The Battle for Wesnoth  1.15.10+dev
luaconf.h
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1 /*
2 ** $Id: luaconf.h $
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 ** General Configuration File for Lua
18 **
19 ** Some definitions here can be changed externally, through the
20 ** compiler (e.g., with '-D' options). Those are protected by
21 ** '#if !defined' guards. However, several other definitions should
22 ** be changed directly here, either because they affect the Lua
23 ** ABI (by making the changes here, you ensure that all software
24 ** connected to Lua, such as C libraries, will be compiled with the
25 ** same configuration); or because they are seldom changed.
26 **
27 ** Search for "@@" to find all configurable definitions.
28 ** ===================================================================
29 */
30 
31 
32 /*
33 ** {====================================================================
34 ** System Configuration: macros to adapt (if needed) Lua to some
35 ** particular platform, for instance restricting it to C89.
36 ** =====================================================================
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 #endif
65 
66 
67 #if defined(LUA_USE_MACOSX)
68 #define LUA_USE_POSIX
69 #define LUA_USE_DLOPEN /* MacOS does not need -ldl */
70 #endif
71 
72 
73 /*
74 @@ LUAI_IS32INT is true iff 'int' has (at least) 32 bits.
75 */
76 #define LUAI_IS32INT ((UINT_MAX >> 30) >= 3)
77 
78 /* }================================================================== */
79 
80 
81 
82 /*
83 ** {==================================================================
84 ** Configuration for Number types.
85 ** ===================================================================
86 */
87 
88 /*
89 @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats.
90 */
91 /* #define LUA_32BITS */
92 
93 
94 /*
95 @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
96 ** C89 ('long' and 'double'); Windows always has '__int64', so it does
97 ** not need to use this case.
98 */
99 #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
100 #define LUA_C89_NUMBERS
101 #endif
102 
103 
104 /*
105 @@ LUA_INT_TYPE defines the type for Lua integers.
106 @@ LUA_FLOAT_TYPE defines the type for Lua floats.
107 ** Lua should work fine with any mix of these options supported
108 ** by your C compiler. The usual configurations are 64-bit integers
109 ** and 'double' (the default), 32-bit integers and 'float' (for
110 ** restricted platforms), and 'long'/'double' (for C compilers not
111 ** compliant with C99, which may not have support for 'long long').
112 */
113 
114 /* predefined options for LUA_INT_TYPE */
115 #define LUA_INT_INT 1
116 #define LUA_INT_LONG 2
117 #define LUA_INT_LONGLONG 3
118 
119 /* predefined options for LUA_FLOAT_TYPE */
120 #define LUA_FLOAT_FLOAT 1
121 #define LUA_FLOAT_DOUBLE 2
122 #define LUA_FLOAT_LONGDOUBLE 3
123 
124 #if defined(LUA_32BITS) /* { */
125 /*
126 ** 32-bit integers and 'float'
127 */
128 #if LUAI_IS32INT /* use 'int' if big enough */
129 #define LUA_INT_TYPE LUA_INT_INT
130 #else /* otherwise use 'long' */
131 #define LUA_INT_TYPE LUA_INT_LONG
132 #endif
133 #define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT
134 
135 #elif defined(LUA_C89_NUMBERS) /* }{ */
136 /*
137 ** largest types available for C89 ('long' and 'double')
138 */
139 #define LUA_INT_TYPE LUA_INT_LONG
140 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE
141 
142 #endif /* } */
143 
144 
145 /*
146 ** default configuration for 64-bit Lua ('long long' and 'double')
147 */
148 #if !defined(LUA_INT_TYPE)
149 #define LUA_INT_TYPE LUA_INT_LONGLONG
150 #endif
151 
152 #if !defined(LUA_FLOAT_TYPE)
153 #define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE
154 #endif
155 
156 /* }================================================================== */
157 
158 
159 
160 /*
161 ** {==================================================================
162 ** Configuration for Paths.
163 ** ===================================================================
164 */
165 
166 /*
167 ** LUA_PATH_SEP is the character that separates templates in a path.
168 ** LUA_PATH_MARK is the string that marks the substitution points in a
169 ** template.
170 ** LUA_EXEC_DIR in a Windows path is replaced by the executable's
171 ** directory.
172 */
173 #define LUA_PATH_SEP ";"
174 #define LUA_PATH_MARK "?"
175 #define LUA_EXEC_DIR "!"
176 
177 
178 /*
179 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
180 ** Lua libraries.
181 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
182 ** C libraries.
183 ** CHANGE them if your machine has a non-conventional directory
184 ** hierarchy or if you want to install your libraries in
185 ** non-conventional directories.
186 */
187 
188 #define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
189 #if defined(_WIN32) /* { */
190 /*
191 ** In Windows, any exclamation mark ('!') in the path is replaced by the
192 ** path of the directory of the executable file of the current process.
193 */
194 #define LUA_LDIR "!\\lua\\"
195 #define LUA_CDIR "!\\"
196 #define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\"
197 
198 #if !defined(LUA_PATH_DEFAULT)
199 #define LUA_PATH_DEFAULT \
200  LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
201  LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \
202  LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
203  ".\\?.lua;" ".\\?\\init.lua"
204 #endif
205 
206 #if !defined(LUA_CPATH_DEFAULT)
207 #define LUA_CPATH_DEFAULT \
208  LUA_CDIR"?.dll;" \
209  LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
210  LUA_CDIR"loadall.dll;" ".\\?.dll"
211 #endif
212 
213 #else /* }{ */
214 
215 #define LUA_ROOT "/usr/local/"
216 #define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/"
217 #define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/"
218 
219 #if !defined(LUA_PATH_DEFAULT)
220 #define LUA_PATH_DEFAULT \
221  LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
222  LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \
223  "./?.lua;" "./?/init.lua"
224 #endif
225 
226 #if !defined(LUA_CPATH_DEFAULT)
227 #define LUA_CPATH_DEFAULT \
228  LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
229 #endif
230 
231 #endif /* } */
232 
233 
234 /*
235 @@ LUA_DIRSEP is the directory separator (for submodules).
236 ** CHANGE it if your machine does not use "/" as the directory separator
237 ** and is not Windows. (On Windows Lua automatically uses "\".)
238 */
239 #if !defined(LUA_DIRSEP)
240 
241 #if defined(_WIN32)
242 #define LUA_DIRSEP "\\"
243 #else
244 #define LUA_DIRSEP "/"
245 #endif
246 
247 #endif
248 
249 /* }================================================================== */
250 
251 
252 /*
253 ** {==================================================================
254 ** Marks for exported symbols in the C code
255 ** ===================================================================
256 */
257 
258 /*
259 @@ LUA_API is a mark for all core API functions.
260 @@ LUALIB_API is a mark for all auxiliary library functions.
261 @@ LUAMOD_API is a mark for all standard library opening functions.
262 ** CHANGE them if you need to define those functions in some special way.
263 ** For instance, if you want to create one Windows DLL with the core and
264 ** the libraries, you may want to use the following definition (define
265 ** LUA_BUILD_AS_DLL to get it).
266 */
267 #if defined(LUA_BUILD_AS_DLL) /* { */
268 
269 #if defined(LUA_CORE) || defined(LUA_LIB) /* { */
270 #define LUA_API __declspec(dllexport)
271 #else /* }{ */
272 #define LUA_API __declspec(dllimport)
273 #endif /* } */
274 
275 #else /* }{ */
276 
277 #define LUA_API extern
278 
279 #endif /* } */
280 
281 
282 /*
283 ** More often than not the libs go together with the core.
284 */
285 #define LUALIB_API LUA_API
286 #define LUAMOD_API LUA_API
287 
288 
289 /*
290 @@ LUAI_FUNC is a mark for all extern functions that are not to be
291 ** exported to outside modules.
292 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables,
293 ** none of which to be exported to outside modules (LUAI_DDEF for
294 ** definitions and LUAI_DDEC for declarations).
295 ** CHANGE them if you need to mark them in some special way. Elf/gcc
296 ** (versions 3.2 and later) mark them as "hidden" to optimize access
297 ** when Lua is compiled as a shared library. Not all elf targets support
298 ** this attribute. Unfortunately, gcc does not offer a way to check
299 ** whether the target offers that support, and those without support
300 ** give a warning about it. To avoid these warnings, change to the
301 ** default definition.
302 */
303 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
304  defined(__ELF__) /* { */
305 #define LUAI_FUNC __attribute__((visibility("internal"))) extern
306 #else /* }{ */
307 #define LUAI_FUNC extern
308 #endif /* } */
309 
310 #define LUAI_DDEC(dec) LUAI_FUNC dec
311 #define LUAI_DDEF /* empty */
312 
313 /* }================================================================== */
314 
315 
316 /*
317 ** {==================================================================
318 ** Compatibility with previous versions
319 ** ===================================================================
320 */
321 
322 /*
323 @@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.3.
324 ** You can define it to get all options, or change specific options
325 ** to fit your specific needs.
326 */
327 #if defined(LUA_COMPAT_5_3) /* { */
328 
329 /*
330 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
331 ** functions in the mathematical library.
332 ** (These functions were already officially removed in 5.3;
333 ** nevertheless they are still available here.)
334 */
335 #define LUA_COMPAT_MATHLIB
336 
337 /*
338 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
339 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
340 ** luaL_checkint, luaL_checklong, etc.)
341 ** (These macros were also officially removed in 5.3, but they are still
342 ** available here.)
343 */
344 #define LUA_COMPAT_APIINTCASTS
345 
346 
347 /*
348 @@ LUA_COMPAT_LT_LE controls the emulation of the '__le' metamethod
349 ** using '__lt'.
350 */
351 #define LUA_COMPAT_LT_LE
352 
353 
354 /*
355 @@ The following macros supply trivial compatibility for some
356 ** changes in the API. The macros themselves document how to
357 ** change your code to avoid using them.
358 ** (Once more, these macros were officially removed in 5.3, but they are
359 ** still available here.)
360 */
361 #define lua_strlen(L,i) lua_rawlen(L, (i))
362 
363 #define lua_objlen(L,i) lua_rawlen(L, (i))
364 
365 #define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
366 #define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)
367 
368 #endif /* } */
369 
370 /* }================================================================== */
371 
372 
373 
374 /*
375 ** {==================================================================
376 ** Configuration for Numbers.
377 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
378 ** satisfy your needs.
379 ** ===================================================================
380 */
381 
382 /*
383 @@ LUA_NUMBER is the floating-point type used by Lua.
384 @@ LUAI_UACNUMBER is the result of a 'default argument promotion'
385 @@ over a floating number.
386 @@ l_floatatt(x) corrects float attribute 'x' to the proper float type
387 ** by prefixing it with one of FLT/DBL/LDBL.
388 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
389 @@ LUA_NUMBER_FMT is the format for writing floats.
390 @@ lua_number2str converts a float to a string.
391 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
392 @@ l_floor takes the floor of a float.
393 @@ lua_str2number converts a decimal numeral to a number.
394 */
395 
396 
397 /* The following definitions are good for most cases here */
398 
399 #define l_floor(x) (l_mathop(floor)(x))
400 
401 #define lua_number2str(s,sz,n) \
402  l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
403 
404 /*
405 @@ lua_numbertointeger converts a float number with an integral value
406 ** to an integer, or returns 0 if float is not within the range of
407 ** a lua_Integer. (The range comparisons are tricky because of
408 ** rounding. The tests here assume a two-complement representation,
409 ** where MININTEGER always has an exact representation as a float;
410 ** MAXINTEGER may not have one, and therefore its conversion to float
411 ** may have an ill-defined value.)
412 */
413 #define lua_numbertointeger(n,p) \
414  ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
415  (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
416  (*(p) = (LUA_INTEGER)(n), 1))
417 
418 
419 /* now the variable definitions */
420 
421 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */
422 
423 #define LUA_NUMBER float
424 
425 #define l_floatatt(n) (FLT_##n)
426 
427 #define LUAI_UACNUMBER double
428 
429 #define LUA_NUMBER_FRMLEN ""
430 #define LUA_NUMBER_FMT "%.7g"
431 
432 #define l_mathop(op) op##f
433 
434 #define lua_str2number(s,p) strtof((s), (p))
435 
436 
437 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */
438 
439 #define LUA_NUMBER long double
440 
441 #define l_floatatt(n) (LDBL_##n)
442 
443 #define LUAI_UACNUMBER long double
444 
445 #define LUA_NUMBER_FRMLEN "L"
446 #define LUA_NUMBER_FMT "%.19Lg"
447 
448 #define l_mathop(op) op##l
449 
450 #define lua_str2number(s,p) strtold((s), (p))
451 
452 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */
453 
454 #define LUA_NUMBER double
455 
456 #define l_floatatt(n) (DBL_##n)
457 
458 #define LUAI_UACNUMBER double
459 
460 #define LUA_NUMBER_FRMLEN ""
461 #define LUA_NUMBER_FMT "%.14g"
462 
463 #define l_mathop(op) op
464 
465 #define lua_str2number(s,p) strtod((s), (p))
466 
467 #else /* }{ */
468 
469 #error "numeric float type not defined"
470 
471 #endif /* } */
472 
473 
474 
475 /*
476 @@ LUA_INTEGER is the integer type used by Lua.
477 **
478 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
479 **
480 @@ LUAI_UACINT is the result of a 'default argument promotion'
481 @@ over a LUA_INTEGER.
482 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
483 @@ LUA_INTEGER_FMT is the format for writing integers.
484 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
485 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
486 @@ LUA_MAXUNSIGNED is the maximum value for a LUA_UNSIGNED.
487 @@ LUA_UNSIGNEDBITS is the number of bits in a LUA_UNSIGNED.
488 @@ lua_integer2str converts an integer to a string.
489 */
490 
491 
492 /* The following definitions are good for most cases here */
493 
494 #define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
495 
496 #define LUAI_UACINT LUA_INTEGER
497 
498 #define lua_integer2str(s,sz,n) \
499  l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
500 
501 /*
502 ** use LUAI_UACINT here to avoid problems with promotions (which
503 ** can turn a comparison between unsigneds into a signed comparison)
504 */
505 #define LUA_UNSIGNED unsigned LUAI_UACINT
506 
507 
508 #define LUA_UNSIGNEDBITS (sizeof(LUA_UNSIGNED) * CHAR_BIT)
509 
510 
511 /* now the variable definitions */
512 
513 #if LUA_INT_TYPE == LUA_INT_INT /* { int */
514 
515 #define LUA_INTEGER int
516 #define LUA_INTEGER_FRMLEN ""
517 
518 #define LUA_MAXINTEGER INT_MAX
519 #define LUA_MININTEGER INT_MIN
520 
521 #define LUA_MAXUNSIGNED UINT_MAX
522 
523 #elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */
524 
525 #define LUA_INTEGER long
526 #define LUA_INTEGER_FRMLEN "l"
527 
528 #define LUA_MAXINTEGER LONG_MAX
529 #define LUA_MININTEGER LONG_MIN
530 
531 #define LUA_MAXUNSIGNED ULONG_MAX
532 
533 #elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */
534 
535 /* use presence of macro LLONG_MAX as proxy for C99 compliance */
536 #if defined(LLONG_MAX) /* { */
537 /* use ISO C99 stuff */
538 
539 #define LUA_INTEGER long long
540 #define LUA_INTEGER_FRMLEN "ll"
541 
542 #define LUA_MAXINTEGER LLONG_MAX
543 #define LUA_MININTEGER LLONG_MIN
544 
545 #define LUA_MAXUNSIGNED ULLONG_MAX
546 
547 #elif defined(LUA_USE_WINDOWS) /* }{ */
548 /* in Windows, can use specific Windows types */
549 
550 #define LUA_INTEGER __int64
551 #define LUA_INTEGER_FRMLEN "I64"
552 
553 #define LUA_MAXINTEGER _I64_MAX
554 #define LUA_MININTEGER _I64_MIN
555 
556 #define LUA_MAXUNSIGNED _UI64_MAX
557 
558 #else /* }{ */
559 
560 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
561  or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
562 
563 #endif /* } */
564 
565 #else /* }{ */
566 
567 #error "numeric integer type not defined"
568 
569 #endif /* } */
570 
571 /* }================================================================== */
572 
573 
574 /*
575 ** {==================================================================
576 ** Dependencies with C99 and other C details
577 ** ===================================================================
578 */
579 
580 /*
581 @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89.
582 ** (All uses in Lua have only one format item.)
583 */
584 #if !defined(LUA_USE_C89)
585 #define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i)
586 #else
587 #define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i))
588 #endif
589 
590 
591 /*
592 @@ lua_strx2number converts a hexadecimal numeral to a number.
593 ** In C99, 'strtod' does that conversion. Otherwise, you can
594 ** leave 'lua_strx2number' undefined and Lua will provide its own
595 ** implementation.
596 */
597 #if !defined(LUA_USE_C89)
598 #define lua_strx2number(s,p) lua_str2number(s,p)
599 #endif
600 
601 
602 /*
603 @@ lua_pointer2str converts a pointer to a readable string in a
604 ** non-specified way.
605 */
606 #define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p)
607 
608 
609 /*
610 @@ lua_number2strx converts a float to a hexadecimal numeral.
611 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
612 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
613 ** provide its own implementation.
614 */
615 #if !defined(LUA_USE_C89)
616 #define lua_number2strx(L,b,sz,f,n) \
617  ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
618 #endif
619 
620 
621 /*
622 ** 'strtof' and 'opf' variants for math functions are not valid in
623 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
624 ** availability of these variants. ('math.h' is already included in
625 ** all files that use these macros.)
626 */
627 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
628 #undef l_mathop /* variants not available */
629 #undef lua_str2number
630 #define l_mathop(op) (lua_Number)op /* no variant */
631 #define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
632 #endif
633 
634 
635 /*
636 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
637 ** functions. It must be a numerical type; Lua will use 'intptr_t' if
638 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
639 ** 'intptr_t' in C89)
640 */
641 #define LUA_KCONTEXT ptrdiff_t
642 
643 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
644  __STDC_VERSION__ >= 199901L
645 #include <stdint.h>
646 #if defined(INTPTR_MAX) /* even in C99 this type is optional */
647 #undef LUA_KCONTEXT
648 #define LUA_KCONTEXT intptr_t
649 #endif
650 #endif
651 
652 
653 /*
654 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
655 ** Change that if you do not want to use C locales. (Code using this
656 ** macro must include the header 'locale.h'.)
657 */
658 #if !defined(lua_getlocaledecpoint)
659 #define lua_getlocaledecpoint() (localeconv()->decimal_point[0])
660 #endif
661 
662 /* }================================================================== */
663 
664 
665 /*
666 ** {==================================================================
667 ** Language Variations
668 ** =====================================================================
669 */
670 
671 /*
672 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
673 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
674 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
675 ** coercion from strings to numbers.
676 */
677 /* #define LUA_NOCVTN2S */
678 /* #define LUA_NOCVTS2N */
679 
680 
681 /*
682 @@ LUA_USE_APICHECK turns on several consistency checks on the C API.
683 ** Define it as a help when debugging C code.
684 */
685 #if defined(LUA_USE_APICHECK)
686 #include <assert.h>
687 #define luai_apicheck(l,e) assert(e)
688 #endif
689 
690 /* }================================================================== */
691 
692 
693 /*
694 ** {==================================================================
695 ** Macros that affect the API and must be stable (that is, must be the
696 ** same when you compile Lua and when you compile code that links to
697 ** Lua).
698 ** =====================================================================
699 */
700 
701 /*
702 @@ LUAI_MAXSTACK limits the size of the Lua stack.
703 ** CHANGE it if you need a different limit. This limit is arbitrary;
704 ** its only purpose is to stop Lua from consuming unlimited stack
705 ** space (and to reserve some numbers for pseudo-indices).
706 ** (It must fit into max(size_t)/32.)
707 */
708 #if LUAI_IS32INT
709 #define LUAI_MAXSTACK 1000000
710 #else
711 #define LUAI_MAXSTACK 15000
712 #endif
713 
714 
715 /*
716 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with
717 ** a Lua state with very fast access.
718 ** CHANGE it if you need a different size.
719 */
720 #define LUA_EXTRASPACE (sizeof(void *))
721 
722 
723 /*
724 @@ LUA_IDSIZE gives the maximum size for the description of the source
725 @@ of a function in debug information.
726 ** CHANGE it if you want a different size.
727 */
728 #define LUA_IDSIZE 60
729 
730 
731 /*
732 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
733 */
734 #define LUAL_BUFFERSIZE (static_cast<int>(16 * sizeof(void*) * sizeof(lua_Number)))
735 
736 
737 /*
738 @@ LUAI_MAXALIGN defines fields that, when used in a union, ensure
739 ** maximum alignment for the other items in that union.
740 */
741 #define LUAI_MAXALIGN lua_Number n; double u; void *s; lua_Integer i; long l
742 
743 /* }================================================================== */
744 
745 
746 
747 
748 
749 /* =================================================================== */
750 
751 /*
752 ** Local configuration. You can use this space to add your redefinitions
753 ** without modifying the main part of the file.
754 */
755 
756 
757 
758 
759 
760 #endif
761