xref: /freebsd/contrib/lua/src/luaconf.h.dist (revision eac7052fdebb90caf2f653e06187bdbca837b9c7)
1/*
2** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 roberto Exp $
3** Configuration file for Lua
4** See Copyright Notice in lua.h
5*/
6
7
8#ifndef luaconf_h
9#define luaconf_h
10
11#include <limits.h>
12#include <stddef.h>
13
14
15/*
16** ===================================================================
17** Search for "@@" to find all configurable definitions.
18** ===================================================================
19*/
20
21
22/*
23** {====================================================================
24** System Configuration: macros to adapt (if needed) Lua to some
25** particular platform, for instance compiling it with 32-bit numbers or
26** restricting it to C89.
27** =====================================================================
28*/
29
30/*
31@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
32** can also define LUA_32BITS in the make file, but changing here you
33** ensure that all software connected to Lua will be compiled with the
34** same configuration.
35*/
36/* #define LUA_32BITS */
37
38
39/*
40@@ LUA_USE_C89 controls the use of non-ISO-C89 features.
41** Define it if you want Lua to avoid the use of a few C99 features
42** or Windows-specific features on Windows.
43*/
44/* #define LUA_USE_C89 */
45
46
47/*
48** By default, Lua on Windows use (some) specific Windows features
49*/
50#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
51#define LUA_USE_WINDOWS  /* enable goodies for regular Windows */
52#endif
53
54
55#if defined(LUA_USE_WINDOWS)
56#define LUA_DL_DLL	/* enable support for DLL */
57#define LUA_USE_C89	/* broadly, Windows is C89 */
58#endif
59
60
61#if defined(LUA_USE_LINUX)
62#define LUA_USE_POSIX
63#define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
64#define LUA_USE_READLINE	/* needs some extra libraries */
65#endif
66
67
68#if defined(LUA_USE_MACOSX)
69#define LUA_USE_POSIX
70#define LUA_USE_DLOPEN		/* MacOS does not need -ldl */
71#define LUA_USE_READLINE	/* needs an extra library: -lreadline */
72#endif
73
74
75/*
76@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
77** C89 ('long' and 'double'); Windows always has '__int64', so it does
78** not need to use this case.
79*/
80#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
81#define LUA_C89_NUMBERS
82#endif
83
84
85
86/*
87@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
88*/
89/* avoid undefined shifts */
90#if ((INT_MAX >> 15) >> 15) >= 1
91#define LUAI_BITSINT	32
92#else
93/* 'int' always must have at least 16 bits */
94#define LUAI_BITSINT	16
95#endif
96
97
98/*
99@@ LUA_INT_TYPE defines the type for Lua integers.
100@@ LUA_FLOAT_TYPE defines the type for Lua floats.
101** Lua should work fine with any mix of these options (if supported
102** by your C compiler). The usual configurations are 64-bit integers
103** and 'double' (the default), 32-bit integers and 'float' (for
104** restricted platforms), and 'long'/'double' (for C compilers not
105** compliant with C99, which may not have support for 'long long').
106*/
107
108/* predefined options for LUA_INT_TYPE */
109#define LUA_INT_INT		1
110#define LUA_INT_LONG		2
111#define LUA_INT_LONGLONG	3
112
113/* predefined options for LUA_FLOAT_TYPE */
114#define LUA_FLOAT_FLOAT		1
115#define LUA_FLOAT_DOUBLE	2
116#define LUA_FLOAT_LONGDOUBLE	3
117#define LUA_FLOAT_INT64		4
118
119#if defined(LUA_32BITS)		/* { */
120/*
121** 32-bit integers and 'float'
122*/
123#if LUAI_BITSINT >= 32  /* use 'int' if big enough */
124#define LUA_INT_TYPE	LUA_INT_INT
125#else  /* otherwise use 'long' */
126#define LUA_INT_TYPE	LUA_INT_LONG
127#endif
128#define LUA_FLOAT_TYPE	LUA_FLOAT_FLOAT
129
130#elif defined(LUA_C89_NUMBERS)	/* }{ */
131/*
132** largest types available for C89 ('long' and 'double')
133*/
134#define LUA_INT_TYPE	LUA_INT_LONG
135#define LUA_FLOAT_TYPE	LUA_FLOAT_DOUBLE
136
137#endif				/* } */
138
139
140/*
141** default configuration for 64-bit Lua ('long long' and 'double')
142*/
143#if !defined(LUA_INT_TYPE)
144#define LUA_INT_TYPE	LUA_INT_LONGLONG
145#endif
146
147#if !defined(LUA_FLOAT_TYPE)
148#define LUA_FLOAT_TYPE	LUA_FLOAT_DOUBLE
149#endif
150
151/* }================================================================== */
152
153
154
155
156/*
157** {==================================================================
158** Configuration for Paths.
159** ===================================================================
160*/
161
162/*
163** LUA_PATH_SEP is the character that separates templates in a path.
164** LUA_PATH_MARK is the string that marks the substitution points in a
165** template.
166** LUA_EXEC_DIR in a Windows path is replaced by the executable's
167** directory.
168*/
169#define LUA_PATH_SEP            ";"
170#define LUA_PATH_MARK           "?"
171#define LUA_EXEC_DIR            "!"
172
173
174/*
175@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
176** Lua libraries.
177@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
178** C libraries.
179** CHANGE them if your machine has a non-conventional directory
180** hierarchy or if you want to install your libraries in
181** non-conventional directories.
182*/
183#define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
184#if defined(_WIN32)	/* { */
185/*
186** In Windows, any exclamation mark ('!') in the path is replaced by the
187** path of the directory of the executable file of the current process.
188*/
189#define LUA_LDIR	"!\\lua\\"
190#define LUA_CDIR	"!\\"
191#define LUA_SHRDIR	"!\\..\\share\\lua\\" LUA_VDIR "\\"
192#define LUA_PATH_DEFAULT  \
193		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
194		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \
195		LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
196		".\\?.lua;" ".\\?\\init.lua"
197#define LUA_CPATH_DEFAULT \
198		LUA_CDIR"?.dll;" \
199		LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
200		LUA_CDIR"loadall.dll;" ".\\?.dll"
201
202#else			/* }{ */
203
204#define LUA_ROOT	"/usr/local/"
205#define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR "/"
206#define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR "/"
207#define LUA_PATH_DEFAULT  \
208		LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
209		LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" \
210		"./?.lua;" "./?/init.lua"
211#define LUA_CPATH_DEFAULT \
212		LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
213#endif			/* } */
214
215
216/*
217@@ LUA_DIRSEP is the directory separator (for submodules).
218** CHANGE it if your machine does not use "/" as the directory separator
219** and is not Windows. (On Windows Lua automatically uses "\".)
220*/
221#if defined(_WIN32)
222#define LUA_DIRSEP	"\\"
223#else
224#define LUA_DIRSEP	"/"
225#endif
226
227/* }================================================================== */
228
229
230/*
231** {==================================================================
232** Marks for exported symbols in the C code
233** ===================================================================
234*/
235
236/*
237@@ LUA_API is a mark for all core API functions.
238@@ LUALIB_API is a mark for all auxiliary library functions.
239@@ LUAMOD_API is a mark for all standard library opening functions.
240** CHANGE them if you need to define those functions in some special way.
241** For instance, if you want to create one Windows DLL with the core and
242** the libraries, you may want to use the following definition (define
243** LUA_BUILD_AS_DLL to get it).
244*/
245#if defined(LUA_BUILD_AS_DLL)	/* { */
246
247#if defined(LUA_CORE) || defined(LUA_LIB)	/* { */
248#define LUA_API __declspec(dllexport)
249#else						/* }{ */
250#define LUA_API __declspec(dllimport)
251#endif						/* } */
252
253#else				/* }{ */
254
255#define LUA_API		extern
256
257#endif				/* } */
258
259
260/* more often than not the libs go together with the core */
261#define LUALIB_API	LUA_API
262#define LUAMOD_API	LUALIB_API
263
264
265/*
266@@ LUAI_FUNC is a mark for all extern functions that are not to be
267** exported to outside modules.
268@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
269** that are not to be exported to outside modules (LUAI_DDEF for
270** definitions and LUAI_DDEC for declarations).
271** CHANGE them if you need to mark them in some special way. Elf/gcc
272** (versions 3.2 and later) mark them as "hidden" to optimize access
273** when Lua is compiled as a shared library. Not all elf targets support
274** this attribute. Unfortunately, gcc does not offer a way to check
275** whether the target offers that support, and those without support
276** give a warning about it. To avoid these warnings, change to the
277** default definition.
278*/
279#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
280    defined(__ELF__)		/* { */
281#define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
282#else				/* }{ */
283#define LUAI_FUNC	extern
284#endif				/* } */
285
286#define LUAI_DDEC	LUAI_FUNC
287#define LUAI_DDEF	/* empty */
288
289/* }================================================================== */
290
291
292/*
293** {==================================================================
294** Compatibility with previous versions
295** ===================================================================
296*/
297
298/*
299@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
300@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
301** You can define it to get all options, or change specific options
302** to fit your specific needs.
303*/
304#if defined(LUA_COMPAT_5_2)	/* { */
305
306/*
307@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
308** functions in the mathematical library.
309*/
310#define LUA_COMPAT_MATHLIB
311
312/*
313@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
314*/
315#define LUA_COMPAT_BITLIB
316
317/*
318@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
319*/
320#define LUA_COMPAT_IPAIRS
321
322/*
323@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
324** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
325** luaL_checkint, luaL_checklong, etc.)
326*/
327#define LUA_COMPAT_APIINTCASTS
328
329#endif				/* } */
330
331
332#if defined(LUA_COMPAT_5_1)	/* { */
333
334/* Incompatibilities from 5.2 -> 5.3 */
335#define LUA_COMPAT_MATHLIB
336#define LUA_COMPAT_APIINTCASTS
337
338/*
339@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
340** You can replace it with 'table.unpack'.
341*/
342#define LUA_COMPAT_UNPACK
343
344/*
345@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
346** You can replace it with 'package.searchers'.
347*/
348#define LUA_COMPAT_LOADERS
349
350/*
351@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
352** You can call your C function directly (with light C functions).
353*/
354#define lua_cpcall(L,f,u)  \
355	(lua_pushcfunction(L, (f)), \
356	 lua_pushlightuserdata(L,(u)), \
357	 lua_pcall(L,1,0,0))
358
359
360/*
361@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
362** You can rewrite 'log10(x)' as 'log(x, 10)'.
363*/
364#define LUA_COMPAT_LOG10
365
366/*
367@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
368** library. You can rewrite 'loadstring(s)' as 'load(s)'.
369*/
370#define LUA_COMPAT_LOADSTRING
371
372/*
373@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
374*/
375#define LUA_COMPAT_MAXN
376
377/*
378@@ The following macros supply trivial compatibility for some
379** changes in the API. The macros themselves document how to
380** change your code to avoid using them.
381*/
382#define lua_strlen(L,i)		lua_rawlen(L, (i))
383
384#define lua_objlen(L,i)		lua_rawlen(L, (i))
385
386#define lua_equal(L,idx1,idx2)		lua_compare(L,(idx1),(idx2),LUA_OPEQ)
387#define lua_lessthan(L,idx1,idx2)	lua_compare(L,(idx1),(idx2),LUA_OPLT)
388
389/*
390@@ LUA_COMPAT_MODULE controls compatibility with previous
391** module functions 'module' (Lua) and 'luaL_register' (C).
392*/
393#define LUA_COMPAT_MODULE
394
395#endif				/* } */
396
397
398/*
399@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
400@@ a float mark ('.0').
401** This macro is not on by default even in compatibility mode,
402** because this is not really an incompatibility.
403*/
404/* #define LUA_COMPAT_FLOATSTRING */
405
406/* }================================================================== */
407
408
409
410/*
411** {==================================================================
412** Configuration for Numbers.
413** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
414** satisfy your needs.
415** ===================================================================
416*/
417
418/*
419@@ LUA_NUMBER is the floating-point type used by Lua.
420@@ LUAI_UACNUMBER is the result of a 'default argument promotion'
421@@ over a floating number.
422@@ l_mathlim(x) corrects limit name 'x' to the proper float type
423** by prefixing it with one of FLT/DBL/LDBL.
424@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
425@@ LUA_NUMBER_FMT is the format for writing floats.
426@@ lua_number2str converts a float to a string.
427@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
428@@ l_floor takes the floor of a float.
429@@ lua_str2number converts a decimal numeric string to a number.
430*/
431
432
433/* The following definitions are good for most cases here */
434
435#define l_floor(x)		(l_mathop(floor)(x))
436
437#define lua_number2str(s,sz,n)  \
438	l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
439
440/*
441@@ lua_numbertointeger converts a float number to an integer, or
442** returns 0 if float is not within the range of a lua_Integer.
443** (The range comparisons are tricky because of rounding. The tests
444** here assume a two-complement representation, where MININTEGER always
445** has an exact representation as a float; MAXINTEGER may not have one,
446** and therefore its conversion to float may have an ill-defined value.)
447*/
448#define lua_numbertointeger(n,p) \
449  ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
450   (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
451      (*(p) = (LUA_INTEGER)(n), 1))
452
453
454/* now the variable definitions */
455
456#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT		/* { single float */
457
458#define LUA_NUMBER	float
459
460#define l_mathlim(n)		(FLT_##n)
461
462#define LUAI_UACNUMBER	double
463
464#define LUA_NUMBER_FRMLEN	""
465#define LUA_NUMBER_FMT		"%.7g"
466
467#define l_mathop(op)		op##f
468
469#define lua_str2number(s,p)	strtof((s), (p))
470
471
472#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE	/* }{ long double */
473
474#define LUA_NUMBER	long double
475
476#define l_mathlim(n)		(LDBL_##n)
477
478#define LUAI_UACNUMBER	long double
479
480#define LUA_NUMBER_FRMLEN	"L"
481#define LUA_NUMBER_FMT		"%.19Lg"
482
483#define l_mathop(op)		op##l
484
485#define lua_str2number(s,p)	strtold((s), (p))
486
487#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE	/* }{ double */
488
489#define LUA_NUMBER	double
490
491#define l_mathlim(n)		(DBL_##n)
492
493#define LUAI_UACNUMBER	double
494
495#define LUA_NUMBER_FRMLEN	""
496#define LUA_NUMBER_FMT		"%.14g"
497
498#define l_mathop(op)		op
499
500#define lua_str2number(s,p)	strtod((s), (p))
501
502#else						/* }{ */
503
504#error "numeric float type not defined"
505
506#endif					/* } */
507
508
509
510/*
511@@ LUA_INTEGER is the integer type used by Lua.
512**
513@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
514**
515@@ LUAI_UACINT is the result of a 'default argument promotion'
516@@ over a lUA_INTEGER.
517@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
518@@ LUA_INTEGER_FMT is the format for writing integers.
519@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
520@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
521@@ lua_integer2str converts an integer to a string.
522*/
523
524
525/* The following definitions are good for most cases here */
526
527#define LUA_INTEGER_FMT		"%" LUA_INTEGER_FRMLEN "d"
528
529#define LUAI_UACINT		LUA_INTEGER
530
531#define lua_integer2str(s,sz,n)  \
532	l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
533
534/*
535** use LUAI_UACINT here to avoid problems with promotions (which
536** can turn a comparison between unsigneds into a signed comparison)
537*/
538#define LUA_UNSIGNED		unsigned LUAI_UACINT
539
540
541/* now the variable definitions */
542
543#if LUA_INT_TYPE == LUA_INT_INT		/* { int */
544
545#define LUA_INTEGER		int
546#define LUA_INTEGER_FRMLEN	""
547
548#define LUA_MAXINTEGER		INT_MAX
549#define LUA_MININTEGER		INT_MIN
550
551#elif LUA_INT_TYPE == LUA_INT_LONG	/* }{ long */
552
553#define LUA_INTEGER		long
554#define LUA_INTEGER_FRMLEN	"l"
555
556#define LUA_MAXINTEGER		LONG_MAX
557#define LUA_MININTEGER		LONG_MIN
558
559#elif LUA_INT_TYPE == LUA_INT_LONGLONG	/* }{ long long */
560
561/* use presence of macro LLONG_MAX as proxy for C99 compliance */
562#if defined(LLONG_MAX)		/* { */
563/* use ISO C99 stuff */
564
565#define LUA_INTEGER		long long
566#define LUA_INTEGER_FRMLEN	"ll"
567
568#define LUA_MAXINTEGER		LLONG_MAX
569#define LUA_MININTEGER		LLONG_MIN
570
571#elif defined(LUA_USE_WINDOWS) /* }{ */
572/* in Windows, can use specific Windows types */
573
574#define LUA_INTEGER		__int64
575#define LUA_INTEGER_FRMLEN	"I64"
576
577#define LUA_MAXINTEGER		_I64_MAX
578#define LUA_MININTEGER		_I64_MIN
579
580#else				/* }{ */
581
582#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
583  or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
584
585#endif				/* } */
586
587#else				/* }{ */
588
589#error "numeric integer type not defined"
590
591#endif				/* } */
592
593/* }================================================================== */
594
595
596/*
597** {==================================================================
598** Dependencies with C99 and other C details
599** ===================================================================
600*/
601
602/*
603@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89.
604** (All uses in Lua have only one format item.)
605*/
606#if !defined(LUA_USE_C89)
607#define l_sprintf(s,sz,f,i)	snprintf(s,sz,f,i)
608#else
609#define l_sprintf(s,sz,f,i)	((void)(sz), sprintf(s,f,i))
610#endif
611
612
613/*
614@@ lua_strx2number converts an hexadecimal numeric string to a number.
615** In C99, 'strtod' does that conversion. Otherwise, you can
616** leave 'lua_strx2number' undefined and Lua will provide its own
617** implementation.
618*/
619#if !defined(LUA_USE_C89)
620#define lua_strx2number(s,p)		lua_str2number(s,p)
621#endif
622
623
624/*
625@@ lua_pointer2str converts a pointer to a readable string in a
626** non-specified way.
627*/
628#define lua_pointer2str(buff,sz,p)	l_sprintf(buff,sz,"%p",p)
629
630
631/*
632@@ lua_number2strx converts a float to an hexadecimal numeric string.
633** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
634** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
635** provide its own implementation.
636*/
637#if !defined(LUA_USE_C89)
638#define lua_number2strx(L,b,sz,f,n)  \
639	((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
640#endif
641
642
643/*
644** 'strtof' and 'opf' variants for math functions are not valid in
645** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
646** availability of these variants. ('math.h' is already included in
647** all files that use these macros.)
648*/
649#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
650#undef l_mathop  /* variants not available */
651#undef lua_str2number
652#define l_mathop(op)		(lua_Number)op  /* no variant */
653#define lua_str2number(s,p)	((lua_Number)strtod((s), (p)))
654#endif
655
656
657/*
658@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
659** functions.  It must be a numerical type; Lua will use 'intptr_t' if
660** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
661** 'intptr_t' in C89)
662*/
663#define LUA_KCONTEXT	ptrdiff_t
664
665#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
666    __STDC_VERSION__ >= 199901L
667#include <stdint.h>
668#if defined(INTPTR_MAX)  /* even in C99 this type is optional */
669#undef LUA_KCONTEXT
670#define LUA_KCONTEXT	intptr_t
671#endif
672#endif
673
674
675/*
676@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
677** Change that if you do not want to use C locales. (Code using this
678** macro must include header 'locale.h'.)
679*/
680#if !defined(lua_getlocaledecpoint)
681#define lua_getlocaledecpoint()		(localeconv()->decimal_point[0])
682#endif
683
684/* }================================================================== */
685
686
687/*
688** {==================================================================
689** Language Variations
690** =====================================================================
691*/
692
693/*
694@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
695** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
696** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
697** coercion from strings to numbers.
698*/
699/* #define LUA_NOCVTN2S */
700/* #define LUA_NOCVTS2N */
701
702
703/*
704@@ LUA_USE_APICHECK turns on several consistency checks on the C API.
705** Define it as a help when debugging C code.
706*/
707#if defined(LUA_USE_APICHECK)
708#include <assert.h>
709#define luai_apicheck(l,e)	assert(e)
710#endif
711
712/* }================================================================== */
713
714
715/*
716** {==================================================================
717** Macros that affect the API and must be stable (that is, must be the
718** same when you compile Lua and when you compile code that links to
719** Lua). You probably do not want/need to change them.
720** =====================================================================
721*/
722
723/*
724@@ LUAI_MAXSTACK limits the size of the Lua stack.
725** CHANGE it if you need a different limit. This limit is arbitrary;
726** its only purpose is to stop Lua from consuming unlimited stack
727** space (and to reserve some numbers for pseudo-indices).
728*/
729#if LUAI_BITSINT >= 32
730#define LUAI_MAXSTACK		1000000
731#else
732#define LUAI_MAXSTACK		15000
733#endif
734
735
736/*
737@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
738** a Lua state with very fast access.
739** CHANGE it if you need a different size.
740*/
741#define LUA_EXTRASPACE		(sizeof(void *))
742
743
744/*
745@@ LUA_IDSIZE gives the maximum size for the description of the source
746@@ of a function in debug information.
747** CHANGE it if you want a different size.
748*/
749#define LUA_IDSIZE	60
750
751
752/*
753@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
754** CHANGE it if it uses too much C-stack space. (For long double,
755** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a
756** smaller buffer would force a memory allocation for each call to
757** 'string.format'.)
758*/
759#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE
760#define LUAL_BUFFERSIZE		8192
761#else
762#define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
763#endif
764
765/* }================================================================== */
766
767
768/*
769@@ LUA_QL describes how error messages quote program elements.
770** Lua does not use these macros anymore; they are here for
771** compatibility only.
772*/
773#define LUA_QL(x)	"'" x "'"
774#define LUA_QS		LUA_QL("%s")
775
776
777
778
779/* =================================================================== */
780
781/*
782** Local configuration. You can use this space to add your redefinitions
783** without modifying the main part of the file.
784*/
785
786
787
788
789
790#endif
791
792