5 * (c) 2004 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the Python interface to Catacomb.
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.
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.
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.
27 /*----- Header files ------------------------------------------------------*/
29 #include "catacomb-python.h"
31 /*----- Various utilities -------------------------------------------------*/
33 PyTypeObject *field_pytype;
34 PyTypeObject *primefield_pytype;
35 PyTypeObject *niceprimefield_pytype;
36 PyTypeObject *binfield_pytype;
37 PyTypeObject *binpolyfield_pytype;
38 PyTypeObject *binnormfield_pytype;
39 PyTypeObject *fe_pytype;
41 static PyObject *fe_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
45 static const char *const kwlist[] = { "x", 0 };
47 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O:fe", KWLIST, &x))
49 if (FE_PYCHECK(x) && FE_F(x) == FIELD_F(ty)) RETURN_OBJ(x);
50 if ((z = getmp(x)) == 0) return (0);
51 z = F_IN(FIELD_F(ty), z, z);
52 return (fe_pywrap((PyObject *)ty, z));
55 static PyObject *field_dopywrap(PyTypeObject *ty, field *f)
57 field_pyobj *fobj = newtype(ty, 0, f->ops->name);
59 fobj->ty.ht_type.tp_basicsize = sizeof(fe_pyobj);
60 fobj->ty.ht_type.tp_base = fe_pytype;
62 fobj->ty.ht_type.tp_flags = (Py_TPFLAGS_DEFAULT |
64 Py_TPFLAGS_CHECKTYPES |
66 fobj->ty.ht_type.tp_alloc = PyType_GenericAlloc;
67 fobj->ty.ht_type.tp_free = 0;
68 fobj->ty.ht_type.tp_new = fe_pynew;
69 typeready(&fobj->ty.ht_type);
70 return ((PyObject *)fobj);
73 PyObject *field_pywrap(field *f)
77 if (strcmp(F_NAME(f), "prime") == 0) ty = primefield_pytype;
78 else if (strcmp(F_NAME(f), "niceprime") == 0) ty = niceprimefield_pytype;
79 else if (strcmp(F_NAME(f), "binpoly") == 0) ty = binpolyfield_pytype;
80 else if (strcmp(F_NAME(f), "binnorm") == 0) ty = binnormfield_pytype;
82 return (field_dopywrap(ty, f));
85 field *field_copy(field *f)
87 if (strcmp(F_NAME(f), "prime") == 0)
88 f = field_prime(f->m);
89 else if (strcmp(F_NAME(f), "niceprime") == 0)
90 f = field_niceprime(f->m);
91 else if (strcmp(F_NAME(f), "binpoly") == 0)
92 f = field_binpoly(f->m);
93 else if (strcmp(F_NAME(f), "binnorm") == 0) {
94 fctx_binnorm *fc = (fctx_binnorm *)f;
95 f = field_binnorm(f->m, fc->ntop.r[fc->ntop.n - 1]);
101 PyObject *fe_pywrap(PyObject *fobj, mp *x)
103 fe_pyobj *z = PyObject_New(fe_pyobj, (PyTypeObject *)fobj);
104 z->f = FIELD_F(fobj);
107 return ((PyObject *)z);
110 static mp *tofe(field *f, PyObject *o)
115 if (FE_F(o) != f && !field_samep(FE_F(o), f)) return (0);
116 y = MP_COPY(FE_X(o));
117 } else if ((x = tomp(o)) != 0) {
119 y = MP_COPY(f->zero);
120 else if (MP_EQ(x, MP_ONE))
123 y = F_IN(f, MP_NEW, x);
129 /*----- Field elements ----------------------------------------------------*/
131 static int febinop(PyObject *x, PyObject *y,
132 field **f, PyObject **fobj, mp **xx, mp **yy)
134 if (FE_PYCHECK(x)) *fobj = FE_FOBJ(x);
135 else if (FE_PYCHECK(y)) *fobj = FE_FOBJ(y);
138 if ((*xx = tofe(*f, x)) == 0)
140 if ((*yy = tofe(*f, y)) == 0) {
147 #define BINOP(name) \
148 static PyObject *fe_py##name(PyObject *x, PyObject *y) { \
152 if (febinop(x, y, &ff, &fobj, &xx, &yy)) RETURN_NOTIMPL; \
153 zz = ff->ops->name(ff, MP_NEW, xx, yy); \
154 MP_DROP(xx); MP_DROP(yy); \
155 return (fe_pywrap(fobj, zz)); \
162 static PyObject *fe_pydiv(PyObject *x, PyObject *y)
168 if (febinop(x, y, &ff, &fobj, &xx, &yy)) RETURN_NOTIMPL;
169 if (F_ZEROP(ff, yy)) ZDIVERR("division by zero");
170 yy = F_INV(ff, yy, yy);
171 z = fe_pywrap(fobj, F_MUL(ff, MP_NEW, xx, yy));
173 MP_DROP(xx); MP_DROP(yy);
177 static PyObject *fe_pyexp(PyObject *x, PyObject *y, PyObject *z)
182 if (z != Py_None || !FE_PYCHECK(x) || (yy = tomp(y)) == 0)
184 ff = FE_F(x); xx = FE_X(x); MP_COPY(xx);
185 if (MP_NEGP(yy) && F_ZEROP(ff, xx)) ZDIVERR("division by zero");
186 z = fe_pywrap(FE_FOBJ(x), field_exp(ff, MP_NEW, xx, yy));
188 MP_DROP(xx); MP_DROP(yy);
192 static PyObject *fe_pyneg(PyObject *x)
194 return fe_pywrap(FE_FOBJ(x), FE_F(x)->ops->neg(FE_F(x), MP_NEW, FE_X(x)));
197 static PyObject *fe_pyid(PyObject *x) { RETURN_OBJ(x); }
199 static int fe_pynonzerop(PyObject *x) { return !F_ZEROP(FE_F(x), FE_X(x)); }
201 static PyObject *fe_pyrichcompare(PyObject *x, PyObject *y, int op)
209 if (febinop(x, y, &ff, &fobj, &xx, &yy)) RETURN_NOTIMPL;
211 case Py_EQ: b = MP_EQ(xx, yy); break;
212 case Py_NE: b = !MP_EQ(xx, yy); break;
213 default: TYERR("field elements are unordered");
217 MP_DROP(xx); MP_DROP(yy);
221 static long fe_pyhash(PyObject *me)
222 { return (mphash(FE_X(me))); }
224 static int fe_pycoerce(PyObject **x, PyObject **y)
228 if (FE_PYCHECK(*y)) {
229 if (FE_F(*x) != FE_F(*y) && !field_samep(FE_F(*x), FE_F(*y)))
230 TYERR("field mismatch");
231 Py_INCREF(*x); Py_INCREF(*y);
234 if ((z = tofe(FE_F(*x), *y)) != 0) {
236 *y = fe_pywrap(FE_FOBJ(*x), z);
245 static PyObject *fe_pyint(PyObject *x)
249 mp *xx = F_OUT(FE_F(x), MP_NEW, FE_X(x));
250 if (!mp_tolong_checked(xx, &l, 0)) rc = PyInt_FromLong(l);
251 else rc = mp_topylong(xx);
256 static PyObject *fe_pylong(PyObject *x)
258 mp *xx = F_OUT(FE_F(x), MP_NEW, FE_X(x));
259 PyObject *rc = mp_topylong(xx);
264 #define BASEOP(name, radix, pre) \
265 static PyObject *fe_py##name(PyObject *x) { \
266 mp *xx = F_OUT(FE_F(x), MP_NEW, FE_X(x)); \
267 PyObject *rc = mp_topystring(xx, radix, 0, pre, 0); \
272 BASEOP(hex, 16, "0x");
275 static void fe_pydealloc(PyObject *me)
277 Py_DECREF(FE_FOBJ(me));
282 #define UNOP(name, check) \
283 static PyObject *femeth_##name(PyObject *me, PyObject *arg) { \
284 field *f = FE_F(me); \
286 if (!PyArg_ParseTuple(arg, ":" #name)) return (0); \
287 if (!f->ops->name) TYERR(#name " not supported for this field"); \
289 x = f->ops->name(f, MP_NEW, x); \
290 if (!x) RETURN_NONE; \
291 return (fe_pywrap(FE_FOBJ(me), x)); \
295 UNOP(inv, if (F_ZEROP(f, x)) ZDIVERR("division by zero"); )
305 static PyObject *feget_field(PyObject *me, void *hunoz)
306 { RETURN_OBJ(FE_FOBJ(me)); }
308 static PyObject *feget_value(PyObject *me, void *hunoz)
310 mp *x = F_OUT(FE_F(me), MP_NEW, FE_X(me));
311 if (F_TYPE(FE_F(me)) == FTY_BINARY)
312 return (gf_pywrap(x));
314 return (mp_pywrap(x));
317 static PyObject *feget__value(PyObject *me, void *hunoz)
321 if (F_TYPE(FE_F(me)) == FTY_BINARY)
322 return (gf_pywrap(x));
324 return (mp_pywrap(x));
327 static PyGetSetDef fe_pygetset[] = {
328 #define GETSETNAME(op, name) fe##op##_##name
329 GET (field, "X.field -> field containing X")
330 GET (value, "X.value -> `natural' MP/GF representation of X")
331 GET (_value, "X._value -> internal MP/GF representation of X")
336 static PyMethodDef fe_pymethods[] = {
337 #define METHNAME(func) femeth_##func
338 METH (inv, "X.inv() -> X^{-1}")
339 METH (sqr, "X.sqr() -> X^2")
340 METH (sqrt, "X.sqrt() -> sqrt(X)")
341 METH (quadsolve, "X.quadsolve() -> Y where Y^2 + Y = X (binary only)")
342 METH (dbl, "X.dbl() -> 2 * X (prime only)")
343 METH (tpl, "X.tpl() -> 3 * X (prime only)")
344 METH (qdl, "X.qdl() -> 4 * X (prime only)")
345 METH (hlv, "X.hlv() -> X/2 (prime only)")
350 static PyNumberMethods fe_pynumber = {
351 fe_pyadd, /* @nb_add@ */
352 fe_pysub, /* @nb_subtract@ */
353 fe_pymul, /* @nb_multiply@ */
354 fe_pydiv, /* @nb_divide@ */
355 0, /* @nb_remainder@ */
357 fe_pyexp, /* @nb_power@ */
358 fe_pyneg, /* @nb_negative@ */
359 fe_pyid, /* @nb_positive@ */
360 0, /* @nb_absolute@ */
361 fe_pynonzerop, /* @nb_nonzero@ */
368 fe_pycoerce, /* @nb_coerce@ */
369 fe_pyint, /* @nb_int@ */
370 fe_pylong, /* @nb_long@ */
371 0 /* meaningless */, /* @nb_float@ */
372 fe_pyoct, /* @nb_oct@ */
373 fe_pyhex, /* @nb_hex@ */
375 0, /* @nb_inplace_add@ */
376 0, /* @nb_inplace_subtract@ */
377 0, /* @nb_inplace_multiply@ */
378 0, /* @nb_inplace_divide@ */
379 0, /* @nb_inplace_remainder@ */
380 0, /* @nb_inplace_power@ */
381 0, /* @nb_inplace_lshift@ */
382 0, /* @nb_inplace_rshift@ */
383 0, /* @nb_inplace_and@ */
384 0, /* @nb_inplace_xor@ */
385 0, /* @nb_inplace_or@ */
387 0, /* @nb_floor_divide@ */
388 fe_pydiv, /* @nb_true_divide@ */
389 0, /* @nb_inplace_floor_divide@ */
390 0, /* @nb_inplace_true_divide@ */
393 static PyTypeObject fe_pytype_skel = {
394 PyObject_HEAD_INIT(0) 0, /* Header */
395 "FE", /* @tp_name@ */
396 sizeof(fe_pyobj), /* @tp_basicsize@ */
397 0, /* @tp_itemsize@ */
399 fe_pydealloc, /* @tp_dealloc@ */
401 0, /* @tp_getattr@ */
402 0, /* @tp_setattr@ */
403 0, /* @tp_compare@ */
405 &fe_pynumber, /* @tp_as_number@ */
406 0, /* @tp_as_sequence@ */
407 0, /* @tp_as_mapping@ */
408 fe_pyhash, /* @tp_hash@ */
410 fe_pyhex, /* @tp_str@ */
411 0, /* @tp_getattro@ */
412 0, /* @tp_setattro@ */
413 0, /* @tp_as_buffer@ */
414 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
415 Py_TPFLAGS_CHECKTYPES |
419 "Finite field elements, abstract base class.",
421 0, /* @tp_traverse@ */
423 fe_pyrichcompare, /* @tp_richcompare@ */
424 0, /* @tp_weaklistoffset@ */
426 0, /* @tp_iternext@ */
427 fe_pymethods, /* @tp_methods@ */
428 0, /* @tp_members@ */
429 fe_pygetset, /* @tp_getset@ */
432 0, /* @tp_descr_get@ */
433 0, /* @tp_descr_set@ */
434 0, /* @tp_dictoffset@ */
436 PyType_GenericAlloc, /* @tp_alloc@ */
437 abstract_pynew, /* @tp_new@ */
442 /*----- Fields ------------------------------------------------------------*/
444 static PyObject *field_pyrichcompare(PyObject *x, PyObject *y, int op)
446 int b = field_samep(FIELD_F(x), FIELD_F(y));
450 default: TYERR("can't order fields");
457 static PyObject *fmeth_rand(PyObject *me, PyObject *arg, PyObject *kw)
459 static const char *const kwlist[] = { "rng", 0 };
460 grand *r = &rand_global;
462 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O&:rand", KWLIST,
465 return (fe_pywrap(me, F_RAND(FIELD_F(me), MP_NEW, r)));
468 static PyObject *fmeth__adopt(PyObject *me, PyObject *arg)
471 if (!PyArg_ParseTuple(arg, "O&:_adopt", convmp, &xx)) return (0);
472 return (fe_pywrap(me, xx));
475 static void field_pydealloc(PyObject *me)
477 F_DESTROY(FIELD_F(me));
478 PyType_Type.tp_dealloc(me);
481 static PyObject *fget_zero(PyObject *me, void *hunoz)
482 { return (fe_pywrap(me, MP_COPY(FIELD_F(me)->zero))); }
484 static PyObject *fget_one(PyObject *me, void *hunoz)
485 { return (fe_pywrap(me, MP_COPY(FIELD_F(me)->one))); }
487 static PyObject *fget_q(PyObject *me, void *hunoz)
488 { return (mp_pywrap(MP_COPY(FIELD_F(me)->q))); }
490 static PyObject *fget_nbits(PyObject *me, void *hunoz)
491 { return (PyInt_FromLong(FIELD_F(me)->nbits)); }
493 static PyObject *fget_noctets(PyObject *me, void *hunoz)
494 { return (PyInt_FromLong(FIELD_F(me)->noctets)); }
496 static PyObject *fget_name(PyObject *me, void *hunoz)
497 { return (PyString_FromString(F_NAME(FIELD_F(me)))); }
499 static PyObject *fget_type(PyObject *me, void *hunoz)
500 { return (PyInt_FromLong(F_TYPE(FIELD_F(me)))); }
502 static PyGetSetDef field_pygetset[] = {
503 #define GETSETNAME(op, name) f##op##_##name
504 GET (zero, "F.zero -> field additive identity")
505 GET (one, "F.one -> field multiplicative identity")
506 GET (q, "F.q -> number of elements in field")
507 GET (nbits, "F.nbits -> bits needed to represent element")
508 GET (noctets, "F.noctets -> octetss needed to represent element")
509 GET (name, "F.name -> name of this kind of field")
510 GET (type, "F.type -> type code of this kind of field")
515 static PyMethodDef field_pymethods[] = {
516 #define METHNAME(name) fmeth_##name
517 METH (_adopt, "F._adopt(X) -> FE")
518 KWMETH(rand, "F.rand([rng = rand]) -> FE, uniformly distributed")
523 static PyTypeObject field_pytype_skel = {
524 PyObject_HEAD_INIT(0) 0, /* Header */
525 "Field", /* @tp_name@ */
526 sizeof(field_pyobj), /* @tp_basicsize@ */
527 0, /* @tp_itemsize@ */
529 field_pydealloc, /* @tp_dealloc@ */
531 0, /* @tp_getattr@ */
532 0, /* @tp_setattr@ */
533 0, /* @tp_compare@ */
535 0, /* @tp_as_number@ */
536 0, /* @tp_as_sequence@ */
537 0, /* @tp_as_mapping@ */
541 0, /* @tp_getattro@ */
542 0, /* @tp_setattro@ */
543 0, /* @tp_as_buffer@ */
544 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
548 "An abstract field. This is an abstract type.",
550 0, /* @tp_traverse@ */
552 field_pyrichcompare, /* @tp_richcompare@ */
553 0, /* @tp_weaklistoffset@ */
555 0, /* @tp_iternext@ */
556 field_pymethods, /* @tp_methods@ */
557 0, /* @tp_members@ */
558 field_pygetset, /* @tp_getset@ */
561 0, /* @tp_descr_get@ */
562 0, /* @tp_descr_set@ */
563 0, /* @tp_dictoffset@ */
565 PyType_GenericAlloc, /* @tp_alloc@ */
566 abstract_pynew, /* @tp_new@ */
571 /*----- Prime fields ------------------------------------------------------*/
573 static PyObject *primefield_pynew(PyTypeObject *ty,
574 PyObject *arg, PyObject *kw)
578 static const char *const kwlist[] = { "p", 0 };
580 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:primefield", KWLIST,
583 if ((f = field_prime(xx)) == 0)
584 VALERR("bad prime for primefield");
586 return (field_dopywrap(ty, f));
592 static PyObject *pfget_p(PyObject *me, void *hunoz)
593 { return (mp_pywrap(MP_COPY(FIELD_F(me)->m))); }
595 static PyGetSetDef primefield_pygetset[] = {
596 #define GETSETNAME(op, name) pf##op##_##name
597 GET (p, "F.p -> prime field characteristic")
601 static PyTypeObject primefield_pytype_skel = {
602 PyObject_HEAD_INIT(0) 0, /* Header */
603 "PrimeField", /* @tp_name@ */
604 sizeof(field_pyobj), /* @tp_basicsize@ */
605 0, /* @tp_itemsize@ */
607 field_pydealloc, /* @tp_dealloc@ */
609 0, /* @tp_getattr@ */
610 0, /* @tp_setattr@ */
611 0, /* @tp_compare@ */
613 0, /* @tp_as_number@ */
614 0, /* @tp_as_sequence@ */
615 0, /* @tp_as_mapping@ */
619 0, /* @tp_getattro@ */
620 0, /* @tp_setattro@ */
621 0, /* @tp_as_buffer@ */
622 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
626 "PrimeField(P): prime fields.",
628 0, /* @tp_traverse@ */
630 field_pyrichcompare, /* @tp_richcompare@ */
631 0, /* @tp_weaklistoffset@ */
633 0, /* @tp_iternext@ */
634 0, /* @tp_methods@ */
635 0, /* @tp_members@ */
636 primefield_pygetset, /* @tp_getset@ */
639 0, /* @tp_descr_get@ */
640 0, /* @tp_descr_set@ */
641 0, /* @tp_dictoffset@ */
643 PyType_GenericAlloc, /* @tp_alloc@ */
644 primefield_pynew, /* @tp_new@ */
649 static PyObject *niceprimefield_pynew(PyTypeObject *ty,
650 PyObject *arg, PyObject *kw)
654 static const char *const kwlist[] = { "p", 0 };
656 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:niceprimefield",
657 KWLIST, convmp, &xx))
659 if ((f = field_niceprime(xx)) == 0)
660 VALERR("bad prime for niceprimefield");
662 return (field_dopywrap(ty, f));
668 static PyTypeObject niceprimefield_pytype_skel = {
669 PyObject_HEAD_INIT(0) 0, /* Header */
670 "NicePrimeField", /* @tp_name@ */
671 sizeof(field_pyobj), /* @tp_basicsize@ */
672 0, /* @tp_itemsize@ */
674 field_pydealloc, /* @tp_dealloc@ */
676 0, /* @tp_getattr@ */
677 0, /* @tp_setattr@ */
678 0, /* @tp_compare@ */
680 0, /* @tp_as_number@ */
681 0, /* @tp_as_sequence@ */
682 0, /* @tp_as_mapping@ */
686 0, /* @tp_getattro@ */
687 0, /* @tp_setattro@ */
688 0, /* @tp_as_buffer@ */
689 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
693 "NicePrimeField(P): prime field using Solinas reduction.",
695 0, /* @tp_traverse@ */
697 field_pyrichcompare, /* @tp_richcompare@ */
698 0, /* @tp_weaklistoffset@ */
700 0, /* @tp_iternext@ */
701 0, /* @tp_methods@ */
702 0, /* @tp_members@ */
706 0, /* @tp_descr_get@ */
707 0, /* @tp_descr_set@ */
708 0, /* @tp_dictoffset@ */
710 PyType_GenericAlloc, /* @tp_alloc@ */
711 niceprimefield_pynew, /* @tp_new@ */
716 /*----- Binary fields -----------------------------------------------------*/
718 static PyObject *bfget_m(PyObject *me, void *hunoz)
719 { return (PyInt_FromLong(FIELD_F(me)->nbits)); }
721 static PyGetSetDef binfield_pygetset[] = {
722 #define GETSETNAME(op, name) bf##op##_##name
723 GET (m, "F.m -> field polynomial degree")
728 static PyTypeObject binfield_pytype_skel = {
729 PyObject_HEAD_INIT(0) 0, /* Header */
730 "BinField", /* @tp_name@ */
731 sizeof(field_pyobj), /* @tp_basicsize@ */
732 0, /* @tp_itemsize@ */
734 field_pydealloc, /* @tp_dealloc@ */
736 0, /* @tp_getattr@ */
737 0, /* @tp_setattr@ */
738 0, /* @tp_compare@ */
740 0, /* @tp_as_number@ */
741 0, /* @tp_as_sequence@ */
742 0, /* @tp_as_mapping@ */
746 0, /* @tp_getattro@ */
747 0, /* @tp_setattro@ */
748 0, /* @tp_as_buffer@ */
749 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
753 "Binary fields. Abstract class.",
755 0, /* @tp_traverse@ */
757 field_pyrichcompare, /* @tp_richcompare@ */
758 0, /* @tp_weaklistoffset@ */
760 0, /* @tp_iternext@ */
761 0, /* @tp_methods@ */
762 0, /* @tp_members@ */
763 binfield_pygetset, /* @tp_getset@ */
766 0, /* @tp_descr_get@ */
767 0, /* @tp_descr_set@ */
768 0, /* @tp_dictoffset@ */
770 PyType_GenericAlloc, /* @tp_alloc@ */
771 abstract_pynew, /* @tp_new@ */
776 static PyObject *binpolyfield_pynew(PyTypeObject *ty,
777 PyObject *arg, PyObject *kw)
781 static const char *const kwlist[] = { "p", 0 };
783 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&:binpolyfield", KWLIST,
786 if ((f = field_binpoly(xx)) == 0) VALERR("bad poly for binpolyfield");
788 return (field_dopywrap(ty, f));
794 static PyObject *bfget_p(PyObject *me, void *hunoz)
795 { return (gf_pywrap(MP_COPY(FIELD_F(me)->m))); }
797 static PyGetSetDef binpolyfield_pygetset[] = {
798 #define GETSETNAME(op, name) bf##op##_##name
799 GET (p, "F.p -> field polynomial")
804 static PyTypeObject binpolyfield_pytype_skel = {
805 PyObject_HEAD_INIT(0) 0, /* Header */
806 "BinPolyField", /* @tp_name@ */
807 sizeof(field_pyobj), /* @tp_basicsize@ */
808 0, /* @tp_itemsize@ */
810 field_pydealloc, /* @tp_dealloc@ */
812 0, /* @tp_getattr@ */
813 0, /* @tp_setattr@ */
814 0, /* @tp_compare@ */
816 0, /* @tp_as_number@ */
817 0, /* @tp_as_sequence@ */
818 0, /* @tp_as_mapping@ */
822 0, /* @tp_getattro@ */
823 0, /* @tp_setattro@ */
824 0, /* @tp_as_buffer@ */
825 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
829 "BinPolyField(P): binary fields with polynomial basis representation.",
831 0, /* @tp_traverse@ */
833 field_pyrichcompare, /* @tp_richcompare@ */
834 0, /* @tp_weaklistoffset@ */
836 0, /* @tp_iternext@ */
837 0, /* @tp_methods@ */
838 0, /* @tp_members@ */
839 binpolyfield_pygetset, /* @tp_getset@ */
842 0, /* @tp_descr_get@ */
843 0, /* @tp_descr_set@ */
844 0, /* @tp_dictoffset@ */
846 PyType_GenericAlloc, /* @tp_alloc@ */
847 binpolyfield_pynew, /* @tp_new@ */
852 static PyObject *binnormfield_pynew(PyTypeObject *ty,
853 PyObject *arg, PyObject *kw)
857 static const char *const kwlist[] = { "p", "beta", 0 };
859 if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:binnormfield",
860 KWLIST, convgf, &xx, convgf, &yy))
862 if ((f = field_binnorm(xx, yy)) == 0) VALERR("bad args for binnormfield");
863 MP_DROP(xx); MP_DROP(yy);
864 return (field_dopywrap(ty, f));
866 mp_drop(xx); mp_drop(yy);
870 static PyObject *bnfget_beta(PyObject *me, void *hunoz)
872 fctx_binnorm *fc = (fctx_binnorm *)FIELD_F(me);
873 return (gf_pywrap(MP_COPY(fc->ntop.r[fc->ntop.n - 1])));
876 static PyGetSetDef binnormfield_pygetset[] = {
877 #define GETSETNAME(op, name) bf##op##_##name
878 GET (p, "F.p -> field polynomial")
880 #define GETSETNAME(op, name) bnf##op##_##name
881 GET (beta, "F.beta -> conversion factor")
886 static PyTypeObject binnormfield_pytype_skel = {
887 PyObject_HEAD_INIT(0) 0, /* Header */
888 "BinNormField", /* @tp_name@ */
889 sizeof(field_pyobj), /* @tp_basicsize@ */
890 0, /* @tp_itemsize@ */
892 field_pydealloc, /* @tp_dealloc@ */
894 0, /* @tp_getattr@ */
895 0, /* @tp_setattr@ */
896 0, /* @tp_compare@ */
898 0, /* @tp_as_number@ */
899 0, /* @tp_as_sequence@ */
900 0, /* @tp_as_mapping@ */
904 0, /* @tp_getattro@ */
905 0, /* @tp_setattro@ */
906 0, /* @tp_as_buffer@ */
907 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
911 "BinNormField(P, BETA): binary fields with normal basis representation.",
913 0, /* @tp_traverse@ */
915 field_pyrichcompare, /* @tp_richcompare@ */
916 0, /* @tp_weaklistoffset@ */
918 0, /* @tp_iternext@ */
919 0, /* @tp_methods@ */
920 0, /* @tp_members@ */
921 binnormfield_pygetset, /* @tp_getset@ */
924 0, /* @tp_descr_get@ */
925 0, /* @tp_descr_set@ */
926 0, /* @tp_dictoffset@ */
928 PyType_GenericAlloc, /* @tp_alloc@ */
929 binnormfield_pynew, /* @tp_new@ */
934 /*----- Setup -------------------------------------------------------------*/
936 static PyObject *meth__Field_parse(PyObject *me, PyObject *arg)
943 if (!PyArg_ParseTuple(arg, "Os:parse", &me, &p))
947 if ((f = field_parse(&qd)) == 0)
949 rc = Py_BuildValue("(Ns)", field_pywrap(f), qd.p);
954 static PyMethodDef methods[] = {
955 #define METHNAME(func) meth_##func
956 METH (_Field_parse, "parse(STR) -> F, REST")
961 void field_pyinit(void)
964 INITTYPE(field, type);
965 INITTYPE(primefield, field);
966 INITTYPE(niceprimefield, primefield);
967 INITTYPE(binfield, field);
968 INITTYPE(binpolyfield, binfield);
969 INITTYPE(binnormfield, binfield);
973 void field_pyinsert(PyObject *mod)
975 INSERT("FE", fe_pytype);
976 INSERT("Field", field_pytype);
977 INSERT("PrimeField", primefield_pytype);
978 INSERT("NicePrimeField", niceprimefield_pytype);
979 INSERT("BinField", binfield_pytype);
980 INSERT("BinPolyField", binpolyfield_pytype);
981 INSERT("BinNormField", binnormfield_pytype);
984 /*----- That's all, folks -------------------------------------------------*/