1 /* This file is part of the Sub::Nary Perl module.
2 * See http://search.cpan.org/dist/Sub::Nary/ */
4 #define PERL_NO_GET_CONTEXT
10 # define Newx(v, n, c) New(0, v, n, c)
14 # define mPUSHi(I) PUSHs(sv_2mortal(newSViv(I)))
22 STATIC void sn_store(pTHX_ HV *tb, const char *key, I32 klen, SV *val, U32 hash) {
23 #define sn_store(T, K, KL, V, H) sn_store(aTHX_ (T), (K), (KL), (V), (H))
24 if (!hv_store(tb, key, klen, val, hash)) SvREFCNT_dec(val);
27 STATIC void sn_store_ent(pTHX_ HV *tb, SV *key, SV *val, U32 hash) {
28 #define sn_store_ent(T, K, V, H) sn_store_ent(aTHX_ (T), (K), (V), (H))
29 if (!hv_store_ent(tb, key, val, hash)) SvREFCNT_dec(val);
32 STATIC U32 sn_hash_list = 0;
33 STATIC U32 sn_hash_exit = 0;
35 /* --- XS ------------------------------------------------------------------ */
37 MODULE = Sub::Nary PACKAGE = Sub::Nary
43 PERL_HASH(sn_hash_list, "list", 4);
44 PERL_HASH(sn_hash_exit, "exit", 4);
51 ST(0) = sv_2mortal(newSVuv(SvUV(SvRV(op))));
60 o = INT2PTR(OP *, SvUV(SvRV(op)));
61 ST(0) = sv_2mortal(newSVuv(o == NULL));
74 res = SvNOK(sv) ? SvNV(sv) == 0.0 : SvUV(sv) == 0;
78 res = hv_iterinit(hv) == 1 && hv_exists(hv, "0", 1);
95 while (key = hv_iternext(hv)) {
96 c += SvNV(HeVAL(key));
112 sn_store_ent(res, sv, newSVuv(1), 0);
114 hv = (HV *) SvRV(sv);
115 if (!hv_iterinit(hv)) {
116 sn_store(res, "0", 1, newSVuv(1), 0);
118 while (key = hv_iternext(hv))
119 c += SvNV(HeVAL(key));
121 while (key = hv_iternext(hv)) {
122 SV *val = newSVnv(SvNV(HeVAL(key)) / c);
123 sn_store_ent(res, HeSVKEY_force(key), val, HeHASH(key));
127 ST(0) = sv_2mortal(newRV_noinc((SV *) res));
131 scale(SV *csv, SV *sv)
144 sn_store_ent(res, sv, newSVnv(c), 0);
146 hv = (HV *) SvRV(sv);
147 if (!hv_iterinit(hv)) {
148 sn_store(res, "0", 1, newSVnv(c), 0);
151 while (key = hv_iternext(hv)) {
152 SV *val = newSVnv(SvNV(HeVAL(key)) * c);
153 sn_store_ent(res, HeSVKEY_force(key), val, HeHASH(key));
157 ST(0) = sv_2mortal(newRV_noinc((SV *) res));
172 for (i = 0; i < items; ++i) {
178 if ((old = hv_fetch_ent(res, cur, 1, 0)) && SvOK(val = HeVAL(old)))
180 sn_store_ent(res, cur, newSVnv(v), 0);
184 hv_iterinit((HV *) cur);
185 while (key = hv_iternext((HV *) cur)) {
186 SV *k = HeSVKEY_force(key);
187 NV v = SvNV(HeVAL(key));
188 if ((old = hv_fetch_ent(res, k, 1, 0)) && SvOK(val = HeVAL(old)))
190 sn_store_ent(res, k, newSVnv(v), 0);
193 if (!hv_iterinit(res)) {
197 ST(0) = sv_2mortal(newRV_noinc((SV *) res));
201 cumulate(SV *sv, SV *nsv, SV *csv)
214 ST(0) = sv_2mortal(newSVuv(0));
217 if (!SvROK(sv) || !c0) {
222 if (!hv_iterinit((HV *) sv))
224 if (c0 == 1 || (SvIOK(csv) && SvIV(csv) == 1)) {
229 for (; n > 0; n /= 2) {
234 c = (1 - c) / (1 - c0);
237 while (key = hv_iternext((HV *) sv)) {
238 SV *k = HeSVKEY_force(key);
239 SV *val = newSVnv(c * SvNV(HeVAL(key)));
240 sn_store_ent(res, k, val, 0);
242 ST(0) = sv_2mortal(newRV_noinc((SV *) res));
258 sn_combcache *cache = NULL;
266 Newx(cache, 1, sn_combcache);
268 temp = sv_2mortal(newSViv(0));
269 for (i = 0; i < items; ++i) {
279 sn_store_ent(res[2], cur, newSVuv(1), 0);
288 exit1 = hv_delete((HV *) cur, "exit", 4, 0);
289 n1 = hv_iterinit((HV *) cur);
299 list1 = hv_delete((HV *) cur, "list", 4, 0);
308 pl = pl1 * (1 - pe) + pl * (1 - pe1) - pl * pl1;
309 pe = pe + (1 - pe) * pe1;
310 n2 = hv_iterinit(res[n]);
317 Renew(cache, n2, sn_combcache);
321 while (key = hv_iternext(res[n])) {
322 cache[j].k = SvUV(HeSVKEY_force(key));
323 cache[j].v = SvNV(HeVAL(key));
327 while (key = hv_iternext((HV *) cur)) {
328 IV k = SvUV(HeSVKEY_force(key));
329 NV v = SvNV(HeVAL(key));
330 for (j = 0; j < n2; ++j) {
331 sv_setiv(temp, k + cache[j].k);
332 if ((old = hv_fetch_ent(res[o], temp, 1, 0)) && SvOK(val = HeVAL(old))) {
333 val = newSVnv(SvNV(val) + v * cache[j].v);
335 val = newSVnv(v * cache[j].v);
337 sn_store_ent(res[o], temp, val, 0);
343 SvREFCNT_dec(res[2]);
345 sn_store(res[n], "exit", 4, newSVnv(pe), sn_hash_exit);
347 sn_store(res[n], "list", 4, newSVnv(pl), sn_hash_list);
349 SvREFCNT_dec(res[0]);
351 SvREFCNT_dec(res[1]);
352 if (!hv_iterinit(res[n])) {
353 SvREFCNT_dec(res[n]);
356 ST(0) = sv_2mortal(newRV_noinc((SV *) res[n]));
368 if (cxt == G_SCALAR) {
369 for (i = 0; i < OP_max; ++i) {
370 count += (PL_opargs[i] & (OA_RETSCALAR | OA_RETINTEGER)) != 0;
375 } else if (cxt == G_ARRAY) {
376 for (i = 0; i < OP_max; ++i) {
377 if (PL_opargs[i] & (OA_RETSCALAR | OA_RETINTEGER)) {
378 const char *name = PL_op_name[i];
379 XPUSHs(sv_2mortal(newSVpvn_share(name, strlen(name), 0)));