This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
use a more sensible homepage value for XSLoader
[perl5.git] / pp.c
CommitLineData
a0d0e21e 1/* pp.c
79072805 2 *
1129b882
NC
3 * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
79072805 5 *
a0d0e21e
LW
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
79072805 8 *
a0d0e21e
LW
9 */
10
11/*
4ac71550
TC
12 * 'It's a big house this, and very peculiar. Always a bit more
13 * to discover, and no knowing what you'll find round a corner.
14 * And Elves, sir!' --Samwise Gamgee
15 *
16 * [p.225 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 17 */
79072805 18
166f8a29
DM
19/* This file contains general pp ("push/pop") functions that execute the
20 * opcodes that make up a perl program. A typical pp function expects to
21 * find its arguments on the stack, and usually pushes its results onto
22 * the stack, hence the 'pp' terminology. Each OP structure contains
23 * a pointer to the relevant pp_foo() function.
24 */
25
79072805 26#include "EXTERN.h"
864dbfa3 27#define PERL_IN_PP_C
79072805 28#include "perl.h"
77bc9082 29#include "keywords.h"
79072805 30
a4af207c 31#include "reentr.h"
685289b5 32#include "regcharclass.h"
a4af207c 33
dfe9444c
AD
34/* XXX I can't imagine anyone who doesn't have this actually _needs_
35 it, since pid_t is an integral type.
36 --AD 2/20/1998
37*/
38#ifdef NEED_GETPID_PROTO
39extern Pid_t getpid (void);
8ac85365
NIS
40#endif
41
0630166f
SP
42/*
43 * Some BSDs and Cygwin default to POSIX math instead of IEEE.
44 * This switches them over to IEEE.
45 */
46#if defined(LIBM_LIB_VERSION)
47 _LIB_VERSION_TYPE _LIB_VERSION = _IEEE_;
48#endif
49
a78bc3c6
KW
50static const STRLEN small_mu_len = sizeof(GREEK_SMALL_LETTER_MU_UTF8) - 1;
51static const STRLEN capital_iota_len = sizeof(GREEK_CAPITAL_LETTER_IOTA_UTF8) - 1;
52
13017935
SM
53/* variations on pp_null */
54
93a17b20
LW
55PP(pp_stub)
56{
39644a26 57 dSP;
54310121 58 if (GIMME_V == G_SCALAR)
3280af22 59 XPUSHs(&PL_sv_undef);
93a17b20
LW
60 RETURN;
61}
62
79072805
LW
63/* Pushy stuff. */
64
bdaf10a5 65/* This is also called directly by pp_lvavref. */
93a17b20
LW
66PP(pp_padav)
67{
20b7effb 68 dSP; dTARGET;
13017935 69 I32 gimme;
e190e9b4 70 assert(SvTYPE(TARG) == SVt_PVAV);
3dbcc5e0
SM
71 if (UNLIKELY( PL_op->op_private & OPpLVAL_INTRO ))
72 if (LIKELY( !(PL_op->op_private & OPpPAD_STATE) ))
a5911867 73 SAVECLEARSV(PAD_SVl(PL_op->op_targ));
85e6fe83 74 EXTEND(SP, 1);
533c011a 75 if (PL_op->op_flags & OPf_REF) {
85e6fe83 76 PUSHs(TARG);
93a17b20 77 RETURN;
40c94d11
FC
78 } else if (PL_op->op_private & OPpMAYBE_LVSUB) {
79 const I32 flags = is_lvalue_sub();
80 if (flags && !(flags & OPpENTERSUB_INARGS)) {
82334630 81 if (GIMME_V == G_SCALAR)
a84828f3 82 /* diag_listed_as: Can't return %s to lvalue scalar context */
78f9721b
SM
83 Perl_croak(aTHX_ "Can't return array to lvalue scalar context");
84 PUSHs(TARG);
85 RETURN;
40c94d11 86 }
85e6fe83 87 }
13017935
SM
88 gimme = GIMME_V;
89 if (gimme == G_ARRAY) {
d5524600 90 /* XXX see also S_pushav in pp_hot.c */
c70927a6 91 const Size_t maxarg = AvFILL(MUTABLE_AV(TARG)) + 1;
85e6fe83 92 EXTEND(SP, maxarg);
93965878 93 if (SvMAGICAL(TARG)) {
c70927a6
FC
94 Size_t i;
95 for (i=0; i < maxarg; i++) {
502c6561 96 SV * const * const svp = av_fetch(MUTABLE_AV(TARG), i, FALSE);
3280af22 97 SP[i+1] = (svp) ? *svp : &PL_sv_undef;
93965878
NIS
98 }
99 }
100 else {
428ccf1e
FC
101 PADOFFSET i;
102 for (i=0; i < (PADOFFSET)maxarg; i++) {
103 SV * const sv = AvARRAY((const AV *)TARG)[i];
104 SP[i+1] = sv ? sv : &PL_sv_undef;
105 }
93965878 106 }
85e6fe83
LW
107 SP += maxarg;
108 }
13017935 109 else if (gimme == G_SCALAR) {
1b6737cc 110 SV* const sv = sv_newmortal();
c70927a6 111 const SSize_t maxarg = AvFILL(MUTABLE_AV(TARG)) + 1;
85e6fe83
LW
112 sv_setiv(sv, maxarg);
113 PUSHs(sv);
114 }
115 RETURN;
93a17b20
LW
116}
117
118PP(pp_padhv)
119{
20b7effb 120 dSP; dTARGET;
54310121
PP
121 I32 gimme;
122
e190e9b4 123 assert(SvTYPE(TARG) == SVt_PVHV);
93a17b20 124 XPUSHs(TARG);
3dbcc5e0
SM
125 if (UNLIKELY( PL_op->op_private & OPpLVAL_INTRO ))
126 if (LIKELY( !(PL_op->op_private & OPpPAD_STATE) ))
a5911867 127 SAVECLEARSV(PAD_SVl(PL_op->op_targ));
533c011a 128 if (PL_op->op_flags & OPf_REF)
93a17b20 129 RETURN;
40c94d11
FC
130 else if (PL_op->op_private & OPpMAYBE_LVSUB) {
131 const I32 flags = is_lvalue_sub();
132 if (flags && !(flags & OPpENTERSUB_INARGS)) {
82334630 133 if (GIMME_V == G_SCALAR)
a84828f3 134 /* diag_listed_as: Can't return %s to lvalue scalar context */
78f9721b
SM
135 Perl_croak(aTHX_ "Can't return hash to lvalue scalar context");
136 RETURN;
40c94d11 137 }
78f9721b 138 }
54310121
PP
139 gimme = GIMME_V;
140 if (gimme == G_ARRAY) {
981b7185 141 RETURNOP(Perl_do_kv(aTHX));
85e6fe83 142 }
c8fe3bdf 143 else if ((PL_op->op_private & OPpTRUEBOOL
adc42c31 144 || ( PL_op->op_private & OPpMAYBE_TRUEBOOL
c8fe3bdf
FC
145 && block_gimme() == G_VOID ))
146 && (!SvRMAGICAL(TARG) || !mg_find(TARG, PERL_MAGIC_tied)))
147 SETs(HvUSEDKEYS(TARG) ? &PL_sv_yes : sv_2mortal(newSViv(0)));
54310121 148 else if (gimme == G_SCALAR) {
85fbaab2 149 SV* const sv = Perl_hv_scalar(aTHX_ MUTABLE_HV(TARG));
85e6fe83 150 SETs(sv);
85e6fe83 151 }
54310121 152 RETURN;
93a17b20
LW
153}
154
ac217057
FC
155PP(pp_padcv)
156{
20b7effb 157 dSP; dTARGET;
97b03d64
FC
158 assert(SvTYPE(TARG) == SVt_PVCV);
159 XPUSHs(TARG);
160 RETURN;
ac217057
FC
161}
162
ecf9c8b7
FC
163PP(pp_introcv)
164{
20b7effb 165 dTARGET;
6d5c2147
FC
166 SvPADSTALE_off(TARG);
167 return NORMAL;
ecf9c8b7
FC
168}
169
13f89586
FC
170PP(pp_clonecv)
171{
20b7effb 172 dTARGET;
0f94cb1f
FC
173 CV * const protocv = PadnamePROTOCV(
174 PadlistNAMESARRAY(CvPADLIST(find_runcv(NULL)))[ARGTARG]
175 );
6d5c2147 176 assert(SvTYPE(TARG) == SVt_PVCV);
0f94cb1f
FC
177 assert(protocv);
178 if (CvISXSUB(protocv)) { /* constant */
6d5c2147 179 /* XXX Should we clone it here? */
6d5c2147
FC
180 /* If this changes to use SAVECLEARSV, we can move the SAVECLEARSV
181 to introcv and remove the SvPADSTALE_off. */
182 SAVEPADSVANDMORTALIZE(ARGTARG);
0f94cb1f 183 PAD_SVl(ARGTARG) = SvREFCNT_inc_simple_NN(protocv);
6d5c2147
FC
184 }
185 else {
0f94cb1f
FC
186 if (CvROOT(protocv)) {
187 assert(CvCLONE(protocv));
188 assert(!CvCLONED(protocv));
6d5c2147 189 }
0f94cb1f 190 cv_clone_into(protocv,(CV *)TARG);
6d5c2147
FC
191 SAVECLEARSV(PAD_SVl(ARGTARG));
192 }
193 return NORMAL;
13f89586
FC
194}
195
79072805
LW
196/* Translations. */
197
6f7909da
FC
198/* In some cases this function inspects PL_op. If this function is called
199 for new op types, more bool parameters may need to be added in place of
200 the checks.
201
202 When noinit is true, the absence of a gv will cause a retval of undef.
203 This is unrelated to the cv-to-gv assignment case.
6f7909da
FC
204*/
205
206static SV *
207S_rv2gv(pTHX_ SV *sv, const bool vivify_sv, const bool strict,
208 const bool noinit)
209{
f64c9ac5 210 if (!isGV(sv) || SvFAKE(sv)) SvGETMAGIC(sv);
ed6116ce 211 if (SvROK(sv)) {
93d7320b
DM
212 if (SvAMAGIC(sv)) {
213 sv = amagic_deref_call(sv, to_gv_amg);
93d7320b 214 }
e4a1664f 215 wasref:
ed6116ce 216 sv = SvRV(sv);
b1dadf13 217 if (SvTYPE(sv) == SVt_PVIO) {
159b6efe 218 GV * const gv = MUTABLE_GV(sv_newmortal());
885f468a 219 gv_init(gv, 0, "__ANONIO__", 10, 0);
a45c7426 220 GvIOp(gv) = MUTABLE_IO(sv);
b37c2d43 221 SvREFCNT_inc_void_NN(sv);
ad64d0ec 222 sv = MUTABLE_SV(gv);
ef54e1a4 223 }
81d52ecd
JH
224 else if (!isGV_with_GP(sv)) {
225 Perl_die(aTHX_ "Not a GLOB reference");
226 }
79072805
LW
227 }
228 else {
6e592b3a 229 if (!isGV_with_GP(sv)) {
f132ae69 230 if (!SvOK(sv)) {
b13b2135 231 /* If this is a 'my' scalar and flag is set then vivify
853846ea 232 * NI-S 1999/05/07
b13b2135 233 */
f132ae69 234 if (vivify_sv && sv != &PL_sv_undef) {
2c8ac474 235 GV *gv;
ce74145d 236 if (SvREADONLY(sv))
cb077ed2 237 Perl_croak_no_modify();
2c8ac474 238 if (cUNOP->op_targ) {
0bd48802 239 SV * const namesv = PAD_SV(cUNOP->op_targ);
94e7eb6f
FC
240 HV *stash = CopSTASH(PL_curcop);
241 if (SvTYPE(stash) != SVt_PVHV) stash = NULL;
159b6efe 242 gv = MUTABLE_GV(newSV(0));
94e7eb6f 243 gv_init_sv(gv, stash, namesv, 0);
2c8ac474
GS
244 }
245 else {
0bd48802 246 const char * const name = CopSTASHPV(PL_curcop);
6b10071b 247 gv = newGVgen_flags(name,
d14578b8 248 HvNAMEUTF8(CopSTASH(PL_curcop)) ? SVf_UTF8 : 0 );
7bdb4ff0 249 SvREFCNT_inc_simple_void_NN(gv);
1d8d4d2a 250 }
43230e26 251 prepare_SV_for_RV(sv);
ad64d0ec 252 SvRV_set(sv, MUTABLE_SV(gv));
853846ea 253 SvROK_on(sv);
1d8d4d2a 254 SvSETMAGIC(sv);
853846ea 255 goto wasref;
2c8ac474 256 }
81d52ecd
JH
257 if (PL_op->op_flags & OPf_REF || strict) {
258 Perl_die(aTHX_ PL_no_usym, "a symbol");
259 }
599cee73 260 if (ckWARN(WARN_UNINITIALIZED))
29489e7c 261 report_uninit(sv);
6f7909da 262 return &PL_sv_undef;
a0d0e21e 263 }
6f7909da 264 if (noinit)
35cd451c 265 {
77cb3b01
FC
266 if (!(sv = MUTABLE_SV(gv_fetchsv_nomg(
267 sv, GV_ADDMG, SVt_PVGV
23496c6e 268 ))))
6f7909da 269 return &PL_sv_undef;
35cd451c
GS
270 }
271 else {
81d52ecd
JH
272 if (strict) {
273 Perl_die(aTHX_
fedf30e1 274 PL_no_symref_sv,
81d52ecd
JH
275 sv,
276 (SvPOKp(sv) && SvCUR(sv)>32 ? "..." : ""),
277 "a symbol"
278 );
279 }
e26df76a
NC
280 if ((PL_op->op_private & (OPpLVAL_INTRO|OPpDONT_INIT_GV))
281 == OPpDONT_INIT_GV) {
282 /* We are the target of a coderef assignment. Return
283 the scalar unchanged, and let pp_sasssign deal with
284 things. */
6f7909da 285 return sv;
e26df76a 286 }
77cb3b01 287 sv = MUTABLE_SV(gv_fetchsv_nomg(sv, GV_ADD, SVt_PVGV));
35cd451c 288 }
2acc3314 289 /* FAKE globs in the symbol table cause weird bugs (#77810) */
96293f45 290 SvFAKE_off(sv);
93a17b20 291 }
79072805 292 }
8dc99089 293 if (SvFAKE(sv) && !(PL_op->op_private & OPpALLOW_FAKE)) {
2acc3314 294 SV *newsv = sv_newmortal();
5cf4b255 295 sv_setsv_flags(newsv, sv, 0);
2acc3314 296 SvFAKE_off(newsv);
d8906c05 297 sv = newsv;
2acc3314 298 }
6f7909da
FC
299 return sv;
300}
301
302PP(pp_rv2gv)
303{
20b7effb 304 dSP; dTOPss;
6f7909da
FC
305
306 sv = S_rv2gv(aTHX_
307 sv, PL_op->op_private & OPpDEREF,
308 PL_op->op_private & HINT_STRICT_REFS,
309 ((PL_op->op_flags & OPf_SPECIAL) && !(PL_op->op_flags & OPf_MOD))
310 || PL_op->op_type == OP_READLINE
311 );
d8906c05
FC
312 if (PL_op->op_private & OPpLVAL_INTRO)
313 save_gp(MUTABLE_GV(sv), !(PL_op->op_flags & OPf_SPECIAL));
314 SETs(sv);
79072805
LW
315 RETURN;
316}
317
dc3c76f8
NC
318/* Helper function for pp_rv2sv and pp_rv2av */
319GV *
fe9845cc
RB
320Perl_softref2xv(pTHX_ SV *const sv, const char *const what,
321 const svtype type, SV ***spp)
dc3c76f8 322{
dc3c76f8
NC
323 GV *gv;
324
7918f24d
NC
325 PERL_ARGS_ASSERT_SOFTREF2XV;
326
dc3c76f8
NC
327 if (PL_op->op_private & HINT_STRICT_REFS) {
328 if (SvOK(sv))
fedf30e1 329 Perl_die(aTHX_ PL_no_symref_sv, sv,
bf3d870f 330 (SvPOKp(sv) && SvCUR(sv)>32 ? "..." : ""), what);
dc3c76f8
NC
331 else
332 Perl_die(aTHX_ PL_no_usym, what);
333 }
334 if (!SvOK(sv)) {
fd1d9b5c 335 if (
c8fe3bdf 336 PL_op->op_flags & OPf_REF
fd1d9b5c 337 )
dc3c76f8
NC
338 Perl_die(aTHX_ PL_no_usym, what);
339 if (ckWARN(WARN_UNINITIALIZED))
340 report_uninit(sv);
341 if (type != SVt_PV && GIMME_V == G_ARRAY) {
342 (*spp)--;
343 return NULL;
344 }
345 **spp = &PL_sv_undef;
346 return NULL;
347 }
348 if ((PL_op->op_flags & OPf_SPECIAL) &&
349 !(PL_op->op_flags & OPf_MOD))
350 {
77cb3b01 351 if (!(gv = gv_fetchsv_nomg(sv, GV_ADDMG, type)))
dc3c76f8
NC
352 {
353 **spp = &PL_sv_undef;
354 return NULL;
355 }
356 }
357 else {
77cb3b01 358 gv = gv_fetchsv_nomg(sv, GV_ADD, type);
dc3c76f8
NC
359 }
360 return gv;
361}
362
79072805
LW
363PP(pp_rv2sv)
364{
20b7effb 365 dSP; dTOPss;
c445ea15 366 GV *gv = NULL;
79072805 367
9026059d 368 SvGETMAGIC(sv);
ed6116ce 369 if (SvROK(sv)) {
93d7320b
DM
370 if (SvAMAGIC(sv)) {
371 sv = amagic_deref_call(sv, to_sv_amg);
93d7320b 372 }
f5284f61 373
ed6116ce 374 sv = SvRV(sv);
69f00f67 375 if (SvTYPE(sv) >= SVt_PVAV)
cea2e8a9 376 DIE(aTHX_ "Not a SCALAR reference");
79072805
LW
377 }
378 else {
159b6efe 379 gv = MUTABLE_GV(sv);
748a9306 380
6e592b3a 381 if (!isGV_with_GP(gv)) {
dc3c76f8
NC
382 gv = Perl_softref2xv(aTHX_ sv, "a SCALAR", SVt_PV, &sp);
383 if (!gv)
384 RETURN;
463ee0b2 385 }
29c711a3 386 sv = GvSVn(gv);
a0d0e21e 387 }
533c011a 388 if (PL_op->op_flags & OPf_MOD) {
82d03984
RGS
389 if (PL_op->op_private & OPpLVAL_INTRO) {
390 if (cUNOP->op_first->op_type == OP_NULL)
159b6efe 391 sv = save_scalar(MUTABLE_GV(TOPs));
82d03984
RGS
392 else if (gv)
393 sv = save_scalar(gv);
394 else
f1f66076 395 Perl_croak(aTHX_ "%s", PL_no_localize_ref);
82d03984 396 }
533c011a 397 else if (PL_op->op_private & OPpDEREF)
9026059d 398 sv = vivify_ref(sv, PL_op->op_private & OPpDEREF);
79072805 399 }
a0d0e21e 400 SETs(sv);
79072805
LW
401 RETURN;
402}
403
404PP(pp_av2arylen)
405{
20b7effb 406 dSP;
502c6561 407 AV * const av = MUTABLE_AV(TOPs);
02d85cc3
EB
408 const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
409 if (lvalue) {
8160c8f5
DM
410 SV ** const svp = Perl_av_arylen_p(aTHX_ MUTABLE_AV(av));
411 if (!*svp) {
412 *svp = newSV_type(SVt_PVMG);
413 sv_magic(*svp, MUTABLE_SV(av), PERL_MAGIC_arylen, NULL, 0);
02d85cc3 414 }
8160c8f5 415 SETs(*svp);
02d85cc3 416 } else {
e1dccc0d 417 SETs(sv_2mortal(newSViv(AvFILL(MUTABLE_AV(av)))));
79072805 418 }
79072805
LW
419 RETURN;
420}
421
a0d0e21e
LW
422PP(pp_pos)
423{
27a8dde8 424 dSP; dTOPss;
8ec5e241 425
78f9721b 426 if (PL_op->op_flags & OPf_MOD || LVRET) {
d14578b8 427 SV * const ret = sv_2mortal(newSV_type(SVt_PVLV));/* Not TARG RT#67838 */
16eb5365
FC
428 sv_magic(ret, NULL, PERL_MAGIC_pos, NULL, 0);
429 LvTYPE(ret) = '.';
430 LvTARG(ret) = SvREFCNT_inc_simple(sv);
27a8dde8 431 SETs(ret); /* no SvSETMAGIC */
a0d0e21e
LW
432 }
433 else {
96c2a8ff 434 const MAGIC * const mg = mg_find_mglob(sv);
6174b39a 435 if (mg && mg->mg_len != -1) {
2154eca7 436 dTARGET;
6174b39a 437 STRLEN i = mg->mg_len;
25fdce4a 438 if (mg->mg_flags & MGf_BYTES && DO_UTF8(sv))
6174b39a 439 i = sv_pos_b2u_flags(sv, i, SV_GMAGIC|SV_CONST_RETURN);
27a8dde8
FC
440 SETu(i);
441 return NORMAL;
a0d0e21e 442 }
27a8dde8 443 SETs(&PL_sv_undef);
a0d0e21e 444 }
27a8dde8 445 return NORMAL;
a0d0e21e
LW
446}
447
79072805
LW
448PP(pp_rv2cv)
449{
20b7effb 450 dSP;
79072805 451 GV *gv;
1eced8f8 452 HV *stash_unused;
c445ea15 453 const I32 flags = (PL_op->op_flags & OPf_SPECIAL)
9da346da 454 ? GV_ADDMG
d14578b8
KW
455 : ((PL_op->op_private & (OPpLVAL_INTRO|OPpMAY_RETURN_CONSTANT))
456 == OPpMAY_RETURN_CONSTANT)
c445ea15
AL
457 ? GV_ADD|GV_NOEXPAND
458 : GV_ADD;
4633a7c4
LW
459 /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */
460 /* (But not in defined().) */
e26df76a 461
1eced8f8 462 CV *cv = sv_2cv(TOPs, &stash_unused, &gv, flags);
5a20ba3d 463 if (cv) NOOP;
e26df76a 464 else if ((flags == (GV_ADD|GV_NOEXPAND)) && gv && SvROK(gv)) {
2eaf799e
FC
465 cv = SvTYPE(SvRV(gv)) == SVt_PVCV
466 ? MUTABLE_CV(SvRV(gv))
467 : MUTABLE_CV(gv);
e26df76a 468 }
07055b4c 469 else
ea726b52 470 cv = MUTABLE_CV(&PL_sv_undef);
ad64d0ec 471 SETs(MUTABLE_SV(cv));
3d79e3ee 472 return NORMAL;
79072805
LW
473}
474
c07a80fd
PP
475PP(pp_prototype)
476{
20b7effb 477 dSP;
c07a80fd
PP
478 CV *cv;
479 HV *stash;
480 GV *gv;
fabdb6c0 481 SV *ret = &PL_sv_undef;
c07a80fd 482
6954f42f 483 if (SvGMAGICAL(TOPs)) SETs(sv_mortalcopy(TOPs));
b6c543e3 484 if (SvPOK(TOPs) && SvCUR(TOPs) >= 7) {
e3f73d4e 485 const char * s = SvPVX_const(TOPs);
b6c543e3 486 if (strnEQ(s, "CORE::", 6)) {
be1b855b 487 const int code = keyword(s + 6, SvCUR(TOPs) - 6, 1);
a96df643 488 if (!code)
b17a0679
FC
489 DIE(aTHX_ "Can't find an opnumber for \"%"UTF8f"\"",
490 UTF8fARG(SvFLAGS(TOPs) & SVf_UTF8, SvCUR(TOPs)-6, s+6));
4e338c21 491 {
b66130dd
FC
492 SV * const sv = core_prototype(NULL, s + 6, code, NULL);
493 if (sv) ret = sv;
494 }
b8c38f0a 495 goto set;
b6c543e3
IZ
496 }
497 }
f2c0649b 498 cv = sv_2cv(TOPs, &stash, &gv, 0);
5f05dabc 499 if (cv && SvPOK(cv))
8fa6a409
FC
500 ret = newSVpvn_flags(
501 CvPROTO(cv), CvPROTOLEN(cv), SVs_TEMP | SvUTF8(cv)
502 );
b6c543e3 503 set:
c07a80fd
PP
504 SETs(ret);
505 RETURN;
506}
507
a0d0e21e
LW
508PP(pp_anoncode)
509{
20b7effb 510 dSP;
ea726b52 511 CV *cv = MUTABLE_CV(PAD_SV(PL_op->op_targ));
a5f75d66 512 if (CvCLONE(cv))
ad64d0ec 513 cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
5f05dabc 514 EXTEND(SP,1);
ad64d0ec 515 PUSHs(MUTABLE_SV(cv));
a0d0e21e
LW
516 RETURN;
517}
518
519PP(pp_srefgen)
79072805 520{
20b7effb 521 dSP;
71be2cbc 522 *SP = refto(*SP);
3ed34c76 523 return NORMAL;
8ec5e241 524}
a0d0e21e
LW
525
526PP(pp_refgen)
527{
20b7effb 528 dSP; dMARK;
82334630 529 if (GIMME_V != G_ARRAY) {
5f0b1d4e
GS
530 if (++MARK <= SP)
531 *MARK = *SP;
532 else
1d51ab6c
FC
533 {
534 MEXTEND(SP, 1);
3280af22 535 *MARK = &PL_sv_undef;
1d51ab6c 536 }
5f0b1d4e
GS
537 *MARK = refto(*MARK);
538 SP = MARK;
539 RETURN;
a0d0e21e 540 }
bbce6d69 541 EXTEND_MORTAL(SP - MARK);
71be2cbc
PP
542 while (++MARK <= SP)
543 *MARK = refto(*MARK);
a0d0e21e 544 RETURN;
79072805
LW
545}
546
76e3520e 547STATIC SV*
cea2e8a9 548S_refto(pTHX_ SV *sv)
71be2cbc
PP
549{
550 SV* rv;
551
7918f24d
NC
552 PERL_ARGS_ASSERT_REFTO;
553
71be2cbc
PP
554 if (SvTYPE(sv) == SVt_PVLV && LvTYPE(sv) == 'y') {
555 if (LvTARGLEN(sv))
68dc0745
PP
556 vivify_defelem(sv);
557 if (!(sv = LvTARG(sv)))
3280af22 558 sv = &PL_sv_undef;
0dd88869 559 else
b37c2d43 560 SvREFCNT_inc_void_NN(sv);
71be2cbc 561 }
d8b46c1b 562 else if (SvTYPE(sv) == SVt_PVAV) {
502c6561
NC
563 if (!AvREAL((const AV *)sv) && AvREIFY((const AV *)sv))
564 av_reify(MUTABLE_AV(sv));
d8b46c1b 565 SvTEMP_off(sv);
b37c2d43 566 SvREFCNT_inc_void_NN(sv);
d8b46c1b 567 }
60779a30 568 else if (SvPADTMP(sv)) {
f2933f5f 569 sv = newSVsv(sv);
60779a30 570 }
71be2cbc
PP
571 else {
572 SvTEMP_off(sv);
b37c2d43 573 SvREFCNT_inc_void_NN(sv);
71be2cbc
PP
574 }
575 rv = sv_newmortal();
4df7f6af 576 sv_upgrade(rv, SVt_IV);
b162af07 577 SvRV_set(rv, sv);
71be2cbc
PP
578 SvROK_on(rv);
579 return rv;
580}
581
79072805
LW
582PP(pp_ref)
583{
3c1e67ac
DD
584 dSP;
585 SV * const sv = TOPs;
f12c7020 586
511ddbdf
FC
587 SvGETMAGIC(sv);
588 if (!SvROK(sv))
3c1e67ac
DD
589 SETs(&PL_sv_no);
590 else {
591 dTARGET;
592 SETs(TARG);
593 /* use the return value that is in a register, its the same as TARG */
594 TARG = sv_ref(TARG,SvRV(sv),TRUE);
595 SvSETMAGIC(TARG);
596 }
79072805 597
3c1e67ac 598 return NORMAL;
79072805
LW
599}
600
601PP(pp_bless)
602{
20b7effb 603 dSP;
463ee0b2 604 HV *stash;
79072805 605
463ee0b2 606 if (MAXARG == 1)
dcdfe746 607 {
c2f922f1 608 curstash:
11faa288 609 stash = CopSTASH(PL_curcop);
dcdfe746
FC
610 if (SvTYPE(stash) != SVt_PVHV)
611 Perl_croak(aTHX_ "Attempt to bless into a freed package");
612 }
7b8d334a 613 else {
1b6737cc 614 SV * const ssv = POPs;
7b8d334a 615 STRLEN len;
e1ec3a88 616 const char *ptr;
81689caa 617
c2f922f1 618 if (!ssv) goto curstash;
8d9dd4b9 619 SvGETMAGIC(ssv);
c7ea825d
FC
620 if (SvROK(ssv)) {
621 if (!SvAMAGIC(ssv)) {
622 frog:
81689caa 623 Perl_croak(aTHX_ "Attempt to bless into a reference");
c7ea825d
FC
624 }
625 /* SvAMAGIC is on here, but it only means potentially overloaded,
626 so after stringification: */
627 ptr = SvPV_nomg_const(ssv,len);
628 /* We need to check the flag again: */
629 if (!SvAMAGIC(ssv)) goto frog;
630 }
631 else ptr = SvPV_nomg_const(ssv,len);
a2a5de95
NC
632 if (len == 0)
633 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
634 "Explicit blessing to '' (assuming package main)");
e69c50fe 635 stash = gv_stashpvn(ptr, len, GV_ADD|SvUTF8(ssv));
7b8d334a 636 }
a0d0e21e 637
5d3fdfeb 638 (void)sv_bless(TOPs, stash);
79072805
LW
639 RETURN;
640}
641
fb73857a
PP
642PP(pp_gelem)
643{
20b7effb 644 dSP;
b13b2135 645
1b6737cc 646 SV *sv = POPs;
a180b31a
BF
647 STRLEN len;
648 const char * const elem = SvPV_const(sv, len);
5695161e 649 GV * const gv = MUTABLE_GV(TOPs);
c445ea15 650 SV * tmpRef = NULL;
1b6737cc 651
c445ea15 652 sv = NULL;
c4ba80c3
NC
653 if (elem) {
654 /* elem will always be NUL terminated. */
1b6737cc 655 const char * const second_letter = elem + 1;
c4ba80c3
NC
656 switch (*elem) {
657 case 'A':
a180b31a 658 if (len == 5 && strEQ(second_letter, "RRAY"))
e14698d8 659 {
ad64d0ec 660 tmpRef = MUTABLE_SV(GvAV(gv));
e14698d8
FC
661 if (tmpRef && !AvREAL((const AV *)tmpRef)
662 && AvREIFY((const AV *)tmpRef))
663 av_reify(MUTABLE_AV(tmpRef));
664 }
c4ba80c3
NC
665 break;
666 case 'C':
a180b31a 667 if (len == 4 && strEQ(second_letter, "ODE"))
ad64d0ec 668 tmpRef = MUTABLE_SV(GvCVu(gv));
c4ba80c3
NC
669 break;
670 case 'F':
a180b31a 671 if (len == 10 && strEQ(second_letter, "ILEHANDLE")) {
c4ba80c3
NC
672 /* finally deprecated in 5.8.0 */
673 deprecate("*glob{FILEHANDLE}");
ad64d0ec 674 tmpRef = MUTABLE_SV(GvIOp(gv));
c4ba80c3
NC
675 }
676 else
a180b31a 677 if (len == 6 && strEQ(second_letter, "ORMAT"))
ad64d0ec 678 tmpRef = MUTABLE_SV(GvFORM(gv));
c4ba80c3
NC
679 break;
680 case 'G':
a180b31a 681 if (len == 4 && strEQ(second_letter, "LOB"))
ad64d0ec 682 tmpRef = MUTABLE_SV(gv);
c4ba80c3
NC
683 break;
684 case 'H':
a180b31a 685 if (len == 4 && strEQ(second_letter, "ASH"))
ad64d0ec 686 tmpRef = MUTABLE_SV(GvHV(gv));
c4ba80c3
NC
687 break;
688 case 'I':
a180b31a 689 if (*second_letter == 'O' && !elem[2] && len == 2)
ad64d0ec 690 tmpRef = MUTABLE_SV(GvIOp(gv));
c4ba80c3
NC
691 break;
692 case 'N':
a180b31a 693 if (len == 4 && strEQ(second_letter, "AME"))
a663657d 694 sv = newSVhek(GvNAME_HEK(gv));
c4ba80c3
NC
695 break;
696 case 'P':
a180b31a 697 if (len == 7 && strEQ(second_letter, "ACKAGE")) {
7fa3a4ab
NC
698 const HV * const stash = GvSTASH(gv);
699 const HEK * const hek = stash ? HvNAME_HEK(stash) : NULL;
396482e1 700 sv = hek ? newSVhek(hek) : newSVpvs("__ANON__");
c4ba80c3
NC
701 }
702 break;
703 case 'S':
a180b31a 704 if (len == 6 && strEQ(second_letter, "CALAR"))
f9d52e31 705 tmpRef = GvSVn(gv);
c4ba80c3 706 break;
39b99f21 707 }
fb73857a 708 }
76e3520e
GS
709 if (tmpRef)
710 sv = newRV(tmpRef);
fb73857a
PP
711 if (sv)
712 sv_2mortal(sv);
713 else
3280af22 714 sv = &PL_sv_undef;
5695161e 715 SETs(sv);
fb73857a
PP
716 RETURN;
717}
718
a0d0e21e 719/* Pattern matching */
79072805 720
a0d0e21e 721PP(pp_study)
79072805 722{
add3e777 723 dSP; dTOPss;
a0d0e21e
LW
724 STRLEN len;
725
1fa930f2 726 (void)SvPV(sv, len);
bc9a5256 727 if (len == 0 || len > I32_MAX || !SvPOK(sv) || SvUTF8(sv) || SvVALID(sv)) {
32f0ea87 728 /* Historically, study was skipped in these cases. */
add3e777
FC
729 SETs(&PL_sv_no);
730 return NORMAL;
a4f4e906
NC
731 }
732
a58a85fa 733 /* Make study a no-op. It's no longer useful and its existence
32f0ea87 734 complicates matters elsewhere. */
add3e777
FC
735 SETs(&PL_sv_yes);
736 return NORMAL;
79072805
LW
737}
738
b1c05ba5
DM
739
740/* also used for: pp_transr() */
741
a0d0e21e 742PP(pp_trans)
79072805 743{
6442877a 744 dSP;
a0d0e21e
LW
745 SV *sv;
746
533c011a 747 if (PL_op->op_flags & OPf_STACKED)
a0d0e21e 748 sv = POPs;
79072805 749 else {
a0d0e21e 750 EXTEND(SP,1);
f605e527 751 if (ARGTARG)
6442877a 752 sv = PAD_SV(ARGTARG);
f605e527
FC
753 else {
754 sv = DEFSV;
755 }
79072805 756 }
bb16bae8 757 if(PL_op->op_type == OP_TRANSR) {
290797f7
FC
758 STRLEN len;
759 const char * const pv = SvPV(sv,len);
760 SV * const newsv = newSVpvn_flags(pv, len, SVs_TEMP|SvUTF8(sv));
bb16bae8 761 do_trans(newsv);
290797f7 762 PUSHs(newsv);
bb16bae8 763 }
5bbe7184 764 else {
6442877a 765 mPUSHi(do_trans(sv));
5bbe7184 766 }
a0d0e21e 767 RETURN;
79072805
LW
768}
769
a0d0e21e 770/* Lvalue operators. */
79072805 771
f595e19f 772static size_t
81745e4e
NC
773S_do_chomp(pTHX_ SV *retval, SV *sv, bool chomping)
774{
81745e4e
NC
775 STRLEN len;
776 char *s;
f595e19f 777 size_t count = 0;
81745e4e
NC
778
779 PERL_ARGS_ASSERT_DO_CHOMP;
780
781 if (chomping && (RsSNARF(PL_rs) || RsRECORD(PL_rs)))
f595e19f 782 return 0;
81745e4e
NC
783 if (SvTYPE(sv) == SVt_PVAV) {
784 I32 i;
785 AV *const av = MUTABLE_AV(sv);
786 const I32 max = AvFILL(av);
787
788 for (i = 0; i <= max; i++) {
789 sv = MUTABLE_SV(av_fetch(av, i, FALSE));
790 if (sv && ((sv = *(SV**)sv), sv != &PL_sv_undef))
f595e19f 791 count += do_chomp(retval, sv, chomping);
81745e4e 792 }
f595e19f 793 return count;
81745e4e
NC
794 }
795 else if (SvTYPE(sv) == SVt_PVHV) {
796 HV* const hv = MUTABLE_HV(sv);
797 HE* entry;
798 (void)hv_iterinit(hv);
799 while ((entry = hv_iternext(hv)))
f595e19f
FC
800 count += do_chomp(retval, hv_iterval(hv,entry), chomping);
801 return count;
81745e4e
NC
802 }
803 else if (SvREADONLY(sv)) {
cb077ed2 804 Perl_croak_no_modify();
81745e4e
NC
805 }
806
47e13f24 807 if (IN_ENCODING) {
81745e4e
NC
808 if (!SvUTF8(sv)) {
809 /* XXX, here sv is utf8-ized as a side-effect!
810 If encoding.pm is used properly, almost string-generating
811 operations, including literal strings, chr(), input data, etc.
812 should have been utf8-ized already, right?
813 */
ad2de1b2 814 sv_recode_to_utf8(sv, _get_encoding());
81745e4e
NC
815 }
816 }
817
818 s = SvPV(sv, len);
819 if (chomping) {
820 char *temp_buffer = NULL;
821 SV *svrecode = NULL;
822
823 if (s && len) {
824 s += --len;
825 if (RsPARA(PL_rs)) {
826 if (*s != '\n')
827 goto nope;
f595e19f 828 ++count;
81745e4e
NC
829 while (len && s[-1] == '\n') {
830 --len;
831 --s;
f595e19f 832 ++count;
81745e4e
NC
833 }
834 }
835 else {
836 STRLEN rslen, rs_charlen;
837 const char *rsptr = SvPV_const(PL_rs, rslen);
838
839 rs_charlen = SvUTF8(PL_rs)
840 ? sv_len_utf8(PL_rs)
841 : rslen;
842
843 if (SvUTF8(PL_rs) != SvUTF8(sv)) {
844 /* Assumption is that rs is shorter than the scalar. */
845 if (SvUTF8(PL_rs)) {
846 /* RS is utf8, scalar is 8 bit. */
847 bool is_utf8 = TRUE;
848 temp_buffer = (char*)bytes_from_utf8((U8*)rsptr,
849 &rslen, &is_utf8);
850 if (is_utf8) {
851 /* Cannot downgrade, therefore cannot possibly match
852 */
853 assert (temp_buffer == rsptr);
854 temp_buffer = NULL;
855 goto nope;
856 }
857 rsptr = temp_buffer;
858 }
47e13f24 859 else if (IN_ENCODING) {
81745e4e
NC
860 /* RS is 8 bit, encoding.pm is used.
861 * Do not recode PL_rs as a side-effect. */
862 svrecode = newSVpvn(rsptr, rslen);
ad2de1b2 863 sv_recode_to_utf8(svrecode, _get_encoding());
81745e4e
NC
864 rsptr = SvPV_const(svrecode, rslen);
865 rs_charlen = sv_len_utf8(svrecode);
866 }
867 else {
868 /* RS is 8 bit, scalar is utf8. */
869 temp_buffer = (char*)bytes_to_utf8((U8*)rsptr, &rslen);
870 rsptr = temp_buffer;
871 }
872 }
873 if (rslen == 1) {
874 if (*s != *rsptr)
875 goto nope;
f595e19f 876 ++count;
81745e4e
NC
877 }
878 else {
879 if (len < rslen - 1)
880 goto nope;
881 len -= rslen - 1;
882 s -= rslen - 1;
883 if (memNE(s, rsptr, rslen))
884 goto nope;
f595e19f 885 count += rs_charlen;
81745e4e
NC
886 }
887 }
3b7ded39 888 SvPV_force_nomg_nolen(sv);
81745e4e
NC
889 SvCUR_set(sv, len);
890 *SvEND(sv) = '\0';
891 SvNIOK_off(sv);
892 SvSETMAGIC(sv);
893 }
894 nope:
895
896 SvREFCNT_dec(svrecode);
897
898 Safefree(temp_buffer);
899 } else {
f8c80a8e 900 if (len && (!SvPOK(sv) || SvIsCOW(sv)))
81745e4e
NC
901 s = SvPV_force_nomg(sv, len);
902 if (DO_UTF8(sv)) {
903 if (s && len) {
904 char * const send = s + len;
905 char * const start = s;
906 s = send - 1;
907 while (s > start && UTF8_IS_CONTINUATION(*s))
908 s--;
909 if (is_utf8_string((U8*)s, send - s)) {
910 sv_setpvn(retval, s, send - s);
911 *s = '\0';
912 SvCUR_set(sv, s - start);
913 SvNIOK_off(sv);
914 SvUTF8_on(retval);
915 }
916 }
917 else
918 sv_setpvs(retval, "");
919 }
920 else if (s && len) {
921 s += --len;
922 sv_setpvn(retval, s, 1);
923 *s = '\0';
924 SvCUR_set(sv, len);
925 SvUTF8_off(sv);
926 SvNIOK_off(sv);
927 }
928 else
929 sv_setpvs(retval, "");
930 SvSETMAGIC(sv);
931 }
f595e19f 932 return count;
81745e4e
NC
933}
934
b1c05ba5
DM
935
936/* also used for: pp_schomp() */
937
a0d0e21e
LW
938PP(pp_schop)
939{
20b7effb 940 dSP; dTARGET;
fa54efae
NC
941 const bool chomping = PL_op->op_type == OP_SCHOMP;
942
f595e19f 943 const size_t count = do_chomp(TARG, TOPs, chomping);
fa54efae 944 if (chomping)
f595e19f 945 sv_setiv(TARG, count);
a0d0e21e 946 SETTARG;
ee41d8c7 947 return NORMAL;
79072805
LW
948}
949
b1c05ba5
DM
950
951/* also used for: pp_chomp() */
952
a0d0e21e 953PP(pp_chop)
79072805 954{
20b7effb 955 dSP; dMARK; dTARGET; dORIGMARK;
fa54efae 956 const bool chomping = PL_op->op_type == OP_CHOMP;
f595e19f 957 size_t count = 0;
8ec5e241 958
20cf1f79 959 while (MARK < SP)
f595e19f
FC
960 count += do_chomp(TARG, *++MARK, chomping);
961 if (chomping)
962 sv_setiv(TARG, count);
20cf1f79
NC
963 SP = ORIGMARK;
964 XPUSHTARG;
a0d0e21e 965 RETURN;
79072805
LW
966}
967
a0d0e21e
LW
968PP(pp_undef)
969{
20b7effb 970 dSP;
a0d0e21e
LW
971 SV *sv;
972
533c011a 973 if (!PL_op->op_private) {
774d564b 974 EXTEND(SP, 1);
a0d0e21e 975 RETPUSHUNDEF;
774d564b 976 }
79072805 977
821f14b0 978 sv = TOPs;
a0d0e21e 979 if (!sv)
821f14b0
FC
980 {
981 SETs(&PL_sv_undef);
982 return NORMAL;
983 }
85e6fe83 984
4dda930b
FC
985 if (SvTHINKFIRST(sv))
986 sv_force_normal_flags(sv, SV_COW_DROP_PV|SV_IMMEDIATE_UNREF);
85e6fe83 987
a0d0e21e
LW
988 switch (SvTYPE(sv)) {
989 case SVt_NULL:
990 break;
991 case SVt_PVAV:
60edcf09 992 av_undef(MUTABLE_AV(sv));
a0d0e21e
LW
993 break;
994 case SVt_PVHV:
60edcf09 995 hv_undef(MUTABLE_HV(sv));
a0d0e21e
LW
996 break;
997 case SVt_PVCV:
a2a5de95 998 if (cv_const_sv((const CV *)sv))
714cd18f
BF
999 Perl_ck_warner(aTHX_ packWARN(WARN_MISC),
1000 "Constant subroutine %"SVf" undefined",
1001 SVfARG(CvANON((const CV *)sv)
1002 ? newSVpvs_flags("(anonymous)", SVs_TEMP)
bdbfc51a
FC
1003 : sv_2mortal(newSVhek(
1004 CvNAMED(sv)
1005 ? CvNAME_HEK((CV *)sv)
1006 : GvENAME_HEK(CvGV((const CV *)sv))
1007 ))
1008 ));
5f66b61c 1009 /* FALLTHROUGH */
9607fc9c 1010 case SVt_PVFM:
6fc92669 1011 /* let user-undef'd sub keep its identity */
b7acb0a3 1012 cv_undef_flags(MUTABLE_CV(sv), CV_UNDEF_KEEP_NAME);
a0d0e21e 1013 break;
8e07c86e 1014 case SVt_PVGV:
bc1df6c2
FC
1015 assert(isGV_with_GP(sv));
1016 assert(!SvFAKE(sv));
1017 {
20408e3c 1018 GP *gp;
dd69841b
BB
1019 HV *stash;
1020
dd69841b 1021 /* undef *Pkg::meth_name ... */
e530fb81
FC
1022 bool method_changed
1023 = GvCVu((const GV *)sv) && (stash = GvSTASH((const GV *)sv))
1024 && HvENAME_get(stash);
1025 /* undef *Foo:: */
1026 if((stash = GvHV((const GV *)sv))) {
1027 if(HvENAME_get(stash))
1028 SvREFCNT_inc_simple_void_NN(sv_2mortal((SV *)stash));
1029 else stash = NULL;
1030 }
dd69841b 1031
795eb8c8 1032 SvREFCNT_inc_simple_void_NN(sv_2mortal(sv));
159b6efe 1033 gp_free(MUTABLE_GV(sv));
a02a5408 1034 Newxz(gp, 1, GP);
c43ae56f 1035 GvGP_set(sv, gp_ref(gp));
2e3295e3 1036#ifndef PERL_DONT_CREATE_GVSV
561b68a9 1037 GvSV(sv) = newSV(0);
2e3295e3 1038#endif
57843af0 1039 GvLINE(sv) = CopLINE(PL_curcop);
159b6efe 1040 GvEGV(sv) = MUTABLE_GV(sv);
20408e3c 1041 GvMULTI_on(sv);
e530fb81
FC
1042
1043 if(stash)
afdbe55d 1044 mro_package_moved(NULL, stash, (const GV *)sv, 0);
e530fb81
FC
1045 stash = NULL;
1046 /* undef *Foo::ISA */
1047 if( strEQ(GvNAME((const GV *)sv), "ISA")
1048 && (stash = GvSTASH((const GV *)sv))
1049 && (method_changed || HvENAME(stash)) )
1050 mro_isa_changed_in(stash);
1051 else if(method_changed)
1052 mro_method_changed_in(
da9043f5 1053 GvSTASH((const GV *)sv)
e530fb81
FC
1054 );
1055
6e592b3a 1056 break;
20408e3c 1057 }
a0d0e21e 1058 default:
b15aece3 1059 if (SvTYPE(sv) >= SVt_PV && SvPVX_const(sv) && SvLEN(sv)) {
8bd4d4c5 1060 SvPV_free(sv);
c445ea15 1061 SvPV_set(sv, NULL);
4633a7c4 1062 SvLEN_set(sv, 0);
a0d0e21e 1063 }
0c34ef67 1064 SvOK_off(sv);
4633a7c4 1065 SvSETMAGIC(sv);
79072805 1066 }
a0d0e21e 1067
821f14b0
FC
1068 SETs(&PL_sv_undef);
1069 return NORMAL;
79072805
LW
1070}
1071
b1c05ba5
DM
1072
1073/* also used for: pp_i_postdec() pp_i_postinc() pp_postdec() */
1074
a0d0e21e
LW
1075PP(pp_postinc)
1076{
20b7effb 1077 dSP; dTARGET;
c22c99bc
FC
1078 const bool inc =
1079 PL_op->op_type == OP_POSTINC || PL_op->op_type == OP_I_POSTINC;
60092ce4 1080 if (SvTYPE(TOPs) >= SVt_PVAV || (isGV_with_GP(TOPs) && !SvFAKE(TOPs)))
cb077ed2 1081 Perl_croak_no_modify();
3baa0581 1082 if (SvROK(TOPs))
7dcb9b98 1083 TARG = sv_newmortal();
a0d0e21e 1084 sv_setsv(TARG, TOPs);
4bac9ae4 1085 if (!SvREADONLY(TOPs) && !SvGMAGICAL(TOPs) && SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs)
c22c99bc 1086 && SvIVX(TOPs) != (inc ? IV_MAX : IV_MIN))
55497cff 1087 {
c22c99bc 1088 SvIV_set(TOPs, SvIVX(TOPs) + (inc ? 1 : -1));
55497cff 1089 SvFLAGS(TOPs) &= ~(SVp_NOK|SVp_POK);
748a9306 1090 }
c22c99bc 1091 else if (inc)
6f1401dc 1092 sv_inc_nomg(TOPs);
c22c99bc 1093 else sv_dec_nomg(TOPs);
a0d0e21e 1094 SvSETMAGIC(TOPs);
1e54a23f 1095 /* special case for undef: see thread at 2003-03/msg00536.html in archive */
c22c99bc 1096 if (inc && !SvOK(TARG))
a0d0e21e 1097 sv_setiv(TARG, 0);
e87de4ab 1098 SETTARG;
a0d0e21e
LW
1099 return NORMAL;
1100}
79072805 1101
a0d0e21e
LW
1102/* Ordinary operators. */
1103
1104PP(pp_pow)
1105{
20b7effb 1106 dSP; dATARGET; SV *svl, *svr;
58d76dfd 1107#ifdef PERL_PRESERVE_IVUV
52a96ae6
HS
1108 bool is_int = 0;
1109#endif
6f1401dc
DM
1110 tryAMAGICbin_MG(pow_amg, AMGf_assign|AMGf_numeric);
1111 svr = TOPs;
1112 svl = TOPm1s;
52a96ae6
HS
1113#ifdef PERL_PRESERVE_IVUV
1114 /* For integer to integer power, we do the calculation by hand wherever
1115 we're sure it is safe; otherwise we call pow() and try to convert to
1116 integer afterwards. */
01f91bf2 1117 if (SvIV_please_nomg(svr) && SvIV_please_nomg(svl)) {
900658e3
PF
1118 UV power;
1119 bool baseuok;
1120 UV baseuv;
1121
800401ee
JH
1122 if (SvUOK(svr)) {
1123 power = SvUVX(svr);
900658e3 1124 } else {
800401ee 1125 const IV iv = SvIVX(svr);
900658e3
PF
1126 if (iv >= 0) {
1127 power = iv;
1128 } else {
1129 goto float_it; /* Can't do negative powers this way. */
1130 }
1131 }
1132
800401ee 1133 baseuok = SvUOK(svl);
900658e3 1134 if (baseuok) {
800401ee 1135 baseuv = SvUVX(svl);
900658e3 1136 } else {
800401ee 1137 const IV iv = SvIVX(svl);
900658e3
PF
1138 if (iv >= 0) {
1139 baseuv = iv;
1140 baseuok = TRUE; /* effectively it's a UV now */
1141 } else {
1142 baseuv = -iv; /* abs, baseuok == false records sign */
1143 }
1144 }
52a96ae6
HS
1145 /* now we have integer ** positive integer. */
1146 is_int = 1;
1147
1148 /* foo & (foo - 1) is zero only for a power of 2. */
58d76dfd 1149 if (!(baseuv & (baseuv - 1))) {
52a96ae6 1150 /* We are raising power-of-2 to a positive integer.
58d76dfd
JH
1151 The logic here will work for any base (even non-integer
1152 bases) but it can be less accurate than
1153 pow (base,power) or exp (power * log (base)) when the
1154 intermediate values start to spill out of the mantissa.
1155 With powers of 2 we know this can't happen.
1156 And powers of 2 are the favourite thing for perl
1157 programmers to notice ** not doing what they mean. */
1158 NV result = 1.0;
1159 NV base = baseuok ? baseuv : -(NV)baseuv;
900658e3
PF
1160
1161 if (power & 1) {
1162 result *= base;
1163 }
1164 while (power >>= 1) {
1165 base *= base;
1166 if (power & 1) {
1167 result *= base;
1168 }
1169 }
58d76dfd
JH
1170 SP--;
1171 SETn( result );
6f1401dc 1172 SvIV_please_nomg(svr);
58d76dfd 1173 RETURN;
52a96ae6 1174 } else {
eb578fdb
KW
1175 unsigned int highbit = 8 * sizeof(UV);
1176 unsigned int diff = 8 * sizeof(UV);
900658e3
PF
1177 while (diff >>= 1) {
1178 highbit -= diff;
1179 if (baseuv >> highbit) {
1180 highbit += diff;
1181 }
52a96ae6
HS
1182 }
1183 /* we now have baseuv < 2 ** highbit */
1184 if (power * highbit <= 8 * sizeof(UV)) {
1185 /* result will definitely fit in UV, so use UV math
1186 on same algorithm as above */
eb578fdb
KW
1187 UV result = 1;
1188 UV base = baseuv;
f2338a2e 1189 const bool odd_power = cBOOL(power & 1);
900658e3
PF
1190 if (odd_power) {
1191 result *= base;
1192 }
1193 while (power >>= 1) {
1194 base *= base;
1195 if (power & 1) {
52a96ae6 1196 result *= base;
52a96ae6
HS
1197 }
1198 }
1199 SP--;
0615a994 1200 if (baseuok || !odd_power)
52a96ae6
HS
1201 /* answer is positive */
1202 SETu( result );
1203 else if (result <= (UV)IV_MAX)
1204 /* answer negative, fits in IV */
1205 SETi( -(IV)result );
1206 else if (result == (UV)IV_MIN)
1207 /* 2's complement assumption: special case IV_MIN */
1208 SETi( IV_MIN );
1209 else
1210 /* answer negative, doesn't fit */
1211 SETn( -(NV)result );
1212 RETURN;
1213 }
1214 }
58d76dfd 1215 }
52a96ae6 1216 float_it:
58d76dfd 1217#endif
a0d0e21e 1218 {
6f1401dc
DM
1219 NV right = SvNV_nomg(svr);
1220 NV left = SvNV_nomg(svl);
4efa5a16 1221 (void)POPs;
3aaeb624
JA
1222
1223#if defined(USE_LONG_DOUBLE) && defined(HAS_AIX_POWL_NEG_BASE_BUG)
1224 /*
1225 We are building perl with long double support and are on an AIX OS
1226 afflicted with a powl() function that wrongly returns NaNQ for any
1227 negative base. This was reported to IBM as PMR #23047-379 on
1228 03/06/2006. The problem exists in at least the following versions
1229 of AIX and the libm fileset, and no doubt others as well:
1230
1231 AIX 4.3.3-ML10 bos.adt.libm 4.3.3.50
1232 AIX 5.1.0-ML04 bos.adt.libm 5.1.0.29
1233 AIX 5.2.0 bos.adt.libm 5.2.0.85
1234
1235 So, until IBM fixes powl(), we provide the following workaround to
1236 handle the problem ourselves. Our logic is as follows: for
1237 negative bases (left), we use fmod(right, 2) to check if the
1238 exponent is an odd or even integer:
1239
1240 - if odd, powl(left, right) == -powl(-left, right)
1241 - if even, powl(left, right) == powl(-left, right)
1242
1243 If the exponent is not an integer, the result is rightly NaNQ, so
1244 we just return that (as NV_NAN).
1245 */
1246
1247 if (left < 0.0) {
1248 NV mod2 = Perl_fmod( right, 2.0 );
1249 if (mod2 == 1.0 || mod2 == -1.0) { /* odd integer */
1250 SETn( -Perl_pow( -left, right) );
1251 } else if (mod2 == 0.0) { /* even integer */
1252 SETn( Perl_pow( -left, right) );
1253 } else { /* fractional power */
1254 SETn( NV_NAN );
1255 }
1256 } else {
1257 SETn( Perl_pow( left, right) );
1258 }
1259#else
52a96ae6 1260 SETn( Perl_pow( left, right) );
3aaeb624
JA
1261#endif /* HAS_AIX_POWL_NEG_BASE_BUG */
1262
52a96ae6
HS
1263#ifdef PERL_PRESERVE_IVUV
1264 if (is_int)
6f1401dc 1265 SvIV_please_nomg(svr);
52a96ae6
HS
1266#endif
1267 RETURN;
93a17b20 1268 }
a0d0e21e
LW
1269}
1270
1271PP(pp_multiply)
1272{
20b7effb 1273 dSP; dATARGET; SV *svl, *svr;
6f1401dc
DM
1274 tryAMAGICbin_MG(mult_amg, AMGf_assign|AMGf_numeric);
1275 svr = TOPs;
1276 svl = TOPm1s;
28e5dec8 1277#ifdef PERL_PRESERVE_IVUV
01f91bf2 1278 if (SvIV_please_nomg(svr)) {
28e5dec8
JH
1279 /* Unless the left argument is integer in range we are going to have to
1280 use NV maths. Hence only attempt to coerce the right argument if
1281 we know the left is integer. */
1282 /* Left operand is defined, so is it IV? */
01f91bf2 1283 if (SvIV_please_nomg(svl)) {
800401ee
JH
1284 bool auvok = SvUOK(svl);
1285 bool buvok = SvUOK(svr);
28e5dec8
JH
1286 const UV topmask = (~ (UV)0) << (4 * sizeof (UV));
1287 const UV botmask = ~((~ (UV)0) << (4 * sizeof (UV)));
1288 UV alow;
1289 UV ahigh;
1290 UV blow;
1291 UV bhigh;
1292
1293 if (auvok) {
800401ee 1294 alow = SvUVX(svl);
28e5dec8 1295 } else {
800401ee 1296 const IV aiv = SvIVX(svl);
28e5dec8
JH
1297 if (aiv >= 0) {
1298 alow = aiv;
1299 auvok = TRUE; /* effectively it's a UV now */
1300 } else {
53e2bfb7
DM
1301 /* abs, auvok == false records sign */
1302 alow = (aiv == IV_MIN) ? (UV)aiv : (UV)(-aiv);
28e5dec8
JH
1303 }
1304 }
1305 if (buvok) {
800401ee 1306 blow = SvUVX(svr);
28e5dec8 1307 } else {
800401ee 1308 const IV biv = SvIVX(svr);
28e5dec8
JH
1309 if (biv >= 0) {
1310 blow = biv;
1311 buvok = TRUE; /* effectively it's a UV now */
1312 } else {
53e2bfb7
DM
1313 /* abs, buvok == false records sign */
1314 blow = (biv == IV_MIN) ? (UV)biv : (UV)(-biv);
28e5dec8
JH
1315 }
1316 }
1317
1318 /* If this does sign extension on unsigned it's time for plan B */
1319 ahigh = alow >> (4 * sizeof (UV));
1320 alow &= botmask;
1321 bhigh = blow >> (4 * sizeof (UV));
1322 blow &= botmask;
1323 if (ahigh && bhigh) {
6f207bd3 1324 NOOP;
28e5dec8
JH
1325 /* eg 32 bit is at least 0x10000 * 0x10000 == 0x100000000
1326 which is overflow. Drop to NVs below. */
1327 } else if (!ahigh && !bhigh) {
1328 /* eg 32 bit is at most 0xFFFF * 0xFFFF == 0xFFFE0001
1329 so the unsigned multiply cannot overflow. */
c445ea15 1330 const UV product = alow * blow;
28e5dec8
JH
1331 if (auvok == buvok) {
1332 /* -ve * -ve or +ve * +ve gives a +ve result. */
1333 SP--;
1334 SETu( product );
1335 RETURN;
1336 } else if (product <= (UV)IV_MIN) {
1337 /* 2s complement assumption that (UV)-IV_MIN is correct. */
1338 /* -ve result, which could overflow an IV */
1339 SP--;
02b08bbc
DM
1340 /* can't negate IV_MIN, but there are aren't two
1341 * integers such that !ahigh && !bhigh, where the
1342 * product equals 0x800....000 */
1343 assert(product != (UV)IV_MIN);
25716404 1344 SETi( -(IV)product );
28e5dec8
JH
1345 RETURN;
1346 } /* else drop to NVs below. */
1347 } else {
1348 /* One operand is large, 1 small */
1349 UV product_middle;
1350 if (bhigh) {
1351 /* swap the operands */
1352 ahigh = bhigh;
1353 bhigh = blow; /* bhigh now the temp var for the swap */
1354 blow = alow;
1355 alow = bhigh;
1356 }
1357 /* now, ((ahigh * blow) << half_UV_len) + (alow * blow)
1358 multiplies can't overflow. shift can, add can, -ve can. */
1359 product_middle = ahigh * blow;
1360 if (!(product_middle & topmask)) {
1361 /* OK, (ahigh * blow) won't lose bits when we shift it. */
1362 UV product_low;
1363 product_middle <<= (4 * sizeof (UV));
1364 product_low = alow * blow;
1365
1366 /* as for pp_add, UV + something mustn't get smaller.
1367 IIRC ANSI mandates this wrapping *behaviour* for
1368 unsigned whatever the actual representation*/
1369 product_low += product_middle;
1370 if (product_low >= product_middle) {
1371 /* didn't overflow */
1372 if (auvok == buvok) {
1373 /* -ve * -ve or +ve * +ve gives a +ve result. */
1374 SP--;
1375 SETu( product_low );
1376 RETURN;
1377 } else if (product_low <= (UV)IV_MIN) {
1378 /* 2s complement assumption again */
1379 /* -ve result, which could overflow an IV */
1380 SP--;
53e2bfb7
DM
1381 SETi(product_low == (UV)IV_MIN
1382 ? IV_MIN : -(IV)product_low);
28e5dec8
JH
1383 RETURN;
1384 } /* else drop to NVs below. */
1385 }
1386 } /* product_middle too large */
1387 } /* ahigh && bhigh */
800401ee
JH
1388 } /* SvIOK(svl) */
1389 } /* SvIOK(svr) */
28e5dec8 1390#endif
a0d0e21e 1391 {
6f1401dc
DM
1392 NV right = SvNV_nomg(svr);
1393 NV left = SvNV_nomg(svl);
4efa5a16 1394 (void)POPs;
a0d0e21e
LW
1395 SETn( left * right );
1396 RETURN;
79072805 1397 }
a0d0e21e
LW
1398}
1399
1400PP(pp_divide)
1401{
20b7effb 1402 dSP; dATARGET; SV *svl, *svr;
6f1401dc
DM
1403 tryAMAGICbin_MG(div_amg, AMGf_assign|AMGf_numeric);
1404 svr = TOPs;
1405 svl = TOPm1s;
5479d192 1406 /* Only try to do UV divide first
68795e93 1407 if ((SLOPPYDIVIDE is true) or
5479d192
NC
1408 (PERL_PRESERVE_IVUV is true and one or both SV is a UV too large
1409 to preserve))
1410 The assumption is that it is better to use floating point divide
1411 whenever possible, only doing integer divide first if we can't be sure.
1412 If NV_PRESERVES_UV is true then we know at compile time that no UV
1413 can be too large to preserve, so don't need to compile the code to
1414 test the size of UVs. */
1415
a0d0e21e 1416#ifdef SLOPPYDIVIDE
5479d192
NC
1417# define PERL_TRY_UV_DIVIDE
1418 /* ensure that 20./5. == 4. */
a0d0e21e 1419#else
5479d192
NC
1420# ifdef PERL_PRESERVE_IVUV
1421# ifndef NV_PRESERVES_UV
1422# define PERL_TRY_UV_DIVIDE
1423# endif
1424# endif
a0d0e21e 1425#endif
5479d192
NC
1426
1427#ifdef PERL_TRY_UV_DIVIDE
01f91bf2 1428 if (SvIV_please_nomg(svr) && SvIV_please_nomg(svl)) {
800401ee
JH
1429 bool left_non_neg = SvUOK(svl);
1430 bool right_non_neg = SvUOK(svr);
5479d192
NC
1431 UV left;
1432 UV right;
1433
1434 if (right_non_neg) {
800401ee 1435 right = SvUVX(svr);
5479d192
NC
1436 }
1437 else {
800401ee 1438 const IV biv = SvIVX(svr);
5479d192
NC
1439 if (biv >= 0) {
1440 right = biv;
1441 right_non_neg = TRUE; /* effectively it's a UV now */
1442 }
1443 else {
02b08bbc 1444 right = (biv == IV_MIN) ? (UV)biv : (UV)(-biv);
5479d192
NC
1445 }
1446 }
1447 /* historically undef()/0 gives a "Use of uninitialized value"
1448 warning before dieing, hence this test goes here.
1449 If it were immediately before the second SvIV_please, then
1450 DIE() would be invoked before left was even inspected, so
486ec47a 1451 no inspection would give no warning. */
5479d192
NC
1452 if (right == 0)
1453 DIE(aTHX_ "Illegal division by zero");
1454
1455 if (left_non_neg) {
800401ee 1456 left = SvUVX(svl);
5479d192
NC
1457 }
1458 else {
800401ee 1459 const IV aiv = SvIVX(svl);
5479d192
NC
1460 if (aiv >= 0) {
1461 left = aiv;
1462 left_non_neg = TRUE; /* effectively it's a UV now */
1463 }
1464 else {
02b08bbc 1465 left = (aiv == IV_MIN) ? (UV)aiv : (UV)(-aiv);
5479d192
NC
1466 }
1467 }
1468
1469 if (left >= right
1470#ifdef SLOPPYDIVIDE
1471 /* For sloppy divide we always attempt integer division. */
1472#else
1473 /* Otherwise we only attempt it if either or both operands
1474 would not be preserved by an NV. If both fit in NVs
0c2ee62a
NC
1475 we fall through to the NV divide code below. However,
1476 as left >= right to ensure integer result here, we know that
1477 we can skip the test on the right operand - right big
1478 enough not to be preserved can't get here unless left is
1479 also too big. */
1480
1481 && (left > ((UV)1 << NV_PRESERVES_UV_BITS))
5479d192
NC
1482#endif
1483 ) {
1484 /* Integer division can't overflow, but it can be imprecise. */
1b6737cc 1485 const UV result = left / right;
5479d192
NC
1486 if (result * right == left) {
1487 SP--; /* result is valid */
1488 if (left_non_neg == right_non_neg) {
1489 /* signs identical, result is positive. */
1490 SETu( result );
1491 RETURN;
1492 }
1493 /* 2s complement assumption */
1494 if (result <= (UV)IV_MIN)
02b08bbc 1495 SETi(result == (UV)IV_MIN ? IV_MIN : -(IV)result);
5479d192
NC
1496 else {
1497 /* It's exact but too negative for IV. */
1498 SETn( -(NV)result );
1499 }
1500 RETURN;
1501 } /* tried integer divide but it was not an integer result */
32fdb065 1502 } /* else (PERL_ABS(result) < 1.0) or (both UVs in range for NV) */
01f91bf2 1503 } /* one operand wasn't SvIOK */
5479d192
NC
1504#endif /* PERL_TRY_UV_DIVIDE */
1505 {
6f1401dc
DM
1506 NV right = SvNV_nomg(svr);
1507 NV left = SvNV_nomg(svl);
4efa5a16 1508 (void)POPs;(void)POPs;
ebc6a117
PD
1509#if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
1510 if (! Perl_isnan(right) && right == 0.0)
1511#else
659c4b96 1512 if (right == 0.0)
ebc6a117 1513#endif
5479d192
NC
1514 DIE(aTHX_ "Illegal division by zero");
1515 PUSHn( left / right );
1516 RETURN;
79072805 1517 }
a0d0e21e
LW
1518}
1519
1520PP(pp_modulo)
1521{
20b7effb 1522 dSP; dATARGET;
6f1401dc 1523 tryAMAGICbin_MG(modulo_amg, AMGf_assign|AMGf_numeric);
a0d0e21e 1524 {
9c5ffd7c
JH
1525 UV left = 0;
1526 UV right = 0;
dc656993
JH
1527 bool left_neg = FALSE;
1528 bool right_neg = FALSE;
e2c88acc
NC
1529 bool use_double = FALSE;
1530 bool dright_valid = FALSE;
9c5ffd7c
JH
1531 NV dright = 0.0;
1532 NV dleft = 0.0;
6f1401dc
DM
1533 SV * const svr = TOPs;
1534 SV * const svl = TOPm1s;
01f91bf2 1535 if (SvIV_please_nomg(svr)) {
800401ee 1536 right_neg = !SvUOK(svr);
e2c88acc 1537 if (!right_neg) {
800401ee 1538 right = SvUVX(svr);
e2c88acc 1539 } else {
800401ee 1540 const IV biv = SvIVX(svr);
e2c88acc
NC
1541 if (biv >= 0) {
1542 right = biv;
1543 right_neg = FALSE; /* effectively it's a UV now */
1544 } else {
02b08bbc 1545 right = (biv == IV_MIN) ? (UV)biv : (UV)(-biv);
e2c88acc
NC
1546 }
1547 }
1548 }
1549 else {
6f1401dc 1550 dright = SvNV_nomg(svr);
787eafbd
IZ
1551 right_neg = dright < 0;
1552 if (right_neg)
1553 dright = -dright;
e2c88acc
NC
1554 if (dright < UV_MAX_P1) {
1555 right = U_V(dright);
1556 dright_valid = TRUE; /* In case we need to use double below. */
1557 } else {
1558 use_double = TRUE;
1559 }
787eafbd 1560 }
a0d0e21e 1561
e2c88acc
NC
1562 /* At this point use_double is only true if right is out of range for
1563 a UV. In range NV has been rounded down to nearest UV and
1564 use_double false. */
01f91bf2 1565 if (!use_double && SvIV_please_nomg(svl)) {
800401ee 1566 left_neg = !SvUOK(svl);
e2c88acc 1567 if (!left_neg) {
800401ee 1568 left = SvUVX(svl);
e2c88acc 1569 } else {
800401ee 1570 const IV aiv = SvIVX(svl);
e2c88acc
NC
1571 if (aiv >= 0) {
1572 left = aiv;
1573 left_neg = FALSE; /* effectively it's a UV now */
1574 } else {
02b08bbc 1575 left = (aiv == IV_MIN) ? (UV)aiv : (UV)(-aiv);
e2c88acc
NC
1576 }
1577 }
e2c88acc 1578 }
787eafbd 1579 else {
6f1401dc 1580 dleft = SvNV_nomg(svl);
787eafbd
IZ
1581 left_neg = dleft < 0;
1582 if (left_neg)
1583 dleft = -dleft;
68dc0745 1584
e2c88acc
NC
1585 /* This should be exactly the 5.6 behaviour - if left and right are
1586 both in range for UV then use U_V() rather than floor. */
1587 if (!use_double) {
1588 if (dleft < UV_MAX_P1) {
1589 /* right was in range, so is dleft, so use UVs not double.
1590 */
1591 left = U_V(dleft);
1592 }
1593 /* left is out of range for UV, right was in range, so promote
1594 right (back) to double. */
1595 else {
1596 /* The +0.5 is used in 5.6 even though it is not strictly
1597 consistent with the implicit +0 floor in the U_V()
1598 inside the #if 1. */
1599 dleft = Perl_floor(dleft + 0.5);
1600 use_double = TRUE;
1601 if (dright_valid)
1602 dright = Perl_floor(dright + 0.5);
1603 else
1604 dright = right;
1605 }
1606 }
1607 }
6f1401dc 1608 sp -= 2;
787eafbd 1609 if (use_double) {
65202027 1610 NV dans;
787eafbd 1611
659c4b96 1612 if (!dright)
cea2e8a9 1613 DIE(aTHX_ "Illegal modulus zero");
787eafbd 1614
65202027 1615 dans = Perl_fmod(dleft, dright);
659c4b96 1616 if ((left_neg != right_neg) && dans)
787eafbd
IZ
1617 dans = dright - dans;
1618 if (right_neg)
1619 dans = -dans;
1620 sv_setnv(TARG, dans);
1621 }
1622 else {
1623 UV ans;
1624
787eafbd 1625 if (!right)
cea2e8a9 1626 DIE(aTHX_ "Illegal modulus zero");
787eafbd
IZ
1627
1628 ans = left % right;
1629 if ((left_neg != right_neg) && ans)
1630 ans = right - ans;
1631 if (right_neg) {
1632 /* XXX may warn: unary minus operator applied to unsigned type */
1633 /* could change -foo to be (~foo)+1 instead */
1634 if (ans <= ~((UV)IV_MAX)+1)
1635 sv_setiv(TARG, ~ans+1);
1636 else
65202027 1637 sv_setnv(TARG, -(NV)ans);
787eafbd
IZ
1638 }
1639 else
1640 sv_setuv(TARG, ans);
1641 }
1642 PUSHTARG;
1643 RETURN;
79072805 1644 }
a0d0e21e 1645}
79072805 1646
a0d0e21e
LW
1647PP(pp_repeat)
1648{
20b7effb 1649 dSP; dATARGET;
eb578fdb 1650 IV count;
6f1401dc 1651 SV *sv;
02a7a248 1652 bool infnan = FALSE;
6f1401dc 1653
82334630 1654 if (GIMME_V == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) {
6f1401dc
DM
1655 /* TODO: think of some way of doing list-repeat overloading ??? */
1656 sv = POPs;
1657 SvGETMAGIC(sv);
1658 }
1659 else {
3a100dab
FC
1660 if (UNLIKELY(PL_op->op_private & OPpREPEAT_DOLIST)) {
1661 /* The parser saw this as a list repeat, and there
1662 are probably several items on the stack. But we're
1663 in scalar/void context, and there's no pp_list to save us
1664 now. So drop the rest of the items -- robin@kitsite.com
1665 */
1666 dMARK;
1667 if (MARK + 1 < SP) {
1668 MARK[1] = TOPm1s;
1669 MARK[2] = TOPs;
1670 }
1671 else {
1672 dTOPss;
1673 ASSUME(MARK + 1 == SP);
1674 XPUSHs(sv);
1675 MARK[1] = &PL_sv_undef;
1676 }
1677 SP = MARK + 2;
1678 }
6f1401dc
DM
1679 tryAMAGICbin_MG(repeat_amg, AMGf_assign);
1680 sv = POPs;
1681 }
1682
2b573ace
JH
1683 if (SvIOKp(sv)) {
1684 if (SvUOK(sv)) {
6f1401dc 1685 const UV uv = SvUV_nomg(sv);
2b573ace
JH
1686 if (uv > IV_MAX)
1687 count = IV_MAX; /* The best we can do? */
1688 else
1689 count = uv;
1690 } else {
b3211734 1691 count = SvIV_nomg(sv);
2b573ace
JH
1692 }
1693 }
1694 else if (SvNOKp(sv)) {
02a7a248
JH
1695 const NV nv = SvNV_nomg(sv);
1696 infnan = Perl_isinfnan(nv);
1697 if (UNLIKELY(infnan)) {
1698 count = 0;
1699 } else {
1700 if (nv < 0.0)
1701 count = -1; /* An arbitrary negative integer */
1702 else
1703 count = (IV)nv;
1704 }
2b573ace
JH
1705 }
1706 else
02a7a248 1707 count = SvIV_nomg(sv);
6f1401dc 1708
02a7a248
JH
1709 if (infnan) {
1710 Perl_ck_warner(aTHX_ packWARN(WARN_NUMERIC),
1711 "Non-finite repeat count does nothing");
1712 } else if (count < 0) {
b3211734
KW
1713 count = 0;
1714 Perl_ck_warner(aTHX_ packWARN(WARN_NUMERIC),
02a7a248 1715 "Negative repeat count does nothing");
b3211734
KW
1716 }
1717
82334630 1718 if (GIMME_V == G_ARRAY && PL_op->op_private & OPpREPEAT_DOLIST) {
a0d0e21e 1719 dMARK;
b3b27d01 1720 const Size_t items = SP - MARK;
da9e430b 1721 const U8 mod = PL_op->op_flags & OPf_MOD;
79072805 1722
a0d0e21e 1723 if (count > 1) {
b3b27d01
DM
1724 Size_t max;
1725
1726 if ( items > MEM_SIZE_MAX / (UV)count /* max would overflow */
1727 || items > (U32)I32_MAX / sizeof(SV *) /* repeatcpy would overflow */
1728 )
1729 Perl_croak(aTHX_ "%s","Out of memory during list extend");
1730 max = items * count;
1731 MEXTEND(MARK, max);
1732
a0d0e21e 1733 while (SP > MARK) {
60779a30
DM
1734 if (*SP) {
1735 if (mod && SvPADTMP(*SP)) {
da9e430b 1736 *SP = sv_mortalcopy(*SP);
60779a30 1737 }
976c8a39 1738 SvTEMP_off((*SP));
da9e430b 1739 }
a0d0e21e 1740 SP--;
79072805 1741 }
a0d0e21e
LW
1742 MARK++;
1743 repeatcpy((char*)(MARK + items), (char*)MARK,
ad64d0ec 1744 items * sizeof(const SV *), count - 1);
a0d0e21e 1745 SP += max;
79072805 1746 }
a0d0e21e
LW
1747 else if (count <= 0)
1748 SP -= items;
79072805 1749 }
a0d0e21e 1750 else { /* Note: mark already snarfed by pp_list */
0bd48802 1751 SV * const tmpstr = POPs;
a0d0e21e 1752 STRLEN len;
9b877dbb 1753 bool isutf;
a0d0e21e 1754
6f1401dc
DM
1755 if (TARG != tmpstr)
1756 sv_setsv_nomg(TARG, tmpstr);
1757 SvPV_force_nomg(TARG, len);
9b877dbb 1758 isutf = DO_UTF8(TARG);
8ebc5c01
PP
1759 if (count != 1) {
1760 if (count < 1)
1761 SvCUR_set(TARG, 0);
1762 else {
b3b27d01
DM
1763 STRLEN max;
1764
1765 if ( len > (MEM_SIZE_MAX-1) / (UV)count /* max would overflow */
1766 || len > (U32)I32_MAX /* repeatcpy would overflow */
1767 )
1768 Perl_croak(aTHX_ "%s",
1769 "Out of memory during string extend");
1770 max = (UV)count * len + 1;
1771 SvGROW(TARG, max);
1772
a0d0e21e 1773 repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1);
b162af07 1774 SvCUR_set(TARG, SvCUR(TARG) * count);
7a4c00b4 1775 }
a0d0e21e 1776 *SvEND(TARG) = '\0';
a0d0e21e 1777 }
dfcb284a
GS
1778 if (isutf)
1779 (void)SvPOK_only_UTF8(TARG);
1780 else
1781 (void)SvPOK_only(TARG);
b80b6069 1782
a0d0e21e 1783 PUSHTARG;
79072805 1784 }
a0d0e21e
LW
1785 RETURN;
1786}
79072805 1787
a0d0e21e
LW
1788PP(pp_subtract)
1789{
20b7effb 1790 dSP; dATARGET; bool useleft; SV *svl, *svr;
6f1401dc
DM
1791 tryAMAGICbin_MG(subtr_amg, AMGf_assign|AMGf_numeric);
1792 svr = TOPs;
1793 svl = TOPm1s;
800401ee 1794 useleft = USE_LEFT(svl);
28e5dec8 1795#ifdef PERL_PRESERVE_IVUV
7dca457a
NC
1796 /* See comments in pp_add (in pp_hot.c) about Overflow, and how
1797 "bad things" happen if you rely on signed integers wrapping. */
01f91bf2 1798 if (SvIV_please_nomg(svr)) {
28e5dec8
JH
1799 /* Unless the left argument is integer in range we are going to have to
1800 use NV maths. Hence only attempt to coerce the right argument if
1801 we know the left is integer. */
eb578fdb 1802 UV auv = 0;
9c5ffd7c 1803 bool auvok = FALSE;
7dca457a
NC
1804 bool a_valid = 0;
1805
28e5dec8 1806 if (!useleft) {
7dca457a
NC
1807 auv = 0;
1808 a_valid = auvok = 1;
1809 /* left operand is undef, treat as zero. */
28e5dec8
JH
1810 } else {
1811 /* Left operand is defined, so is it IV? */
01f91bf2 1812 if (SvIV_please_nomg(svl)) {
800401ee
JH
1813 if ((auvok = SvUOK(svl)))
1814 auv = SvUVX(svl);
7dca457a 1815 else {
eb578fdb 1816 const IV aiv = SvIVX(svl);
7dca457a
NC
1817 if (aiv >= 0) {
1818 auv = aiv;
1819 auvok = 1; /* Now acting as a sign flag. */
1820 } else { /* 2s complement assumption for IV_MIN */
53e2bfb7 1821 auv = (aiv == IV_MIN) ? (UV)aiv : (UV)-aiv;
28e5dec8 1822 }
7dca457a
NC
1823 }
1824 a_valid = 1;
1825 }
1826 }
1827 if (a_valid) {
1828 bool result_good = 0;
1829 UV result;
eb578fdb 1830 UV buv;
800401ee 1831 bool buvok = SvUOK(svr);
9041c2e3 1832
7dca457a 1833 if (buvok)
800401ee 1834 buv = SvUVX(svr);
7dca457a 1835 else {
eb578fdb 1836 const IV biv = SvIVX(svr);
7dca457a
NC
1837 if (biv >= 0) {
1838 buv = biv;
1839 buvok = 1;
1840 } else
53e2bfb7 1841 buv = (biv == IV_MIN) ? (UV)biv : (UV)-biv;
7dca457a
NC
1842 }
1843 /* ?uvok if value is >= 0. basically, flagged as UV if it's +ve,
602f51c4 1844 else "IV" now, independent of how it came in.
7dca457a
NC
1845 if a, b represents positive, A, B negative, a maps to -A etc
1846 a - b => (a - b)
1847 A - b => -(a + b)
1848 a - B => (a + b)
1849 A - B => -(a - b)
1850 all UV maths. negate result if A negative.
1851 subtract if signs same, add if signs differ. */
1852
1853 if (auvok ^ buvok) {
1854 /* Signs differ. */
1855 result = auv + buv;
1856 if (result >= auv)
1857 result_good = 1;
1858 } else {
1859 /* Signs same */
1860 if (auv >= buv) {
1861 result = auv - buv;
1862 /* Must get smaller */
1863 if (result <= auv)
1864 result_good = 1;
1865 } else {
1866 result = buv - auv;
1867 if (result <= buv) {
1868 /* result really should be -(auv-buv). as its negation
1869 of true value, need to swap our result flag */
1870 auvok = !auvok;
1871 result_good = 1;
28e5dec8 1872 }
28e5dec8
JH
1873 }
1874 }
7dca457a
NC
1875 if (result_good) {
1876 SP--;
1877 if (auvok)
1878 SETu( result );
1879 else {
1880 /* Negate result */
1881 if (result <= (UV)IV_MIN)
53e2bfb7
DM
1882 SETi(result == (UV)IV_MIN
1883 ? IV_MIN : -(IV)result);
7dca457a
NC
1884 else {
1885 /* result valid, but out of range for IV. */
1886 SETn( -(NV)result );
1887 }
1888 }
1889 RETURN;
1890 } /* Overflow, drop through to NVs. */
28e5dec8
JH
1891 }
1892 }
1893#endif
a0d0e21e 1894 {
6f1401dc 1895 NV value = SvNV_nomg(svr);
4efa5a16
RD
1896 (void)POPs;
1897
28e5dec8
JH
1898 if (!useleft) {
1899 /* left operand is undef, treat as zero - value */
1900 SETn(-value);
1901 RETURN;
1902 }
6f1401dc 1903 SETn( SvNV_nomg(svl) - value );
28e5dec8 1904 RETURN;
79072805 1905 }
a0d0e21e 1906}
79072805 1907
b3498293
JH
1908#define IV_BITS (IVSIZE * 8)
1909
1910static UV S_uv_shift(UV uv, int shift, bool left)
1911{
1912 if (shift < 0) {
1913 shift = -shift;
1914 left = !left;
1915 }
1916 if (shift >= IV_BITS) {
1917 return 0;
1918 }
1919 return left ? uv << shift : uv >> shift;
1920}
1921
1922static IV S_iv_shift(IV iv, int shift, bool left)
1923{
1924 if (shift < 0) {
1925 shift = -shift;
1926 left = !left;
1927 }
1928 if (shift >= IV_BITS) {
b69687e7 1929 return iv < 0 && !left ? -1 : 0;
b3498293
JH
1930 }
1931 return left ? iv << shift : iv >> shift;
1932}
1933
1934#define UV_LEFT_SHIFT(uv, shift) S_uv_shift(uv, shift, TRUE)
1935#define UV_RIGHT_SHIFT(uv, shift) S_uv_shift(uv, shift, FALSE)
1936#define IV_LEFT_SHIFT(iv, shift) S_iv_shift(iv, shift, TRUE)
1937#define IV_RIGHT_SHIFT(iv, shift) S_iv_shift(iv, shift, FALSE)
1938
a0d0e21e
LW
1939PP(pp_left_shift)
1940{
20b7effb 1941 dSP; dATARGET; SV *svl, *svr;
a42d0242 1942 tryAMAGICbin_MG(lshift_amg, AMGf_assign|AMGf_numeric);
6f1401dc
DM
1943 svr = POPs;
1944 svl = TOPs;
a0d0e21e 1945 {
6f1401dc 1946 const IV shift = SvIV_nomg(svr);
d0ba1bd2 1947 if (PL_op->op_private & HINT_INTEGER) {
b3498293 1948 SETi(IV_LEFT_SHIFT(SvIV_nomg(svl), shift));
d0ba1bd2
JH
1949 }
1950 else {
b3498293 1951 SETu(UV_LEFT_SHIFT(SvUV_nomg(svl), shift));
d0ba1bd2 1952 }
55497cff 1953 RETURN;
79072805 1954 }
a0d0e21e 1955}
79072805 1956
a0d0e21e
LW
1957PP(pp_right_shift)
1958{
20b7effb 1959 dSP; dATARGET; SV *svl, *svr;
a42d0242 1960 tryAMAGICbin_MG(rshift_amg, AMGf_assign|AMGf_numeric);
6f1401dc
DM
1961 svr = POPs;
1962 svl = TOPs;
a0d0e21e 1963 {
6f1401dc 1964 const IV shift = SvIV_nomg(svr);
d0ba1bd2 1965 if (PL_op->op_private & HINT_INTEGER) {
b3498293 1966 SETi(IV_RIGHT_SHIFT(SvIV_nomg(svl), shift));
d0ba1bd2
JH
1967 }
1968 else {
b3498293 1969 SETu(UV_RIGHT_SHIFT(SvUV_nomg(svl), shift));
d0ba1bd2 1970 }
a0d0e21e 1971 RETURN;
93a17b20 1972 }
79072805
LW
1973}
1974
a0d0e21e 1975PP(pp_lt)
79072805 1976{
20b7effb 1977 dSP;
33efebe6
DM
1978 SV *left, *right;
1979
a42d0242 1980 tryAMAGICbin_MG(lt_amg, AMGf_set|AMGf_numeric);
33efebe6
DM
1981 right = POPs;
1982 left = TOPs;
1983 SETs(boolSV(
1984 (SvIOK_notUV(left) && SvIOK_notUV(right))
1985 ? (SvIVX(left) < SvIVX(right))
1986 : (do_ncmp(left, right) == -1)
1987 ));
1988 RETURN;
a0d0e21e 1989}
79072805 1990
a0d0e21e
LW
1991PP(pp_gt)
1992{
20b7effb 1993 dSP;
33efebe6 1994 SV *left, *right;
1b6737cc 1995
33efebe6
DM
1996 tryAMAGICbin_MG(gt_amg, AMGf_set|AMGf_numeric);
1997 right = POPs;
1998 left = TOPs;
1999 SETs(boolSV(
2000 (SvIOK_notUV(left) && SvIOK_notUV(right))
2001 ? (SvIVX(left) > SvIVX(right))
2002 : (do_ncmp(left, right) == 1)
2003 ));
2004 RETURN;
a0d0e21e
LW
2005}
2006
2007PP(pp_le)
2008{
20b7effb 2009 dSP;
33efebe6 2010 SV *left, *right;
1b6737cc 2011
33efebe6
DM
2012 tryAMAGICbin_MG(le_amg, AMGf_set|AMGf_numeric);
2013 right = POPs;
2014 left = TOPs;
2015 SETs(boolSV(
2016 (SvIOK_notUV(left) && SvIOK_notUV(right))
2017 ? (SvIVX(left) <= SvIVX(right))
2018 : (do_ncmp(left, right) <= 0)
2019 ));
2020 RETURN;
a0d0e21e
LW
2021}
2022
2023PP(pp_ge)
2024{
20b7effb 2025 dSP;
33efebe6
DM
2026 SV *left, *right;
2027
2028 tryAMAGICbin_MG(ge_amg, AMGf_set|AMGf_numeric);
2029 right = POPs;
2030 left = TOPs;
2031 SETs(boolSV(
2032 (SvIOK_notUV(left) && SvIOK_notUV(right))
2033 ? (SvIVX(left) >= SvIVX(right))
2034 : ( (do_ncmp(left, right) & 2) == 0)
2035 ));
2036 RETURN;
2037}
1b6737cc 2038
33efebe6
DM
2039PP(pp_ne)
2040{
20b7effb 2041 dSP;
33efebe6
DM
2042 SV *left, *right;
2043
2044 tryAMAGICbin_MG(ne_amg, AMGf_set|AMGf_numeric);
2045 right = POPs;
2046 left = TOPs;
2047 SETs(boolSV(
2048 (SvIOK_notUV(left) && SvIOK_notUV(right))
2049 ? (SvIVX(left) != SvIVX(right))
2050 : (do_ncmp(left, right) != 0)
2051 ));
2052 RETURN;
2053}
1b6737cc 2054
33efebe6
DM
2055/* compare left and right SVs. Returns:
2056 * -1: <
2057 * 0: ==
2058 * 1: >
2059 * 2: left or right was a NaN
2060 */
2061I32
2062Perl_do_ncmp(pTHX_ SV* const left, SV * const right)
2063{
33efebe6
DM
2064 PERL_ARGS_ASSERT_DO_NCMP;
2065#ifdef PERL_PRESERVE_IVUV
33efebe6 2066 /* Fortunately it seems NaN isn't IOK */
01f91bf2 2067 if (SvIV_please_nomg(right) && SvIV_please_nomg(left)) {
33efebe6
DM
2068 if (!SvUOK(left)) {
2069 const IV leftiv = SvIVX(left);
2070 if (!SvUOK(right)) {
2071 /* ## IV <=> IV ## */
2072 const IV rightiv = SvIVX(right);
2073 return (leftiv > rightiv) - (leftiv < rightiv);
28e5dec8 2074 }
33efebe6
DM
2075 /* ## IV <=> UV ## */
2076 if (leftiv < 0)
2077 /* As (b) is a UV, it's >=0, so it must be < */
2078 return -1;
2079 {
2080 const UV rightuv = SvUVX(right);
2081 return ((UV)leftiv > rightuv) - ((UV)leftiv < rightuv);
28e5dec8 2082 }
28e5dec8 2083 }
79072805 2084
33efebe6
DM
2085 if (SvUOK(right)) {
2086 /* ## UV <=> UV ## */
2087 const UV leftuv = SvUVX(left);
2088 const UV rightuv = SvUVX(right);
2089 return (leftuv > rightuv) - (leftuv < rightuv);
28e5dec8 2090 }
33efebe6
DM
2091 /* ## UV <=> IV ## */
2092 {
2093 const IV rightiv = SvIVX(right);
2094 if (rightiv < 0)
2095 /* As (a) is a UV, it's >=0, so it cannot be < */
2096 return 1;
2097 {
2098 const UV leftuv = SvUVX(left);
2099 return (leftuv > (UV)rightiv) - (leftuv < (UV)rightiv);
28e5dec8 2100 }
28e5dec8 2101 }
e5964223 2102 NOT_REACHED; /* NOTREACHED */
28e5dec8
JH
2103 }
2104#endif
a0d0e21e 2105 {
33efebe6
DM
2106 NV const rnv = SvNV_nomg(right);
2107 NV const lnv = SvNV_nomg(left);
2108
cab190d4 2109#if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
33efebe6
DM
2110 if (Perl_isnan(lnv) || Perl_isnan(rnv)) {
2111 return 2;
2112 }
2113 return (lnv > rnv) - (lnv < rnv);
cab190d4 2114#else
33efebe6
DM
2115 if (lnv < rnv)
2116 return -1;
2117 if (lnv > rnv)
2118 return 1;
659c4b96 2119 if (lnv == rnv)
33efebe6
DM
2120 return 0;
2121 return 2;
cab190d4 2122#endif
a0d0e21e 2123 }
79072805
LW
2124}
2125
33efebe6 2126
a0d0e21e 2127PP(pp_ncmp)
79072805 2128{
20b7effb 2129 dSP;
33efebe6
DM
2130 SV *left, *right;
2131 I32 value;
a42d0242 2132 tryAMAGICbin_MG(ncmp_amg, AMGf_numeric);
33efebe6
DM
2133 right = POPs;
2134 left = TOPs;
2135 value = do_ncmp(left, right);
2136 if (value == 2) {
3280af22 2137 SETs(&PL_sv_undef);
79072805 2138 }
33efebe6
DM
2139 else {
2140 dTARGET;
2141 SETi(value);
2142 }
2143 RETURN;
a0d0e21e 2144}
79072805 2145
b1c05ba5
DM
2146
2147/* also used for: pp_sge() pp_sgt() pp_slt() */
2148
afd9910b 2149PP(pp_sle)
a0d0e21e 2150{
20b7effb 2151 dSP;
79072805 2152
afd9910b
NC
2153 int amg_type = sle_amg;
2154 int multiplier = 1;
2155 int rhs = 1;
79072805 2156
afd9910b
NC
2157 switch (PL_op->op_type) {
2158 case OP_SLT:
2159 amg_type = slt_amg;
2160 /* cmp < 0 */
2161 rhs = 0;
2162 break;
2163 case OP_SGT:
2164 amg_type = sgt_amg;
2165 /* cmp > 0 */
2166 multiplier = -1;
2167 rhs = 0;
2168 break;
2169 case OP_SGE:
2170 amg_type = sge_amg;
2171 /* cmp >= 0 */
2172 multiplier = -1;
2173 break;
79072805 2174 }
79072805 2175
6f1401dc 2176 tryAMAGICbin_MG(amg_type, AMGf_set);
a0d0e21e
LW
2177 {
2178 dPOPTOPssrl;
130c5df3 2179 const int cmp =
5778acb6 2180#ifdef USE_LOCALE_COLLATE
130c5df3
KW
2181 (IN_LC_RUNTIME(LC_COLLATE))
2182 ? sv_cmp_locale_flags(left, right, 0)
2183 :
2184#endif
2185 sv_cmp_flags(left, right, 0);
afd9910b 2186 SETs(boolSV(cmp * multiplier < rhs));
a0d0e21e
LW
2187 RETURN;
2188 }
2189}
79072805 2190
36477c24
PP
2191PP(pp_seq)
2192{
20b7effb 2193 dSP;
6f1401dc 2194 tryAMAGICbin_MG(seq_amg, AMGf_set);
36477c24
PP
2195 {
2196 dPOPTOPssrl;
078504b2 2197 SETs(boolSV(sv_eq_flags(left, right, 0)));
a0d0e21e
LW
2198 RETURN;
2199 }
2200}
79072805 2201
a0d0e21e 2202PP(pp_sne)
79072805 2203{
20b7effb 2204 dSP;
6f1401dc 2205 tryAMAGICbin_MG(sne_amg, AMGf_set);
a0d0e21e
LW
2206 {
2207 dPOPTOPssrl;
078504b2 2208 SETs(boolSV(!sv_eq_flags(left, right, 0)));
a0d0e21e 2209 RETURN;
463ee0b2 2210 }
79072805
LW
2211}
2212
a0d0e21e 2213PP(pp_scmp)
79072805 2214{
20b7effb 2215 dSP; dTARGET;
6f1401dc 2216 tryAMAGICbin_MG(scmp_amg, 0);
a0d0e21e
LW
2217 {
2218 dPOPTOPssrl;
130c5df3 2219 const int cmp =
5778acb6 2220#ifdef USE_LOCALE_COLLATE
130c5df3
KW
2221 (IN_LC_RUNTIME(LC_COLLATE))
2222 ? sv_cmp_locale_flags(left, right, 0)
2223 :
2224#endif
2225 sv_cmp_flags(left, right, 0);
bbce6d69 2226 SETi( cmp );
a0d0e21e
LW
2227 RETURN;
2228 }
2229}
79072805 2230
55497cff
PP
2231PP(pp_bit_and)
2232{
20b7effb 2233 dSP; dATARGET;
6f1401dc 2234 tryAMAGICbin_MG(band_amg, AMGf_assign);
a0d0e21e
LW
2235 {
2236 dPOPTOPssrl;
4633a7c4 2237 if (SvNIOKp(left) || SvNIOKp(right)) {
b20c4ee1
FC
2238 const bool left_ro_nonnum = !SvNIOKp(left) && SvREADONLY(left);
2239 const bool right_ro_nonnum = !SvNIOKp(right) && SvREADONLY(right);
d0ba1bd2 2240 if (PL_op->op_private & HINT_INTEGER) {
1b6737cc 2241 const IV i = SvIV_nomg(left) & SvIV_nomg(right);
972b05a9 2242 SETi(i);
d0ba1bd2
JH
2243 }
2244 else {
1b6737cc 2245 const UV u = SvUV_nomg(left) & SvUV_nomg(right);
972b05a9 2246 SETu(u);
d0ba1bd2 2247 }
5ee80e13 2248 if (left_ro_nonnum && left != TARG) SvNIOK_off(left);
b20c4ee1 2249 if (right_ro_nonnum) SvNIOK_off(right);
a0d0e21e
LW
2250 }
2251 else {
533c011a 2252 do_vop(PL_op->op_type, TARG, left, right);
a0d0e21e
LW
2253 SETTARG;
2254 }
2255 RETURN;
2256 }
2257}
79072805 2258
5d01050a
FC
2259PP(pp_nbit_and)
2260{
2261 dSP;
636ac8fc 2262 tryAMAGICbin_MG(band_amg, AMGf_assign|AMGf_numarg);
5d01050a
FC
2263 {
2264 dATARGET; dPOPTOPssrl;
2265 if (PL_op->op_private & HINT_INTEGER) {
2266 const IV i = SvIV_nomg(left) & SvIV_nomg(right);
2267 SETi(i);
2268 }
2269 else {
2270 const UV u = SvUV_nomg(left) & SvUV_nomg(right);
2271 SETu(u);
2272 }
2273 }
2274 RETURN;
2275}
2276
2277PP(pp_sbit_and)
2278{
2279 dSP;
2280 tryAMAGICbin_MG(sband_amg, AMGf_assign);
2281 {
2282 dATARGET; dPOPTOPssrl;
2283 do_vop(OP_BIT_AND, TARG, left, right);
2284 RETSETTARG;
2285 }
2286}
b1c05ba5
DM
2287
2288/* also used for: pp_bit_xor() */
2289
a0d0e21e
LW
2290PP(pp_bit_or)
2291{
20b7effb 2292 dSP; dATARGET;
3658c1f1
NC
2293 const int op_type = PL_op->op_type;
2294
6f1401dc 2295 tryAMAGICbin_MG((op_type == OP_BIT_OR ? bor_amg : bxor_amg), AMGf_assign);
a0d0e21e
LW
2296 {
2297 dPOPTOPssrl;
4633a7c4 2298 if (SvNIOKp(left) || SvNIOKp(right)) {
b20c4ee1
FC
2299 const bool left_ro_nonnum = !SvNIOKp(left) && SvREADONLY(left);
2300 const bool right_ro_nonnum = !SvNIOKp(right) && SvREADONLY(right);
d0ba1bd2 2301 if (PL_op->op_private & HINT_INTEGER) {
3658c1f1
NC
2302 const IV l = (USE_LEFT(left) ? SvIV_nomg(left) : 0);
2303 const IV r = SvIV_nomg(right);
2304 const IV result = op_type == OP_BIT_OR ? (l | r) : (l ^ r);
2305 SETi(result);
d0ba1bd2
JH
2306 }
2307 else {
3658c1f1
NC
2308 const UV l = (USE_LEFT(left) ? SvUV_nomg(left) : 0);
2309 const UV r = SvUV_nomg(right);
2310 const UV result = op_type == OP_BIT_OR ? (l | r) : (l ^ r);
2311 SETu(result);
d0ba1bd2 2312 }
5ee80e13 2313 if (left_ro_nonnum && left != TARG) SvNIOK_off(left);
b20c4ee1 2314 if (right_ro_nonnum) SvNIOK_off(right);
a0d0e21e
LW
2315 }
2316 else {
3658c1f1 2317 do_vop(op_type, TARG, left, right);
a0d0e21e
LW
2318 SETTARG;
2319 }
2320 RETURN;
79072805 2321 }
a0d0e21e 2322}
79072805 2323
5d01050a
FC
2324/* also used for: pp_nbit_xor() */
2325
2326PP(pp_nbit_or)
2327{
2328 dSP;
2329 const int op_type = PL_op->op_type;
2330
2331 tryAMAGICbin_MG((op_type == OP_NBIT_OR ? bor_amg : bxor_amg),
636ac8fc 2332 AMGf_assign|AMGf_numarg);
5d01050a
FC
2333 {
2334 dATARGET; dPOPTOPssrl;
2335 if (PL_op->op_private & HINT_INTEGER) {
2336 const IV l = (USE_LEFT(left) ? SvIV_nomg(left) : 0);
2337 const IV r = SvIV_nomg(right);
2338 const IV result = op_type == OP_NBIT_OR ? (l | r) : (l ^ r);
2339 SETi(result);
2340 }
2341 else {
2342 const UV l = (USE_LEFT(left) ? SvUV_nomg(left) : 0);
2343 const UV r = SvUV_nomg(right);
2344 const UV result = op_type == OP_NBIT_OR ? (l | r) : (l ^ r);
2345 SETu(result);
2346 }
2347 }
2348 RETURN;
2349}
2350
2351/* also used for: pp_sbit_xor() */
2352
2353PP(pp_sbit_or)
2354{
2355 dSP;
2356 const int op_type = PL_op->op_type;
2357
2358 tryAMAGICbin_MG((op_type == OP_SBIT_OR ? sbor_amg : sbxor_amg),
2359 AMGf_assign);
2360 {
2361 dATARGET; dPOPTOPssrl;
2362 do_vop(op_type == OP_SBIT_OR ? OP_BIT_OR : OP_BIT_XOR, TARG, left,
2363 right);
2364 RETSETTARG;
2365 }
2366}
2367
1c2b3fd6
FC
2368PERL_STATIC_INLINE bool
2369S_negate_string(pTHX)
2370{
2371 dTARGET; dSP;
2372 STRLEN len;
2373 const char *s;
2374 SV * const sv = TOPs;
2375 if (!SvPOKp(sv) || SvNIOK(sv) || (!SvPOK(sv) && SvNIOKp(sv)))
2376 return FALSE;
2377 s = SvPV_nomg_const(sv, len);
2378 if (isIDFIRST(*s)) {
2379 sv_setpvs(TARG, "-");
2380 sv_catsv(TARG, sv);
2381 }
2382 else if (*s == '+' || (*s == '-' && !looks_like_number(sv))) {
2383 sv_setsv_nomg(TARG, sv);
2384 *SvPV_force_nomg(TARG, len) = *s == '-' ? '+' : '-';
2385 }
2386 else return FALSE;
245d035e 2387 SETTARG;
1c2b3fd6
FC
2388 return TRUE;
2389}
2390
a0d0e21e
LW
2391PP(pp_negate)
2392{
20b7effb 2393 dSP; dTARGET;
6f1401dc 2394 tryAMAGICun_MG(neg_amg, AMGf_numeric);
1c2b3fd6 2395 if (S_negate_string(aTHX)) return NORMAL;
a0d0e21e 2396 {
6f1401dc 2397 SV * const sv = TOPs;
a5b92898 2398
d96ab1b5 2399 if (SvIOK(sv)) {
7dbe3150 2400 /* It's publicly an integer */
28e5dec8 2401 oops_its_an_int:
9b0e499b
GS
2402 if (SvIsUV(sv)) {
2403 if (SvIVX(sv) == IV_MIN) {
28e5dec8 2404 /* 2s complement assumption. */
d14578b8
KW
2405 SETi(SvIVX(sv)); /* special case: -((UV)IV_MAX+1) ==
2406 IV_MIN */
245d035e 2407 return NORMAL;
9b0e499b
GS
2408 }
2409 else if (SvUVX(sv) <= IV_MAX) {
beccb14c 2410 SETi(-SvIVX(sv));
245d035e 2411 return NORMAL;
9b0e499b
GS
2412 }
2413 }
2414 else if (SvIVX(sv) != IV_MIN) {
2415 SETi(-SvIVX(sv));
245d035e 2416 return NORMAL;
9b0e499b 2417 }
28e5dec8
JH
2418#ifdef PERL_PRESERVE_IVUV
2419 else {
2420 SETu((UV)IV_MIN);
245d035e 2421 return NORMAL;
28e5dec8
JH
2422 }
2423#endif
9b0e499b 2424 }
8a5decd8 2425 if (SvNIOKp(sv) && (SvNIOK(sv) || !SvPOK(sv)))
6f1401dc 2426 SETn(-SvNV_nomg(sv));
1c2b3fd6 2427 else if (SvPOKp(sv) && SvIV_please_nomg(sv))
8eb28a70 2428 goto oops_its_an_int;
4633a7c4 2429 else
6f1401dc 2430 SETn(-SvNV_nomg(sv));
79072805 2431 }
245d035e 2432 return NORMAL;
79072805
LW
2433}
2434
a0d0e21e 2435PP(pp_not)
79072805 2436{
20b7effb 2437 dSP;
6f1401dc 2438 tryAMAGICun_MG(not_amg, AMGf_set);
06c841cf 2439 *PL_stack_sp = boolSV(!SvTRUE_nomg(*PL_stack_sp));
a0d0e21e 2440 return NORMAL;
79072805
LW
2441}
2442
5d01050a
FC
2443static void
2444S_scomplement(pTHX_ SV *targ, SV *sv)
79072805 2445{
eb578fdb
KW
2446 U8 *tmps;
2447 I32 anum;
a0d0e21e
LW
2448 STRLEN len;
2449
85b0ee6e
FC
2450 sv_copypv_nomg(TARG, sv);
2451 tmps = (U8*)SvPV_nomg(TARG, len);
a0d0e21e 2452 anum = len;
1d68d6cd 2453 if (SvUTF8(TARG)) {
a1ca4561 2454 /* Calculate exact length, let's not estimate. */
1d68d6cd 2455 STRLEN targlen = 0;
ba210ebe 2456 STRLEN l;
a1ca4561
YST
2457 UV nchar = 0;
2458 UV nwide = 0;
01f6e806 2459 U8 * const send = tmps + len;
74d49cd0
ST
2460 U8 * const origtmps = tmps;
2461 const UV utf8flags = UTF8_ALLOW_ANYUV;
1d68d6cd 2462
1d68d6cd 2463 while (tmps < send) {
74d49cd0
ST
2464 const UV c = utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags);
2465 tmps += l;
5bbb0b5a 2466 targlen += UNISKIP(~c);
a1ca4561
YST
2467 nchar++;
2468 if (c > 0xff)
2469 nwide++;
1d68d6cd
SC
2470 }
2471
2472 /* Now rewind strings and write them. */
74d49cd0 2473 tmps = origtmps;
a1ca4561
YST
2474
2475 if (nwide) {
01f6e806
AL
2476 U8 *result;
2477 U8 *p;
2478
74d49cd0 2479 Newx(result, targlen + 1, U8);
01f6e806 2480 p = result;
a1ca4561 2481 while (tmps < send) {
74d49cd0
ST
2482 const UV c = utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags);
2483 tmps += l;
01f6e806 2484 p = uvchr_to_utf8_flags(p, ~c, UNICODE_ALLOW_ANY);
a1ca4561 2485 }
01f6e806 2486 *p = '\0';
c1c21316
NC
2487 sv_usepvn_flags(TARG, (char*)result, targlen,
2488 SV_HAS_TRAILING_NUL);
a1ca4561
YST
2489 SvUTF8_on(TARG);
2490 }
2491 else {
01f6e806
AL
2492 U8 *result;
2493 U8 *p;
2494
74d49cd0 2495 Newx(result, nchar + 1, U8);
01f6e806 2496 p = result;
a1ca4561 2497 while (tmps < send) {
74d49cd0
ST
2498 const U8 c = (U8)utf8n_to_uvchr(tmps, send-tmps, &l, utf8flags);
2499 tmps += l;
01f6e806 2500 *p++ = ~c;
a1ca4561 2501 }
01f6e806 2502 *p = '\0';
c1c21316 2503 sv_usepvn_flags(TARG, (char*)result, nchar, SV_HAS_TRAILING_NUL);
d0a21e00 2504 SvUTF8_off(TARG);
1d68d6cd 2505 }
5d01050a 2506 return;
1d68d6cd 2507 }
a0d0e21e 2508#ifdef LIBERAL
51723571 2509 {
eb578fdb 2510 long *tmpl;
51723571
JH
2511 for ( ; anum && (unsigned long)tmps % sizeof(long); anum--, tmps++)
2512 *tmps = ~*tmps;
2513 tmpl = (long*)tmps;
bb7a0f54 2514 for ( ; anum >= (I32)sizeof(long); anum -= (I32)sizeof(long), tmpl++)
51723571
JH
2515 *tmpl = ~*tmpl;
2516 tmps = (U8*)tmpl;
2517 }
a0d0e21e
LW
2518#endif
2519 for ( ; anum > 0; anum--, tmps++)
2520 *tmps = ~*tmps;
5d01050a
FC
2521}
2522
2523PP(pp_complement)
2524{
2525 dSP; dTARGET;
2526 tryAMAGICun_MG(compl_amg, AMGf_numeric);
2527 {
2528 dTOPss;
2529 if (SvNIOKp(sv)) {
2530 if (PL_op->op_private & HINT_INTEGER) {
2531 const IV i = ~SvIV_nomg(sv);
2532 SETi(i);
2533 }
2534 else {
2535 const UV u = ~SvUV_nomg(sv);
2536 SETu(u);
2537 }
2538 }
2539 else {
2540 S_scomplement(aTHX_ TARG, sv);
ec93b65f 2541 SETTARG;
a0d0e21e 2542 }
24840750 2543 return NORMAL;
5d01050a
FC
2544 }
2545}
2546
2547PP(pp_ncomplement)
2548{
2549 dSP;
636ac8fc 2550 tryAMAGICun_MG(compl_amg, AMGf_numeric|AMGf_numarg);
5d01050a
FC
2551 {
2552 dTARGET; dTOPss;
2553 if (PL_op->op_private & HINT_INTEGER) {
2554 const IV i = ~SvIV_nomg(sv);
2555 SETi(i);
2556 }
2557 else {
2558 const UV u = ~SvUV_nomg(sv);
2559 SETu(u);
2560 }
2561 }
2562 return NORMAL;
2563}
2564
2565PP(pp_scomplement)
2566{
2567 dSP;
2568 tryAMAGICun_MG(scompl_amg, AMGf_numeric);
2569 {
2570 dTARGET; dTOPss;
2571 S_scomplement(aTHX_ TARG, sv);
2572 SETTARG;
2573 return NORMAL;
a0d0e21e 2574 }
79072805
LW
2575}
2576
a0d0e21e
LW
2577/* integer versions of some of the above */
2578
a0d0e21e 2579PP(pp_i_multiply)
79072805 2580{
20b7effb 2581 dSP; dATARGET;
6f1401dc 2582 tryAMAGICbin_MG(mult_amg, AMGf_assign);
a0d0e21e 2583 {
6f1401dc 2584 dPOPTOPiirl_nomg;
a0d0e21e
LW
2585 SETi( left * right );
2586 RETURN;
2587 }
79072805
LW
2588}
2589
a0d0e21e 2590PP(pp_i_divide)
79072805 2591{
85935d8e 2592 IV num;
20b7effb 2593 dSP; dATARGET;
6f1401dc 2594 tryAMAGICbin_MG(div_amg, AMGf_assign);
a0d0e21e 2595 {
6f1401dc 2596 dPOPTOPssrl;
85935d8e 2597 IV value = SvIV_nomg(right);
a0d0e21e 2598 if (value == 0)
ece1bcef 2599 DIE(aTHX_ "Illegal division by zero");
85935d8e 2600 num = SvIV_nomg(left);
a0cec769
YST
2601
2602 /* avoid FPE_INTOVF on some platforms when num is IV_MIN */
2603 if (value == -1)
2604 value = - num;
2605 else
2606 value = num / value;
6f1401dc 2607 SETi(value);
a0d0e21e
LW
2608 RETURN;
2609 }
79072805
LW
2610}
2611
bf3d06aa
JC
2612#if defined(__GLIBC__) && IVSIZE == 8 && !defined(PERL_DEBUG_READONLY_OPS) \
2613 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
224ec323
JH
2614STATIC
2615PP(pp_i_modulo_0)
befad5d1
NC
2616#else
2617PP(pp_i_modulo)
2618#endif
224ec323
JH
2619{
2620 /* This is the vanilla old i_modulo. */
20b7effb 2621 dSP; dATARGET;
6f1401dc 2622 tryAMAGICbin_MG(modulo_amg, AMGf_assign);
224ec323 2623 {
6f1401dc 2624 dPOPTOPiirl_nomg;
224ec323
JH
2625 if (!right)
2626 DIE(aTHX_ "Illegal modulus zero");
a0cec769
YST
2627 /* avoid FPE_INTOVF on some platforms when left is IV_MIN */
2628 if (right == -1)
2629 SETi( 0 );
2630 else
2631 SETi( left % right );
224ec323
JH
2632 RETURN;
2633 }
2634}
2635
bf3d06aa
JC
2636#if defined(__GLIBC__) && IVSIZE == 8 && !defined(PERL_DEBUG_READONLY_OPS) \
2637 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
224ec323
JH
2638STATIC
2639PP(pp_i_modulo_1)
befad5d1 2640
224ec323 2641{
224ec323 2642 /* This is the i_modulo with the workaround for the _moddi3 bug
fce2b89e 2643 * in (at least) glibc 2.2.5 (the PERL_ABS() the workaround).
224ec323 2644 * See below for pp_i_modulo. */
20b7effb 2645 dSP; dATARGET;
6f1401dc 2646 tryAMAGICbin_MG(modulo_amg, AMGf_assign);
224ec323 2647 {
6f1401dc 2648 dPOPTOPiirl_nomg;
224ec323
JH
2649 if (!right)
2650 DIE(aTHX_ "Illegal modulus zero");
a0cec769
YST
2651 /* avoid FPE_INTOVF on some platforms when left is IV_MIN */
2652 if (right == -1)
2653 SETi( 0 );
2654 else
2655 SETi( left % PERL_ABS(right) );
224ec323
JH
2656 RETURN;
2657 }
224ec323
JH
2658}
2659
a0d0e21e 2660PP(pp_i_modulo)
79072805 2661{
6f1401dc
DM
2662 dVAR; dSP; dATARGET;
2663 tryAMAGICbin_MG(modulo_amg, AMGf_assign);
224ec323 2664 {
6f1401dc 2665 dPOPTOPiirl_nomg;
224ec323
JH
2666 if (!right)
2667 DIE(aTHX_ "Illegal modulus zero");
2668 /* The assumption is to use hereafter the old vanilla version... */
2669 PL_op->op_ppaddr =
2670 PL_ppaddr[OP_I_MODULO] =
1c127fab 2671 Perl_pp_i_modulo_0;
224ec323 2672 /* .. but if we have glibc, we might have a buggy _moddi3
bf3d06aa 2673 * (at least glibc 2.2.5 is known to have this bug), in other
224ec323
JH
2674 * words our integer modulus with negative quad as the second
2675 * argument might be broken. Test for this and re-patch the
2676 * opcode dispatch table if that is the case, remembering to
2677 * also apply the workaround so that this first round works
2678 * right, too. See [perl #9402] for more information. */
224ec323
JH
2679 {
2680 IV l = 3;
2681 IV r = -10;
2682 /* Cannot do this check with inlined IV constants since
2683 * that seems to work correctly even with the buggy glibc. */
2684 if (l % r == -3) {
2685 /* Yikes, we have the bug.
2686 * Patch in the workaround version. */
2687 PL_op->op_ppaddr =
2688 PL_ppaddr[OP_I_MODULO] =
2689 &Perl_pp_i_modulo_1;
2690 /* Make certain we work right this time, too. */
32fdb065 2691 right = PERL_ABS(right);
224ec323
JH
2692 }
2693 }
a0cec769
YST
2694 /* avoid FPE_INTOVF on some platforms when left is IV_MIN */
2695 if (right == -1)
2696 SETi( 0 );
2697 else
2698 SETi( left % right );
224ec323
JH
2699 RETURN;
2700 }
79072805 2701}
befad5d1 2702#endif
79072805 2703
a0d0e21e 2704PP(pp_i_add)
79072805 2705{
20b7effb 2706 dSP; dATARGET;
6f1401dc 2707 tryAMAGICbin_MG(add_amg, AMGf_assign);
a0d0e21e 2708 {
6f1401dc 2709 dPOPTOPiirl_ul_nomg;
a0d0e21e
LW
2710 SETi( left + right );
2711 RETURN;
79072805 2712 }
79072805
LW
2713}
2714
a0d0e21e 2715PP(pp_i_subtract)
79072805 2716{
20b7effb 2717 dSP; dATARGET;
6f1401dc 2718 tryAMAGICbin_MG(subtr_amg, AMGf_assign);
a0d0e21e 2719 {
6f1401dc 2720 dPOPTOPiirl_ul_nomg;
a0d0e21e
LW
2721 SETi( left - right );
2722 RETURN;
79072805 2723 }
79072805
LW
2724}
2725
a0d0e21e 2726PP(pp_i_lt)
79072805 2727{
20b7effb 2728 dSP;
6f1401dc 2729 tryAMAGICbin_MG(lt_amg, AMGf_set);
a0d0e21e 2730 {
96b6b87f 2731 dPOPTOPiirl_nomg;
54310121 2732 SETs(boolSV(left < right));
a0d0e21e
LW
2733 RETURN;
2734 }
79072805
LW
2735}
2736
a0d0e21e 2737PP(pp_i_gt)
79072805 2738{
20b7effb 2739 dSP;
6f1401dc 2740 tryAMAGICbin_MG(gt_amg, AMGf_set);
a0d0e21e 2741 {
96b6b87f 2742 dPOPTOPiirl_nomg;
54310121 2743 SETs(boolSV(left > right));
a0d0e21e
LW
2744 RETURN;
2745 }
79072805
LW
2746}
2747
a0d0e21e 2748PP(pp_i_le)
79072805 2749{
20b7effb 2750 dSP;
6f1401dc 2751 tryAMAGICbin_MG(le_amg, AMGf_set);
a0d0e21e 2752 {
96b6b87f 2753 dPOPTOPiirl_nomg;
54310121 2754 SETs(boolSV(left <= right));
a0d0e21e 2755 RETURN;
85e6fe83 2756 }
79072805
LW
2757}
2758
a0d0e21e 2759PP(pp_i_ge)
79072805 2760{
20b7effb 2761 dSP;
6f1401dc 2762 tryAMAGICbin_MG(ge_amg, AMGf_set);
a0d0e21e 2763 {
96b6b87f 2764 dPOPTOPiirl_nomg;
54310121 2765 SETs(boolSV(left >= right));
a0d0e21e
LW
2766 RETURN;
2767 }
79072805
LW
2768}
2769
a0d0e21e 2770PP(pp_i_eq)
79072805 2771{
20b7effb 2772 dSP;
6f1401dc 2773 tryAMAGICbin_MG(eq_amg, AMGf_set);
a0d0e21e 2774 {
96b6b87f 2775 dPOPTOPiirl_nomg;
54310121 2776 SETs(boolSV(left == right));
a0d0e21e
LW
2777 RETURN;
2778 }
79072805
LW
2779}
2780
a0d0e21e 2781PP(pp_i_ne)
79072805 2782{
20b7effb 2783 dSP;
6f1401dc 2784 tryAMAGICbin_MG(ne_amg, AMGf_set);
a0d0e21e 2785 {
96b6b87f 2786 dPOPTOPiirl_nomg;
54310121 2787 SETs(boolSV(left != right));
a0d0e21e
LW
2788 RETURN;
2789 }
79072805
LW
2790}
2791
a0d0e21e 2792PP(pp_i_ncmp)
79072805 2793{
20b7effb 2794 dSP; dTARGET;
6f1401dc 2795 tryAMAGICbin_MG(ncmp_amg, 0);
a0d0e21e 2796 {
96b6b87f 2797 dPOPTOPiirl_nomg;
a0d0e21e 2798 I32 value;
79072805 2799
a0d0e21e 2800 if (left > right)
79072805 2801 value = 1;
a0d0e21e 2802 else if (left < right)
79072805 2803 value = -1;
a0d0e21e 2804 else
79072805 2805 value = 0;
a0d0e21e
LW
2806 SETi(value);
2807 RETURN;
79072805 2808 }
85e6fe83
LW
2809}
2810
2811PP(pp_i_negate)
2812{
20b7effb 2813 dSP; dTARGET;
6f1401dc 2814 tryAMAGICun_MG(neg_amg, 0);
1c2b3fd6 2815 if (S_negate_string(aTHX)) return NORMAL;
6f1401dc
DM
2816 {
2817 SV * const sv = TOPs;
2818 IV const i = SvIV_nomg(sv);
2819 SETi(-i);
ae642386 2820 return NORMAL;
6f1401dc 2821 }
85e6fe83
LW
2822}
2823
79072805
LW
2824/* High falutin' math. */
2825
2826PP(pp_atan2)
2827{
20b7effb 2828 dSP; dTARGET;
6f1401dc 2829 tryAMAGICbin_MG(atan2_amg, 0);
a0d0e21e 2830 {
096c060c 2831 dPOPTOPnnrl_nomg;
a1021d57 2832 SETn(Perl_atan2(left, right));
a0d0e21e
LW
2833 RETURN;
2834 }
79072805
LW
2835}
2836
b1c05ba5
DM
2837
2838/* also used for: pp_cos() pp_exp() pp_log() pp_sqrt() */
2839
79072805
LW
2840PP(pp_sin)
2841{
20b7effb 2842 dSP; dTARGET;
af71714e 2843 int amg_type = fallback_amg;
71302fe3 2844 const char *neg_report = NULL;
71302fe3
NC
2845 const int op_type = PL_op->op_type;
2846
2847 switch (op_type) {
af71714e
JH
2848 case OP_SIN: amg_type = sin_amg; break;
2849 case OP_COS: amg_type = cos_amg; break;
2850 case OP_EXP: amg_type = exp_amg; break;
2851 case OP_LOG: amg_type = log_amg; neg_report = "log"; break;
2852 case OP_SQRT: amg_type = sqrt_amg; neg_report = "sqrt"; break;
a0d0e21e 2853 }
79072805 2854
af71714e 2855 assert(amg_type != fallback_amg);
6f1401dc
DM
2856
2857 tryAMAGICun_MG(amg_type, 0);
a0d0e21e 2858 {
8c78ed36 2859 SV * const arg = TOPs;
6f1401dc 2860 const NV value = SvNV_nomg(arg);
f256868e 2861 NV result = NV_NAN;
af71714e 2862 if (neg_report) { /* log or sqrt */
a3463d96
DD
2863 if (
2864#if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
2865 ! Perl_isnan(value) &&
2866#endif
2867 (op_type == OP_LOG ? (value <= 0.0) : (value < 0.0))) {
71302fe3 2868 SET_NUMERIC_STANDARD();
dcbac5bb 2869 /* diag_listed_as: Can't take log of %g */
71302fe3
NC
2870 DIE(aTHX_ "Can't take %s of %"NVgf, neg_report, value);
2871 }
2872 }
af71714e 2873 switch (op_type) {
f256868e 2874 default:
af71714e
JH
2875 case OP_SIN: result = Perl_sin(value); break;
2876 case OP_COS: result = Perl_cos(value); break;
2877 case OP_EXP: result = Perl_exp(value); break;
2878 case OP_LOG: result = Perl_log(value); break;
2879 case OP_SQRT: result = Perl_sqrt(value); break;
2880 }
8c78ed36
FC
2881 SETn(result);
2882 return NORMAL;
a0d0e21e 2883 }
79072805
LW
2884}
2885
56cb0a1c
AD
2886/* Support Configure command-line overrides for rand() functions.
2887 After 5.005, perhaps we should replace this by Configure support
2888 for drand48(), random(), or rand(). For 5.005, though, maintain
2889 compatibility by calling rand() but allow the user to override it.
2890 See INSTALL for details. --Andy Dougherty 15 July 1998
2891*/
85ab1d1d
JH
2892/* Now it's after 5.005, and Configure supports drand48() and random(),
2893 in addition to rand(). So the overrides should not be needed any more.
2894 --Jarkko Hietaniemi 27 September 1998
2895 */
2896
79072805
LW
2897PP(pp_rand)
2898{
80252599 2899 if (!PL_srand_called) {
85ab1d1d 2900 (void)seedDrand01((Rand_seed_t)seed());
80252599 2901 PL_srand_called = TRUE;
93dc8474 2902 }
fdf4dddd
DD
2903 {
2904 dSP;
2905 NV value;
fdf4dddd
DD
2906
2907 if (MAXARG < 1)
7e9044f9
FC
2908 {
2909 EXTEND(SP, 1);
fdf4dddd 2910 value = 1.0;
7e9044f9 2911 }
fdf4dddd
DD
2912 else {
2913 SV * const sv = POPs;
2914 if(!sv)
2915 value = 1.0;
2916 else
2917 value = SvNV(sv);
2918 }
2919 /* 1 of 2 things can be carried through SvNV, SP or TARG, SP was carried */
a3463d96
DD
2920#if defined(NAN_COMPARE_BROKEN) && defined(Perl_isnan)
2921 if (! Perl_isnan(value) && value == 0.0)
2922#else
659c4b96 2923 if (value == 0.0)
a3463d96 2924#endif
fdf4dddd
DD
2925 value = 1.0;
2926 {
2927 dTARGET;
2928 PUSHs(TARG);
2929 PUTBACK;
2930 value *= Drand01();
2931 sv_setnv_mg(TARG, value);
2932 }
2933 }
2934 return NORMAL;
79072805
LW
2935}
2936
2937PP(pp_srand)
2938{
20b7effb 2939 dSP; dTARGET;
f914a682
JL
2940 UV anum;
2941
0a5f3363 2942 if (MAXARG >= 1 && (TOPs || POPs)) {
f914a682
JL
2943 SV *top;
2944 char *pv;
2945 STRLEN len;
2946 int flags;
2947
2948 top = POPs;
2949 pv = SvPV(top, len);
2950 flags = grok_number(pv, len, &anum);
2951
2952 if (!(flags & IS_NUMBER_IN_UV)) {
2953 Perl_ck_warner_d(aTHX_ packWARN(WARN_OVERFLOW),
2954 "Integer overflow in srand");
2955 anum = UV_MAX;
2956 }
2957 }
2958 else {
2959 anum = seed();
2960 }
2961
85ab1d1d 2962 (void)seedDrand01((Rand_seed_t)anum);
80252599 2963 PL_srand_called = TRUE;
da1010ec
NC
2964 if (anum)
2965 XPUSHu(anum);
2966 else {
2967 /* Historically srand always returned true. We can avoid breaking
2968 that like this: */
2969 sv_setpvs(TARG, "0 but true");
2970 XPUSHTARG;
2971 }
83832992 2972 RETURN;
79072805
LW
2973}
2974
79072805
LW
2975PP(pp_int)
2976{
20b7effb 2977 dSP; dTARGET;
6f1401dc 2978 tryAMAGICun_MG(int_amg, AMGf_numeric);
774d564b 2979 {
6f1401dc
DM
2980 SV * const sv = TOPs;
2981 const IV iv = SvIV_nomg(sv);
28e5dec8
JH
2982 /* XXX it's arguable that compiler casting to IV might be subtly
2983 different from modf (for numbers inside (IV_MIN,UV_MAX)) in which
2984 else preferring IV has introduced a subtle behaviour change bug. OTOH
2985 relying on floating point to be accurate is a bug. */
2986
c781a409 2987 if (!SvOK(sv)) {
922c4365 2988 SETu(0);
c781a409
RD
2989 }
2990 else if (SvIOK(sv)) {
2991 if (SvIsUV(sv))
6f1401dc 2992 SETu(SvUV_nomg(sv));
c781a409 2993 else
28e5dec8 2994 SETi(iv);
c781a409 2995 }
c781a409 2996 else {
6f1401dc 2997 const NV value = SvNV_nomg(sv);
b9d05018
FC
2998 if (UNLIKELY(Perl_isinfnan(value)))
2999 SETn(value);
5bf8b78e 3000 else if (value >= 0.0) {
28e5dec8
JH
3001 if (value < (NV)UV_MAX + 0.5) {
3002 SETu(U_V(value));
3003 } else {
059a1014 3004 SETn(Perl_floor(value));
28e5dec8 3005 }
1048ea30 3006 }
28e5dec8
JH
3007 else {
3008 if (value > (NV)IV_MIN - 0.5) {
3009 SETi(I_V(value));
3010 } else {
1bbae031 3011 SETn(Perl_ceil(value));
28e5dec8
JH
3012 }
3013 }
774d564b 3014 }
79072805 3015 }
699e9491 3016 return NORMAL;
79072805
LW
3017}
3018
463ee0b2
LW
3019PP(pp_abs)
3020{
20b7effb 3021 dSP; dTARGET;
6f1401dc 3022 tryAMAGICun_MG(abs_amg, AMGf_numeric);
a0d0e21e 3023 {
6f1401dc 3024 SV * const sv = TOPs;
28e5dec8 3025 /* This will cache the NV value if string isn't actually integer */
6f1401dc 3026 const IV iv = SvIV_nomg(sv);
a227d84d 3027
800401ee 3028 if (!SvOK(sv)) {
922c4365 3029 SETu(0);
800401ee
JH
3030 }
3031 else if (SvIOK(sv)) {
28e5dec8 3032 /* IVX is precise */
800401ee 3033 if (SvIsUV(sv)) {
6f1401dc 3034 SETu(SvUV_nomg(sv)); /* force it to be numeric only */
28e5dec8
JH
3035 } else {
3036 if (iv >= 0) {
3037 SETi(iv);
3038 } else {
3039 if (iv != IV_MIN) {
3040 SETi(-iv);
3041 } else {
3042 /* 2s complement assumption. Also, not really needed as
3043 IV_MIN and -IV_MIN should both be %100...00 and NV-able */
3044 SETu(IV_MIN);
3045 }
a227d84d 3046 }
28e5dec8
JH
3047 }
3048 } else{
6f1401dc 3049 const NV value = SvNV_nomg(sv);
774d564b 3050 if (value < 0.0)
1b6737cc 3051 SETn(-value);
a4474c9e
DD
3052 else
3053 SETn(value);
774d564b 3054 }
a0d0e21e 3055 }
067b7929 3056 return NORMAL;
463ee0b2
LW
3057}
3058
b1c05ba5
DM
3059
3060/* also used for: pp_hex() */
3061
79072805
LW
3062PP(pp_oct)
3063{
20b7effb 3064 dSP; dTARGET;
5c144d81 3065 const char *tmps;
53305cf1 3066 I32 flags = PERL_SCAN_ALLOW_UNDERSCORES;
6f894ead 3067 STRLEN len;
53305cf1
NC
3068 NV result_nv;
3069 UV result_uv;
4e51bcca 3070 SV* const sv = TOPs;
79072805 3071
349d4f2f 3072 tmps = (SvPV_const(sv, len));
2bc69dc4
NIS
3073 if (DO_UTF8(sv)) {
3074 /* If Unicode, try to downgrade
3075 * If not possible, croak. */
1b6737cc 3076 SV* const tsv = sv_2mortal(newSVsv(sv));
2bc69dc4
NIS
3077
3078 SvUTF8_on(tsv);
3079 sv_utf8_downgrade(tsv, FALSE);
349d4f2f 3080 tmps = SvPV_const(tsv, len);
2bc69dc4 3081 }
daa2adfd
NC
3082 if (PL_op->op_type == OP_HEX)
3083 goto hex;
3084
6f894ead 3085 while (*tmps && len && isSPACE(*tmps))
53305cf1 3086 tmps++, len--;
9e24b6e2 3087 if (*tmps == '0')
53305cf1 3088 tmps++, len--;
305b8651 3089 if (isALPHA_FOLD_EQ(*tmps, 'x')) {
daa2adfd 3090 hex:
53305cf1 3091 result_uv = grok_hex (tmps, &len, &flags, &result_nv);
daa2adfd 3092 }
305b8651 3093 else if (isALPHA_FOLD_EQ(*tmps, 'b'))
53305cf1 3094 result_uv = grok_bin (tmps, &len, &flags, &result_nv);
464e2e8a 3095 else
53305cf1
NC
3096 result_uv = grok_oct (tmps, &len, &flags, &result_nv);
3097
3098 if (flags & PERL_SCAN_GREATER_THAN_UV_MAX) {
4e51bcca 3099 SETn(result_nv);
53305cf1
NC
3100 }
3101 else {
4e51bcca 3102 SETu(result_uv);
53305cf1 3103 }
4e51bcca 3104 return NORMAL;
79072805
LW
3105}
3106
3107/* String stuff. */
3108
3109PP(pp_length)
3110{
20b7effb 3111 dSP; dTARGET;
0bd48802 3112 SV * const sv = TOPs;
a0ed51b3 3113
7776003e
DD
3114 U32 in_bytes = IN_BYTES;
3115 /* simplest case shortcut */
3116 /* turn off SVf_UTF8 in tmp flags if HINT_BYTES on*/
3117 U32 svflags = (SvFLAGS(sv) ^ (in_bytes << 26)) & (SVf_POK|SVs_GMG|SVf_UTF8);
6d59e610 3118 STATIC_ASSERT_STMT(HINT_BYTES == 0x00000008 && SVf_UTF8 == 0x20000000 && (SVf_UTF8 == HINT_BYTES << 26));
7776003e
DD
3119 SETs(TARG);
3120
3121 if(LIKELY(svflags == SVf_POK))
3122 goto simple_pv;
3123 if(svflags & SVs_GMG)
3124 mg_get(sv);
0f43fd57 3125 if (SvOK(sv)) {
7776003e
DD
3126 if (!IN_BYTES) /* reread to avoid using an C auto/register */
3127 sv_setiv(TARG, (IV)sv_len_utf8_nomg(sv));
9f621bb0 3128 else
0f43fd57
FC
3129 {
3130 STRLEN len;
7776003e
DD
3131 /* unrolled SvPV_nomg_const(sv,len) */
3132 if(SvPOK_nog(sv)){
3133 simple_pv:
3134 len = SvCUR(sv);
3135 } else {
3136 (void)sv_2pv_flags(sv, &len, 0|SV_CONST_RETURN);
3137 }
3138 sv_setiv(TARG, (IV)(len));
0f43fd57 3139 }
656266fc 3140 } else {
9407f9c1
DL
3141 if (!SvPADTMP(TARG)) {
3142 sv_setsv_nomg(TARG, &PL_sv_undef);
7776003e
DD
3143 } else { /* TARG is on stack at this point and is overwriten by SETs.
3144 This branch is the odd one out, so put TARG by default on
3145 stack earlier to let local SP go out of liveness sooner */
3146 SETs(&PL_sv_undef);
3147 goto no_set_magic;
3148 }
92331800 3149 }
7776003e
DD
3150 SvSETMAGIC(TARG);
3151 no_set_magic:
3152 return NORMAL; /* no putback, SP didn't move in this opcode */
79072805
LW
3153}
3154
83f78d1a
FC
3155/* Returns false if substring is completely outside original string.
3156 No length is indicated by len_iv = 0 and len_is_uv = 0. len_is_uv must
3157 always be true for an explicit 0.
3158*/
3159bool
ddeaf645
DD
3160Perl_translate_substr_offsets( STRLEN curlen, IV pos1_iv,
3161 bool pos1_is_uv, IV len_iv,
3162 bool len_is_uv, STRLEN *posp,
3163 STRLEN *lenp)
83f78d1a
FC
3164{
3165 IV pos2_iv;
3166 int pos2_is_uv;
3167
3168 PERL_ARGS_ASSERT_TRANSLATE_SUBSTR_OFFSETS;
3169
3170 if (!pos1_is_uv && pos1_iv < 0 && curlen) {
3171 pos1_is_uv = curlen-1 > ~(UV)pos1_iv;
3172 pos1_iv += curlen;
3173 }
3174 if ((pos1_is_uv || pos1_iv > 0) && (UV)pos1_iv > curlen)
3175 return FALSE;
3176
3177 if (len_iv || len_is_uv) {
3178 if (!len_is_uv && len_iv < 0) {
3179 pos2_iv = curlen + len_iv;
3180 if (curlen)
3181 pos2_is_uv = curlen-1 > ~(UV)len_iv;
3182 else
3183 pos2_is_uv = 0;
3184 } else { /* len_iv >= 0 */
3185 if (!pos1_is_uv && pos1_iv < 0) {
3186 pos2_iv = pos1_iv + len_iv;
3187 pos2_is_uv = (UV)len_iv > (UV)IV_MAX;
3188 } else {
3189 if ((UV)len_iv > curlen-(UV)pos1_iv)
3190 pos2_iv = curlen;
3191 else
3192 pos2_iv = pos1_iv+len_iv;
3193 pos2_is_uv = 1;
3194 }
3195 }
3196 }
3197 else {
3198 pos2_iv = curlen;
3199 pos2_is_uv = 1;
3200 }
3201
3202 if (!pos2_is_uv && pos2_iv < 0) {
3203 if (!pos1_is_uv && pos1_iv < 0)
3204 return FALSE;
3205 pos2_iv = 0;
3206 }
3207 else if (!pos1_is_uv && pos1_iv < 0)
3208 pos1_iv = 0;
3209
3210 if ((UV)pos2_iv < (UV)pos1_iv)
3211 pos2_iv = pos1_iv;
3212 if ((UV)pos2_iv > curlen)
3213 pos2_iv = curlen;
3214
3215 /* pos1_iv and pos2_iv both in 0..curlen, so the cast is safe */
3216 *posp = (STRLEN)( (UV)pos1_iv );
3217 *lenp = (STRLEN)( (UV)pos2_iv - (UV)pos1_iv );
3218
3219 return TRUE;
3220}
3221
79072805
LW
3222PP(pp_substr)
3223{
20b7effb 3224 dSP; dTARGET;
79072805 3225 SV *sv;
463ee0b2 3226 STRLEN curlen;
9402d6ed 3227 STRLEN utf8_curlen;
777f7c56
EB
3228 SV * pos_sv;
3229 IV pos1_iv;
3230 int pos1_is_uv;
777f7c56
EB
3231 SV * len_sv;
3232 IV len_iv = 0;
83f78d1a 3233 int len_is_uv = 0;
24fcb59f 3234 I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
bbddc9e0 3235 const bool rvalue = (GIMME_V != G_VOID);
e1ec3a88 3236 const char *tmps;
9402d6ed 3237 SV *repl_sv = NULL;
cbbf8932 3238 const char *repl = NULL;
7b8d334a 3239 STRLEN repl_len;
7bc95ae1 3240 int num_args = PL_op->op_private & 7;
13e30c65 3241 bool repl_need_utf8_upgrade = FALSE;
79072805 3242
78f9721b
SM
3243 if (num_args > 2) {
3244 if (num_args > 3) {
24fcb59f 3245 if(!(repl_sv = POPs)) num_args--;
7bc95ae1
FC
3246 }
3247 if ((len_sv = POPs)) {
3248 len_iv = SvIV(len_sv);
83f78d1a 3249 len_is_uv = len_iv ? SvIOK_UV(len_sv) : 1;
7b8d334a 3250 }
7bc95ae1 3251 else num_args--;
5d82c453 3252 }
777f7c56
EB
3253 pos_sv = POPs;
3254 pos1_iv = SvIV(pos_sv);
3255 pos1_is_uv = SvIOK_UV(pos_sv);
79072805 3256 sv = POPs;
24fcb59f
FC
3257 if (PL_op->op_private & OPpSUBSTR_REPL_FIRST) {
3258 assert(!repl_sv);
3259 repl_sv = POPs;
3260 }
6582db62 3261 if (lvalue && !repl_sv) {
83f78d1a
FC
3262 SV * ret;
3263 ret = sv_2mortal(newSV_type(SVt_PVLV)); /* Not TARG RT#67838 */
3264 sv_magic(ret, NULL, PERL_MAGIC_substr, NULL, 0);
3265 LvTYPE(ret) = 'x';
3266 LvTARG(ret) = SvREFCNT_inc_simple(sv);
3267 LvTARGOFF(ret) =
3268 pos1_is_uv || pos1_iv >= 0
3269 ? (STRLEN)(UV)pos1_iv
3270 : (LvFLAGS(ret) |= 1, (STRLEN)(UV)-pos1_iv);
3271 LvTARGLEN(ret) =
3272 len_is_uv || len_iv > 0
3273 ? (STRLEN)(UV)len_iv
3274 : (LvFLAGS(ret) |= 2, (STRLEN)(UV)-len_iv);
3275
83f78d1a
FC
3276 PUSHs(ret); /* avoid SvSETMAGIC here */
3277 RETURN;
a74fb2cd 3278 }
6582db62
FC
3279 if (repl_sv) {
3280 repl = SvPV_const(repl_sv, repl_len);
3281 SvGETMAGIC(sv);
3282 if (SvROK(sv))
3283 Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR),
3284 "Attempt to use reference as lvalue in substr"
3285 );
3286 tmps = SvPV_force_nomg(sv, curlen);
3287 if (DO_UTF8(repl_sv) && repl_len) {
3288 if (!DO_UTF8(sv)) {
01680ee9 3289 sv_utf8_upgrade_nomg(sv);
6582db62
FC
3290 curlen = SvCUR(sv);
3291 }
3292 }
3293 else if (DO_UTF8(sv))
3294 repl_need_utf8_upgrade = TRUE;
3295 }
3296 else tmps = SvPV_const(sv, curlen);
7e2040f0 3297 if (DO_UTF8(sv)) {
0d788f38 3298 utf8_curlen = sv_or_pv_len_utf8(sv, tmps, curlen);
9402d6ed
JH
3299 if (utf8_curlen == curlen)
3300 utf8_curlen = 0;
a0ed51b3 3301 else
9402d6ed 3302 curlen = utf8_curlen;
a0ed51b3 3303 }
d1c2b58a 3304 else
9402d6ed 3305 utf8_curlen = 0;
a0ed51b3 3306
83f78d1a
FC
3307 {
3308 STRLEN pos, len, byte_len, byte_pos;
777f7c56 3309
83f78d1a
FC
3310 if (!translate_substr_offsets(
3311 curlen, pos1_iv, pos1_is_uv, len_iv, len_is_uv, &pos, &len
3312 )) goto bound_fail;
777f7c56 3313
83f78d1a
FC
3314 byte_len = len;
3315 byte_pos = utf8_curlen
0d788f38 3316 ? sv_or_pv_pos_u2b(sv, tmps, pos, &byte_len) : pos;
d931b1be 3317
2154eca7 3318 tmps += byte_pos;
bbddc9e0
CS
3319
3320 if (rvalue) {
3321 SvTAINTED_off(TARG); /* decontaminate */
3322 SvUTF8_off(TARG); /* decontaminate */
3323 sv_setpvn(TARG, tmps, byte_len);
12aa1545 3324#ifdef USE_LOCALE_COLLATE
bbddc9e0 3325 sv_unmagic(TARG, PERL_MAGIC_collxfrm);
12aa1545 3326#endif
bbddc9e0
CS
3327 if (utf8_curlen)
3328 SvUTF8_on(TARG);
3329 }
2154eca7 3330
f7928d6c 3331 if (repl) {
13e30c65
JH
3332 SV* repl_sv_copy = NULL;
3333
3334 if (repl_need_utf8_upgrade) {
3335 repl_sv_copy = newSVsv(repl_sv);
3336 sv_utf8_upgrade(repl_sv_copy);
349d4f2f 3337 repl = SvPV_const(repl_sv_copy, repl_len);
13e30c65 3338 }
502d9230
VP
3339 if (!SvOK(sv))
3340 sv_setpvs(sv, "");
777f7c56 3341 sv_insert_flags(sv, byte_pos, byte_len, repl, repl_len, 0);
ef8d46e8 3342 SvREFCNT_dec(repl_sv_copy);
f7928d6c 3343 }
79072805 3344 }
6a9665b0
FC
3345 if (PL_op->op_private & OPpSUBSTR_REPL_FIRST)
3346 SP++;
3347 else if (rvalue) {
bbddc9e0
CS
3348 SvSETMAGIC(TARG);
3349 PUSHs(TARG);
3350 }
79072805 3351 RETURN;
777f7c56 3352
7b52d656 3353 bound_fail:
83f78d1a 3354 if (repl)
777f7c56
EB
3355 Perl_croak(aTHX_ "substr outside of string");
3356 Perl_ck_warner(aTHX_ packWARN(WARN_SUBSTR), "substr outside of string");
3357 RETPUSHUNDEF;
79072805
LW
3358}
3359
3360PP(pp_vec)
3361{
20b7effb 3362 dSP;
eb578fdb
KW
3363 const IV size = POPi;
3364 const IV offset = POPi;
3365 SV * const src = POPs;
1b6737cc 3366 const I32 lvalue = PL_op->op_flags & OPf_MOD || LVRET;
2154eca7 3367 SV * ret;
a0d0e21e 3368
81e118e0 3369 if (lvalue) { /* it's an lvalue! */
2154eca7
EB
3370 ret = sv_2mortal(newSV_type(SVt_PVLV)); /* Not TARG RT#67838 */
3371 sv_magic(ret, NULL, PERL_MAGIC_vec, NULL, 0);
3372 LvTYPE(ret) = 'v';
3373 LvTARG(ret) = SvREFCNT_inc_simple(src);
3374 LvTARGOFF(ret) = offset;
3375 LvTARGLEN(ret) = size;
3376 }
3377 else {
3378 dTARGET;
3379 SvTAINTED_off(TARG); /* decontaminate */
3380 ret = TARG;
79072805
LW
3381 }
3382
2154eca7 3383 sv_setuv(ret, do_vecget(src, offset, size));
f9e95907
FC
3384 if (!lvalue)
3385 SvSETMAGIC(ret);
2154eca7 3386 PUSHs(ret);
79072805
LW
3387 RETURN;
3388}
3389
b1c05ba5
DM
3390
3391/* also used for: pp_rindex() */
3392
79072805
LW
3393PP(pp_index)
3394{
20b7effb 3395 dSP; dTARGET;
79072805
LW
3396 SV *big;
3397 SV *little;
c445ea15 3398 SV *temp = NULL;
ad66a58c 3399 STRLEN biglen;
2723d216 3400 STRLEN llen = 0;
b464e2b7
TC
3401 SSize_t offset = 0;
3402 SSize_t retval;
73ee8be2
NC
3403 const char *big_p;
3404 const char *little_p;
2f040f7f
NC
3405 bool big_utf8;
3406 bool little_utf8;
2723d216 3407 const bool is_index = PL_op->op_type == OP_INDEX;
d3e26383 3408 const bool threeargs = MAXARG >= 3 && (TOPs || ((void)POPs,0));
79072805 3409
e1dccc0d
Z
3410 if (threeargs)
3411 offset = POPi;
79072805
LW
3412 little = POPs;
3413 big = POPs;
73ee8be2
NC
3414 big_p = SvPV_const(big, biglen);
3415 little_p = SvPV_const(little, llen);
3416
e609e586
NC
3417 big_utf8 = DO_UTF8(big);
3418 little_utf8 = DO_UTF8(little);
3419 if (big_utf8 ^ little_utf8) {
3420 /* One needs to be upgraded. */
47e13f24 3421 if (little_utf8 && !IN_ENCODING) {
2f040f7f
NC
3422 /* Well, maybe instead we might be able to downgrade the small
3423 string? */
1eced8f8 3424 char * const pv = (char*)bytes_from_utf8((U8 *)little_p, &llen,
2f040f7f
NC
3425 &little_utf8);
3426 if (little_utf8) {
3427 /* If the large string is ISO-8859-1, and it's not possible to
3428 convert the small string to ISO-8859-1, then there is no
3429 way that it could be found anywhere by index. */
3430 retval = -1;
3431 goto fail;
3432 }
e609e586 3433
2f040f7f
NC
3434 /* At this point, pv is a malloc()ed string. So donate it to temp
3435 to ensure it will get free()d */
3436 little = temp = newSV(0);
73ee8be2
NC
3437 sv_usepvn(temp, pv, llen);
3438 little_p = SvPVX(little);
e609e586 3439 } else {
73ee8be2
NC
3440 temp = little_utf8
3441 ? newSVpvn(big_p, biglen) : newSVpvn(little_p, llen);
2f040f7f 3442
47e13f24 3443 if (IN_ENCODING) {
ad2de1b2 3444 sv_recode_to_utf8(temp, _get_encoding());
2f040f7f
NC
3445 } else {
3446 sv_utf8_upgrade(temp);
3447 }
3448 if (little_utf8) {
3449 big = temp;
3450 big_utf8 = TRUE;
73ee8be2 3451 big_p = SvPV_const(big, biglen);
2f040f7f
NC
3452 } else {
3453 little = temp;
73ee8be2 3454 little_p = SvPV_const(little, llen);
2f040f7f 3455 }
e609e586
NC
3456 }
3457 }
73ee8be2
NC
3458 if (SvGAMAGIC(big)) {
3459 /* Life just becomes a lot easier if I use a temporary here.
3460 Otherwise I need to avoid calls to sv_pos_u2b(), which (dangerously)
3461 will trigger magic and overloading again, as will fbm_instr()
3462 */
59cd0e26
NC
3463 big = newSVpvn_flags(big_p, biglen,
3464 SVs_TEMP | (big_utf8 ? SVf_UTF8 : 0));
73ee8be2
NC
3465 big_p = SvPVX(big);
3466 }
e4e44778 3467 if (SvGAMAGIC(little) || (is_index && !SvOK(little))) {
73ee8be2
NC
3468 /* index && SvOK() is a hack. fbm_instr() calls SvPV_const, which will
3469 warn on undef, and we've already triggered a warning with the
3470 SvPV_const some lines above. We can't remove that, as we need to
3471 call some SvPV to trigger overloading early and find out if the
3472 string is UTF-8.
8bd97c0c 3473 This is all getting too messy. The API isn't quite clean enough,
73ee8be2
NC
3474 because data access has side effects.
3475 */
59cd0e26
NC
3476 little = newSVpvn_flags(little_p, llen,
3477 SVs_TEMP | (little_utf8 ? SVf_UTF8 : 0));
73ee8be2
NC
3478 little_p = SvPVX(little);
3479 }
e609e586 3480
d3e26383 3481 if (!threeargs)
2723d216 3482 offset = is_index ? 0 : biglen;
a0ed51b3 3483 else {
ad66a58c 3484 if (big_utf8 && offset > 0)
b464e2b7 3485 offset = sv_pos_u2b_flags(big, offset, 0, SV_CONST_RETURN);
73ee8be2
NC
3486 if (!is_index)
3487 offset += llen;
a0ed51b3 3488 }
79072805
LW
3489 if (offset < 0)
3490 offset = 0;
b464e2b7 3491 else if (offset > (SSize_t)biglen)
ad66a58c 3492 offset = biglen;
73ee8be2
NC
3493 if (!(little_p = is_index
3494 ? fbm_instr((unsigned char*)big_p + offset,
3495 (unsigned char*)big_p + biglen, little, 0)
3496 : rninstr(big_p, big_p + offset,
3497 little_p, little_p + llen)))
a0ed51b3 3498 retval = -1;
ad66a58c 3499 else {
73ee8be2 3500 retval = little_p - big_p;
15c41403 3501 if (retval > 1 && big_utf8)
b464e2b7 3502 retval = sv_pos_b2u_flags(big, retval, SV_CONST_RETURN);
ad66a58c 3503 }
ef8d46e8 3504 SvREFCNT_dec(temp);
2723d216 3505 fail:
e1dccc0d 3506 PUSHi(retval);
79072805
LW
3507 RETURN;
3508}
3509
3510PP(pp_sprintf)
3511{
20b7effb 3512 dSP; dMARK; dORIGMARK; dTARGET;
3e6bd4bf 3513 SvTAINTED_off(TARG);
79072805 3514 do_sprintf(TARG, SP-MARK, MARK+1);
bbce6d69 3515 TAINT_IF(SvTAINTED(TARG));
79072805
LW
3516 SP = ORIGMARK;
3517 PUSHTARG;
3518 RETURN;
3519}
3520
79072805
LW
3521PP(pp_ord)
3522{
20b7effb 3523 dSP; dTARGET;
1eced8f8 3524
6ba92227 3525 SV *argsv = TOPs;
ba210ebe 3526 STRLEN len;
349d4f2f 3527 const U8 *s = (U8*)SvPV_const(argsv, len);
121910a4 3528
47e13f24 3529 if (IN_ENCODING && SvPOK(argsv) && !DO_UTF8(argsv)) {
1eced8f8 3530 SV * const tmpsv = sv_2mortal(newSVsv(argsv));
ad2de1b2 3531 s = (U8*)sv_recode_to_utf8(tmpsv, _get_encoding());
4f6386b6 3532 len = UTF8SKIP(s); /* Should be well-formed; so this is its length */
121910a4
JH
3533 argsv = tmpsv;
3534 }
79072805 3535
6ba92227 3536 SETu(DO_UTF8(argsv)
4f6386b6 3537 ? utf8n_to_uvchr(s, len, 0, UTF8_ALLOW_ANYUV)
f3943cf2 3538 : (UV)(*s));
68795e93 3539
6ba92227 3540 return NORMAL;
79072805
LW
3541}
3542
463ee0b2
LW
3543PP(pp_chr)
3544{
20b7effb 3545 dSP; dTARGET;
463ee0b2 3546 char *tmps;
8a064bd6 3547 UV value;
d3261b99 3548 SV *top = TOPs;
8a064bd6 3549
71739502 3550 SvGETMAGIC(top);
9911fc4e
FC
3551 if (UNLIKELY(SvAMAGIC(top)))
3552 top = sv_2num(top);
99f450cc 3553 if (UNLIKELY(isinfnansv(top)))
0c7df902 3554 Perl_croak(aTHX_ "Cannot chr %"NVgf, SvNV(top));
1cd88304
JH
3555 else {
3556 if (!IN_BYTES /* under bytes, chr(-1) eq chr(0xff), etc. */
3557 && ((SvIOKp(top) && !SvIsUV(top) && SvIV_nomg(top) < 0)
3558 ||
3559 ((SvNOKp(top) || (SvOK(top) && !SvIsUV(top)))
3560 && SvNV_nomg(top) < 0.0))) {
b3fe8680
FC
3561 if (ckWARN(WARN_UTF8)) {
3562 if (SvGMAGICAL(top)) {
3563 SV *top2 = sv_newmortal();
3564 sv_setsv_nomg(top2, top);
3565 top = top2;
3566 }
1cd88304
JH
3567 Perl_warner(aTHX_ packWARN(WARN_UTF8),
3568 "Invalid negative number (%"SVf") in chr", SVfARG(top));
3569 }
3570 value = UNICODE_REPLACEMENT;
3571 } else {
3572 value = SvUV_nomg(top);
3573 }
8a064bd6 3574 }
463ee0b2 3575
862a34c6 3576 SvUPGRADE(TARG,SVt_PV);
a0ed51b3 3577
0064a8a9 3578 if (value > 255 && !IN_BYTES) {
eb160463 3579 SvGROW(TARG, (STRLEN)UNISKIP(value)+1);
62961d2e 3580 tmps = (char*)uvchr_to_utf8_flags((U8*)SvPVX(TARG), value, 0);
349d4f2f 3581 SvCUR_set(TARG, tmps - SvPVX_const(TARG));
a0ed51b3
LW
3582 *tmps = '\0';
3583 (void)SvPOK_only(TARG);
aa6ffa16 3584 SvUTF8_on(TARG);
d3261b99
FC
3585 SETTARG;
3586 return NORMAL;
a0ed51b3
LW
3587 }
3588
748a9306 3589 SvGROW(TARG,2);
463ee0b2
LW
3590 SvCUR_set(TARG, 1);
3591 tmps = SvPVX(TARG);
eb160463 3592 *tmps++ = (char)value;