ | |
2431 | and normal basis representations.", | |
2432 | ||
2433 | 0, /* @tp_traverse@ */ | |
2434 | 0, /* @tp_clear@ */ | |
2435 | 0, /* @tp_richcompare@ */ | |
2436 | 0, /* @tp_weaklistoffset@ */ | |
2437 | 0, /* @tp_iter@ */ | |
963a6148 | 2438 | 0, /* @tp_iternext@ */ |
d7ab1bab | 2439 | gfn_pymethods, /* @tp_methods@ */ |
2440 | 0, /* @tp_members@ */ | |
2441 | gfn_pygetset, /* @tp_getset@ */ | |
2442 | 0, /* @tp_base@ */ | |
2443 | 0, /* @tp_dict@ */ | |
2444 | 0, /* @tp_descr_get@ */ | |
2445 | 0, /* @tp_descr_set@ */ | |
2446 | 0, /* @tp_dictoffset@ */ | |
2447 | 0, /* @tp_init@ */ | |
2448 | PyType_GenericAlloc, /* @tp_alloc@ */ | |
2449 | gfn_pynew, /* @tp_new@ */ | |
3aa33042 | 2450 | 0, /* @tp_free@ */ |
d7ab1bab | 2451 | 0 /* @tp_is_gc@ */ |
2452 | }; | |
2453 | ||
2454 | /*----- Glue --------------------------------------------------------------*/ | |
2455 | ||
2456 | static PyMethodDef methods[] = { | |
2457 | #define METHNAME(func) meth_##func | |
b2687a0a | 2458 | KWMETH(_MP_fromstring, "\ |
d7ab1bab | 2459 | fromstring(STR, radix = 0) -> (X, REST)\n\ |
2460 | \n\ | |
2461 | Parse STR as a large integer, according to radix. If radix is zero,\n\ | |
2462 | read a prefix from STR to decide radix: allow `0' for octal, `0x' for hex\n\ | |
2463 | or `R_' for other radix R.") | |
b2687a0a | 2464 | KWMETH(_GF_fromstring, "\ |
d7ab1bab | 2465 | fromstring(STR, radix = 0) -> (X, REST)\n\ |
2466 | \n\ | |
2467 | Parse STR as a binary polynomial, according to radix. If radix is zero,\n\ | |
2468 | read a prefix from STR to decide radix: allow `0' for octal, `0x' for hex\n\ | |
2469 | or `R_' for other radix R.") | |
9f49c854 MW |
2470 | METH (_MP_factorial, "\ |
2471 | factorial(I) -> I!: compute factorial") | |
6313f40e MW |
2472 | METH (_MP_fibonacci, "\ |
2473 | fibonacci(I) -> F(I): compute Fibonacci number") | |
d7ab1bab | 2474 | METH (_MP_loadl, "\ |
2475 | loadl(STR) -> X: read little-endian bytes") | |
2476 | METH (_MP_loadb, "\ | |
2477 | loadb(STR) -> X: read big-endian bytes") | |
2478 | METH (_MP_loadl2c, "\ | |
2479 | loadl2c(STR) -> X: read little-endian bytes, two's complement") | |
2480 | METH (_MP_loadb2c, "\ | |
2481 | loadb2c(STR) -> X: read big-endian bytes, two's complement") | |
2482 | METH (_MP_frombuf, "\ | |
2483 | frombuf(STR) -> (X, REST): read buffer format") | |
d7ab1bab | 2484 | METH (_GF_loadl, "\ |
2485 | loadl(STR) -> X: read little-endian bytes") | |
2486 | METH (_GF_loadb, "\ | |
2487 | loadb(STR) -> X: read big-endian bytes") | |
2488 | METH (_GF_frombuf, "\ | |
2489 | frombuf(STR) -> (X, REST): read buffer format") | |
2490 | #undef METHNAME | |
2491 | { 0 } | |
2492 | }; | |
2493 | ||
2494 | void mp_pyinit(void) | |
2495 | { | |
2496 | INITTYPE(mp, root); | |
2497 | INITTYPE(gf, root); | |
32507e35 | 2498 | INITTYPE(mpmul, root); |
d7ab1bab | 2499 | INITTYPE(mpmont, root); |
2500 | INITTYPE(mpbarrett, root); | |
2501 | INITTYPE(mpreduce, root); | |
2502 | INITTYPE(mpcrt, root); | |
2503 | INITTYPE(gfreduce, root); | |
2504 | INITTYPE(gfn, root); | |
2505 | addmethods(methods); | |
2506 | } | |
2507 | ||
2508 | void mp_pyinsert(PyObject *mod) | |
2509 | { | |
2510 | INSERT("MP", mp_pytype); | |
32507e35 | 2511 | INSERT("MPMul", mpmul_pytype); |
d7ab1bab | 2512 | INSERT("MPMont", mpmont_pytype); |
2513 | INSERT("MPBarrett", mpbarrett_pytype); | |
2514 | INSERT("MPReduce", mpreduce_pytype); | |
2515 | INSERT("MPCRT", mpcrt_pytype); | |
2516 | INSERT("GF", gf_pytype); | |
2517 | INSERT("GFReduce", gfreduce_pytype); | |
2518 | INSERT("GFN", gfn_pytype); | |
2519 | } | |
2520 | ||
2521 | /*----- That's all, folks -------------------------------------------------*/ |