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Wrong result for double-double sqrt(2).
[perl5.git] / perl.h
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a0d0e21e 1/* perl.h
a687059c 2 *
1129b882 3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5cd3f21a 4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 5 *
352d5a3a
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.
8d063cd8 8 *
8d063cd8 9 */
d6376244 10
85e6fe83
LW
11#ifndef H_PERL
12#define H_PERL 1
8d063cd8 13
760ac839
LW
14#ifdef PERL_FOR_X2P
15/*
d460ef45 16 * This file is being used for x2p stuff.
760ac839 17 * Above symbol is defined via -D in 'x2p/Makefile.SH'
d460ef45 18 * Decouple x2p stuff from some of perls more extreme eccentricities.
760ac839 19 */
55497cff 20#undef MULTIPLICITY
760ac839
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21#undef USE_STDIO
22#define USE_STDIO
23#endif /* PERL_FOR_X2P */
24
d460ef45 25#ifdef PERL_MICRO
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26# include "uconfig.h"
27#else
611cf957 28# include "config.h"
12ae5dfc 29#endif
0cb96387 30
b9f81531 31#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(_STDC_C99)
86a3cabf 32# define HAS_C99 1
86a3cabf
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33#endif
34
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35/* See L<perlguts/"The Perl API"> for detailed notes on
36 * PERL_IMPLICIT_CONTEXT and PERL_IMPLICIT_SYS */
37
ac6bedea
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38/* Note that from here --> to <-- the same logic is
39 * repeated in makedef.pl, so be certain to update
40 * both places when editing. */
41
6f4183fe 42#ifdef USE_ITHREADS
acfe0abc 43# if !defined(MULTIPLICITY)
6f4183fe
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44# define MULTIPLICITY
45# endif
46#endif
47
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48#ifdef PERL_GLOBAL_STRUCT_PRIVATE
49# ifndef PERL_GLOBAL_STRUCT
50# define PERL_GLOBAL_STRUCT
51# endif
52#endif
97aff369 53
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54#ifdef PERL_GLOBAL_STRUCT
55# ifndef MULTIPLICITY
56# define MULTIPLICITY
57# endif
58#endif
59
97aff369
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60#ifdef MULTIPLICITY
61# ifndef PERL_IMPLICIT_CONTEXT
62# define PERL_IMPLICIT_CONTEXT
63# endif
64#endif
65
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66/* undef WIN32 when building on Cygwin (for libwin32) - gph */
67#ifdef __CYGWIN__
68# undef WIN32
69# undef _WIN32
70#endif
71
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72#if defined(__SYMBIAN32__) || (defined(__VC32__) && defined(WINS))
73# ifndef SYMBIAN
74# define SYMBIAN
75# endif
76#endif
77
a0fd4948 78#ifdef __SYMBIAN32__
27da23d5
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79# include "symbian/symbian_proto.h"
80#endif
81
82/* Any stack-challenged places. The limit varies (and often
83 * is configurable), but using more than a kilobyte of stack
84 * is usually dubious in these systems. */
739a0b84
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85#if defined(__SYMBIAN32__)
86/* Symbian: need to work around the SDK features. *
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87 * On WINS: MS VC5 generates calls to _chkstk, *
88 * if a "large" stack frame is allocated. *
89 * gcc on MARM does not generate calls like these. */
90# define USE_HEAP_INSTEAD_OF_STACK
91#endif
92
dd134d2c 93/* Use the reentrant APIs like localtime_r and getpwent_r */
10bc17b6 94/* Win32 has naturally threadsafe libraries, no need to use any _r variants. */
6239f2da 95#if defined(USE_ITHREADS) && !defined(USE_REENTRANT_API) && !defined(NETWARE) && !defined(WIN32) && !defined(PERL_DARWIN)
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96# define USE_REENTRANT_API
97#endif
98
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99/* <--- here ends the logic shared by perl.h and makedef.pl */
100
9ea40801
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101/* Microsoft Visual C++ 6.0 needs special treatment in numerous places */
102#if defined(WIN32) && defined(_MSC_VER) && _MSC_VER >= 1200 && _MSC_VER < 1300
103# define USING_MSVC6
104#endif
105
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106#undef START_EXTERN_C
107#undef END_EXTERN_C
108#undef EXTERN_C
109#ifdef __cplusplus
110# define START_EXTERN_C extern "C" {
111# define END_EXTERN_C }
112# define EXTERN_C extern "C"
113#else
114# define START_EXTERN_C
115# define END_EXTERN_C
116# define EXTERN_C extern
117#endif
118
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119/* Fallback definitions in case we don't have definitions from config.h.
120 This should only matter for systems that don't use Configure and
121 haven't been modified to define PERL_STATIC_INLINE yet.
122*/
123#if !defined(PERL_STATIC_INLINE)
124# ifdef HAS_STATIC_INLINE
125# define PERL_STATIC_INLINE static inline
126# else
127# define PERL_STATIC_INLINE static
128# endif
129#endif
130
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131#ifdef PERL_GLOBAL_STRUCT
132# ifndef PERL_GET_VARS
133# ifdef PERL_GLOBAL_STRUCT_PRIVATE
cf5a8da6 134 EXTERN_C struct perl_vars* Perl_GetVarsPrivate();
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135# define PERL_GET_VARS() Perl_GetVarsPrivate() /* see miniperlmain.c */
136# ifndef PERLIO_FUNCS_CONST
137# define PERLIO_FUNCS_CONST /* Can't have these lying around. */
138# endif
139# else
140# define PERL_GET_VARS() PL_VarsPtr
141# endif
142# endif
143#endif
144
5aaab254 145#define pVAR struct perl_vars* my_vars PERL_UNUSED_DECL
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146
147#ifdef PERL_GLOBAL_STRUCT
148# define dVAR pVAR = (struct perl_vars*)PERL_GET_VARS()
149#else
150# define dVAR dNOOP
151#endif
152
c5be433b 153#ifdef PERL_IMPLICIT_CONTEXT
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154# ifndef MULTIPLICITY
155# define MULTIPLICITY
c5be433b 156# endif
e8dda941 157# define tTHX PerlInterpreter*
5aaab254 158# define pTHX tTHX my_perl PERL_UNUSED_DECL
3db8f154 159# define aTHX my_perl
9399a70c 160# define aTHXa(a) aTHX = (tTHX)a
27da23d5 161# ifdef PERL_GLOBAL_STRUCT
e8dda941 162# define dTHXa(a) dVAR; pTHX = (tTHX)a
27da23d5 163# else
e8dda941 164# define dTHXa(a) pTHX = (tTHX)a
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165# endif
166# ifdef PERL_GLOBAL_STRUCT
167# define dTHX dVAR; pTHX = PERL_GET_THX
168# else
169# define dTHX pTHX = PERL_GET_THX
170# endif
c5be433b 171# define pTHX_ pTHX,
c5be433b 172# define aTHX_ aTHX,
4373e329 173# define pTHX_1 2
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174# define pTHX_2 3
175# define pTHX_3 4
176# define pTHX_4 5
4373e329
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177# define pTHX_5 6
178# define pTHX_6 7
a3b680e6
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179# define pTHX_7 8
180# define pTHX_8 9
181# define pTHX_9 10
a6fc70e5 182# define pTHX_12 13
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183# if defined(DEBUGGING) && !defined(PERL_TRACK_MEMPOOL)
184# define PERL_TRACK_MEMPOOL
185# endif
186#else
187# undef PERL_TRACK_MEMPOOL
c5be433b
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188#endif
189
76e3520e 190#define STATIC static
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191
192#ifndef PERL_CORE
193/* Do not use these macros. They were part of PERL_OBJECT, which was an
194 * implementation of multiplicity using C++ objects. They have been left
195 * here solely for the sake of XS code which has incorrectly
196 * cargo-culted them.
197 */
76e3520e 198#define CPERLscope(x) x
565764a8 199#define CPERLarg void
76e3520e 200#define CPERLarg_
e3b8966e 201#define _CPERLarg
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202#define PERL_OBJECT_THIS
203#define _PERL_OBJECT_THIS
204#define PERL_OBJECT_THIS_
312caa8e 205#define CALL_FPTR(fptr) (*fptr)
ef69c8fc 206#define MEMBER_TO_FPTR(name) name
16c91539 207#endif /* !PERL_CORE */
76e3520e 208
16c91539 209#define CALLRUNOPS PL_runops
f9f4320a 210
3ab4a224 211#define CALLREGCOMP(sv, flags) Perl_pregcomp(aTHX_ (sv),(flags))
f9f4320a 212
16c91539 213#define CALLREGCOMP_ENG(prog, sv, flags) (prog)->comp(aTHX_ sv, flags)
a340edde 214#define CALLREGEXEC(prog,stringarg,strend,strbeg,minend,sv,data,flags) \
16c91539 215 RX_ENGINE(prog)->exec(aTHX_ (prog),(stringarg),(strend), \
a340edde 216 (strbeg),(minend),(sv),(data),(flags))
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217#define CALLREG_INTUIT_START(prog,sv,strbeg,strpos,strend,flags,data) \
218 RX_ENGINE(prog)->intuit(aTHX_ (prog), (sv), (strbeg), (strpos), \
f9f4320a
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219 (strend),(flags),(data))
220#define CALLREG_INTUIT_STRING(prog) \
16c91539 221 RX_ENGINE(prog)->checkstr(aTHX_ (prog))
f8149455 222
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223#define CALLREGFREE(prog) \
224 Perl_pregfree(aTHX_ (prog))
225
226#define CALLREGFREE_PVT(prog) \
16c91539 227 if(prog) RX_ENGINE(prog)->free(aTHX_ (prog))
f8149455 228
2fdbfb4d 229#define CALLREG_NUMBUF_FETCH(rx,paren,usesv) \
16c91539 230 RX_ENGINE(rx)->numbered_buff_FETCH(aTHX_ (rx),(paren),(usesv))
93b32b6d 231
2fdbfb4d 232#define CALLREG_NUMBUF_STORE(rx,paren,value) \
16c91539 233 RX_ENGINE(rx)->numbered_buff_STORE(aTHX_ (rx),(paren),(value))
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234
235#define CALLREG_NUMBUF_LENGTH(rx,sv,paren) \
16c91539 236 RX_ENGINE(rx)->numbered_buff_LENGTH(aTHX_ (rx),(sv),(paren))
2fdbfb4d 237
192b9cd1 238#define CALLREG_NAMED_BUFF_FETCH(rx, key, flags) \
16c91539 239 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_FETCH))
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240
241#define CALLREG_NAMED_BUFF_STORE(rx, key, value, flags) \
16c91539 242 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), (value), ((flags) | RXapif_STORE))
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243
244#define CALLREG_NAMED_BUFF_DELETE(rx, key, flags) \
16c91539 245 RX_ENGINE(rx)->named_buff(aTHX_ (rx),(key), NULL, ((flags) | RXapif_DELETE))
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246
247#define CALLREG_NAMED_BUFF_CLEAR(rx, flags) \
16c91539 248 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_CLEAR))
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249
250#define CALLREG_NAMED_BUFF_EXISTS(rx, key, flags) \
16c91539 251 RX_ENGINE(rx)->named_buff(aTHX_ (rx), (key), NULL, ((flags) | RXapif_EXISTS))
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252
253#define CALLREG_NAMED_BUFF_FIRSTKEY(rx, flags) \
16c91539 254 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), NULL, ((flags) | RXapif_FIRSTKEY))
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255
256#define CALLREG_NAMED_BUFF_NEXTKEY(rx, lastkey, flags) \
16c91539 257 RX_ENGINE(rx)->named_buff_iter(aTHX_ (rx), (lastkey), ((flags) | RXapif_NEXTKEY))
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258
259#define CALLREG_NAMED_BUFF_SCALAR(rx, flags) \
16c91539 260 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, ((flags) | RXapif_SCALAR))
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261
262#define CALLREG_NAMED_BUFF_COUNT(rx) \
16c91539 263 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, RXapif_REGNAMES_COUNT)
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264
265#define CALLREG_NAMED_BUFF_ALL(rx, flags) \
16c91539 266 RX_ENGINE(rx)->named_buff(aTHX_ (rx), NULL, NULL, flags)
93b32b6d 267
49d7dfbc 268#define CALLREG_PACKAGE(rx) \
16c91539 269 RX_ENGINE(rx)->qr_package(aTHX_ (rx))
93b32b6d 270
00f254e2 271#if defined(USE_ITHREADS)
f9f4320a 272#define CALLREGDUPE(prog,param) \
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273 Perl_re_dup(aTHX_ (prog),(param))
274
275#define CALLREGDUPE_PVT(prog,param) \
16c91539 276 (prog ? RX_ENGINE(prog)->dupe(aTHX_ (prog),(param)) \
00f254e2 277 : (REGEXP *)NULL)
f9f4320a 278#endif
14dd3ad8 279
a20207d7 280
bcdf7404 281
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282
283
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284/*
285 * Because of backward compatibility reasons the PERL_UNUSED_DECL
286 * cannot be changed from postfix to PERL_UNUSED_DECL(x). Sigh.
287 *
288 * Note that there are C compilers such as MetroWerks CodeWarrior
1266ad8c 289 * which do not have an "inlined" way (like the gcc __attribute__) of
5ba4cab2
SH
290 * marking unused variables (they need e.g. a #pragma) and therefore
291 * cpp macros like PERL_UNUSED_DECL cannot work for this purpose, even
292 * if it were PERL_UNUSED_DECL(x), which it cannot be (see above).
293 *
294 */
1266ad8c 295
9969cdde 296#if defined(__SYMBIAN32__) && defined(__GNUC__)
5b2bd0a5 297# ifdef __cplusplus
5ba4cab2 298# define PERL_UNUSED_DECL
5b2bd0a5 299# else
5ba4cab2 300# define PERL_UNUSED_DECL __attribute__((unused))
5b2bd0a5
AMS
301# endif
302#endif
44dbb695 303
5b2bd0a5 304#ifndef PERL_UNUSED_DECL
34659ad4 305# if defined(HASATTRIBUTE_UNUSED) && !defined(__cplusplus)
5ba4cab2 306# define PERL_UNUSED_DECL __attribute__unused__
b79c357a 307# else
5ba4cab2 308# define PERL_UNUSED_DECL
b79c357a 309# endif
5b2bd0a5 310#endif
00f254e2 311
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312/* gcc -Wall:
313 * for silencing unused variables that are actually used most of the time,
a0288114 314 * but we cannot quite get rid of, such as "ax" in PPCODE+noargs xsubs
349b520e 315 */
53c1dcc0 316#ifndef PERL_UNUSED_ARG
c99ffe5e 317# if defined(lint) && defined(S_SPLINT_S) /* www.splint.org */
ad73156c 318# include <note.h>
53c1dcc0 319# define PERL_UNUSED_ARG(x) NOTE(ARGUNUSED(x))
ad73156c 320# else
53c1dcc0 321# define PERL_UNUSED_ARG(x) ((void)x)
ad73156c
AL
322# endif
323#endif
53c1dcc0
AL
324#ifndef PERL_UNUSED_VAR
325# define PERL_UNUSED_VAR(x) ((void)x)
326#endif
ad73156c 327
23491f1d 328#if defined(USE_ITHREADS) || defined(PERL_GLOBAL_STRUCT)
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329# define PERL_UNUSED_CONTEXT PERL_UNUSED_ARG(my_perl)
330#else
331# define PERL_UNUSED_CONTEXT
332#endif
333
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334/* gcc (-ansi) -pedantic doesn't allow gcc statement expressions,
335 * g++ allows them but seems to have problems with them
336 * (insane errors ensue).
337 * g++ does not give insane errors now (RMB 2008-01-30, gcc 4.2.2).
338 */
339#if defined(PERL_GCC_PEDANTIC) || \
340 (defined(__GNUC__) && defined(__cplusplus) && \
341 ((__GNUC__ < 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ < 2))))
342# ifndef PERL_GCC_BRACE_GROUPS_FORBIDDEN
343# define PERL_GCC_BRACE_GROUPS_FORBIDDEN
344# endif
345#endif
346
ffea512f 347/* Use PERL_UNUSED_RESULT() to suppress the warnings about unused results
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348 * of function calls, e.g. PERL_UNUSED_RESULT(foo(a, b)).
349 *
350 * The main reason for this is that the combination of gcc -Wunused-result
351 * (part of -Wall) and the __attribute__((warn_unused_result)) cannot
352 * be silenced with casting to void. This causes trouble when the system
353 * header files use the attribute.
354 *
355 * Use PERL_UNUSED_RESULT sparingly, though, since usually the warning
356 * is there for a good reason: you might lose success/failure information,
357 * or leak resources, or changes in resources.
ffea512f
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358 *
359 * But sometimes you just want to ignore the return value, e.g. on
b469f1e0
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360 * codepaths soon ending up in abort, or in "best effort" attempts,
361 * or in situations where there is no good way to handle failures.
ffea512f 362 *
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363 * Sometimes PERL_UNUSED_RESULT might not be the most natural way:
364 * another possibility is that you can capture the return value
365 * and use PERL_UNUSED_VAR on that.
ffea512f 366 *
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367 * The __typeof__() is used instead of typeof() since typeof() is not
368 * available under strict C89, and because of compilers masquerading
369 * as gcc (clang and icc), we want exactly the gcc extension
370 * __typeof__ and nothing else.
ffea512f
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371 */
372#ifndef PERL_UNUSED_RESULT
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373# if defined(__GNUC__) && defined(HASATTRIBUTE_WARN_UNUSED_RESULT)
374# define PERL_UNUSED_RESULT(v) STMT_START { __typeof__(v) z = (v); (void)sizeof(z); } STMT_END
ffea512f
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375# else
376# define PERL_UNUSED_RESULT(v) ((void)(v))
377# endif
378#endif
379
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380/* on gcc (and clang), specify that a warning should be temporarily
381 * ignored; e.g.
382 *
383 * GCC_DIAG_IGNORE(-Wmultichar);
384 * char b = 'ab';
385 * GCC_DIAG_RESTORE;
386 *
387 * based on http://dbp-consulting.com/tutorials/SuppressingGCCWarnings.html
388 *
389 * Note that "pragma GCC diagnostic push/pop" was added in GCC 4.6, Mar 2011;
390 * clang only pretends to be GCC 4.2, but still supports push/pop.
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391 *
392 * Note on usage: on non-gcc (or lookalike, like clang) compilers
393 * one cannot use these at file (global) level without warnings
394 * since they are defined as empty, which leads into the terminating
395 * semicolon being left alone on a line:
396 * ;
397 * which makes compilers mildly cranky. Therefore at file level one
6ab56f1e
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398 * should use the GCC_DIAG_IGNORE and GCC_DIAG_RESTORE_FILE *without*
399 * the semicolons.
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400 *
401 * (A dead-on-arrival solution would be to try to define the macros as
402 * NOOP or dNOOP, those don't work both inside functions and outside.)
b56aac20
DM
403 */
404
57d4b8c5 405#if defined(__clang__) || defined(__clang) || \
d28ce8b4 406 (defined( __GNUC__) && ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406)
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407# define GCC_DIAG_PRAGMA(x) _Pragma (#x)
408/* clang has "clang diagnostic" pragmas, but also understands gcc. */
b56aac20 409# define GCC_DIAG_IGNORE(x) _Pragma("GCC diagnostic push") \
c1d6452f 410 GCC_DIAG_PRAGMA(GCC diagnostic ignored #x)
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411# define GCC_DIAG_RESTORE _Pragma("GCC diagnostic pop")
412#else
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413# define GCC_DIAG_IGNORE(w)
414# define GCC_DIAG_RESTORE
b56aac20
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415#endif
416
6f207bd3 417#define NOOP /*EMPTY*/(void)0
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418/* cea2e8a9dd23747f accidentally lost the comment originally from the first
419 check in of thread.h, explaining why we need dNOOP at all: */
420/* Rats: if dTHR is just blank then the subsequent ";" throws an error */
421/* Declaring a *function*, instead of a variable, ensures that we don't rely
422 on being able to suppress "unused" warnings. */
7db66e12
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423#ifdef __cplusplus
424#define dNOOP (void)0
425#else
64a8239e 426#define dNOOP extern int Perl___notused(void)
7db66e12 427#endif
71be2cbc 428
0cb96387 429#ifndef pTHX
a78adc84 430/* Don't bother defining tTHX ; using it outside
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431 * code guarded by PERL_IMPLICIT_CONTEXT is an error.
432 */
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433# define pTHX void
434# define pTHX_
0cb96387
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435# define aTHX
436# define aTHX_
9399a70c 437# define aTHXa(a) NOOP
0cb96387
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438# define dTHXa(a) dNOOP
439# define dTHX dNOOP
894356b3
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440# define pTHX_1 1
441# define pTHX_2 2
442# define pTHX_3 3
443# define pTHX_4 4
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444# define pTHX_5 5
445# define pTHX_6 6
a3b680e6
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446# define pTHX_7 7
447# define pTHX_8 8
448# define pTHX_9 9
a6fc70e5 449# define pTHX_12 12
0cb96387
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450#endif
451
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452#ifndef dVAR
453# define dVAR dNOOP
454#endif
455
b4f7f263
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456/* these are only defined for compatibility; should not be used internally */
457#if !defined(pTHXo) && !defined(PERL_CORE)
0cb96387
GS
458# define pTHXo pTHX
459# define pTHXo_ pTHX_
0cb96387
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460# define aTHXo aTHX
461# define aTHXo_ aTHX_
c5be433b 462# define dTHXo dTHX
71d280e3 463# define dTHXoa(x) dTHXa(x)
0cb96387
GS
464#endif
465
466#ifndef pTHXx
5aaab254 467# define pTHXx PerlInterpreter *my_perl
0cb96387 468# define pTHXx_ pTHXx,
0cb96387
GS
469# define aTHXx my_perl
470# define aTHXx_ aTHXx,
c5be433b 471# define dTHXx dTHX
22c35a8c 472#endif
71be2cbc 473
1de7c2ac
GS
474/* Under PERL_IMPLICIT_SYS (used in Windows for fork emulation)
475 * PerlIO_foo() expands to PL_StdIO->pFOO(PL_StdIO, ...).
476 * dTHXs is therefore needed for all functions using PerlIO_foo(). */
477#ifdef PERL_IMPLICIT_SYS
27da23d5
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478# ifdef PERL_GLOBAL_STRUCT_PRIVATE
479# define dTHXs dVAR; dTHX
480# else
481# define dTHXs dTHX
482# endif
1de7c2ac 483#else
27da23d5
JH
484# ifdef PERL_GLOBAL_STRUCT_PRIVATE
485# define dTHXs dVAR
486# else
487# define dTHXs dNOOP
488# endif
1de7c2ac
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489#endif
490
27da23d5
JH
491/* Some platforms require marking function declarations
492 * for them to be exportable. Used in perlio.h, proto.h
493 * is handled either by the makedef.pl or by defining the
494 * PERL_CALLCONV to be something special. See also the
495 * definition of XS() in XSUB.h. */
496#ifndef PERL_EXPORT_C
a0c21aa1
JH
497# ifdef __cplusplus
498# define PERL_EXPORT_C extern "C"
499# else
500# define PERL_EXPORT_C extern
501# endif
27da23d5
JH
502#endif
503#ifndef PERL_XS_EXPORT_C
a0c21aa1
JH
504# ifdef __cplusplus
505# define PERL_XS_EXPORT_C extern "C"
506# else
507# define PERL_XS_EXPORT_C
508# endif
27da23d5
JH
509#endif
510
5b692037
JH
511#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__cplusplus)
512# ifndef PERL_USE_GCC_BRACE_GROUPS
513# define PERL_USE_GCC_BRACE_GROUPS
514# endif
515#endif
516
728e2803
PP
517/*
518 * STMT_START { statements; } STMT_END;
519 * can be used as a single statement, as in
520 * if (x) STMT_START { ... } STMT_END; else ...
521 *
522 * Trying to select a version that gives no warnings...
523 */
524#if !(defined(STMT_START) && defined(STMT_END))
5b692037 525# ifdef PERL_USE_GCC_BRACE_GROUPS
a0288114 526# define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
728e2803
PP
527# define STMT_END )
528# else
728e2803
PP
529# define STMT_START do
530# define STMT_END while (0)
728e2803
PP
531# endif
532#endif
533
d6f9c181
JH
534#ifndef BYTEORDER /* Should never happen -- byteorder is in config.h */
535# define BYTEORDER 0x1234
79072805
LW
536#endif
537
538/* Overall memory policy? */
539#ifndef CONSERVATIVE
540# define LIBERAL 1
541#endif
542
8ada0baa
JH
543#if 'A' == 65 && 'I' == 73 && 'J' == 74 && 'Z' == 90
544#define ASCIIish
545#else
546#undef ASCIIish
547#endif
548
79072805
LW
549/*
550 * The following contortions are brought to you on behalf of all the
551 * standards, semi-standards, de facto standards, not-so-de-facto standards
552 * of the world, as well as all the other botches anyone ever thought of.
553 * The basic theory is that if we work hard enough here, the rest of the
554 * code can be a lot prettier. Well, so much for theory. Sorry, Henry...
555 */
ac58e20f 556
ee0007ab 557/* define this once if either system, instead of cluttering up the src */
7c458fae 558#if defined(MSDOS) || defined(WIN32) || defined(NETWARE)
ee0007ab
LW
559#define DOSISH 1
560#endif
561
739a0b84 562#if defined(__STDC__) || defined(_AIX) || defined(__stdc__) || defined(__cplusplus) || defined(NETWARE) || defined(__SYMBIAN32__)
352d5a3a
LW
563# define STANDARD_C 1
564#endif
565
8d87852b 566#if defined(__cplusplus) || defined(WIN32) || defined(__sgi) || defined(__EMX__) || defined(__QNX__) || defined(NETWARE) || defined(PERL_MICRO)
68dc0745
PP
567# define DONT_DECLARE_STD 1
568#endif
569
352d5a3a 570#if defined(HASVOLATILE) || defined(STANDARD_C)
79072805 571# define VOL volatile
663a0e37 572#else
79072805 573# define VOL
663a0e37
LW
574#endif
575
284167a5
SM
576/* By compiling a perl with -DNO_TAINT_SUPPORT or -DSILENT_NO_TAINT_SUPPORT,
577 * you get a perl without taint support, but doubtlessly with a lesser
578 * degree of support. Do not do so unless you know exactly what it means
579 * technically, have a good reason to do so, and know exactly how the
580 * perl will be used. perls with -DSILENT_NO_TAINT_SUPPORT are considered
581 * a potential security risk due to flat out ignoring the security-relevant
582 * taint flags. This being said, a perl without taint support compiled in
583 * has marginal run-time performance benefits.
584 * SILENT_NO_TAINT_SUPPORT implies NO_TAINT_SUPPORT.
585 * SILENT_NO_TAINT_SUPPORT is the same as NO_TAINT_SUPPORT except it
586 * silently ignores -t/-T instead of throwing an exception.
053a3618
SM
587 *
588 * DANGER! Using NO_TAINT_SUPPORT or SILENT_NO_TAINT_SUPPORT
6ecb40c7 589 * voids your nonexistent warranty!
284167a5 590 */
dc6d7f5c 591#if defined(SILENT_NO_TAINT_SUPPORT) && !defined(NO_TAINT_SUPPORT)
284167a5
SM
592# define NO_TAINT_SUPPORT 1
593#endif
594
595/* NO_TAINT_SUPPORT can be set to transform virtually all taint-related
596 * operations into no-ops for a very modest speed-up. Enable only if you
597 * know what you're doing: tests and CPAN modules' tests are bound to fail.
598 */
dc6d7f5c 599#ifdef NO_TAINT_SUPPORT
284167a5
SM
600# define TAINT NOOP
601# define TAINT_NOT NOOP
602# define TAINT_IF(c) NOOP
603# define TAINT_ENV() NOOP
604# define TAINT_PROPER(s) NOOP
605# define TAINT_set(s) NOOP
606# define TAINT_get 0
607# define TAINTING_get 0
608# define TAINTING_set(s) NOOP
609# define TAINT_WARN_get 0
610# define TAINT_WARN_set(s) NOOP
611#else
612# define TAINT (PL_tainted = TRUE)
613# define TAINT_NOT (PL_tainted = FALSE)
2439e033
SM
614# define TAINT_IF(c) if (UNLIKELY(c)) { PL_tainted = TRUE; }
615# define TAINT_ENV() if (UNLIKELY(PL_tainting)) { taint_env(); }
616# define TAINT_PROPER(s) if (UNLIKELY(PL_tainting)) { taint_proper(NULL, s); }
284167a5
SM
617# define TAINT_set(s) (PL_tainted = (s))
618# define TAINT_get (PL_tainted)
619# define TAINTING_get (PL_tainting)
620# define TAINTING_set(s) (PL_tainting = (s))
621# define TAINT_WARN_get (PL_taint_warn)
622# define TAINT_WARN_set(s) (PL_taint_warn = (s))
623#endif
a687059c 624
20be6587
DM
625/* flags used internally only within pp_subst and pp_substcont */
626#ifdef PERL_CORE
627# define SUBST_TAINT_STR 1 /* string tainted */
628# define SUBST_TAINT_PAT 2 /* pattern tainted */
629# define SUBST_TAINT_REPL 4 /* replacement tainted */
630# define SUBST_TAINT_RETAINT 8 /* use re'taint' in scope */
631# define SUBST_TAINT_BOOLRET 16 /* return is boolean (don't taint) */
632#endif
633
d460ef45 634/* XXX All process group stuff is handled in pp_sys.c. Should these
a6e633de
PP
635 defines move there? If so, I could simplify this a lot. --AD 9/96.
636*/
637/* Process group stuff changed from traditional BSD to POSIX.
638 perlfunc.pod documents the traditional BSD-style syntax, so we'll
639 try to preserve that, if possible.
640*/
641#ifdef HAS_SETPGID
642# define BSD_SETPGRP(pid, pgrp) setpgid((pid), (pgrp))
c07a80fd 643#else
a6e633de
PP
644# if defined(HAS_SETPGRP) && defined(USE_BSD_SETPGRP)
645# define BSD_SETPGRP(pid, pgrp) setpgrp((pid), (pgrp))
646# else
647# ifdef HAS_SETPGRP2 /* DG/UX */
648# define BSD_SETPGRP(pid, pgrp) setpgrp2((pid), (pgrp))
649# endif
650# endif
651#endif
652#if defined(BSD_SETPGRP) && !defined(HAS_SETPGRP)
653# define HAS_SETPGRP /* Well, effectively it does . . . */
654#endif
655
656/* getpgid isn't POSIX, but at least Solaris and Linux have it, and it makes
657 our life easier :-) so we'll try it.
658*/
659#ifdef HAS_GETPGID
660# define BSD_GETPGRP(pid) getpgid((pid))
661#else
662# if defined(HAS_GETPGRP) && defined(USE_BSD_GETPGRP)
663# define BSD_GETPGRP(pid) getpgrp((pid))
664# else
665# ifdef HAS_GETPGRP2 /* DG/UX */
666# define BSD_GETPGRP(pid) getpgrp2((pid))
667# endif
668# endif
669#endif
670#if defined(BSD_GETPGRP) && !defined(HAS_GETPGRP)
671# define HAS_GETPGRP /* Well, effectively it does . . . */
672#endif
673
d460ef45 674/* These are not exact synonyms, since setpgrp() and getpgrp() may
a6e633de
PP
675 have different behaviors, but perl.h used to define USE_BSDPGRP
676 (prior to 5.003_05) so some extension might depend on it.
677*/
678#if defined(USE_BSD_SETPGRP) || defined(USE_BSD_GETPGRP)
679# ifndef USE_BSDPGRP
680# define USE_BSDPGRP
681# endif
663a0e37
LW
682#endif
683
486ec47a 684/* HP-UX 10.X CMA (Common Multithreaded Architecture) insists that
8ac5a1fe
MH
685 pthread.h must be included before all other header files.
686*/
3db8f154 687#if defined(USE_ITHREADS) && defined(PTHREAD_H_FIRST) && defined(I_PTHREAD)
8ac5a1fe
MH
688# include <pthread.h>
689#endif
690
58ab9e8b 691#include <sys/types.h>
663a0e37 692
760ac839
LW
693#ifdef __cplusplus
694# ifndef I_STDARG
695# define I_STDARG 1
696# endif
697#endif
698
699#ifdef I_STDARG
700# include <stdarg.h>
701#else
702# ifdef I_VARARGS
703# include <varargs.h>
704# endif
705#endif
706
27db2737
JH
707#ifdef I_STDINT
708# include <stdint.h>
709#endif
710
fe14fcc3 711#include <ctype.h>
a0d0e21e
LW
712
713#ifdef METHOD /* Defined by OSF/1 v3.0 by ctype.h */
714#undef METHOD
a0d0e21e
LW
715#endif
716
12ae5dfc
JH
717#ifdef PERL_MICRO
718# define NO_LOCALE
719#endif
720
4633a7c4 721#ifdef I_LOCALE
36477c24 722# include <locale.h>
4633a7c4
LW
723#endif
724
36477c24
PP
725#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
726# define USE_LOCALE
ccd65d51
KW
727# define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
728 capability */
36477c24
PP
729# if !defined(NO_LOCALE_COLLATE) && defined(LC_COLLATE) \
730 && defined(HAS_STRXFRM)
731# define USE_LOCALE_COLLATE
732# endif
733# if !defined(NO_LOCALE_CTYPE) && defined(LC_CTYPE)
734# define USE_LOCALE_CTYPE
735# endif
736# if !defined(NO_LOCALE_NUMERIC) && defined(LC_NUMERIC)
737# define USE_LOCALE_NUMERIC
738# endif
fa9b773e
KW
739# if !defined(NO_LOCALE_MESSAGES) && defined(LC_MESSAGES)
740# define USE_LOCALE_MESSAGES
741# endif
742# if !defined(NO_LOCALE_MONETARY) && defined(LC_MONETARY)
743# define USE_LOCALE_MONETARY
744# endif
56e45410
KW
745# if !defined(NO_LOCALE_TIME) && defined(LC_TIME)
746# define USE_LOCALE_TIME
747# endif
b385bb4d
KW
748# ifndef WIN32 /* No wrapper except on Windows */
749# define my_setlocale(a,b) setlocale(a,b)
750# endif
36477c24 751#endif /* !NO_LOCALE && HAS_SETLOCALE */
a0d0e21e 752
fe14fcc3 753#include <setjmp.h>
79072805 754
a0d0e21e 755#ifdef I_SYS_PARAM
79072805
LW
756# ifdef PARAM_NEEDS_TYPES
757# include <sys/types.h>
758# endif
759# include <sys/param.h>
352d5a3a 760#endif
79072805 761
ce3470dc
AD
762/* On BSD-derived systems, <sys/param.h> defines BSD to a year-month
763 value something like 199306. This may be useful if no more-specific
764 feature test is available.
765*/
766#if defined(BSD)
767# ifndef BSDish
768# define BSDish
769# endif
770#endif
771
79072805 772/* Use all the "standard" definitions? */
a0d0e21e 773#if defined(STANDARD_C) && defined(I_STDLIB)
79072805 774# include <stdlib.h>
ff68c719 775#endif
03a14243 776
3f270f98
JH
777/* If this causes problems, set i_unistd=undef in the hint file. */
778#ifdef I_UNISTD
779# include <unistd.h>
780#endif
781
de8ca8af
NT
782/* for WCOREDUMP */
783#ifdef I_SYS_WAIT
784# include <sys/wait.h>
785#endif
786
9969cdde 787#ifdef __SYMBIAN32__
27da23d5
JH
788# undef _SC_ARG_MAX /* Symbian has _SC_ARG_MAX but no sysconf() */
789#endif
790
21e89b5f 791#if defined(HAS_SYSCALL) && !defined(HAS_SYSCALL_PROTO)
c45598c5 792EXTERN_C int syscall(int, ...);
2ef53570
JH
793#endif
794
21e89b5f 795#if defined(HAS_USLEEP) && !defined(HAS_USLEEP_PROTO)
c45598c5 796EXTERN_C int usleep(unsigned int);
2ef53570
JH
797#endif
798
1109a392
MHM
799#ifdef PERL_CORE
800
801/* macros for correct constant construction */
802# if INTSIZE >= 2
803# define U16_CONST(x) ((U16)x##U)
804# else
805# define U16_CONST(x) ((U16)x##UL)
806# endif
807
808# if INTSIZE >= 4
809# define U32_CONST(x) ((U32)x##U)
810# else
811# define U32_CONST(x) ((U32)x##UL)
812# endif
813
814# ifdef HAS_QUAD
815# if INTSIZE >= 8
816# define U64_CONST(x) ((U64)x##U)
817# elif LONGSIZE >= 8
818# define U64_CONST(x) ((U64)x##UL)
819# elif QUADKIND == QUAD_IS_LONG_LONG
820# define U64_CONST(x) ((U64)x##ULL)
52865553
SH
821# elif QUADKIND == QUAD_IS___INT64
822# define U64_CONST(x) ((U64)x##UI64)
1109a392
MHM
823# else /* best guess we can make */
824# define U64_CONST(x) ((U64)x##UL)
825# endif
826# endif
827
828/* byte-swapping functions for big-/little-endian conversion */
829# define _swab_16_(x) ((U16)( \
830 (((U16)(x) & U16_CONST(0x00ff)) << 8) | \
831 (((U16)(x) & U16_CONST(0xff00)) >> 8) ))
832
833# define _swab_32_(x) ((U32)( \
834 (((U32)(x) & U32_CONST(0x000000ff)) << 24) | \
835 (((U32)(x) & U32_CONST(0x0000ff00)) << 8) | \
836 (((U32)(x) & U32_CONST(0x00ff0000)) >> 8) | \
837 (((U32)(x) & U32_CONST(0xff000000)) >> 24) ))
838
839# ifdef HAS_QUAD
840# define _swab_64_(x) ((U64)( \
841 (((U64)(x) & U64_CONST(0x00000000000000ff)) << 56) | \
842 (((U64)(x) & U64_CONST(0x000000000000ff00)) << 40) | \
843 (((U64)(x) & U64_CONST(0x0000000000ff0000)) << 24) | \
844 (((U64)(x) & U64_CONST(0x00000000ff000000)) << 8) | \
845 (((U64)(x) & U64_CONST(0x000000ff00000000)) >> 8) | \
846 (((U64)(x) & U64_CONST(0x0000ff0000000000)) >> 24) | \
847 (((U64)(x) & U64_CONST(0x00ff000000000000)) >> 40) | \
848 (((U64)(x) & U64_CONST(0xff00000000000000)) >> 56) ))
849# endif
850
9c17f24a
NC
851/* The old value was hard coded at 1008. (4096-16) seems to be a bit faster,
852 at least on FreeBSD. YMMV, so experiment. */
853#ifndef PERL_ARENA_SIZE
854#define PERL_ARENA_SIZE 4080
855#endif
856
ccb2c8b8 857/* Maximum level of recursion */
2b9dff67
RGS
858#ifndef PERL_SUB_DEPTH_WARN
859#define PERL_SUB_DEPTH_WARN 100
ccb2c8b8
RGS
860#endif
861
1109a392
MHM
862#endif /* PERL_CORE */
863
bdf3085f
NC
864/* We no longer default to creating a new SV for GvSV.
865 Do this before embed. */
866#ifndef PERL_CREATE_GVSV
7459f06b
NC
867# ifndef PERL_DONT_CREATE_GVSV
868# define PERL_DONT_CREATE_GVSV
869# endif
bdf3085f
NC
870#endif
871
ca0c25f6
NC
872#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
873#define PERL_USES_PL_PIDSTATUS
874#endif
875
739a0b84 876#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(__SYMBIAN32__)
a62746fa
RGS
877#define PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION
878#endif
879
c31fac66
GS
880#define MEM_SIZE Size_t
881
1936d2a7
NC
882/* Round all values passed to malloc up, by default to a multiple of
883 sizeof(size_t)
884*/
885#ifndef PERL_STRLEN_ROUNDUP_QUANTUM
886#define PERL_STRLEN_ROUNDUP_QUANTUM Size_t_size
887#endif
888
f1200559
WH
889/* sv_grow() will expand strings by at least a certain percentage of
890 the previously *used* length to avoid excessive calls to realloc().
891 The default is 25% of the current length.
892*/
893#ifndef PERL_STRLEN_EXPAND_SHIFT
894# define PERL_STRLEN_EXPAND_SHIFT 2
895#endif
896
3800c318 897#if defined(STANDARD_C) && defined(I_STDDEF) && !defined(PERL_GCC_PEDANTIC)
51371543
GS
898# include <stddef.h>
899# define STRUCT_OFFSET(s,m) offsetof(s,m)
900#else
901# define STRUCT_OFFSET(s,m) (Size_t)(&(((s *)0)->m))
d0b86e2f
BF
902#endif
903
904/* ptrdiff_t is C11, so undef it under pedantic builds */
905#ifdef PERL_GCC_PEDANTIC
906# undef HAS_PTRDIFF_T
51371543
GS
907#endif
908
9969cdde 909#ifndef __SYMBIAN32__
27da23d5
JH
910# if defined(I_STRING) || defined(__cplusplus)
911# include <string.h>
912# else
913# include <strings.h>
914# endif
51371543
GS
915#endif
916
55497cff
PP
917/* This comes after <stdlib.h> so we don't try to change the standard
918 * library prototypes; we'll use our own in proto.h instead. */
03a14243 919
4633a7c4 920#ifdef MYMALLOC
86058a2d 921# ifdef PERL_POLLUTE_MALLOC
ee13e175 922# ifndef PERL_EXTMALLOC_DEF
86058a2d
GS
923# define Perl_malloc malloc
924# define Perl_calloc calloc
925# define Perl_realloc realloc
926# define Perl_mfree free
ee13e175 927# endif
86058a2d
GS
928# else
929# define EMBEDMYMALLOC /* for compatibility */
930# endif
827e134a 931
651b9576
GS
932# define safemalloc Perl_malloc
933# define safecalloc Perl_calloc
934# define saferealloc Perl_realloc
935# define safefree Perl_mfree
22f7c9c9
JH
936# define CHECK_MALLOC_TOO_LATE_FOR_(code) STMT_START { \
937 if (!PL_tainting && MallocCfg_ptr[MallocCfg_cfg_env_read]) \
938 code; \
939 } STMT_END
940# define CHECK_MALLOC_TOO_LATE_FOR(ch) \
941 CHECK_MALLOC_TOO_LATE_FOR_(MALLOC_TOO_LATE_FOR(ch))
942# define panic_write2(s) write(2, s, strlen(s))
943# define CHECK_MALLOC_TAINT(newval) \
944 CHECK_MALLOC_TOO_LATE_FOR_( \
945 if (newval) { \
acfd4d8e 946 PERL_UNUSED_RESULT(panic_write2("panic: tainting with $ENV{PERL_MALLOC_OPT}\n"));\
22f7c9c9 947 exit(1); })
22f7c9c9 948# define MALLOC_CHECK_TAINT(argc,argv,env) STMT_START { \
b0891165 949 if (doing_taint(argc,argv,env)) { \
22f7c9c9
JH
950 MallocCfg_ptr[MallocCfg_skip_cfg_env] = 1; \
951 }} STMT_END;
f2517201
GS
952#else /* MYMALLOC */
953# define safemalloc safesysmalloc
954# define safecalloc safesyscalloc
955# define saferealloc safesysrealloc
956# define safefree safesysfree
22f7c9c9
JH
957# define CHECK_MALLOC_TOO_LATE_FOR(ch) ((void)0)
958# define CHECK_MALLOC_TAINT(newval) ((void)0)
959# define MALLOC_CHECK_TAINT(argc,argv,env)
55497cff 960#endif /* MYMALLOC */
4633a7c4 961
fe13d51d 962/* diag_listed_as: "-T" is on the #! line, it must also be used on the command line */
27da23d5 963#define TOO_LATE_FOR_(ch,what) Perl_croak(aTHX_ "\"-%c\" is on the #! line, it must also be used on the command line%s", (char)(ch), what)
22f7c9c9
JH
964#define TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, "")
965#define MALLOC_TOO_LATE_FOR(ch) TOO_LATE_FOR_(ch, " with $ENV{PERL_MALLOC_OPT}")
966#define MALLOC_CHECK_TAINT2(argc,argv) MALLOC_CHECK_TAINT(argc,argv,NULL)
967
a0d0e21e
LW
968#if !defined(HAS_STRCHR) && defined(HAS_INDEX) && !defined(strchr)
969#define strchr index
970#define strrchr rindex
971#endif
972
16d20bd9
AD
973#ifdef I_MEMORY
974# include <memory.h>
975#endif
976
fe14fcc3 977#ifdef HAS_MEMCPY
85e6fe83 978# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
fe14fcc3 979# ifndef memcpy
20ce7b12 980 extern char * memcpy (char*, char*, int);
ee0007ab
LW
981# endif
982# endif
983#else
984# ifndef memcpy
985# ifdef HAS_BCOPY
986# define memcpy(d,s,l) bcopy(s,d,l)
987# else
988# define memcpy(d,s,l) my_bcopy(s,d,l)
989# endif
990# endif
991#endif /* HAS_MEMCPY */
fe14fcc3 992
ee0007ab 993#ifdef HAS_MEMSET
85e6fe83 994# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
ee0007ab 995# ifndef memset
20ce7b12 996 extern char *memset (char*, int, int);
ee0007ab
LW
997# endif
998# endif
ee0007ab 999#else
12ae5dfc 1000# undef memset
fc36a67e 1001# define memset(d,c,l) my_memset(d,c,l)
ee0007ab
LW
1002#endif /* HAS_MEMSET */
1003
85e6fe83 1004#if !defined(HAS_MEMMOVE) && !defined(memmove)
2304df62 1005# if defined(HAS_BCOPY) && defined(HAS_SAFE_BCOPY)
79072805
LW
1006# define memmove(d,s,l) bcopy(s,d,l)
1007# else
2304df62 1008# if defined(HAS_MEMCPY) && defined(HAS_SAFE_MEMCPY)
79072805 1009# define memmove(d,s,l) memcpy(d,s,l)
ee0007ab 1010# else
79072805 1011# define memmove(d,s,l) my_bcopy(s,d,l)
ee0007ab 1012# endif
352d5a3a 1013# endif
d9d8d8de 1014#endif
ee0007ab 1015
36477c24
PP
1016#if defined(mips) && defined(ultrix) && !defined(__STDC__)
1017# undef HAS_MEMCMP
1018#endif
1019
1020#if defined(HAS_MEMCMP) && defined(HAS_SANE_MEMCMP)
85e6fe83 1021# if !defined(STANDARD_C) && !defined(I_STRING) && !defined(I_MEMORY)
ee0007ab 1022# ifndef memcmp
20ce7b12 1023 extern int memcmp (char*, char*, int);
ee0007ab
LW
1024# endif
1025# endif
1026#else
1027# ifndef memcmp
ecfc5424 1028# define memcmp my_memcmp
352d5a3a 1029# endif
36477c24 1030#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */
8d063cd8 1031
fc36a67e 1032#ifndef memzero
c635e13b
PP
1033# ifdef HAS_MEMSET
1034# define memzero(d,l) memset(d,0,l)
79072805 1035# else
c635e13b
PP
1036# ifdef HAS_BZERO
1037# define memzero(d,l) bzero(d,l)
79072805 1038# else
fc36a67e 1039# define memzero(d,l) my_bzero(d,l)
79072805
LW
1040# endif
1041# endif
d9d8d8de 1042#endif
378cc40b 1043
2f42fcb0 1044#ifndef PERL_MICRO
0f27ced1
JH
1045#ifndef memchr
1046# ifndef HAS_MEMCHR
1047# define memchr(s,c,n) ninstr((char*)(s), ((char*)(s)) + n, &(c), &(c) + 1)
1048# endif
1049#endif
2f42fcb0 1050#endif
0f27ced1 1051
36477c24
PP
1052#ifndef HAS_BCMP
1053# ifndef bcmp
1054# define bcmp(s1,s2,l) memcmp(s1,s2,l)
79072805 1055# endif
36477c24 1056#endif /* !HAS_BCMP */
378cc40b 1057
ae986130 1058#ifdef I_NETINET_IN
79072805 1059# include <netinet/in.h>
ae986130
LW
1060#endif
1061
28e8609d
JH
1062#ifdef I_ARPA_INET
1063# include <arpa/inet.h>
1064#endif
1065
1aef975c 1066#ifdef I_SYS_STAT
84902520 1067# include <sys/stat.h>
1aef975c 1068#endif
79072805 1069
287a962e
JD
1070/* Microsoft VC's sys/stat.h defines all S_Ixxx macros except S_IFIFO.
1071 This definition should ideally go into win32/win32.h, but S_IFIFO is
1072 used later here in perl.h before win32/win32.h is being included. */
1073#if !defined(S_IFIFO) && defined(_S_IFIFO)
1074# define S_IFIFO _S_IFIFO
1075#endif
1076
cc3315ba 1077/* The stat macros for Unisoft System V/88 (and derivatives
a0d0e21e
LW
1078 like UTekV) are broken, sometimes giving false positives. Undefine
1079 them here and let the code below set them to proper values.
1080
1081 The ghs macro stands for GreenHills Software C-1.8.5 which
1082 is the C compiler for sysV88 and the various derivatives.
1083 This header file bug is corrected in gcc-2.5.8 and later versions.
1084 --Kaveh Ghazi (ghazi@noc.rutgers.edu) 10/3/94. */
1085
cc3315ba 1086#if defined(m88k) && defined(ghs)
79072805
LW
1087# undef S_ISDIR
1088# undef S_ISCHR
1089# undef S_ISBLK
1090# undef S_ISREG
1091# undef S_ISFIFO
1092# undef S_ISLNK
ee0007ab 1093#endif
135863df 1094
663a0e37
LW
1095#ifdef I_TIME
1096# include <time.h>
ffed7fef 1097#endif
663a0e37 1098
fe14fcc3 1099#ifdef I_SYS_TIME
85e6fe83 1100# ifdef I_SYS_TIME_KERNEL
663a0e37
LW
1101# define KERNEL
1102# endif
1103# include <sys/time.h>
85e6fe83 1104# ifdef I_SYS_TIME_KERNEL
663a0e37
LW
1105# undef KERNEL
1106# endif
a687059c 1107#endif
135863df 1108
55497cff 1109#if defined(HAS_TIMES) && defined(I_SYS_TIMES)
85e6fe83 1110# include <sys/times.h>
d9d8d8de 1111#endif
8d063cd8 1112
fe14fcc3 1113#if defined(HAS_STRERROR) && (!defined(HAS_MKDIR) || !defined(HAS_RMDIR))
79072805 1114# undef HAS_STRERROR
663a0e37
LW
1115#endif
1116
1117#include <errno.h>
1e743fda 1118
acfe0abc 1119#if defined(WIN32) && defined(PERL_IMPLICIT_SYS)
b4748376
NIS
1120# define WIN32SCK_IS_STDSCK /* don't pull in custom wsock layer */
1121#endif
1122
8cfab5ff 1123/* In Tru64 use the 4.4BSD struct msghdr, not the 4.3 one.
00f254e2 1124 * This is important for using IPv6.
8cfab5ff
JH
1125 * For OSF/1 3.2, however, defining _SOCKADDR_LEN would be
1126 * a bad idea since it breaks send() and recv(). */
1127#if defined(__osf__) && defined(__alpha) && !defined(_SOCKADDR_LEN) && !defined(DEC_OSF1_3_X)
1128# define _SOCKADDR_LEN
1129#endif
1130
da70cfc6 1131#if defined(HAS_SOCKET) && !defined(WIN32) /* WIN32 handles sockets via win32.h */
1e743fda
JH
1132# include <sys/socket.h>
1133# if defined(USE_SOCKS) && defined(I_SOCKS)
1134# if !defined(INCLUDE_PROTOTYPES)
1135# define INCLUDE_PROTOTYPES /* for <socks.h> */
1136# define PERL_SOCKS_NEED_PROTOTYPES
1137# endif
1138# include <socks.h>
1139# ifdef PERL_SOCKS_NEED_PROTOTYPES /* keep cpp space clean */
1140# undef INCLUDE_PROTOTYPES
1141# undef PERL_SOCKS_NEED_PROTOTYPES
ed6116ce 1142# endif
d460ef45 1143# endif
1e743fda 1144# ifdef I_NETDB
2986a63f
JH
1145# ifdef NETWARE
1146# include<stdio.h>
1147# endif
1e743fda
JH
1148# include <netdb.h>
1149# endif
1150# ifndef ENOTSOCK
1151# ifdef I_NET_ERRNO
1152# include <net/errno.h>
1153# endif
1154# endif
1155#endif
1156
fa0a29af 1157/* sockatmark() is so new (2001) that many places might have it hidden
29820b6d
MHM
1158 * behind some -D_BLAH_BLAH_SOURCE guard. The __THROW magic is required
1159 * e.g. in Gentoo, see http://bugs.gentoo.org/show_bug.cgi?id=12605 */
fa0a29af 1160#if defined(HAS_SOCKATMARK) && !defined(HAS_SOCKATMARK_PROTO)
29820b6d
MHM
1161# if defined(__THROW) && defined(__GLIBC__)
1162int sockatmark(int) __THROW;
1163# else
2ef53570 1164int sockatmark(int);
29820b6d 1165# endif
2ef53570
JH
1166#endif
1167
7e827271 1168#if defined(__osf__) && defined(__cplusplus) && !defined(_XOPEN_SOURCE_EXTENDED) /* Tru64 "cxx" (C++), see hints/dec_osf.sh for why the _XOPEN_SOURCE_EXTENDED cannot be defined. */
45d3b546
JH
1169EXTERN_C int fchdir(int);
1170EXTERN_C int flock(int, int);
1171EXTERN_C int fseeko(FILE *, off_t, int);
1172EXTERN_C off_t ftello(FILE *);
1173#endif
1174
7e827271 1175#if defined(__SUNPRO_CC) /* SUNWspro CC (C++) */
1ccb7c8d 1176EXTERN_C char *crypt(const char *, const char *);
7e827271 1177EXTERN_C char **environ;
1ccb7c8d
JH
1178#endif
1179
83a6ff2e 1180#if defined(__cplusplus)
ce3470dc 1181# if defined(BSDish)
b91fbb93 1182EXTERN_C char **environ;
83a6ff2e 1183# elif defined(__CYGWIN__)
667e2948
SP
1184EXTERN_C char *crypt(const char *, const char *);
1185#endif
83a6ff2e 1186#endif
667e2948 1187
1e743fda
JH
1188#ifdef SETERRNO
1189# undef SETERRNO /* SOCKS might have defined this */
ed6116ce 1190#endif
f86702cc
PP
1191
1192#ifdef VMS
1193# define SETERRNO(errcode,vmserrcode) \
1194 STMT_START { \
1195 set_errno(errcode); \
1196 set_vaxc_errno(vmserrcode); \
1197 } STMT_END
4ee39169
CS
1198# define dSAVEDERRNO int saved_errno; unsigned saved_vms_errno
1199# define dSAVE_ERRNO int saved_errno = errno; unsigned saved_vms_errno = vaxc$errno
1200# define SAVE_ERRNO ( saved_errno = errno, saved_vms_errno = vaxc$errno )
1201# define RESTORE_ERRNO SETERRNO(saved_errno, saved_vms_errno)
1202
93189314
JH
1203# define LIB_INVARG LIB$_INVARG
1204# define RMS_DIR RMS$_DIR
1205# define RMS_FAC RMS$_FAC
1206# define RMS_FEX RMS$_FEX
1207# define RMS_FNF RMS$_FNF
1208# define RMS_IFI RMS$_IFI
1209# define RMS_ISI RMS$_ISI
1210# define RMS_PRV RMS$_PRV
1211# define SS_ACCVIO SS$_ACCVIO
1212# define SS_DEVOFFLINE SS$_DEVOFFLINE
1213# define SS_IVCHAN SS$_IVCHAN
1214# define SS_NORMAL SS$_NORMAL
8a9f18be 1215# define SS_NOPRIV SS$_NOPRIV
748a9306 1216#else
93189314
JH
1217# define LIB_INVARG 0
1218# define RMS_DIR 0
1219# define RMS_FAC 0
1220# define RMS_FEX 0
1221# define RMS_FNF 0
1222# define RMS_IFI 0
1223# define RMS_ISI 0
1224# define RMS_PRV 0
1225# define SS_ACCVIO 0
1226# define SS_DEVOFFLINE 0
1227# define SS_IVCHAN 0
1228# define SS_NORMAL 0
8a9f18be 1229# define SS_NOPRIV 0
748a9306 1230#endif
ed6116ce 1231
6ca940a9
TC
1232#ifdef WIN32
1233# define dSAVEDERRNO int saved_errno; DWORD saved_win32_errno
1234# define dSAVE_ERRNO int saved_errno = errno; DWORD saved_win32_errno = GetLastError()
1235# define SAVE_ERRNO ( saved_errno = errno, saved_win32_errno = GetLastError() )
1236# define RESTORE_ERRNO ( errno = saved_errno, SetLastError(saved_win32_errno) )
1237#endif
1238
1239#ifdef OS2
1240# define dSAVEDERRNO int saved_errno; unsigned long saved_os2_errno
1241# define dSAVE_ERRNO int saved_errno = errno; unsigned long saved_os2_errno = Perl_rc
1242# define SAVE_ERRNO ( saved_errno = errno, saved_os2_errno = Perl_rc )
1243# define RESTORE_ERRNO ( errno = saved_errno, Perl_rc = saved_os2_errno )
1244#endif
1245
1246#ifndef SETERRNO
1247# define SETERRNO(errcode,vmserrcode) (errno = (errcode))
1248#endif
1249
1250#ifndef dSAVEDERRNO
1251# define dSAVEDERRNO int saved_errno
1252# define dSAVE_ERRNO int saved_errno = errno
1253# define SAVE_ERRNO (saved_errno = errno)
1254# define RESTORE_ERRNO (errno = saved_errno)
1255#endif
1256
f5fa9033 1257#define ERRSV GvSVn(PL_errgv)
dfd167e9
NC
1258
1259#define CLEAR_ERRSV() STMT_START { \
1260 if (!GvSV(PL_errgv)) { \
1261 sv_setpvs(GvSV(gv_add_by_type(PL_errgv, SVt_PV)), ""); \
1262 } else if (SvREADONLY(GvSV(PL_errgv))) { \
1263 SvREFCNT_dec(GvSV(PL_errgv)); \
1264 GvSV(PL_errgv) = newSVpvs(""); \
1265 } else { \
1266 SV *const errsv = GvSV(PL_errgv); \
1267 sv_setpvs(errsv, ""); \
1268 if (SvMAGICAL(errsv)) { \
1269 mg_free(errsv); \
1270 } \
1271 SvPOK_only(errsv); \
1272 } \
1273 } STMT_END
1274
1275
414bf5ae
MHM
1276#ifdef PERL_CORE
1277# define DEFSV (0 + GvSVn(PL_defgv))
55b5114f
FC
1278# define DEFSV_set(sv) \
1279 (SvREFCNT_dec(GvSV(PL_defgv)), GvSV(PL_defgv) = SvREFCNT_inc(sv))
1280# define SAVE_DEFSV \
1281 ( \
1282 save_gp(PL_defgv, 0), \
1283 GvINTRO_off(PL_defgv), \
1284 SAVEGENERICSV(GvSV(PL_defgv)), \
1285 GvSV(PL_defgv) = NULL \
1286 )
414bf5ae
MHM
1287#else
1288# define DEFSV GvSVn(PL_defgv)
55b5114f
FC
1289# define DEFSV_set(sv) (GvSV(PL_defgv) = (sv))
1290# define SAVE_DEFSV SAVESPTR(GvSV(PL_defgv))
414bf5ae 1291#endif
38a03e6e 1292
55497cff 1293#ifndef errno
5ff3f7a4
GS
1294 extern int errno; /* ANSI allows errno to be an lvalue expr.
1295 * For example in multithreaded environments
1296 * something like this might happen:
1297 * extern int *_errno(void);
1298 * #define errno (*_errno()) */
d9d8d8de 1299#endif
663a0e37 1300
7e996671
KW
1301#define UNKNOWN_ERRNO_MSG "(unknown)"
1302
2304df62 1303#ifdef HAS_STRERROR
b3e384bf 1304# ifndef DONT_DECLARE_STD
a0d0e21e 1305# ifdef VMS
20ce7b12 1306 char *strerror (int,...);
a0d0e21e 1307# else
20ce7b12 1308 char *strerror (int);
a0d0e21e 1309# endif
b3e384bf
KW
1310# endif
1311# ifndef Strerror
1312# define Strerror strerror
1313# endif
2304df62
AD
1314#else
1315# ifdef HAS_SYS_ERRLIST
79072805
LW
1316 extern int sys_nerr;
1317 extern char *sys_errlist[];
2304df62
AD
1318# ifndef Strerror
1319# define Strerror(e) \
7e996671 1320 ((e) < 0 || (e) >= sys_nerr ? UNKNOWN_ERRNO_MSG : sys_errlist[e])
2304df62 1321# endif
79072805 1322# endif
35c8bce7 1323#endif
663a0e37 1324
2304df62 1325#ifdef I_SYS_IOCTL
79072805
LW
1326# ifndef _IOCTL_
1327# include <sys/ioctl.h>
1328# endif
a687059c
LW
1329#endif
1330
ee0007ab 1331#if defined(mc300) || defined(mc500) || defined(mc700) || defined(mc6000)
79072805
LW
1332# ifdef HAS_SOCKETPAIR
1333# undef HAS_SOCKETPAIR
1334# endif
2304df62
AD
1335# ifdef I_NDBM
1336# undef I_NDBM
79072805 1337# endif
a687059c
LW
1338#endif
1339
02fc2eee
NC
1340#ifndef HAS_SOCKETPAIR
1341# ifdef HAS_SOCKET
1342# define socketpair Perl_my_socketpair
1343# endif
1344#endif
1345
a687059c 1346#if INTSIZE == 2
79072805
LW
1347# define htoni htons
1348# define ntohi ntohs
a687059c 1349#else
79072805
LW
1350# define htoni htonl
1351# define ntohi ntohl
a687059c
LW
1352#endif
1353
a0d0e21e 1354/* Configure already sets Direntry_t */
35c8bce7 1355#if defined(I_DIRENT)
663a0e37 1356# include <dirent.h>
ae986130 1357#else
fe14fcc3 1358# ifdef I_SYS_NDIR
79a0689e 1359# include <sys/ndir.h>
663a0e37 1360# else
fe14fcc3 1361# ifdef I_SYS_DIR
79a0689e
LW
1362# ifdef hp9000s500
1363# include <ndir.h> /* may be wrong in the future */
1364# else
1365# include <sys/dir.h>
1366# endif
663a0e37
LW
1367# endif
1368# endif
4633a7c4 1369#endif
a687059c 1370
c623bd54
LW
1371/*
1372 * The following gobbledygook brought to you on behalf of __STDC__.
1373 * (I could just use #ifndef __STDC__, but this is more bulletproof
1374 * in the face of half-implementations.)
1375 */
1376
21e89b5f 1377#if defined(I_SYSMODE)
ca6e1c26
JH
1378#include <sys/mode.h>
1379#endif
1380
c623bd54
LW
1381#ifndef S_IFMT
1382# ifdef _S_IFMT
1383# define S_IFMT _S_IFMT
1384# else
1385# define S_IFMT 0170000
1386# endif
1387#endif
1388
1389#ifndef S_ISDIR
1390# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
1391#endif
1392
1393#ifndef S_ISCHR
1394# define S_ISCHR(m) ((m & S_IFMT) == S_IFCHR)
1395#endif
1396
1397#ifndef S_ISBLK
fe14fcc3
LW
1398# ifdef S_IFBLK
1399# define S_ISBLK(m) ((m & S_IFMT) == S_IFBLK)
1400# else
1401# define S_ISBLK(m) (0)
1402# endif
c623bd54
LW
1403#endif
1404
1405#ifndef S_ISREG
1406# define S_ISREG(m) ((m & S_IFMT) == S_IFREG)
1407#endif
1408
1409#ifndef S_ISFIFO
fe14fcc3
LW
1410# ifdef S_IFIFO
1411# define S_ISFIFO(m) ((m & S_IFMT) == S_IFIFO)
1412# else
1413# define S_ISFIFO(m) (0)
1414# endif
c623bd54
LW
1415#endif
1416
1417#ifndef S_ISLNK
1418# ifdef _S_ISLNK
1419# define S_ISLNK(m) _S_ISLNK(m)
1420# else
1421# ifdef _S_IFLNK
1422# define S_ISLNK(m) ((m & S_IFMT) == _S_IFLNK)
1423# else
1424# ifdef S_IFLNK
1425# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
1426# else
1427# define S_ISLNK(m) (0)
1428# endif
1429# endif
1430# endif
1431#endif
1432
1433#ifndef S_ISSOCK
1434# ifdef _S_ISSOCK
1435# define S_ISSOCK(m) _S_ISSOCK(m)
1436# else
1437# ifdef _S_IFSOCK
1438# define S_ISSOCK(m) ((m & S_IFMT) == _S_IFSOCK)
1439# else
1440# ifdef S_IFSOCK
1441# define S_ISSOCK(m) ((m & S_IFMT) == S_IFSOCK)
1442# else
1443# define S_ISSOCK(m) (0)
1444# endif
1445# endif
1446# endif
1447#endif
1448
1449#ifndef S_IRUSR
1450# ifdef S_IREAD
1451# define S_IRUSR S_IREAD
1452# define S_IWUSR S_IWRITE
1453# define S_IXUSR S_IEXEC
1454# else
1455# define S_IRUSR 0400
1456# define S_IWUSR 0200
1457# define S_IXUSR 0100
1458# endif
fac7cdfc 1459#endif
1460
1461#ifndef S_IRGRP
1462# ifdef S_IRUSR
1463# define S_IRGRP (S_IRUSR>>3)
1464# define S_IWGRP (S_IWUSR>>3)
1465# define S_IXGRP (S_IXUSR>>3)
1466# else
1467# define S_IRGRP 0040
1468# define S_IWGRP 0020
1469# define S_IXGRP 0010
1470# endif
1471#endif
1472
1473#ifndef S_IROTH
1474# ifdef S_IRUSR
1475# define S_IROTH (S_IRUSR>>6)
1476# define S_IWOTH (S_IWUSR>>6)
1477# define S_IXOTH (S_IXUSR>>6)
1478# else
1479# define S_IROTH 0040
1480# define S_IWOTH 0020
1481# define S_IXOTH 0010
1482# endif
c623bd54
LW
1483#endif
1484
1485#ifndef S_ISUID
1486# define S_ISUID 04000
1487#endif
1488
1489#ifndef S_ISGID
1490# define S_ISGID 02000
1491#endif
1492
ca6e1c26
JH
1493#ifndef S_IRWXU
1494# define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
d460ef45 1495#endif
ca6e1c26
JH
1496
1497#ifndef S_IRWXG
1498# define S_IRWXG (S_IRGRP|S_IWGRP|S_IXGRP)
d460ef45 1499#endif
ca6e1c26
JH
1500
1501#ifndef S_IRWXO
1502# define S_IRWXO (S_IROTH|S_IWOTH|S_IXOTH)
d460ef45 1503#endif
ca6e1c26 1504
b6c36746 1505/* Haiku R1 seems to define S_IREAD and S_IWRITE in <posix/fcntl.h>
c21fb2b8
JH
1506 * which would get included through <sys/file.h >, but that is 3000
1507 * lines in the future. --jhi */
1508
b6c36746 1509#if !defined(S_IREAD) && !defined(__HAIKU__)
ca6e1c26
JH
1510# define S_IREAD S_IRUSR
1511#endif
1512
b6c36746 1513#if !defined(S_IWRITE) && !defined(__HAIKU__)
ca6e1c26
JH
1514# define S_IWRITE S_IWUSR
1515#endif
1516
1517#ifndef S_IEXEC
1518# define S_IEXEC S_IXUSR
1519#endif
1520
a0d0e21e 1521#if defined(cray) || defined(gould) || defined(i860) || defined(pyr)
45d8adaa
LW
1522# define SLOPPYDIVIDE
1523#endif
1524
748a9306
LW
1525#ifdef UV
1526#undef UV
1527#endif
1528
ce582cee
NC
1529/* For the times when you want the return value of sprintf, and you want it
1530 to be the length. Can't have a thread variable passed in, because C89 has
1531 no varargs macros.
1532*/
1533#ifdef SPRINTF_RETURNS_STRLEN
1534# define my_sprintf sprintf
1535#else
1536# define my_sprintf Perl_my_sprintf
1537#endif
1538
5b692037
JH
1539/*
1540 * If we have v?snprintf() and the C99 variadic macros, we can just
1541 * use just the v?snprintf(). It is nice to try to trap the buffer
1542 * overflow, however, so if we are DEBUGGING, and we cannot use the
e5afc1ae
DD
1543 * gcc statement expressions, then use the function wrappers which try
1544 * to trap the overflow. If we can use the gcc statement expressions,
1545 * we can try that even with the version that uses the C99 variadic
1546 * macros.
5b692037
JH
1547 */
1548
1208b3dd
JH
1549/* Note that we do not check against snprintf()/vsnprintf() returning
1550 * negative values because that is non-standard behaviour and we use
1551 * snprintf/vsnprintf only iff HAS_VSNPRINTF has been defined, and
1552 * that should be true only if the snprintf()/vsnprintf() are true
1553 * to the standard. */
1554
e8549682
JH
1555#define PERL_SNPRINTF_CHECK(len, max, api) STMT_START { if ((max) > 0 && (Size_t)len >= (max)) Perl_croak_nocontext("panic: %s buffer overflow", STRINGIFY(api)); } STMT_END
1556
dfeee9b1 1557#if defined(HAS_SNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1558# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1559# define my_snprintf(buffer, max, ...) ({ int len = snprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, snprintf); len; })
1208b3dd 1560# define PERL_MY_SNPRINTF_GUARDED
5b692037 1561# else
e8549682 1562# define my_snprintf(buffer, max, ...) snprintf(buffer, max, __VA_ARGS__)
5b692037
JH
1563# endif
1564#else
1565# define my_snprintf Perl_my_snprintf
1208b3dd 1566# define PERL_MY_SNPRINTF_GUARDED
5b692037
JH
1567#endif
1568
dfeee9b1 1569#if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
5b692037 1570# ifdef PERL_USE_GCC_BRACE_GROUPS
e8549682 1571# define my_vsnprintf(buffer, max, ...) ({ int len = vsnprintf(buffer, max, __VA_ARGS__); PERL_SNPRINTF_CHECK(len, max, vsnprintf); len; })
1208b3dd 1572# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1573# else
e8549682 1574# define my_vsnprintf(buffer, max, ...) vsnprintf(buffer, max, __VA_ARGS__)
5b692037
JH
1575# endif
1576#else
1577# define my_vsnprintf Perl_my_vsnprintf
1208b3dd 1578# define PERL_MY_VSNPRINTF_GUARDED
5b692037 1579#endif
d9fad198 1580
e8549682
JH
1581/* You will definitely need to use the PERL_MY_SNPRINTF_POST_GUARD()
1582 * or PERL_MY_VSNPRINTF_POST_GUARD() if you otherwise decide to ignore
1583 * the result of my_snprintf() or my_vsnprintf(). (No, you should not
1584 * completely ignore it: otherwise you cannot know whether your output
1585 * was too long.)
1586 *
1587 * int len = my_sprintf(buf, max, ...);
1588 * PERL_MY_SNPRINTF_POST_GUARD(len, max);
1589 *
1590 * The trick is that in certain platforms [a] the my_sprintf() already
1591 * contains the sanity check, while in certain platforms [b] it needs
1592 * to be done as a separate step. The POST_GUARD is that step-- in [a]
1593 * platforms the POST_GUARD actually does nothing since the check has
1594 * already been done. Watch out for the max being the same in both calls.
1595 *
1596 * If you actually use the snprintf/vsnprintf return value already,
1597 * you assumedly are checking its validity somehow. But you can
1598 * insert the POST_GUARD() also in that case. */
1599
1600#ifndef PERL_MY_SNPRINTF_GUARDED
1601# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, snprintf)
1602#else
1603# define PERL_MY_SNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1604#endif
1605
1606#ifndef PERL_MY_VSNPRINTF_GUARDED
1607# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_SNPRINTF_CHECK(len, max, vsnprintf)
1608#else
1609# define PERL_MY_VSNPRINTF_POST_GUARD(len, max) PERL_UNUSED_VAR(len)
1610#endif
1611
a6cc4119
SP
1612#ifdef HAS_STRLCAT
1613# define my_strlcat strlcat
1614#else
1615# define my_strlcat Perl_my_strlcat
1616#endif
1617
1618#ifdef HAS_STRLCPY
1619# define my_strlcpy strlcpy
1620#else
1621# define my_strlcpy Perl_my_strlcpy
1622#endif
1623
05f13f53 1624/*
27d4fb96
PP
1625 The IV type is supposed to be long enough to hold any integral
1626 value or a pointer.
1627 --Andy Dougherty August 1996
1628*/
1629
a22e52b9
JH
1630typedef IVTYPE IV;
1631typedef UVTYPE UV;
8175356b 1632
10cc9d2a 1633#if defined(USE_64_BIT_INT) && defined(HAS_QUAD)
6b8eaf93 1634# if QUADKIND == QUAD_IS_INT64_T && defined(INT64_MAX)
5ff3f7a4
GS
1635# define IV_MAX INT64_MAX
1636# define IV_MIN INT64_MIN
1637# define UV_MAX UINT64_MAX
cae7ae48
JH
1638# ifndef UINT64_MIN
1639# define UINT64_MIN 0
1640# endif
5ff3f7a4
GS
1641# define UV_MIN UINT64_MIN
1642# else
1643# define IV_MAX PERL_QUAD_MAX
1644# define IV_MIN PERL_QUAD_MIN
1645# define UV_MAX PERL_UQUAD_MAX
1646# define UV_MIN PERL_UQUAD_MIN
1647# endif
cf2093f6
JH
1648# define IV_IS_QUAD
1649# define UV_IS_QUAD
79072805 1650#else
8175356b 1651# if defined(INT32_MAX) && IVSIZE == 4
5ff3f7a4
GS
1652# define IV_MAX INT32_MAX
1653# define IV_MIN INT32_MIN
716026f9
DL
1654# ifndef UINT32_MAX_BROKEN /* e.g. HP-UX with gcc messes this up */
1655# define UV_MAX UINT32_MAX
1656# else
1657# define UV_MAX 4294967295U
1658# endif
cae7ae48
JH
1659# ifndef UINT32_MIN
1660# define UINT32_MIN 0
1661# endif
5ff3f7a4
GS
1662# define UV_MIN UINT32_MIN
1663# else
1664# define IV_MAX PERL_LONG_MAX
1665# define IV_MIN PERL_LONG_MIN
1666# define UV_MAX PERL_ULONG_MAX
1667# define UV_MIN PERL_ULONG_MIN
1668# endif
8175356b 1669# if IVSIZE == 8
cf2093f6
JH
1670# define IV_IS_QUAD
1671# define UV_IS_QUAD
de1c2614
JH
1672# ifndef HAS_QUAD
1673# define HAS_QUAD
1674# endif
cf2093f6
JH
1675# else
1676# undef IV_IS_QUAD
1677# undef UV_IS_QUAD
9ea40801 1678#if !defined(PERL_CORE) || defined(USING_MSVC6)
e25d460c
NC
1679/* We think that removing this decade-old undef this will cause too much
1680 breakage on CPAN for too little gain. (See RT #119753)
9ea40801
SH
1681 However, we do need HAS_QUAD in the core for use by the drand48 code,
1682 but not for Win32 VC6 because it has poor __int64 support. */
cb4b14d5 1683# undef HAS_QUAD
e25d460c 1684#endif
cf2093f6 1685# endif
79072805 1686#endif
d7d93a81 1687
6313e544
JH
1688#define Size_t_MAX (~(Size_t)0)
1689#define SSize_t_MAX (SSize_t)(~(Size_t)0 >> 1)
9a543cee 1690
cae7ae48 1691#define IV_DIG (BIT_DIGITS(IVSIZE * 8))
22ec83e3 1692#define UV_DIG (BIT_DIGITS(UVSIZE * 8))
56431972 1693
28e5dec8 1694#ifndef NO_PERL_PRESERVE_IVUV
f5c03d33 1695#define PERL_PRESERVE_IVUV /* We like our integers to stay integers. */
28e5dec8
JH
1696#endif
1697
d460ef45 1698/*
26bb67e2
JH
1699 * The macros INT2PTR and NUM2PTR are (despite their names)
1700 * bi-directional: they will convert int/float to or from pointers.
1701 * However the conversion to int/float are named explicitly:
1702 * PTR2IV, PTR2UV, PTR2NV.
1703 *
1704 * For int conversions we do not need two casts if pointers are
1705 * the same size as IV and UV. Otherwise we need an explicit
1706 * cast (PTRV) to avoid compiler warnings.
1707 */
56431972
RB
1708#if (IVSIZE == PTRSIZE) && (UVSIZE == PTRSIZE)
1709# define PTRV UV
1710# define INT2PTR(any,d) (any)(d)
1711#else
d460ef45 1712# if PTRSIZE == LONGSIZE
56431972 1713# define PTRV unsigned long
e91e3b10 1714# define PTR2ul(p) (unsigned long)(p)
42718184 1715# else
56431972 1716# define PTRV unsigned
42718184 1717# endif
e91e3b10
RB
1718#endif
1719
1720#ifndef INT2PTR
56431972 1721# define INT2PTR(any,d) (any)(PTRV)(d)
42718184 1722#endif
e91e3b10
RB
1723
1724#ifndef PTR2ul
1725# define PTR2ul(p) INT2PTR(unsigned long,p)
1726#endif
1727
56431972
RB
1728#define NUM2PTR(any,d) (any)(PTRV)(d)
1729#define PTR2IV(p) INT2PTR(IV,p)
1730#define PTR2UV(p) INT2PTR(UV,p)
1731#define PTR2NV(p) NUM2PTR(NV,p)
e91e3b10 1732#define PTR2nat(p) (PTRV)(p) /* pointer to integer of PTRSIZE */
d460ef45 1733
8141890a
JH
1734/* According to strict ANSI C89 one cannot freely cast between
1735 * data pointers and function (code) pointers. There are at least
1736 * two ways around this. One (used below) is to do two casts,
1737 * first the other pointer to an (unsigned) integer, and then
1738 * the integer to the other pointer. The other way would be
1739 * to use unions to "overlay" the pointers. For an example of
1740 * the latter technique, see union dirpu in struct xpvio in sv.h.
1741 * The only feasible use is probably temporarily storing
1742 * function pointers in a data pointer (such as a void pointer). */
1743
e91e3b10
RB
1744#define DPTR2FPTR(t,p) ((t)PTR2nat(p)) /* data pointer to function pointer */
1745#define FPTR2DPTR(t,p) ((t)PTR2nat(p)) /* function pointer to data pointer */
8141890a 1746
65202027 1747#ifdef USE_LONG_DOUBLE
1048ea30
JH
1748# if defined(HAS_LONG_DOUBLE) && LONG_DOUBLESIZE == DOUBLESIZE
1749# define LONG_DOUBLE_EQUALS_DOUBLE
1750# endif
68d4903c 1751# if !(defined(HAS_LONG_DOUBLE) && (LONG_DOUBLESIZE > DOUBLESIZE))
2d4389e4 1752# undef USE_LONG_DOUBLE /* Ouch! */
65202027
DS
1753# endif
1754#endif
1755
2d4389e4
JH
1756#ifdef OVR_DBL_DIG
1757/* Use an overridden DBL_DIG */
1758# ifdef DBL_DIG
1759# undef DBL_DIG
1760# endif
1761# define DBL_DIG OVR_DBL_DIG
1762#else
1763/* The following is all to get DBL_DIG, in order to pick a nice
205f51d8
AS
1764 default value for printing floating point numbers in Gconvert
1765 (see config.h). (It also has other uses, such as figuring out if
1766 a given precision of printing can be done with a double instead of
1767 a long double - Allen).
2d4389e4
JH
1768*/
1769#ifdef I_LIMITS
1770#include <limits.h>
1771#endif
1772#ifdef I_FLOAT
1773#include <float.h>
1774#endif
1775#ifndef HAS_DBL_DIG
1776#define DBL_DIG 15 /* A guess that works lots of places */
1777#endif
1778#endif
1779
1780#ifdef OVR_LDBL_DIG
1781/* Use an overridden LDBL_DIG */
1782# ifdef LDBL_DIG
1783# undef LDBL_DIG
1784# endif
1785# define LDBL_DIG OVR_LDBL_DIG
1786#else
1787/* The following is all to get LDBL_DIG, in order to pick a nice
1788 default value for printing floating point numbers in Gconvert.
1789 (see config.h)
1790*/
68d4903c
JH
1791# ifdef I_LIMITS
1792# include <limits.h>
1793# endif
1794# ifdef I_FLOAT
1795# include <float.h>
1796# endif
1797# ifndef HAS_LDBL_DIG
1798# if LONG_DOUBLESIZE == 10
1799# define LDBL_DIG 18 /* assume IEEE */
1800# else
1801# if LONG_DOUBLESIZE == 12
1802# define LDBL_DIG 18 /* gcc? */
1803# else
1804# if LONG_DOUBLESIZE == 16
1805# define LDBL_DIG 33 /* assume IEEE */
1806# else
1807# if LONG_DOUBLESIZE == DOUBLESIZE
1808# define LDBL_DIG DBL_DIG /* bummer */
1809# endif
1810# endif
1811# endif
1812# endif
1813# endif
2d4389e4
JH
1814#endif
1815
20f6aaab
AS
1816/*
1817 * This is for making sure we have a good DBL_MAX value, if possible,
1818 * either for usage as NV_MAX or for usage in figuring out if we can
1819 * fit a given long double into a double, if bug-fixing makes it
1820 * necessary to do so. - Allen <allens@cpan.org>
1821 */
1822
205f51d8
AS
1823#ifdef I_LIMITS
1824# include <limits.h>
20f6aaab
AS
1825#endif
1826
205f51d8
AS
1827#ifdef I_VALUES
1828# if !(defined(DBL_MIN) && defined(DBL_MAX) && defined(I_LIMITS))
1829# include <values.h>
1830# if defined(MAXDOUBLE) && !defined(DBL_MAX)
1831# define DBL_MAX MAXDOUBLE
1832# endif
1833# if defined(MINDOUBLE) && !defined(DBL_MIN)
1834# define DBL_MIN MINDOUBLE
1835# endif
1836# endif
1837#endif /* defined(I_VALUES) */
1838
a22e52b9 1839typedef NVTYPE NV;
8175356b 1840
792d8dab
JH
1841#ifdef I_IEEEFP
1842# include <ieeefp.h>
1843#endif
923fc586 1844
65202027 1845#ifdef USE_LONG_DOUBLE
923fc586
JH
1846# ifdef I_SUNMATH
1847# include <sunmath.h>
1848# endif
2d4389e4 1849# define NV_DIG LDBL_DIG
d6c14000
JH
1850# ifdef LDBL_MANT_DIG
1851# define NV_MANT_DIG LDBL_MANT_DIG
1852# endif
06fc1729
JH
1853# ifdef LDBL_MIN
1854# define NV_MIN LDBL_MIN
1855# endif
1856# ifdef LDBL_MAX
1857# define NV_MAX LDBL_MAX
1858# endif
40bca5ae
JH
1859# ifdef LDBL_MIN_EXP
1860# define NV_MIN_EXP LDBL_MIN_EXP
1861# endif
1862# ifdef LDBL_MAX_EXP
1863# define NV_MAX_EXP LDBL_MAX_EXP
1864# endif
06fc1729
JH
1865# ifdef LDBL_MIN_10_EXP
1866# define NV_MIN_10_EXP LDBL_MIN_10_EXP
1867# endif
1868# ifdef LDBL_MAX_10_EXP
1869# define NV_MAX_10_EXP LDBL_MAX_10_EXP
1870# endif
1871# ifdef LDBL_EPSILON
1872# define NV_EPSILON LDBL_EPSILON
1873# endif
f4a14a62
JH
1874# ifdef LDBL_MAX
1875# define NV_MAX LDBL_MAX
20f6aaab 1876/* Having LDBL_MAX doesn't necessarily mean that we have LDBL_MIN... -Allen */
f4a14a62
JH
1877# else
1878# ifdef HUGE_VALL
1879# define NV_MAX HUGE_VALL
1880# else
1881# ifdef HUGE_VAL
1882# define NV_MAX ((NV)HUGE_VAL)
1883# endif
1884# endif
1885# endif
68d4903c 1886# ifdef HAS_SQRTL
68d4903c
JH
1887# define Perl_cos cosl
1888# define Perl_sin sinl
1889# define Perl_sqrt sqrtl
1890# define Perl_exp expl
1891# define Perl_log logl
1892# define Perl_atan2 atan2l
1893# define Perl_pow powl
1894# define Perl_floor floorl
1bbae031 1895# define Perl_ceil ceill
68d4903c
JH
1896# define Perl_fmod fmodl
1897# endif
a3540c92
JH
1898/* e.g. libsunmath doesn't have modfl and frexpl as of mid-March 2000 */
1899# ifdef HAS_MODFL
1900# define Perl_modf(x,y) modfl(x,y)
51997bc3
NC
1901/* eg glibc 2.2 series seems to provide modfl on ppc and arm, but has no
1902 prototype in <math.h> */
1903# ifndef HAS_MODFL_PROTO
a221a8a5 1904EXTERN_C long double modfl(long double, long double *);
51997bc3 1905# endif
03476e8e
JH
1906# else
1907# if defined(HAS_AINTL) && defined(HAS_COPYSIGNL)
55954f19 1908 extern long double Perl_my_modfl(long double x, long double *ip);
03476e8e
JH
1909# define Perl_modf(x,y) Perl_my_modfl(x,y)
1910# endif
a3540c92
JH
1911# endif
1912# ifdef HAS_FREXPL
dff3e0b8 1913# define Perl_frexp(x,y) frexpl(x,y)
03476e8e
JH
1914# else
1915# if defined(HAS_ILOGBL) && defined(HAS_SCALBNL)
55954f19 1916 extern long double Perl_my_frexpl(long double x, int *e);
03476e8e
JH
1917# define Perl_frexp(x,y) Perl_my_frexpl(x,y)
1918# endif
a3540c92 1919# endif
98181445
JH
1920# ifdef HAS_LDEXPL
1921# define Perl_ldexp(x, y) ldexpl(x,y)
1922# else
1923# if defined(HAS_SCALBNL) && FLT_RADIX == 2
1924# define Perl_ldexp(x,y) scalbnl(x,y)
1925# endif
1926# endif
38dbb4c5 1927# ifndef Perl_isnan
86a3cabf 1928# if defined(HAS_ISNANL) && !(defined(isnan) && HAS_C99)
758a5d79
JH
1929# define Perl_isnan(x) isnanl(x)
1930# endif
1931# endif
1932# ifndef Perl_isinf
86a3cabf 1933# if defined(HAS_ISINFL) && !(defined(isinf) && HAS_C99)
87190886 1934# define Perl_isinf(x) isinfl(x)
a3540c92
JH
1935# endif
1936# endif
86a3cabf 1937# if !defined(Perl_isfinite) && !(defined(isfinite) && HAS_C99)
4efd38a4
JH
1938# ifdef HAS_ISFINITEL
1939# define Perl_isfinite(x) isfinitel(x)
1940# elif defined(HAS_FINITEL)
1941# define Perl_isfinite(x) finitel(x)
1942# endif
1943# endif
65202027 1944#else
2d4389e4 1945# define NV_DIG DBL_DIG
d6c14000
JH
1946# ifdef DBL_MANT_DIG
1947# define NV_MANT_DIG DBL_MANT_DIG
1948# endif
06fc1729
JH
1949# ifdef DBL_MIN
1950# define NV_MIN DBL_MIN
1951# endif
1952# ifdef DBL_MAX
1953# define NV_MAX DBL_MAX
1954# endif
40bca5ae
JH
1955# ifdef DBL_MIN_EXP
1956# define NV_MIN_EXP DBL_MIN_EXP
1957# endif
1958# ifdef DBL_MAX_EXP
1959# define NV_MAX_EXP DBL_MAX_EXP
1960# endif
06fc1729
JH
1961# ifdef DBL_MIN_10_EXP
1962# define NV_MIN_10_EXP DBL_MIN_10_EXP
1963# endif
1964# ifdef DBL_MAX_10_EXP
1965# define NV_MAX_10_EXP DBL_MAX_10_EXP
1966# endif
1967# ifdef DBL_EPSILON
1968# define NV_EPSILON DBL_EPSILON
1969# endif
205f51d8 1970# ifdef DBL_MAX /* XXX Does DBL_MAX imply having DBL_MIN? */
f4a14a62
JH
1971# define NV_MAX DBL_MAX
1972# define NV_MIN DBL_MIN
1973# else
1974# ifdef HUGE_VAL
1975# define NV_MAX HUGE_VAL
1976# endif
1977# endif
65202027
DS
1978# define Perl_cos cos
1979# define Perl_sin sin
1980# define Perl_sqrt sqrt
1981# define Perl_exp exp
1982# define Perl_log log
1983# define Perl_atan2 atan2
1984# define Perl_pow pow
1985# define Perl_floor floor
1bbae031 1986# define Perl_ceil ceil
65202027 1987# define Perl_fmod fmod
a3540c92 1988# define Perl_modf(x,y) modf(x,y)
dff3e0b8 1989# define Perl_frexp(x,y) frexp(x,y)
98181445 1990# define Perl_ldexp(x,y) ldexp(x,y)
1a322af2
JH
1991# ifndef Perl_isnan
1992# ifdef HAS_ISNAN
1993# define Perl_isnan(x) isnan(x)
1994# endif
1995# endif
1996# ifndef Perl_isinf
1997# if defined(HAS_ISINF)
1998# define Perl_isinf(x) isinf(x)
1999# endif
2000# endif
2001# ifndef Perl_isfinite
2002# ifdef HAS_ISFINITE
2003# define Perl_isfinite(x) isfinite(x)
2004# elif defined(HAS_FINITE)
2005# define Perl_isfinite(x) finite(x)
2006# endif
2007# endif
758a5d79
JH
2008#endif
2009
30404d48
JH
2010/* fpclassify(): C99. It is supposed to be a macro that switches on
2011* the sizeof() of its argument, so there's no need for e.g. fpclassifyl().*/
2012#if !defined(Perl_fp_class) && defined(HAS_FPCLASSIFY)
2013# include <math.h>
2014# define Perl_fp_class(x) fpclassify(x)
2015# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2016# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2017# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2018# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2019# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2020#endif
2021
f279e099
JH
2022/* Solaris and IRIX have fpclass/fpclassl, but they are using
2023 * an enum typedef, not cpp symbols, and Configure doesn't detect that.
2024 * Define one symbol also as a cpp symbol so we can detect it. */
2025#if defined(__sun) || defined(__irix__) /* XXX Configure test instead */
2026# define FP_SNAN FP_SNAN
2027#endif
205f51d8 2028
30404d48
JH
2029/* Feel free to check with me for the SGI manpages, SGI testing,
2030 * etcetera, if you want to try getting this to work with IRIX.
2031 *
2032 * - Allen <allens@cpan.org> */
2033
2034/* fpclass(): SysV, at least Solaris and some versions of IRIX. */
758a5d79 2035#if !defined(Perl_fp_class) && (defined(HAS_FPCLASS)||defined(HAS_FPCLASSL))
f279e099 2036# include <math.h>
758a5d79
JH
2037# ifdef I_IEEFP
2038# include <ieeefp.h>
2039# endif
2040# ifdef I_FP
2041# include <fp.h>
2042# endif
2043# if defined(USE_LONG_DOUBLE) && defined(HAS_FPCLASSL)
f279e099 2044# define Perl_fp_class(x) fpclassl(x)
758a5d79 2045# else
f279e099
JH
2046# define Perl_fp_class(x) fpclass(x)
2047# endif
2048# ifdef FP_CLASS_SNAN
2049# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_CLASS_SNAN)
2050# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_CLASS_QNAN)
2051# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_CLASS_NINF)
2052# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_CLASS_PINF)
2053# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_CLASS_NNORM)
2054# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_CLASS_PNORM)
2055# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_CLASS_NDENORM)
2056# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_CLASS_PDENORM)
2057# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_CLASS_NZERO)
2058# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_CLASS_PZERO)
2059# elif defined(FP_SNAN)
2060# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2061# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2062# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NINF)
2063# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PINF)
2064# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NNORM)
2065# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PNORM)
2066# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NDENORM)
2067# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PDENORM)
2068# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NZERO)
2069# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PZERO)
758a5d79 2070# endif
758a5d79
JH
2071#endif
2072
30404d48
JH
2073/* fp_class(): Legacy: at least Tru64, some versions of IRIX. */
2074#if !defined(Perl_fp_class) && (defined(HAS_FP_CLASS)||defined(HAS_FP_CLASSL))
758a5d79
JH
2075# include <math.h>
2076# if !defined(FP_SNAN) && defined(I_FP_CLASS)
2077# include <fp_class.h>
2078# endif
f279e099
JH
2079# ifdef __irix__ /* XXX Configure test instead */
2080# ifdef USE_LONG_DOUBLE
2081# define Perl_fp_class(x) fp_class_l(x)
2082# else
2083# define Perl_fp_class(x) fp_class_d(x)
2084# endif
2085# else
30404d48
JH
2086# if defined(USE_LONG_DOUBLE) && defined(HAS_FP_CLASSL)
2087# define Perl_fp_class(x) fp_classl(x)
2088# else
2089# define Perl_fp_class(x) fp_class(x)
2090# endif
f279e099 2091# endif
30404d48
JH
2092# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_SNAN)
2093# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_QNAN)
2094# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_NEG_INF)
2095# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_POS_INF)
2096# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_NEG_NORM)
2097# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_POS_NORM)
2098# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_NEG_DENORM)
2099# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_POS_DENORM)
2100# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_NEG_ZERO)
2101# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_POS_ZERO)
2102#endif
2103
052758ae 2104/* class(), _class(): Legacy: AIX. */
758a5d79
JH
2105#if !defined(Perl_fp_class) && defined(HAS_CLASS)
2106# include <math.h>
2107# ifndef _cplusplus
2108# define Perl_fp_class(x) class(x)
2109# else
2110# define Perl_fp_class(x) _class(x)
2111# endif
2112# define Perl_fp_class_snan(x) (Perl_fp_class(x)==FP_NANS)
2113# define Perl_fp_class_qnan(x) (Perl_fp_class(x)==FP_NANQ)
758a5d79
JH
2114# define Perl_fp_class_ninf(x) (Perl_fp_class(x)==FP_MINUS_INF)
2115# define Perl_fp_class_pinf(x) (Perl_fp_class(x)==FP_PLUS_INF)
758a5d79
JH
2116# define Perl_fp_class_nnorm(x) (Perl_fp_class(x)==FP_MINUS_NORM)
2117# define Perl_fp_class_pnorm(x) (Perl_fp_class(x)==FP_PLUS_NORM)
758a5d79
JH
2118# define Perl_fp_class_ndenorm(x) (Perl_fp_class(x)==FP_MINUS_DENORM)
2119# define Perl_fp_class_pdenorm(x) (Perl_fp_class(x)==FP_PLUS_DENORM)
758a5d79
JH
2120# define Perl_fp_class_nzero(x) (Perl_fp_class(x)==FP_MINUS_ZERO)
2121# define Perl_fp_class_pzero(x) (Perl_fp_class(x)==FP_PLUS_ZERO)
758a5d79
JH
2122#endif
2123
052758ae 2124/* fp_classify(): Legacy: VMS, maybe Unicos? */
30404d48
JH
2125#if !defined(Perl_fp_class) && defined(HAS_FP_CLASSIFY)
2126# include <math.h>
2127# define Perl_fp_class(x) fp_classify(x)
2128# define Perl_fp_class_inf(x) (Perl_fp_class(x)==FP_INFINITE)
2129# define Perl_fp_class_nan(x) (Perl_fp_class(x)==FP_NAN)
2130# define Perl_fp_class_norm(x) (Perl_fp_class(x)==FP_NORMAL)
2131# define Perl_fp_class_denorm(x) (Perl_fp_class(x)==FP_SUBNORMAL)
2132# define Perl_fp_class_zero(x) (Perl_fp_class(x)==FP_ZERO)
2133#endif
2134
2135/* Win32: _fpclass(), _isnan(), _finite(). */
796ea9ea
JH
2136#ifdef WIN32
2137# ifndef Perl_isnan
2138# define Perl_isnan(x) _isnan(x)
2139# endif
2140# ifndef Perl_isfinite
2141# define Perl_isfinite(x) _finite(x)
2142# endif
2143# ifndef Perl_fp_class_snan
2144# define Perl_fp_class_snan(x) (_fpclass(x) & _FPCLASS_SNAN)
2145# define Perl_fp_class_qnan(x) (_fpclass(x) & _FPCLASS_QNAN)
2146# define Perl_fp_class_nan(x) (_fpclass(x) & (_FPCLASS_QNAN|_FPCLASS_QNAN))
2147# define Perl_fp_class_ninf(x) (_fpclass(x) & _FPCLASS_NINF))
2148# define Perl_fp_class_pinf(x) (_fpclass(x) & _FPCLASS_PINF))
2149# define Perl_fp_class_inf(x) (_fpclass(x) & (_FPCLASS_NINF|_FPCLASS_PINF))
2150# define Perl_fp_class_nnorm(x) (_fpclass(x) & _FPCLASS_NN)
2151# define Perl_fp_class_pnorm(x) (_fpclass(x) & _FPCLASS_PN)
2152# define Perl_fp_class_norm(x) (_fpclass(x) & (_FPCLASS_NN|_FPCLASS_PN))
2153# define Perl_fp_class_ndenorm(x) (_fpclass(x) & _FPCLASS_ND)
2154# define Perl_fp_class_pdenorm(x) (_fpclass(x) & _FPCLASS_PD)
2155# define Perl_fp_class_denorm(x) (_fpclass(x) & (_FPCLASS_ND|_FPCLASS_PD))
2156# define Perl_fp_class_nzero(x) (_fpclass(x) & _FPCLASS_NZ)
2157# define Perl_fp_class_pzero(x) (_fpclass(x) & _FPCLASS_PZ)
2158# define Perl_fp_class_zero(x) (_fpclass(x) & (_FPCLASS_NZ|_FPCLASS_PZ))
2159# endif
f279e099
JH
2160#endif
2161
2162#if !defined(Perl_fp_class_inf) && \
2163 defined(Perl_fp_class_pinf) && defined(Perl_fp_class_ninf)
2164# define Perl_fp_class_inf(x) \
2165 (Perl_fp_class_pinf(x) || Perl_fp_class_ninf(x))
2166#endif
2167
2168#if !defined(Perl_fp_class_nan) && \
2169 defined(Perl_fp_class_snan) && defined(Perl_fp_class_qnan)
2170# define Perl_fp_class_nan(x) \
2171 (Perl_fp_class_snan(x) || Perl_fp_class_qnan(x))
2172#endif
2173
2174#if !defined(Perl_fp_class_zero) && \
2175 defined(Perl_fp_class_pzero) && defined(Perl_fp_class_nzero)
2176# define Perl_fp_class_zero(x) \
2177 (Perl_fp_class_pzero(x) || Perl_fp_class_nzero(x))
2178#endif
2179
2180#if !defined(Perl_fp_class_norm) && \
2181 defined(Perl_fp_class_pnorm) && defined(Perl_fp_class_nnorm)
2182# define Perl_fp_class_norm(x) \
2183 (Perl_fp_class_pnorm(x) || Perl_fp_class_nnorm(x))
2184#endif
2185
2186#if !defined(Perl_fp_class_denorm) && \
2187 defined(Perl_fp_class_pdenorm) && defined(Perl_fp_class_ndenorm)
2188# define Perl_fp_class_denorm(x) \
2189 (Perl_fp_class_pdenorm(x) || Perl_fp_class_ndenorm(x))
796ea9ea 2190#endif
758a5d79 2191
1a322af2
JH
2192#ifdef UNDER_CE
2193int isnan(double d);
2194#endif
2195
758a5d79 2196#ifndef Perl_isnan
1a322af2
JH
2197# ifdef Perl_fp_class_nan
2198# define Perl_isnan(x) Perl_fp_class_nan(x)
758a5d79 2199# else
1a322af2
JH
2200# ifdef HAS_UNORDERED
2201# define Perl_isnan(x) unordered((x), 0.0)
758a5d79 2202# else
1a322af2 2203# define Perl_isnan(x) ((x)!=(x))
758a5d79
JH
2204# endif
2205# endif
2206#endif
2207
1a322af2
JH
2208#ifndef Perl_isinf
2209# ifdef Perl_fp_class_inf
2210# define Perl_isinf(x) Perl_fp_class_inf(x)
30404d48
JH
2211# elif defined(Perl_isfinite) && defined(Perl_isnan)
2212# define Perl_isinf(x) !(Perl_isfinite(x)||Perl_isnan(x))
1a322af2 2213# endif
ca6c63e1
JH
2214#endif
2215
758a5d79 2216#ifndef Perl_isfinite
4efd38a4 2217# ifdef HAS_ISFINITE
87190886 2218# define Perl_isfinite(x) isfinite((double)x)
4efd38a4 2219# elif defined(HAS_FINITE)
87190886 2220# define Perl_isfinite(x) finite((double)x)
4efd38a4
JH
2221# elif defined(Perl_fp_class_finite)
2222# define Perl_isfinite(x) Perl_fp_class_finite(x)
2223# elif defined(Perl_is_inf) && defined(Perl_is_nan)
2224# define Perl_isfinite(x) !(Perl_is_inf(x)||Perl_is_nan(x))
758a5d79 2225# else
4efd38a4
JH
2226/* NaN*0 is NaN, [+-]Inf*0 is NaN, zero for anything else. */
2227# define Perl_isfinite(x) (((x) * 0) == 0)
a3540c92 2228# endif
65202027
DS
2229#endif
2230
a36244b7
JH
2231/* The default is to use Perl's own atof() implementation (in numeric.c).
2232 * Usually that is the one to use but for some platforms (e.g. UNICOS)
2233 * it is however best to use the native implementation of atof.
2234 * You can experiment with using your native one by -DUSE_PERL_ATOF=0.
2235 * Some good tests to try out with either setting are t/base/num.t,
205f51d8
AS
2236 * t/op/numconvert.t, and t/op/pack.t. Note that if using long doubles
2237 * you may need to be using a different function than atof! */
a36244b7
JH
2238
2239#ifndef USE_PERL_ATOF
2240# ifndef _UNICOS
2241# define USE_PERL_ATOF
2242# endif
2243#else
2244# if USE_PERL_ATOF == 0
2245# undef USE_PERL_ATOF
2246# endif
2247#endif
2248
2249#ifdef USE_PERL_ATOF
2250# define Perl_atof(s) Perl_my_atof(s)
2251# define Perl_atof2(s, n) Perl_my_atof2(aTHX_ (s), &(n))
2252#else
2253# define Perl_atof(s) (NV)atof(s)
2254# define Perl_atof2(s, n) ((n) = atof(s))
2255#endif
cf2093f6 2256
d460ef45 2257/* Previously these definitions used hardcoded figures.
760ac839
LW
2258 * It is hoped these formula are more portable, although
2259 * no data one way or another is presently known to me.
2260 * The "PERL_" names are used because these calculated constants
2261 * do not meet the ANSI requirements for LONG_MAX, etc., which
2262 * need to be constants acceptable to #if - kja
2263 * define PERL_LONG_MAX 2147483647L
2264 * define PERL_LONG_MIN (-LONG_MAX - 1)
2265 * define PERL ULONG_MAX 4294967295L
2266 */
2267
2268#ifdef I_LIMITS /* Needed for cast_xxx() functions below. */
2269# include <limits.h>
760ac839 2270#endif
205f51d8 2271/* Included values.h above if necessary; still including limits.h down here,
486ec47a 2272 * despite doing above, because math.h might have overridden... XXX - Allen */
760ac839 2273
99abf803
PP
2274/*
2275 * Try to figure out max and min values for the integral types. THE CORRECT
2276 * SOLUTION TO THIS MESS: ADAPT enquire.c FROM GCC INTO CONFIGURE. The
2277 * following hacks are used if neither limits.h or values.h provide them:
2278 * U<TYPE>_MAX: for types >= int: ~(unsigned TYPE)0
2279 * for types < int: (unsigned TYPE)~(unsigned)0
2280 * The argument to ~ must be unsigned so that later signed->unsigned
2281 * conversion can't modify the value's bit pattern (e.g. -0 -> +0),
2282 * and it must not be smaller than int because ~ does integral promotion.
2283 * <type>_MAX: (<type>) (U<type>_MAX >> 1)
2284 * <type>_MIN: -<type>_MAX - <is_twos_complement_architecture: (3 & -1) == 3>.
2285 * The latter is a hack which happens to work on some machines but
2286 * does *not* catch any random system, or things like integer types
2287 * with NaN if that is possible.
2288 *
2289 * All of the types are explicitly cast to prevent accidental loss of
2290 * numeric range, and in the hope that they will be less likely to confuse
2291 * over-eager optimizers.
2292 *
2293 */
27d4fb96 2294
99abf803
PP
2295#define PERL_UCHAR_MIN ((unsigned char)0)
2296
2297#ifdef UCHAR_MAX
2298# define PERL_UCHAR_MAX ((unsigned char)UCHAR_MAX)
27d4fb96 2299#else
99abf803
PP
2300# ifdef MAXUCHAR
2301# define PERL_UCHAR_MAX ((unsigned char)MAXUCHAR)
27d4fb96 2302# else
99abf803 2303# define PERL_UCHAR_MAX ((unsigned char)~(unsigned)0)
27d4fb96
PP
2304# endif
2305#endif
d460ef45 2306
99abf803
PP
2307/*
2308 * CHAR_MIN and CHAR_MAX are not included here, as the (char) type may be
2309 * ambiguous. It may be equivalent to (signed char) or (unsigned char)
2310 * depending on local options. Until Configure detects this (or at least
2311 * detects whether the "signed" keyword is available) the CHAR ranges
2312 * will not be included. UCHAR functions normally.
2313 * - kja
2314 */
27d4fb96 2315
99abf803
PP
2316#define PERL_USHORT_MIN ((unsigned short)0)
2317
2318#ifdef USHORT_MAX
2319# define PERL_USHORT_MAX ((unsigned short)USHORT_MAX)
27d4fb96 2320#else
99abf803
PP
2321# ifdef MAXUSHORT
2322# define PERL_USHORT_MAX ((unsigned short)MAXUSHORT)
27d4fb96 2323# else
ef2f54b0
CB
2324# ifdef USHRT_MAX
2325# define PERL_USHORT_MAX ((unsigned short)USHRT_MAX)
2326# else
2327# define PERL_USHORT_MAX ((unsigned short)~(unsigned)0)
2328# endif
27d4fb96
PP
2329# endif
2330#endif
2331
27d4fb96 2332#ifdef SHORT_MAX
99abf803 2333# define PERL_SHORT_MAX ((short)SHORT_MAX)
27d4fb96
PP
2334#else
2335# ifdef MAXSHORT /* Often used in <values.h> */
99abf803 2336# define PERL_SHORT_MAX ((short)MAXSHORT)
27d4fb96 2337# else
ef2f54b0
CB
2338# ifdef SHRT_MAX
2339# define PERL_SHORT_MAX ((short)SHRT_MAX)
2340# else
2341# define PERL_SHORT_MAX ((short) (PERL_USHORT_MAX >> 1))
2342# endif
27d4fb96
PP
2343# endif
2344#endif
2345
2346#ifdef SHORT_MIN
99abf803 2347# define PERL_SHORT_MIN ((short)SHORT_MIN)
27d4fb96
PP
2348#else
2349# ifdef MINSHORT
99abf803 2350# define PERL_SHORT_MIN ((short)MINSHORT)
27d4fb96 2351# else
ef2f54b0
CB
2352# ifdef SHRT_MIN
2353# define PERL_SHORT_MIN ((short)SHRT_MIN)
2354# else
2355# define PERL_SHORT_MIN (-PERL_SHORT_MAX - ((3 & -1) == 3))
2356# endif
27d4fb96
PP
2357# endif
2358#endif
2359
99abf803
PP
2360#ifdef UINT_MAX
2361# define PERL_UINT_MAX ((unsigned int)UINT_MAX)
27d4fb96 2362#else
99abf803
PP
2363# ifdef MAXUINT
2364# define PERL_UINT_MAX ((unsigned int)MAXUINT)
27d4fb96 2365# else
99abf803 2366# define PERL_UINT_MAX (~(unsigned int)0)
27d4fb96
PP
2367# endif
2368#endif
2369
99abf803 2370#define PERL_UINT_MIN ((unsigned int)0)
27d4fb96
PP
2371
2372#ifdef INT_MAX
99abf803 2373# define PERL_INT_MAX ((int)INT_MAX)
27d4fb96
PP
2374#else
2375# ifdef MAXINT /* Often used in <values.h> */
99abf803 2376# define PERL_INT_MAX ((int)MAXINT)
27d4fb96 2377# else
99abf803 2378# define PERL_INT_MAX ((int)(PERL_UINT_MAX >> 1))
27d4fb96
PP
2379# endif
2380#endif
2381
2382#ifdef INT_MIN
99abf803 2383# define PERL_INT_MIN ((int)INT_MIN)
27d4fb96
PP
2384#else
2385# ifdef MININT
99abf803 2386# define PERL_INT_MIN ((int)MININT)
27d4fb96
PP
2387# else
2388# define PERL_INT_MIN (-PERL_INT_MAX - ((3 & -1) == 3))
2389# endif
2390#endif
2391
99abf803
PP
2392#ifdef ULONG_MAX
2393# define PERL_ULONG_MAX ((unsigned long)ULONG_MAX)
27d4fb96 2394#else
99abf803
PP
2395# ifdef MAXULONG
2396# define PERL_ULONG_MAX ((unsigned long)MAXULONG)
27d4fb96 2397# else
99abf803 2398# define PERL_ULONG_MAX (~(unsigned long)0)
27d4fb96
PP
2399# endif
2400#endif
2401
99abf803 2402#define PERL_ULONG_MIN ((unsigned long)0L)
27d4fb96 2403
760ac839 2404#ifdef LONG_MAX
99abf803 2405# define PERL_LONG_MAX ((long)LONG_MAX)
760ac839
LW
2406#else
2407# ifdef MAXLONG /* Often used in <values.h> */
99abf803 2408# define PERL_LONG_MAX ((long)MAXLONG)
760ac839 2409# else
99abf803 2410# define PERL_LONG_MAX ((long) (PERL_ULONG_MAX >> 1))
760ac839
LW
2411# endif
2412#endif
2413
2414#ifdef LONG_MIN
99abf803 2415# define PERL_LONG_MIN ((long)LONG_MIN)
760ac839
LW
2416#else
2417# ifdef MINLONG
99abf803 2418# define PERL_LONG_MIN ((long)MINLONG)
760ac839 2419# else
27d4fb96 2420# define PERL_LONG_MIN (-PERL_LONG_MAX - ((3 & -1) == 3))
760ac839
LW
2421# endif
2422#endif
2423
d7d93a81 2424#ifdef UV_IS_QUAD
99abf803 2425
99abf803 2426# define PERL_UQUAD_MAX (~(UV)0)
f1c3b19a 2427# define PERL_UQUAD_MIN ((UV)0)
99abf803 2428# define PERL_QUAD_MAX ((IV) (PERL_UQUAD_MAX >> 1))
a6e633de 2429# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
27d4fb96 2430
79072805
LW
2431#endif
2432
ee0007ab 2433typedef MEM_SIZE STRLEN;
450a55e4 2434
79072805
LW
2435typedef struct op OP;
2436typedef struct cop COP;
2437typedef struct unop UNOP;
2438typedef struct binop BINOP;
2439typedef struct listop LISTOP;
2440typedef struct logop LOGOP;
79072805
LW
2441typedef struct pmop PMOP;
2442typedef struct svop SVOP;
7934575e 2443typedef struct padop PADOP;
79072805 2444typedef struct pvop PVOP;
79072805
LW
2445typedef struct loop LOOP;
2446
7aef8e5b 2447#ifdef PERL_CORE
8be227ab
FC
2448typedef struct opslab OPSLAB;
2449typedef struct opslot OPSLOT;
2450#endif
2451
52db365a 2452typedef struct block_hooks BHK;
1830b3d9 2453typedef struct custom_op XOP;
52db365a 2454
cd1541b2
NC
2455typedef struct interpreter PerlInterpreter;
2456
d2b3f365 2457/* SGI's <sys/sema.h> has struct sv */
cc3315ba 2458#if defined(__sgi)
d2b3f365 2459# define STRUCT_SV perl_sv
b8d3c5db
JH
2460#else
2461# define STRUCT_SV sv
2462#endif
2463typedef struct STRUCT_SV SV;
79072805
LW
2464typedef struct av AV;
2465typedef struct hv HV;
2466typedef struct cv CV;
d2f13c59 2467typedef struct p5rx REGEXP;
79072805 2468typedef struct gp GP;
0c30d9ec 2469typedef struct gv GV;
8990e307 2470typedef struct io IO;
c09156bb 2471typedef struct context PERL_CONTEXT;
79072805
LW
2472typedef struct block BLOCK;
2473
2474typedef struct magic MAGIC;
2475typedef struct xpv XPV;
2476typedef struct xpviv XPVIV;
ff68c719 2477typedef struct xpvuv XPVUV;
79072805
LW
2478typedef struct xpvnv XPVNV;
2479typedef struct xpvmg XPVMG;
2480typedef struct xpvlv XPVLV;
d361b004 2481typedef struct xpvinvlist XINVLIST;
79072805
LW
2482typedef struct xpvav XPVAV;
2483typedef struct xpvhv XPVHV;
2484typedef struct xpvgv XPVGV;
2485typedef struct xpvcv XPVCV;
2486typedef struct xpvbm XPVBM;
2487typedef struct xpvfm XPVFM;
8990e307 2488typedef struct xpvio XPVIO;
79072805
LW
2489typedef struct mgvtbl MGVTBL;
2490typedef union any ANY;
5f7fde29
GS
2491typedef struct ptr_tbl_ent PTR_TBL_ENT_t;
2492typedef struct ptr_tbl PTR_TBL_t;
8cf8f3d1
NIS
2493typedef struct clone_params CLONE_PARAMS;
2494
35e035cc 2495/* a pad or name pad is currently just an AV; but that might change,
7261499d
FC
2496 * so hide the type. */
2497typedef struct padlist PADLIST;
67634234 2498typedef AV PAD;
35e035cc
FC
2499typedef AV PADNAMELIST;
2500typedef SV PADNAME;
67634234 2501
13b0f67d
DM
2502/* enable PERL_NEW_COPY_ON_WRITE by default */
2503#if !defined(PERL_OLD_COPY_ON_WRITE) && !defined(PERL_NEW_COPY_ON_WRITE) && !defined(PERL_NO_COW)
2504# define PERL_NEW_COPY_ON_WRITE
2505#endif
07d01d6e 2506
db2c6cb3
FC
2507#if defined(PERL_OLD_COPY_ON_WRITE) || defined(PERL_NEW_COPY_ON_WRITE)
2508# if defined(PERL_OLD_COPY_ON_WRITE) && defined(PERL_NEW_COPY_ON_WRITE)
2509# error PERL_OLD_COPY_ON_WRITE and PERL_NEW_COPY_ON_WRITE are exclusive
2510# else
2511# define PERL_ANY_COW
2512# endif
9f351b45
DM
2513#else
2514# define PERL_SAWAMPERSAND
db2c6cb3
FC
2515#endif
2516
378cc40b 2517#include "handy.h"
a0d0e21e 2518
6b8eaf93 2519#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_RAWIO)
6b8eaf93
JH
2520# if LSEEKSIZE == 8 && !defined(USE_64_BIT_RAWIO)
2521# define USE_64_BIT_RAWIO /* implicit */
2522# endif
4564133c
JH
2523#endif
2524
6b8eaf93
JH
2525/* Notice the use of HAS_FSEEKO: now we are obligated to always use
2526 * fseeko/ftello if possible. Don't go #defining ftell to ftello yourself,
2527 * however, because operating systems like to do that themself. */
2528#ifndef FSEEKSIZE
2529# ifdef HAS_FSEEKO
2530# define FSEEKSIZE LSEEKSIZE
2531# else
2532# define FSEEKSIZE LONGSIZE
d460ef45 2533# endif
6b8eaf93
JH
2534#endif
2535
2536#if defined(USE_LARGE_FILES) && !defined(NO_64_BIT_STDIO)
6b8eaf93
JH
2537# if FSEEKSIZE == 8 && !defined(USE_64_BIT_STDIO)
2538# define USE_64_BIT_STDIO /* implicit */
2539# endif
2540#endif
4564133c 2541
09458382 2542#ifdef USE_64_BIT_RAWIO
d9b3e12d
JH
2543# ifdef HAS_OFF64_T
2544# undef Off_t
2545# define Off_t off64_t
2546# undef LSEEKSIZE
2547# define LSEEKSIZE 8
5ff3f7a4 2548# endif
d9b3e12d
JH
2549/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2550 * will trigger defines like the ones below. Some 64-bit environments,
09458382 2551 * however, do not. Therefore we have to explicitly mix and match. */
d9b3e12d
JH
2552# if defined(USE_OPEN64)
2553# define open open64
5ff3f7a4 2554# endif
d9b3e12d
JH
2555# if defined(USE_LSEEK64)
2556# define lseek lseek64
6b8eaf93
JH
2557# else
2558# if defined(USE_LLSEEK)
2559# define lseek llseek
2560# endif
d9b3e12d
JH
2561# endif
2562# if defined(USE_STAT64)
2563# define stat stat64
2564# endif
2565# if defined(USE_FSTAT64)
2566# define fstat fstat64
2567# endif
2568# if defined(USE_LSTAT64)
2569# define lstat lstat64
2570# endif
2571# if defined(USE_FLOCK64)
2572# define flock flock64
2573# endif
2574# if defined(USE_LOCKF64)
2575# define lockf lockf64
2576# endif
2577# if defined(USE_FCNTL64)
2578# define fcntl fcntl64
2579# endif
2580# if defined(USE_TRUNCATE64)
2581# define truncate truncate64
2582# endif
2583# if defined(USE_FTRUNCATE64)
2584# define ftruncate ftruncate64
2585# endif
2586#endif
2587
2588#ifdef USE_64_BIT_STDIO
2589# ifdef HAS_FPOS64_T
2590# undef Fpos_t
2591# define Fpos_t fpos64_t
2592# endif
2593/* Most 64-bit environments have defines like _LARGEFILE_SOURCE that
2594 * will trigger defines like the ones below. Some 64-bit environments,
2595 * however, do not. */
2596# if defined(USE_FOPEN64)
2597# define fopen fopen64
2598# endif
2599# if defined(USE_FSEEK64)
6b8eaf93 2600# define fseek fseek64 /* don't do fseeko here, see perlio.c */
d9b3e12d
JH
2601# endif
2602# if defined(USE_FTELL64)
6b8eaf93 2603# define ftell ftell64 /* don't do ftello here, see perlio.c */
d9b3e12d
JH
2604# endif
2605# if defined(USE_FSETPOS64)
2606# define fsetpos fsetpos64
2607# endif
2608# if defined(USE_FGETPOS64)
2609# define fgetpos fgetpos64
2610# endif
2611# if defined(USE_TMPFILE64)
2612# define tmpfile tmpfile64
2613# endif
2614# if defined(USE_FREOPEN64)
2615# define freopen freopen64
5ff3f7a4
GS
2616# endif
2617#endif
2618
e37778c2 2619#if defined(OS2)
2c2d71f5
JH
2620# include "iperlsys.h"
2621#endif
2622
748a9306 2623#ifdef DOSISH
19848b3f
JH
2624# if defined(OS2)
2625# include "os2ish.h"
2626# else
2627# include "dosish.h"
2628# endif
009819bb 2629#elif defined(VMS)
748a9306 2630# include "vmsish.h"
009819bb 2631#elif defined(PLAN9)
19848b3f 2632# include "./plan9/plan9ish.h"
009819bb 2633#elif defined(__VOS__)
196918b0
PG
2634# ifdef __GNUC__
2635# include "./vos/vosish.h"
2636# else
2637# include "vos/vosish.h"
2638# endif
009819bb 2639#elif defined(__SYMBIAN32__)
27da23d5 2640# include "symbian/symbianish.h"
009819bb 2641#elif defined(__HAIKU__)
df00ff3b 2642# include "haiku/haikuish.h"
009819bb 2643#else
19848b3f 2644# include "unixish.h"
13b6e58c
JH
2645#endif
2646
2946a158
JH
2647/* NSIG logic from Configure --> */
2648/* Strange style to avoid deeply-nested #if/#else/#endif */
2649#ifndef NSIG
2650# ifdef _NSIG
2651# define NSIG (_NSIG)
2652# endif
2653#endif
2654
2655#ifndef NSIG
2656# ifdef SIGMAX
2657# define NSIG (SIGMAX+1)
2658# endif
2659#endif
2660
2661#ifndef NSIG
2662# ifdef SIG_MAX
2663# define NSIG (SIG_MAX+1)
2664# endif
2665#endif
2666
2667#ifndef NSIG
2668# ifdef _SIG_MAX
2669# define NSIG (_SIG_MAX+1)
2670# endif
2671#endif
2672
2673#ifndef NSIG
2674# ifdef MAXSIG
2675# define NSIG (MAXSIG+1)
2676# endif
2677#endif
2678
2679#ifndef NSIG
2680# ifdef MAX_SIG
2681# define NSIG (MAX_SIG+1)
2682# endif
2683#endif
2684
2685#ifndef NSIG
2686# ifdef SIGARRAYSIZE
2687# define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
2688# endif
2689#endif
2690
2691#ifndef NSIG
2692# ifdef _sys_nsig
2693# define NSIG (_sys_nsig) /* Solaris 2.5 */
2694# endif
2695#endif
2696
2697/* Default to some arbitrary number that's big enough to get most
2698 of the common signals.
2699*/
2700#ifndef NSIG
2701# define NSIG 50
2702#endif
2703/* <-- NSIG logic from Configure */
2704
13b6e58c
JH
2705#ifndef NO_ENVIRON_ARRAY
2706# define USE_ENVIRON_ARRAY
2707#endif
32f822de 2708
c77b533b
JH
2709/*
2710 * initialise to avoid floating-point exceptions from overflow, etc
2711 */
2712#ifndef PERL_FPU_INIT
2713# ifdef HAS_FPSETMASK
2714# if HAS_FLOATINGPOINT_H
2715# include <floatingpoint.h>
2716# endif
ad3a8c67
NC
2717/* Some operating systems have this as a macro, which in turn expands to a comma
2718 expression, and the last sub-expression is something that gets calculated,
2719 and then they have the gall to warn that a value computed is not used. Hence
2720 cast to void. */
2721# define PERL_FPU_INIT (void)fpsetmask(0)
c77b533b 2722# else
2f42fcb0 2723# if defined(SIGFPE) && defined(SIG_IGN) && !defined(PERL_MICRO)
7f7c3354 2724# define PERL_FPU_INIT PL_sigfpe_saved = (Sighandler_t) signal(SIGFPE, SIG_IGN)
b35112e7
CS
2725# define PERL_FPU_PRE_EXEC { Sigsave_t xfpe; rsignal_save(SIGFPE, PL_sigfpe_saved, &xfpe);
2726# define PERL_FPU_POST_EXEC rsignal_restore(SIGFPE, &xfpe); }
7014c407
JH
2727# else
2728# define PERL_FPU_INIT
2f42fcb0 2729
7014c407 2730# endif
c77b533b
JH
2731# endif
2732#endif
b35112e7
CS
2733#ifndef PERL_FPU_PRE_EXEC
2734# define PERL_FPU_PRE_EXEC {
2735# define PERL_FPU_POST_EXEC }
2736#endif
c77b533b 2737
cbec8ebe
DM
2738#ifndef PERL_SYS_INIT3_BODY
2739# define PERL_SYS_INIT3_BODY(argvp,argcp,envp) PERL_SYS_INIT_BODY(argvp,argcp)
ed344e4f
IZ
2740#endif
2741
eb533572 2742/*
dcccc8ff
KW
2743=head1 Miscellaneous Functions
2744
4ad9e498 2745=for apidoc Am|void|PERL_SYS_INIT|int *argc|char*** argv
eb533572 2746Provides system-specific tune up of the C runtime environment necessary to
72d33970 2747run Perl interpreters. This should be called only once, before creating
eb533572
DM
2748any Perl interpreters.
2749
4ad9e498 2750=for apidoc Am|void|PERL_SYS_INIT3|int *argc|char*** argv|char*** env
eb533572 2751Provides system-specific tune up of the C runtime environment necessary to
72d33970 2752run Perl interpreters. This should be called only once, before creating
eb533572
DM
2753any Perl interpreters.
2754
2755=for apidoc Am|void|PERL_SYS_TERM|
2756Provides system-specific clean up of the C runtime environment after
72d33970 2757running Perl interpreters. This should be called only once, after
eb533572
DM
2758freeing any remaining Perl interpreters.
2759
2760=cut
2761 */
2762
cbec8ebe
DM
2763#define PERL_SYS_INIT(argc, argv) Perl_sys_init(argc, argv)
2764#define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, env)
d0820ef1 2765#define PERL_SYS_TERM() Perl_sys_term()
cbec8ebe 2766
be708cc0
JH
2767#ifndef PERL_WRITE_MSG_TO_CONSOLE
2768# define PERL_WRITE_MSG_TO_CONSOLE(io, msg, len) PerlIO_write(io, msg, len)
2769#endif
2770
0f31cffe
GS
2771#ifndef MAXPATHLEN
2772# ifdef PATH_MAX
b990c8b2
JH
2773# ifdef _POSIX_PATH_MAX
2774# if PATH_MAX > _POSIX_PATH_MAX
09448d78
JH
2775/* POSIX 1990 (and pre) was ambiguous about whether PATH_MAX
2776 * included the null byte or not. Later amendments of POSIX,
2777 * XPG4, the Austin Group, and the Single UNIX Specification
2778 * all explicitly include the null byte in the PATH_MAX.
2779 * Ditto for _POSIX_PATH_MAX. */
2780# define MAXPATHLEN PATH_MAX
b990c8b2 2781# else
09448d78 2782# define MAXPATHLEN _POSIX_PATH_MAX
b990c8b2
JH
2783# endif
2784# else
2785# define MAXPATHLEN (PATH_MAX+1)
2786# endif
0f31cffe 2787# else
d552bce8 2788# define MAXPATHLEN 1024 /* Err on the large side. */
0f31cffe
GS
2789# endif
2790#endif
2791
c80263a8
SH
2792/* In case Configure was not used (we are using a "canned config"
2793 * such as Win32, or a cross-compilation setup, for example) try going
2794 * by the gcc major and minor versions. One useful URL is
2795 * http://www.ohse.de/uwe/articles/gcc-attributes.html,
2796 * but contrary to this information warn_unused_result seems
2797 * not to be in gcc 3.3.5, at least. --jhi
42bf5550
AD
2798 * Also, when building extensions with an installed perl, this allows
2799 * the user to upgrade gcc and get the right attributes, rather than
2800 * relying on the list generated at Configure time. --AD
c80263a8
SH
2801 * Set these up now otherwise we get confused when some of the <*thread.h>
2802 * includes below indirectly pull in <perlio.h> (which needs to know if we
2803 * have HASATTRIBUTE_FORMAT).
2804 */
2805
4d7c7898 2806#ifndef PERL_MICRO
fc2007d4 2807#if defined __GNUC__ && !defined(__INTEL_COMPILER)
6a387721
RGS
2808# if __GNUC__ == 3 && __GNUC_MINOR__ >= 1 || __GNUC__ > 3 /* 3.1 -> */
2809# define HASATTRIBUTE_DEPRECATED
2810# endif
c80263a8
SH
2811# if __GNUC__ >= 3 /* 3.0 -> */ /* XXX Verify this version */
2812# define HASATTRIBUTE_FORMAT
63cdf24b
SH
2813# if defined __MINGW32__
2814# define PRINTF_FORMAT_NULL_OK
2815# endif
c80263a8
SH
2816# endif
2817# if __GNUC__ >= 3 /* 3.0 -> */
2818# define HASATTRIBUTE_MALLOC
2819# endif
2820# if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || __GNUC__ > 3 /* 3.3 -> */
2821# define HASATTRIBUTE_NONNULL
2822# endif
2823# if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 || __GNUC__ > 2 /* 2.5 -> */
2824# define HASATTRIBUTE_NORETURN
2825# endif
2826# if __GNUC__ >= 3 /* gcc 3.0 -> */
2827# define HASATTRIBUTE_PURE
2828# endif
42bf5550 2829# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
c80263a8
SH
2830# define HASATTRIBUTE_UNUSED
2831# endif
d324fe49
AD
2832# if __GNUC__ == 3 && __GNUC_MINOR__ == 3 && !defined(__cplusplus)
2833# define HASATTRIBUTE_UNUSED /* gcc-3.3, but not g++-3.3. */
2834# endif
c80263a8
SH
2835# if __GNUC__ == 3 && __GNUC_MINOR__ >= 4 || __GNUC__ > 3 /* 3.4 -> */
2836# define HASATTRIBUTE_WARN_UNUSED_RESULT
2837# endif
2838#endif
00f254e2 2839#endif /* #ifndef PERL_MICRO */
c80263a8 2840
3db8f154 2841/* USE_5005THREADS needs to be after unixish.h as <pthread.h> includes
dd96f567 2842 * <sys/signal.h> which defines NSIG - which will stop inclusion of <signal.h>
32f822de
GS
2843 * this results in many functions being undeclared which bothers C++
2844 * May make sense to have threads after "*ish.h" anyway
2845 */
2846
3db8f154 2847#if defined(USE_ITHREADS)
2986a63f
JH
2848# ifdef NETWARE
2849# include <nw5thread.h>
2850# else
32f822de
GS
2851# ifdef WIN32
2852# include <win32thread.h>
2853# else
dd96f567
IZ
2854# ifdef OS2
2855# include "os2thread.h"
2856# else
7f3d1cf1 2857# ifdef I_MACH_CTHREADS
bdd66968 2858# include <mach/cthreads.h>
7f3d1cf1
BH
2859typedef cthread_t perl_os_thread;
2860typedef mutex_t perl_mutex;
2861typedef condition_t perl_cond;
2862typedef void * perl_key;
2863# else /* Posix threads */
1f5ae88c
JH
2864# ifdef I_PTHREAD
2865# include <pthread.h>
2866# endif
7f3d1cf1
BH
2867typedef pthread_t perl_os_thread;
2868typedef pthread_mutex_t perl_mutex;
2869typedef pthread_cond_t perl_cond;
2870typedef pthread_key_t perl_key;
2871# endif /* I_MACH_CTHREADS */
dd96f567 2872# endif /* OS2 */
32f822de 2873# endif /* WIN32 */
ef4abe76 2874# endif /* NETWARE */
3db8f154 2875#endif /* USE_ITHREADS */
c5be433b 2876
66a93824 2877#if defined(WIN32)
1feb2720 2878# include "win32.h"
c5be433b
GS
2879#endif
2880
2986a63f
JH
2881#ifdef NETWARE
2882# include "netware.h"
2883#endif
2884
e5218da5 2885#define STATUS_UNIX PL_statusvalue
68dc0745 2886#ifdef VMS
6b88bc9c 2887# define STATUS_NATIVE PL_statusvalue_vms
7a7fd8e0
JM
2888/*
2889 * vaxc$errno is only guaranteed to be valid if errno == EVMSERR, otherwise
ff7298cb 2890 * its contents can not be trusted. Unfortunately, Perl seems to check
7a7fd8e0
JM
2891 * it on exit, so it when PL_statusvalue_vms is updated, vaxc$errno should
2892 * be updated also.
2893 */
2894# include <stsdef.h>
2895# include <ssdef.h>
2896/* Presume this because if VMS changes it, it will require a new
2897 * set of APIs for waiting on children for binary compatibility.
2898 */
2899# define child_offset_bits (8)
2900# ifndef C_FAC_POSIX
2901# define C_FAC_POSIX 0x35A000
2902# endif
2903
2904/* STATUS_EXIT - validates and returns a NATIVE exit status code for the
2905 * platform from the existing UNIX or Native status values.
2906 */
2907
37038d91 2908# define STATUS_EXIT \
7a7fd8e0
JM
2909 (((I32)PL_statusvalue_vms == -1 ? SS$_ABORT : PL_statusvalue_vms) | \
2910 (VMSISH_HUSHED ? STS$M_INHIB_MSG : 0))
2911
7a7fd8e0 2912
fb38d079
JM
2913/* STATUS_NATIVE_CHILD_SET - Calculate UNIX status that matches the child
2914 * exit code and shifts the UNIX value over the correct number of bits to
2915 * be a child status. Usually the number of bits is 8, but that could be
2916 * platform dependent. The NATIVE status code is presumed to have either
2917 * from a child process.
7a7fd8e0
JM
2918 */
2919
fb38d079
JM
2920/* This is complicated. The child processes return a true native VMS
2921 status which must be saved. But there is an assumption in Perl that
2922 the UNIX child status has some relationship to errno values, so
00f254e2 2923 Perl tries to translate it to text in some of the tests.
fb38d079
JM
2924 In order to get the string translation correct, for the error, errno
2925 must be EVMSERR, but that generates a different text message
2926 than what the test programs are expecting. So an errno value must
2927 be derived from the native status value when an error occurs.
2928 That will hide the true native status message. With this version of
2929 perl, the true native child status can always be retrieved so that
2930 is not a problem. But in this case, Pl_statusvalue and errno may
2931 have different values in them.
2932 */
7a7fd8e0 2933
fb38d079 2934# define STATUS_NATIVE_CHILD_SET(n) \
68dc0745 2935 STMT_START { \
2fbb330f
JM
2936 I32 evalue = (I32)n; \
2937 if (evalue == EVMSERR) { \
2938 PL_statusvalue_vms = vaxc$errno; \
2939 PL_statusvalue = evalue; \
7a7fd8e0 2940 } else { \
2fbb330f 2941 PL_statusvalue_vms = evalue; \
fb38d079 2942 if (evalue == -1) { \
3280af22 2943 PL_statusvalue = -1; \
7a7fd8e0
JM
2944 PL_statusvalue_vms = SS$_ABORT; /* Should not happen */ \
2945 } else \
fb38d079 2946 PL_statusvalue = Perl_vms_status_to_unix(evalue, 1); \
2fbb330f 2947 set_vaxc_errno(evalue); \
fb38d079
JM
2948 if ((PL_statusvalue_vms & C_FAC_POSIX) == C_FAC_POSIX) \
2949 set_errno(EVMSERR); \
2950 else set_errno(Perl_vms_status_to_unix(evalue, 0)); \
2951 PL_statusvalue = PL_statusvalue << child_offset_bits; \
2fbb330f 2952 } \
68dc0745 2953 } STMT_END
7a7fd8e0 2954
68dc0745 2955# ifdef VMSISH_STATUS
e5218da5 2956# define STATUS_CURRENT (VMSISH_STATUS ? STATUS_NATIVE : STATUS_UNIX)
68dc0745 2957# else
e5218da5 2958# define STATUS_CURRENT STATUS_UNIX
68dc0745 2959# endif
7a7fd8e0
JM
2960
2961 /* STATUS_UNIX_SET - takes a UNIX/POSIX errno value and attempts to update
2962 * the NATIVE status to an equivalent value. Can not be used to translate
2963 * exit code values as exit code values are not guaranteed to have any
2964 * relationship at all to errno values.
2965 * This is used when Perl is forcing errno to have a specific value.
2966 */
e5218da5 2967# define STATUS_UNIX_SET(n) \
68dc0745 2968 STMT_START { \
7a7fd8e0 2969 I32 evalue = (I32)n; \
0968cdad 2970 PL_statusvalue = evalue; \
3280af22 2971 if (PL_statusvalue != -1) { \
0968cdad
JM
2972 if (PL_statusvalue != EVMSERR) { \
2973 PL_statusvalue &= 0xFFFF; \
2974 if (MY_POSIX_EXIT) \
2975 PL_statusvalue_vms=PL_statusvalue ? SS$_ABORT : SS$_NORMAL;\
2976 else PL_statusvalue_vms = Perl_unix_status_to_vms(evalue); \
2977 } \
2978 else { \
2979 PL_statusvalue_vms = vaxc$errno; \
2980 } \
68dc0745 2981 } \
0968cdad
JM
2982 else PL_statusvalue_vms = SS$_ABORT; \
2983 set_vaxc_errno(PL_statusvalue_vms); \
7a7fd8e0
JM
2984 } STMT_END
2985
2986 /* STATUS_UNIX_EXIT_SET - Takes a UNIX/POSIX exit code and sets
e08e1e1d
JM
2987 * the NATIVE error status based on it.
2988 *
2989 * When in the default mode to comply with the Perl VMS documentation,
2990 * 0 is a success and any other code sets the NATIVE status to a failure
2991 * code of SS$_ABORT.
fb38d079
JM
2992 *
2993 * In the new POSIX EXIT mode, native status will be set so that the
2994 * actual exit code will can be retrieved by the calling program or
2995 * shell.
2996 *
2997 * If the exit code is not clearly a UNIX parent or child exit status,
2998 * it will be passed through as a VMS status.
7a7fd8e0
JM
2999 */
3000
fb38d079 3001# define STATUS_UNIX_EXIT_SET(n) \
7a7fd8e0
JM
3002 STMT_START { \
3003 I32 evalue = (I32)n; \
3004 PL_statusvalue = evalue; \
e08e1e1d
JM
3005 if (MY_POSIX_EXIT) { \
3006 if (evalue <= 0xFF00) { \
3007 if (evalue > 0xFF) \
3008 evalue = (evalue >> child_offset_bits) & 0xFF; \
3009 PL_statusvalue_vms = \
3010 (C_FAC_POSIX | (evalue << 3 ) | \
3011 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1)); \
3012 } else /* forgive them Perl, for they have sinned */ \
3013 PL_statusvalue_vms = evalue; \
3014 } else { \
3015 if (evalue == 0) \
3016 PL_statusvalue_vms = SS$_NORMAL; \
3017 else if (evalue <= 0xFF00) \
3018 PL_statusvalue_vms = SS$_ABORT; \
3019 else { /* forgive them Perl, for they have sinned */ \
3020 if (evalue != EVMSERR) PL_statusvalue_vms = evalue; \
3021 else PL_statusvalue_vms = vaxc$errno; \
3022 /* And obviously used a VMS status value instead of UNIX */ \
3023 PL_statusvalue = EVMSERR; \
3024 } \
3025 set_vaxc_errno(PL_statusvalue_vms); \
3026 } \
68dc0745 3027 } STMT_END
fb38d079 3028
e08e1e1d 3029
6ac6a52b
JM
3030 /* STATUS_EXIT_SET - Takes a NATIVE/UNIX/POSIX exit code
3031 * and sets the NATIVE error status based on it. This special case
3032 * is needed to maintain compatibility with past VMS behavior.
3033 *
3034 * In the default mode on VMS, this number is passed through as
3035 * both the NATIVE and UNIX status. Which makes it different
3036 * that the STATUS_UNIX_EXIT_SET.
3037 *
3038 * In the new POSIX EXIT mode, native status will be set so that the
3039 * actual exit code will can be retrieved by the calling program or
3040 * shell.
3041 *
1a3aec58
JM
3042 * A POSIX exit code is from 0 to 255. If the exit code is higher
3043 * than this, it needs to be assumed that it is a VMS exit code and
3044 * passed through.
6ac6a52b
JM
3045 */
3046
3047# define STATUS_EXIT_SET(n) \
3048 STMT_START { \
3049 I32 evalue = (I32)n; \
3050 PL_statusvalue = evalue; \
3051 if (MY_POSIX_EXIT) \
1a3aec58
JM
3052 if (evalue > 255) PL_statusvalue_vms = evalue; else { \
3053 PL_statusvalue_vms = \
3054 (C_FAC_POSIX | (evalue << 3 ) | \
3055 ((evalue == 1) ? (STS$K_ERROR | STS$M_INHIB_MSG) : 1));} \
6ac6a52b
JM
3056 else \
3057 PL_statusvalue_vms = evalue ? evalue : SS$_NORMAL; \
3058 set_vaxc_errno(PL_statusvalue_vms); \
3059 } STMT_END
3060
fb38d079
JM
3061
3062 /* This macro forces a success status */
7a7fd8e0
JM
3063# define STATUS_ALL_SUCCESS \
3064 (PL_statusvalue = 0, PL_statusvalue_vms = SS$_NORMAL)
fb38d079
JM
3065
3066 /* This macro forces a failure status */
7a7fd8e0
JM
3067# define STATUS_ALL_FAILURE (PL_statusvalue = 1, \
3068 vaxc$errno = PL_statusvalue_vms = MY_POSIX_EXIT ? \
3069 (C_FAC_POSIX | (1 << 3) | STS$K_ERROR | STS$M_INHIB_MSG) : SS$_ABORT)
fb38d079 3070
68dc0745 3071#else
e5218da5 3072# define STATUS_NATIVE PL_statusvalue_posix
e5218da5 3073# if defined(WCOREDUMP)
37038d91 3074# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3075 STMT_START { \
3076 PL_statusvalue_posix = (n); \
3077 if (PL_statusvalue_posix == -1) \
3078 PL_statusvalue = -1; \
3079 else { \
3080 PL_statusvalue = \
3081 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3082 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0) | \
3083 (WIFSIGNALED(PL_statusvalue_posix) && WCOREDUMP(PL_statusvalue_posix) ? 0x80 : 0); \
3084 } \
3085 } STMT_END
3086# elif defined(WIFEXITED)
37038d91 3087# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3088 STMT_START { \
3089 PL_statusvalue_posix = (n); \
3090 if (PL_statusvalue_posix == -1) \
3091 PL_statusvalue = -1; \
3092 else { \
3093 PL_statusvalue = \
3094 (WIFEXITED(PL_statusvalue_posix) ? (WEXITSTATUS(PL_statusvalue_posix) << 8) : 0) | \
3095 (WIFSIGNALED(PL_statusvalue_posix) ? (WTERMSIG(PL_statusvalue_posix) & 0x7F) : 0); \
3096 } \
3097 } STMT_END
3098# else
37038d91 3099# define STATUS_NATIVE_CHILD_SET(n) \
e5218da5
GA
3100 STMT_START { \
3101 PL_statusvalue_posix = (n); \
3102 if (PL_statusvalue_posix == -1) \
3103 PL_statusvalue = -1; \
3104 else { \
3105 PL_statusvalue = \
3106 PL_statusvalue_posix & 0xFFFF; \
3107 } \
3108 } STMT_END
3109# endif
3110# define STATUS_UNIX_SET(n) \
68dc0745 3111 STMT_START { \
3280af22
NIS
3112 PL_statusvalue = (n); \
3113 if (PL_statusvalue != -1) \
3114 PL_statusvalue &= 0xFFFF; \
68dc0745 3115 } STMT_END
7a7fd8e0 3116# define STATUS_UNIX_EXIT_SET(n) STATUS_UNIX_SET(n)
6ac6a52b 3117# define STATUS_EXIT_SET(n) STATUS_UNIX_SET(n)
e5218da5 3118# define STATUS_CURRENT STATUS_UNIX
37038d91 3119# define STATUS_EXIT STATUS_UNIX
e5218da5
GA
3120# define STATUS_ALL_SUCCESS (PL_statusvalue = 0, PL_statusvalue_posix = 0)
3121# define STATUS_ALL_FAILURE (PL_statusvalue = 1, PL_statusvalue_posix = 1)
68dc0745
PP
3122#endif
3123
cc3604b1
GS
3124/* flags in PL_exit_flags for nature of exit() */
3125#define PERL_EXIT_EXPECTED 0x01
31d77e54 3126#define PERL_EXIT_DESTRUCT_END 0x02 /* Run END in perl_destruct */
6136213b
JGM
3127#define PERL_EXIT_WARN 0x04 /* Warn if Perl_my_exit() or Perl_my_failure_exit() called */
3128#define PERL_EXIT_ABORT 0x08 /* Call abort() if Perl_my_exit() or Perl_my_failure_exit() called */
cc3604b1 3129
b79b76e0 3130#ifndef PERL_CORE
a7cb1f99 3131/* format to use for version numbers in file/directory names */
273cf8d1 3132/* XXX move to Configure? */
b79b76e0
NC
3133/* This was only ever used for the current version, and that can be done at
3134 compile time, as PERL_FS_VERSION, so should we just delete it? */
3135# ifndef PERL_FS_VER_FMT
3136# define PERL_FS_VER_FMT "%d.%d.%d"
3137# endif
3138#endif
3139
3140#ifndef PERL_FS_VERSION
3141# define PERL_FS_VERSION PERL_VERSION_STRING
0b94c7bb
GS
3142#endif
3143
45bc9206 3144/* This defines a way to flush all output buffers. This may be a
76549fef
JH
3145 * performance issue, so we allow people to disable it. Also, if
3146 * we are using stdio, there are broken implementations of fflush(NULL)
3147 * out there, Solaris being the most prominent.
45bc9206
GS
3148 */
3149#ifndef PERL_FLUSHALL_FOR_CHILD
97cb92d6 3150# if defined(USE_PERLIO) || defined(FFLUSH_NULL)
66fe083f 3151# define PERL_FLUSHALL_FOR_CHILD PerlIO_flush((PerlIO*)NULL)
767df6a1
JH
3152# else
3153# ifdef FFLUSH_ALL
3154# define PERL_FLUSHALL_FOR_CHILD my_fflush_all()
e2dbf222 3155# else
c5be433b 3156# define PERL_FLUSHALL_FOR_CHILD NOOP
767df6a1 3157# endif
66fe083f 3158# endif
45bc9206
GS
3159#endif
3160
7766f137
GS
3161#ifndef PERL_WAIT_FOR_CHILDREN
3162# define PERL_WAIT_FOR_CHILDREN NOOP
3163#endif
3164
ba869deb 3165/* the traditional thread-unsafe notion of "current interpreter". */
c5be433b
GS
3166#ifndef PERL_SET_INTERP
3167# define PERL_SET_INTERP(i) (PL_curinterp = (PerlInterpreter*)(i))
3168#endif
3169
3170#ifndef PERL_GET_INTERP
3171# define PERL_GET_INTERP (PL_curinterp)
3172#endif
3173
54aff467 3174#if defined(PERL_IMPLICIT_CONTEXT) && !defined(PERL_GET_THX)
54aff467 3175# ifdef MULTIPLICITY
ba869deb 3176# define PERL_GET_THX ((PerlInterpreter *)PERL_GET_CONTEXT)
54aff467 3177# endif
ba869deb
GS
3178# define PERL_SET_THX(t) PERL_SET_CONTEXT(t)
3179#endif
3180
00f254e2 3181/*
8896765a 3182 This replaces the previous %_ "hack" by the "%p" hacks.
0dbb1585 3183 All that is required is that the perl source does not
00f254e2
KW
3184 use "%-p" or "%-<number>p" or "%<number>p" formats.
3185 These formats will still work in perl code.
486ec47a 3186 See comments in sv.c for further details.
8896765a 3187
8896765a 3188 Robin Barker 2005-07-14
f46d31f2 3189
00f254e2 3190 No longer use %1p for VDf = %vd. RMB 2007-10-19
0dbb1585 3191*/
8896765a
RB
3192
3193#ifndef SVf_
63ce7bf0 3194# define SVf_(n) "-" STRINGIFY(n) "p"
894356b3
GS
3195#endif
3196
8896765a 3197#ifndef SVf
104abab4 3198# define SVf "-p"
d2560b70
RB
3199#endif
3200
014ead4b 3201#ifndef SVf32
8896765a 3202# define SVf32 SVf_(32)
014ead4b
RB
3203#endif
3204
3205#ifndef SVf256
8896765a
RB
3206# define SVf256 SVf_(256)
3207#endif
3208
be2597df
MHM
3209#define SVfARG(p) ((void*)(p))
3210
20023040
FC
3211#ifndef HEKf
3212# define HEKf "2p"
3213#endif
3214
b8fa5213
FC
3215/* Not ideal, but we cannot easily include a number in an already-numeric
3216 * format sequence. */
3217#ifndef HEKf256
3218# define HEKf256 "3p"
3219#endif
3220
20023040
FC
3221#define HEKfARG(p) ((void*)(p))
3222
b17a0679
FC
3223/* Takes three arguments: is_utf8, length, str */
3224#ifndef UTF8f
61608bb7 3225# define UTF8f "d%" UVuf "%4p"
b17a0679
FC
3226#endif
3227#define UTF8fARG(u,l,p) (int)cBOOL(u), (UV)(l), (void*)(p)
3228
f46d31f2 3229#ifdef PERL_CORE
486ec47a 3230/* not used; but needed for backward compatibility with XS code? - RMB */
7776bb98
RB
3231# undef UVf
3232#else
170cd9e9
NC
3233# ifndef UVf
3234# define UVf UVuf
3235# endif
d2560b70
RB
3236#endif
3237
fcdf39cf
RGS
3238#ifdef HASATTRIBUTE_DEPRECATED
3239# define __attribute__deprecated__ __attribute__((deprecated))
3240#endif
0dbb1585
AL
3241#ifdef HASATTRIBUTE_FORMAT
3242# define __attribute__format__(x,y,z) __attribute__((format(x,y,z)))
3243#endif
3244#ifdef HASATTRIBUTE_MALLOC
77785eea 3245# define __attribute__malloc__ __attribute__((__malloc__))
f22be1b8 3246#endif
0dbb1585 3247#ifdef HASATTRIBUTE_NONNULL
abb2c242 3248# define __attribute__nonnull__(a) __attribute__((nonnull(a)))
f22be1b8 3249#endif
0dbb1585 3250#ifdef HASATTRIBUTE_NORETURN
abb2c242 3251# define __attribute__noreturn__ __attribute__((noreturn))
f22be1b8 3252#endif
0dbb1585 3253#ifdef HASATTRIBUTE_PURE
abb2c242 3254# define __attribute__pure__ __attribute__((pure))
f22be1b8 3255#endif
0dbb1585
AL
3256#ifdef HASATTRIBUTE_UNUSED
3257# define __attribute__unused__ __attribute__((unused))
3258#endif
3259#ifdef HASATTRIBUTE_WARN_UNUSED_RESULT
abb2c242 3260# define __attribute__warn_unused_result__ __attribute__((warn_unused_result))
f22be1b8
JH
3261#endif
3262
0dbb1585 3263/* If we haven't defined the attributes yet, define them to blank. */
fcdf39cf
RGS
3264#ifndef __attribute__deprecated__
3265# define __attribute__deprecated__
3266#endif
0dbb1585
AL
3267#ifndef __attribute__format__
3268# define __attribute__format__(x,y,z)
3269#endif
f22be1b8 3270#ifndef __attribute__malloc__
abb2c242 3271# define __attribute__malloc__
f22be1b8
JH
3272#endif
3273#ifndef __attribute__nonnull__
abb2c242 3274# define __attribute__nonnull__(a)
f22be1b8
JH
3275#endif
3276#ifndef __attribute__noreturn__
abb2c242 3277# define __attribute__noreturn__
f22be1b8
JH
3278#endif
3279#ifndef __attribute__pure__
abb2c242 3280# define __attribute__pure__
f22be1b8 3281#endif
0dbb1585
AL
3282#ifndef __attribute__unused__
3283# define __attribute__unused__
3284#endif
f22be1b8 3285#ifndef __attribute__warn_unused_result__
abb2c242
JH
3286# define __attribute__warn_unused_result__
3287#endif
3288
cd13e623
JH
3289#if defined(DEBUGGING) && defined(I_ASSERT)
3290# include <assert.h>
3291#endif
3292
0dbb1585
AL
3293/* For functions that are marked as __attribute__noreturn__, it's not
3294 appropriate to call return. In either case, include the lint directive.
3295 */
3296#ifdef HASATTRIBUTE_NORETURN
ae103e09 3297# define NORETURN_FUNCTION_END NOT_REACHED; /* NOTREACHED */
0dbb1585 3298#else
ae103e09 3299# define NORETURN_FUNCTION_END NOT_REACHED; /* NOTREACHED */ return 0
abb2c242
JH
3300#endif
3301
cdfeb707
RB
3302/* Some OS warn on NULL format to printf */
3303#ifdef PRINTF_FORMAT_NULL_OK
3304# define __attribute__format__null_ok__(x,y,z) __attribute__format__(x,y,z)
3305#else
00f254e2 3306# define __attribute__format__null_ok__(x,y,z)
cdfeb707
RB
3307#endif
3308
635aebb7 3309#ifdef HAS_BUILTIN_EXPECT
b37c2d43
AL
3310# define EXPECT(expr,val) __builtin_expect(expr,val)
3311#else
3312# define EXPECT(expr,val) (expr)
3313#endif
6d5abc62
NC
3314#define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
3315#define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
635aebb7
AL
3316#ifdef HAS_BUILTIN_CHOOSE_EXPR
3317/* placeholder */
3318#endif
b37c2d43 3319
ae103e09
DD
3320
3321#ifndef __has_builtin
3322# define __has_builtin(x) 0 /* not a clang style compiler */
3323#endif
3324
3325/* ASSUME is like assert(), but it has a benefit in a release build. It is a
3326 hint to a compiler about a statement of fact in a function call free
3327 expression, which allows the compiler to generate better machine code.
3328 In a debug build, ASSUME(x) is a synonym for assert(x). ASSUME(0) means
3329 the control path is unreachable. In a for loop, ASSUME can be used to hint
3330 that a loop will run atleast X times. ASSUME is based off MSVC's __assume
3331 intrinsic function, see its documents for more details.
3332*/
3333
3334#ifndef DEBUGGING
3335# if __has_builtin(__builtin_unreachable) \
3336 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5 || __GNUC__ > 5) /* 4.5 -> */
3337# define ASSUME(x) ((x) ? (void) 0 : __builtin_unreachable())
3338# elif defined(_MSC_VER)
3339# define ASSUME(x) __assume(x)
3340# elif defined(__ARMCC_VERSION) /* untested */
3341# define ASSUME(x) __promise(x)
3342# else
3343/* a random compiler might define assert to its own special optimization token
3344 so pass it through to C lib as a last resort */
3345# define ASSUME(x) assert(x)
3346# endif
3347#else
3348# define ASSUME(x) assert(x)
3349#endif
3350
3351#define NOT_REACHED ASSUME(0)
3352
3fc1aec6
PP
3353/* Some unistd.h's give a prototype for pause() even though
3354 HAS_PAUSE ends up undefined. This causes the #define
d2560b70 3355 below to be rejected by the compiler. Sigh.
3fc1aec6
PP
3356*/
3357#ifdef HAS_PAUSE
3358#define Pause pause
3359#else
3360#define Pause() sleep((32767<<16)+32767)
748a9306
LW
3361#endif
3362
3363#ifndef IOCPARM_LEN
3364# ifdef IOCPARM_MASK
61f1c44b 3365 /* on BSDish systems we're safe */
748a9306
LW
3366# define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
3367# else
61f1c44b 3368# if defined(_IOC_SIZE) && defined(__GLIBC__)
301eb2f0
GA
3369 /* on Linux systems we're safe; except when we're not [perl #38223] */
3370# define IOCPARM_LEN(x) (_IOC_SIZE(x) < 256 ? 256 : _IOC_SIZE(x))
61f1c44b 3371# else
748a9306 3372 /* otherwise guess at what's safe */
61f1c44b
JVD
3373# define IOCPARM_LEN(x) 256
3374# endif
748a9306 3375# endif
a0d0e21e
LW
3376#endif
3377
1761cee5 3378#if defined(__CYGWIN__)
521e0776
GS
3379/* USEMYBINMODE
3380 * This symbol, if defined, indicates that the program should
16fe6d59 3381 * use the routine my_binmode(FILE *fp, char iotype, int mode) to insure
521e0776
GS
3382 * that a file is in "binary" mode -- that is, that no translation
3383 * of bytes occurs on read or write operations.
3384 */
36894f0b 3385# define USEMYBINMODE /**/
77a40698 3386# include <io.h> /* for setmode() prototype */
16fe6d59 3387# define my_binmode(fp, iotype, mode) \
77a40698 3388 (PerlLIO_setmode(fileno(fp), mode) != -1 ? TRUE : FALSE)
5aabfad6
PP
3389#endif
3390
88d10794
JH
3391#ifdef __CYGWIN__
3392void init_os_extras(void);
3393#endif
3394
cea2e8a9
GS
3395#ifdef UNION_ANY_DEFINITION
3396UNION_ANY_DEFINITION;
3397#else
3398union any {
3399 void* any_ptr;
3400 I32 any_i32;
ae103e09 3401 U32 any_u32;
cea2e8a9 3402 IV any_iv;
c6bf6a65 3403 UV any_uv;
cea2e8a9 3404 long any_long;
9febdf04 3405 bool any_bool;
c76ac1ee 3406 void (*any_dptr) (void*);
acfe0abc 3407 void (*any_dxptr) (pTHX_ void*);
cea2e8a9
GS
3408};
3409#endif
3410
acfe0abc 3411typedef I32 (*filter_t) (pTHX_ int, SV *, int);
cea2e8a9
GS
3412
3413#define FILTER_READ(idx, sv, len) filter_read(idx, sv, len)
5486870f
DM
3414#define FILTER_DATA(idx) \
3415 (PL_parser ? AvARRAY(PL_parser->rsfp_filters)[idx] : NULL)
3416#define FILTER_ISREADER(idx) \
3417 (PL_parser && PL_parser->rsfp_filters \
3418 && idx >= AvFILLp(PL_parser->rsfp_filters))
3419#define PERL_FILTER_EXISTS(i) \
3420 (PL_parser && PL_parser->rsfp_filters \
b9f2b683 3421 && (i) <= av_tindex(PL_parser->rsfp_filters))
cea2e8a9 3422
c5078cac
JH
3423#if defined(_AIX) && !defined(_AIX43)
3424#if defined(USE_REENTRANT) || defined(_REENTRANT) || defined(_THREAD_SAFE)
3425/* We cannot include <crypt.h> to get the struct crypt_data
3426 * because of setkey prototype problems when threading */
3427typedef struct crypt_data { /* straight from /usr/include/crypt.h */
3428 /* From OSF, Not needed in AIX
3429 char C[28], D[28];
3430 */
3431 char E[48];
3432 char KS[16][48];
3433 char block[66];
3434 char iobuf[16];
3435} CRYPTD;
3436#endif /* threading */
3437#endif /* AIX */
3438
e37778c2 3439#if !defined(OS2)
2c2d71f5
JH
3440# include "iperlsys.h"
3441#endif
504f80c1 3442
9c12f1e5 3443#ifdef __LIBCATAMOUNT__
00f254e2 3444#undef HAS_PASSWD /* unixish.h but not unixish enough. */
9c12f1e5
RGS
3445#undef HAS_GROUP
3446#define FAKE_BIT_BUCKET
3447#endif
3448
d10dc2ae
JH
3449/* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0.
3450 * Note that the USE_HASH_SEED and USE_HASH_SEED_EXPLICIT are *NOT*
3451 * defined by Configure, despite their names being similar to the
3452 * other defines like USE_ITHREADS. Configure in fact knows nothing
3453 * about the randomised hashes. Therefore to enable/disable the hash
3454 * randomisation defines use the Configure -Accflags=... instead. */
504f80c1 3455#if !defined(NO_HASH_SEED) && !defined(USE_HASH_SEED) && !defined(USE_HASH_SEED_EXPLICIT)
4546b9e6 3456# define USE_HASH_SEED
504f80c1
JH
3457#endif
3458
598921a7
NC
3459/* Win32 defines a type 'WORD' in windef.h. This conflicts with the enumerator
3460 * 'WORD' defined in perly.h. The yytokentype enum is only a debugging aid, so
3461 * it's not really needed.
3462 */
3463#if defined(WIN32)
3464# define YYTOKENTYPE
3465#endif
3466#include "perly.h"
3467
598921a7 3468
654eccd5
JD
3469/* macros to define bit-fields in structs. */
3470#ifndef PERL_BITFIELD8
3471# define PERL_BITFIELD8 unsigned
3472#endif
3473#ifndef PERL_BITFIELD16
3474# define PERL_BITFIELD16 unsigned
3475#endif
3476#ifndef PERL_BITFIELD32
3477# define PERL_BITFIELD32 unsigned
3478#endif
3479
79072805 3480#include "sv.h"
288b8c02 3481#include "regexp.h"
378cc40b 3482#include "util.h"
8d063cd8 3483#include "form.h"
79072805 3484#include "gv.h"
dd2155a4 3485#include "pad.h"
79072805 3486#include "cv.h"
abdd5c84 3487#include "opnames.h"
79072805 3488#include "op.h"
b3ca2e83 3489#include "hv.h"
79072805
LW
3490#include "cop.h"
3491#include "av.h"
79072805
LW
3492#include "mg.h"
3493#include "scope.h"
4438c4b7 3494#include "warnings.h"
a0ed51b3 3495#include "utf8.h"
8d063cd8 3496
0d7d409d
DM
3497/* these would be in doio.h if there was such a file */
3498#define my_stat() my_stat_flags(SV_GMAGIC)
3499#define my_lstat() my_lstat_flags(SV_GMAGIC)
3500
20f4945e 3501/* defined in sv.c, but also used in [ach]v.c */
20f4945e
MHM
3502#undef _XPV_HEAD
3503#undef _XPVMG_HEAD
3504#undef _XPVCV_COMMON
7fae4e64
GS
3505
3506typedef struct _sublex_info SUBLEXINFO;
3507struct _sublex_info {
651b5b28
NC
3508 U8 super_state; /* lexer state to save */
3509 U16 sub_inwhat; /* "lex_inwhat" to use */
7fae4e64 3510 OP *sub_op; /* "lex_op" to use */
7cc34111 3511 SV *repl; /* replacement of s/// or y/// */
7fae4e64
GS
3512};
3513
199e78b7
DM
3514#include "parser.h"
3515
455ece5e 3516typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
76e3520e 3517
2260ab51
KW
3518#if defined(PERL_IN_REGCOMP_C) || defined(PERL_IN_REGEXEC_C)
3519
3520/* These have to be predeclared, as they are used in proto.h which is #included
3521 * before their definitions in regcomp.h. */
3522
3523struct scan_data_t;
7dcac5f6
KW
3524typedef struct regnode_charclass regnode_charclass;
3525
2260ab51 3526struct regnode_charclass_class;
d1d040e5
KW
3527
3528/* A hopefully less confusing name. The sub-classes are all Posix classes only
3529 * used under /l matching */
3530typedef struct regnode_charclass_class regnode_charclass_posixl;
3531
b8f7bb16 3532typedef struct regnode_ssc regnode_ssc;
09b2b2e6
KW
3533typedef struct RExC_state_t RExC_state_t;
3534struct _reg_trie_data;
76e3520e 3535
2260ab51
KW
3536#endif
3537
5f7fde29
GS
3538struct ptr_tbl_ent {
3539 struct ptr_tbl_ent* next;
53c1dcc0 3540 const void* oldval;
5f7fde29 3541 void* newval;
d18c6117
GS
3542};
3543
5f7fde29
GS
3544struct ptr_tbl {
3545 struct ptr_tbl_ent** tbl_ary;
3546 UV tbl_max;
3547 UV tbl_items;
db93c0c4
NC
3548 struct ptr_tbl_arena *tbl_arena;
3549 struct ptr_tbl_ent *tbl_arena_next;
3550 struct ptr_tbl_ent *tbl_arena_end;
d18c6117
GS
3551};
3552
fe14fcc3
LW
3553#if defined(htonl) && !defined(HAS_HTONL)
3554#define HAS_HTONL
ae986130 3555#endif
fe14fcc3
LW
3556#if defined(htons) && !defined(HAS_HTONS)
3557#define HAS_HTONS
ae986130 3558#endif
fe14fcc3
LW
3559#if defined(ntohl) && !defined(HAS_NTOHL)
3560#define HAS_NTOHL
ae986130 3561#endif
fe14fcc3
LW
3562#if defined(ntohs) && !defined(HAS_NTOHS)
3563#define HAS_NTOHS
ae986130 3564#endif
fe14fcc3 3565#ifndef HAS_HTONL
fe14fcc3
LW
3566#define HAS_HTONS
3567#define HAS_HTONL
3568#define HAS_NTOHS
3569#define HAS_NTOHL
8e2d7c44
NC
3570# if (BYTEORDER & 0xffff) == 0x4321
3571/* Big endian system, so ntohl, ntohs, htonl and htons do not need to
3572 re-order their values. However, to behave identically to the alternative
3573 implementations, they should truncate to the correct size. */
3574# define ntohl(x) ((x)&0xFFFFFFFF)
3575# define htonl(x) ntohl(x)
3576# define ntohs(x) ((x)&0xFFFF)
3577# define htons(x) ntohs(x)
e4b03fed
NC
3578# elif BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
3579
3580/* Note that we can't straight out declare our own htonl and htons because
3581 the Win32 build process forcibly undefines HAS_HTONL etc for its miniperl,
3582 to avoid the overhead of initialising the socket subsystem, but the headers
3583 that *declare* the various functions are still seen. If we declare our own
3584 htonl etc they will clash with the declarations in the Win32 headers. */
3585
3586PERL_STATIC_INLINE U32
3587my_swap32(const U32 x) {
3588 return ((x & 0xFF) << 24) | ((x >> 24) & 0xFF)
3589 | ((x & 0x0000FF00) << 8) | ((x & 0x00FF0000) >> 8);
3590}
3591
3592PERL_STATIC_INLINE U16
3593my_swap16(const U16 x) {
3594 return ((x & 0xFF) << 8) | ((x >> 8) & 0xFF);
3595}
3596
3597# define htonl(x) my_swap32(x)
3598# define ntohl(x) my_swap32(x)
3599# define ntohs(x) my_swap16(x)
3600# define htons(x) my_swap16(x)
8e2d7c44 3601# else
691a44df
NC
3602# error "Unsupported byteorder"
3603/* The C pre-processor doesn't let us return the value of BYTEORDER as part of
3604 the error message. Please check the value of the macro BYTEORDER, as defined
3605 in config.h. The values of BYTEORDER we expect are
3606
3607 big endian little endian
3608 32 bit 0x4321 0x1234
3609 64 bit 0x87654321 0x12345678
3610
3611 If you have a system with a different byte order, please see
3612 pod/perlhack.pod for how to submit a patch to add supporting code.
3613*/
3614# endif
a687059c
LW
3615#endif
3616
988174c1
LW
3617/*
3618 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
3619 * -DWS
3620 */
5ae72479 3621#if BYTEORDER == 0x1234 || BYTEORDER == 0x12345678
260c6fee
NC
3622/* Little endian system, so vtohl, vtohs, htovl and htovs do not need to
3623 re-order their values. However, to behave identically to the alternative
3624 implementations, they should truncate to the correct size. */
3625# define vtohl(x) ((x)&0xFFFFFFFF)
3626# define vtohs(x) ((x)&0xFFFF)
3627# define htovl(x) vtohl(x)
3628# define htovs(x) vtohs(x)
545872c5 3629#elif BYTEORDER == 0x4321 || BYTEORDER == 0x87654321
988174c1
LW
3630# define vtohl(x) ((((x)&0xFF)<<24) \
3631 +(((x)>>24)&0xFF) \
3632 +(((x)&0x0000FF00)<<8) \
3633 +(((x)&0x00FF0000)>>8) )
3634# define vtohs(x) ((((x)&0xFF)<<8) + (((x)>>8)&0xFF))
3635# define htovl(x) vtohl(x)
3636# define htovs(x) vtohs(x)
545872c5
NC
3637#else
3638# error "Unsupported byteorder"
3639/* If you have need for current perl on PDP-11 or similar, and can help test
3640 that blead keeps working on a mixed-endian system, then see
3641 pod/perlhack.pod for how to submit patches to things working again. */
2a8c3029 3642#endif
988174c1 3643
3bb7c1b4
JH
3644/* *MAX Plus 1. A floating point value.
3645 Hopefully expressed in a way that dodgy floating point can't mess up.
3646 >> 2 rather than 1, so that value is safely less than I32_MAX after 1
3647 is added to it
3648 May find that some broken compiler will want the value cast to I32.
3649 [after the shift, as signed >> may not be as secure as unsigned >>]
3650*/
3651#define I32_MAX_P1 (2.0 * (1 + (((U32)I32_MAX) >> 1)))
3652#define U32_MAX_P1 (4.0 * (1 + ((U32_MAX) >> 2)))
3653/* For compilers that can't correctly cast NVs over 0x7FFFFFFF (or
3654 0x7FFFFFFFFFFFFFFF) to an unsigned integer. In the future, sizeof(UV)
3655 may be greater than sizeof(IV), so don't assume that half max UV is max IV.
3656*/
3657#define U32_MAX_P1_HALF (2.0 * (1 + ((U32_MAX) >> 2)))
ee0007ab 3658
3bb7c1b4
JH
3659#define UV_MAX_P1 (4.0 * (1 + ((UV_MAX) >> 2)))
3660#define IV_MAX_P1 (2.0 * (1 + (((UV)IV_MAX) >> 1)))
3661#define UV_MAX_P1_HALF (2.0 * (1 + ((UV_MAX) >> 2)))
3662
3663/* This may look like unnecessary jumping through hoops, but converting
3664 out of range floating point values to integers *is* undefined behaviour,
3665 and it is starting to bite.
3666*/
3667#ifndef CAST_INLINE
65202027 3668#define I_32(what) (cast_i32((NV)(what)))
3bb7c1b4 3669#define U_32(what) (cast_ulong((NV)(what)))
65202027
DS
3670#define I_V(what) (cast_iv((NV)(what)))
3671#define U_V(what) (cast_uv((NV)(what)))
3bb7c1b4
JH
3672#else
3673#define I_32(n) ((n) < I32_MAX_P1 ? ((n) < I32_MIN ? I32_MIN : (I32) (n)) \
3674 : ((n) < U32_MAX_P1 ? (I32)(U32) (n) \
3675 : ((n) > 0 ? (I32) U32_MAX : 0 /* NaN */)))
3676#define U_32(n) ((n) < 0.0 ? ((n) < I32_MIN ? (UV) I32_MIN : (U32)(I32) (n)) \
3677 : ((n) < U32_MAX_P1 ? (U32) (n) \
3678 : ((n) > 0 ? U32_MAX : 0 /* NaN */)))
5d9574c1
DM
3679#define I_V(n) (LIKELY((n) < IV_MAX_P1) ? (UNLIKELY((n) < IV_MIN) ? IV_MIN : (IV) (n)) \
3680 : (LIKELY((n) < UV_MAX_P1) ? (IV)(UV) (n) \
3bb7c1b4 3681 : ((n) > 0 ? (IV)UV_MAX : 0 /* NaN */)))
5d9574c1
DM
3682#define U_V(n) ((n) < 0.0 ? (UNLIKELY((n) < IV_MIN) ? (UV) IV_MIN : (UV)(IV) (n)) \
3683 : (LIKELY((n) < UV_MAX_P1) ? (UV) (n) \
3bb7c1b4
JH
3684 : ((n) > 0 ? UV_MAX : 0 /* NaN */)))
3685#endif
3686
3687#define U_S(what) ((U16)U_32(what))
3688#define U_I(what) ((unsigned int)U_32(what))
3689#define U_L(what) U_32(what)
ed6116ce 3690
ed140128
AD
3691#ifdef HAS_SIGNBIT
3692# define Perl_signbit signbit
3693#endif
3694
2d4389e4
JH
3695/* These do not care about the fractional part, only about the range. */
3696#define NV_WITHIN_IV(nv) (I_V(nv) >= IV_MIN && I_V(nv) <= IV_MAX)
24db6c0d 3697#define NV_WITHIN_UV(nv) ((nv)>=0.0 && U_V(nv) >= UV_MIN && U_V(nv) <= UV_MAX)
2d4389e4 3698
25da4f38
IZ
3699/* Used with UV/IV arguments: */
3700 /* XXXX: need to speed it up */
3701#define CLUMP_2UV(iv) ((iv) < 0 ? 0 : (UV)(iv))
3702#define CLUMP_2IV(uv) ((uv) > (UV)IV_MAX ? IV_MAX : (IV)(uv))
3703
352d5a3a
LW
3704#ifndef MAXSYSFD
3705# define MAXSYSFD 2
3706#endif
ee0007ab 3707
79072805 3708#ifndef __cplusplus
e37d7e38 3709#if !(defined(WIN32) || defined(UNDER_CE) || defined(SYMBIAN))
20ce7b12
GS
3710Uid_t getuid (void);
3711Uid_t geteuid (void);
3712Gid_t getgid (void);
3713Gid_t getegid (void);
79072805 3714#endif
e1caacb4 3715#endif
8d063cd8 3716
0c30d9ec 3717#ifndef Perl_debug_log
bf49b057
GS
3718# define Perl_debug_log PerlIO_stderr()
3719#endif
3720
3721#ifndef Perl_error_log
3722# define Perl_error_log (PL_stderrgv \
6b78add2 3723 && isGV(PL_stderrgv) \
01bb7c6d 3724 && GvIOp(PL_stderrgv) \
42de951c 3725 && IoOFP(GvIOp(PL_stderrgv)) \
bf49b057
GS
3726 ? IoOFP(GvIOp(PL_stderrgv)) \
3727 : PerlIO_stderr())
0c30d9ec 3728#endif
3967c732 3729
aea4f609
DM
3730
3731#define DEBUG_p_FLAG 0x00000001 /* 1 */
3732#define DEBUG_s_FLAG 0x00000002 /* 2 */
3733#define DEBUG_l_FLAG 0x00000004 /* 4 */
3734#define DEBUG_t_FLAG 0x00000008 /* 8 */
3735#define DEBUG_o_FLAG 0x00000010 /* 16 */
3736#define DEBUG_c_FLAG 0x00000020 /* 32 */
3737#define DEBUG_P_FLAG 0x00000040 /* 64 */
3738#define DEBUG_m_FLAG 0x00000080 /* 128 */
3739#define DEBUG_f_FLAG 0x00000100 /* 256 */
3740#define DEBUG_r_FLAG 0x00000200 /* 512 */
3741#define DEBUG_x_FLAG 0x00000400 /* 1024 */
3742#define DEBUG_u_FLAG 0x00000800 /* 2048 */