ceph/src/civetweb/src/third_party/lua-5.3.1/src/luaconf.h

   1 /*
   2 ** $Id: luaconf.h,v 1.251 2015/05/20 17:39:23 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
 118 #if defined(LUA_32BITS)         /* { */
 119 /*
 120 ** 32-bit integers and 'float'
 121 */
 122 #if LUAI_BITSINT >= 32  /* use 'int' if big enough */
 123 #define LUA_INT_TYPE    LUA_INT_INT
 124 #else  /* otherwise use 'long' */
 125 #define LUA_INT_TYPE    LUA_INT_LONG
 126 #endif
 127 #define LUA_FLOAT_TYPE  LUA_FLOAT_FLOAT
 128
 129 #elif defined(LUA_C89_NUMBERS)  /* }{ */
 130 /*
 131 ** largest types available for C89 ('long' and 'double')
 132 */
 133 #define LUA_INT_TYPE    LUA_INT_LONG
 134 #define LUA_FLOAT_TYPE  LUA_FLOAT_DOUBLE
 135
 136 #endif                          /* } */
 137
 138
 139 /*
 140 ** default configuration for 64-bit Lua ('long long' and 'double')
 141 */
 142 #if !defined(LUA_INT_TYPE)
 143 #define LUA_INT_TYPE    LUA_INT_LONGLONG
 144 #endif
 145
 146 #if !defined(LUA_FLOAT_TYPE)
 147 #define LUA_FLOAT_TYPE  LUA_FLOAT_DOUBLE
 148 #endif                                                          /* } */
 149
 150 /* }================================================================== */
 151
 152
 153
 154
 155 /*
 156 ** {==================================================================
 157 ** Configuration for Paths.
 158 ** ===================================================================
 159 */
 160
 161 /*
 162 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
 163 ** Lua libraries.
 164 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
 165 ** C libraries.
 166 ** CHANGE them if your machine has a non-conventional directory
 167 ** hierarchy or if you want to install your libraries in
 168 ** non-conventional directories.
 169 */
 170 #define LUA_VDIR        LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
 171 #if defined(_WIN32)     /* { */
 172 /*
 173 ** In Windows, any exclamation mark ('!') in the path is replaced by the
 174 ** path of the directory of the executable file of the current process.
 175 */
 176 #define LUA_LDIR        "!\\lua\\"
 177 #define LUA_CDIR        "!\\"
 178 #define LUA_SHRDIR      "!\\..\\share\\lua\\" LUA_VDIR "\\"
 179 #define LUA_PATH_DEFAULT  \
 180                 LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
 181                 LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \
 182                 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
 183                 ".\\?.lua;" ".\\?\\init.lua"
 184 #define LUA_CPATH_DEFAULT \
 185                 LUA_CDIR"?.dll;" \
 186                 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
 187                 LUA_CDIR"loadall.dll;" ".\\?.dll"
 188
 189 #else                   /* }{ */
 190
 191 #define LUA_ROOT        "/usr/local/"
 192 #define LUA_LDIR        LUA_ROOT "share/lua/" LUA_VDIR "/"
 193 #define LUA_CDIR        LUA_ROOT "lib/lua/" LUA_VDIR "/"
 194 #define LUA_PATH_DEFAULT  \
 195                 LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
 196                 LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" \
 197                 "./?.lua;" "./?/init.lua"
 198 #define LUA_CPATH_DEFAULT \
 199                 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
 200 #endif                  /* } */
 201
 202
 203 /*
 204 @@ LUA_DIRSEP is the directory separator (for submodules).
 205 ** CHANGE it if your machine does not use "/" as the directory separator
 206 ** and is not Windows. (On Windows Lua automatically uses "\".)
 207 */
 208 #if defined(_WIN32)
 209 #define LUA_DIRSEP      "\\"
 210 #else
 211 #define LUA_DIRSEP      "/"
 212 #endif
 213
 214 /* }================================================================== */
 215
 216
 217 /*
 218 ** {==================================================================
 219 ** Marks for exported symbols in the C code
 220 ** ===================================================================
 221 */
 222
 223 /*
 224 @@ LUA_API is a mark for all core API functions.
 225 @@ LUALIB_API is a mark for all auxiliary library functions.
 226 @@ LUAMOD_API is a mark for all standard library opening functions.
 227 ** CHANGE them if you need to define those functions in some special way.
 228 ** For instance, if you want to create one Windows DLL with the core and
 229 ** the libraries, you may want to use the following definition (define
 230 ** LUA_BUILD_AS_DLL to get it).
 231 */
 232 #if defined(LUA_BUILD_AS_DLL)   /* { */
 233
 234 #if defined(LUA_CORE) || defined(LUA_LIB)       /* { */
 235 #define LUA_API __declspec(dllexport)
 236 #else                                           /* }{ */
 237 #define LUA_API __declspec(dllimport)
 238 #endif                                          /* } */
 239
 240 #else                           /* }{ */
 241
 242 #define LUA_API         extern
 243
 244 #endif                          /* } */
 245
 246
 247 /* more often than not the libs go together with the core */
 248 #define LUALIB_API      LUA_API
 249 #define LUAMOD_API      LUALIB_API
 250
 251
 252 /*
 253 @@ LUAI_FUNC is a mark for all extern functions that are not to be
 254 ** exported to outside modules.
 255 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
 256 ** that are not to be exported to outside modules (LUAI_DDEF for
 257 ** definitions and LUAI_DDEC for declarations).
 258 ** CHANGE them if you need to mark them in some special way. Elf/gcc
 259 ** (versions 3.2 and later) mark them as "hidden" to optimize access
 260 ** when Lua is compiled as a shared library. Not all elf targets support
 261 ** this attribute. Unfortunately, gcc does not offer a way to check
 262 ** whether the target offers that support, and those without support
 263 ** give a warning about it. To avoid these warnings, change to the
 264 ** default definition.
 265 */
 266 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
 267     defined(__ELF__)            /* { */
 268 #define LUAI_FUNC       __attribute__((visibility("hidden"))) extern
 269 #else                           /* }{ */
 270 #define LUAI_FUNC       extern
 271 #endif                          /* } */
 272
 273 #define LUAI_DDEC       LUAI_FUNC
 274 #define LUAI_DDEF       /* empty */
 275
 276 /* }================================================================== */
 277
 278
 279 /*
 280 ** {==================================================================
 281 ** Compatibility with previous versions
 282 ** ===================================================================
 283 */
 284
 285 /*
 286 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
 287 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
 288 ** You can define it to get all options, or change specific options
 289 ** to fit your specific needs.
 290 */
 291 #if defined(LUA_COMPAT_5_2)     /* { */
 292
 293 /*
 294 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
 295 ** functions in the mathematical library.
 296 */
 297 #define LUA_COMPAT_MATHLIB
 298
 299 /*
 300 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
 301 */
 302 #define LUA_COMPAT_BITLIB
 303
 304 /*
 305 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
 306 */
 307 #define LUA_COMPAT_IPAIRS
 308
 309 /*
 310 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
 311 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
 312 ** luaL_checkint, luaL_checklong, etc.)
 313 */
 314 #define LUA_COMPAT_APIINTCASTS
 315
 316 #endif                          /* } */
 317
 318
 319 #if defined(LUA_COMPAT_5_1)     /* { */
 320
 321 /* Incompatibilities from 5.2 -> 5.3 */
 322 #define LUA_COMPAT_MATHLIB
 323 #define LUA_COMPAT_APIINTCASTS
 324
 325 /*
 326 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
 327 ** You can replace it with 'table.unpack'.
 328 */
 329 #define LUA_COMPAT_UNPACK
 330
 331 /*
 332 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
 333 ** You can replace it with 'package.searchers'.
 334 */
 335 #define LUA_COMPAT_LOADERS
 336
 337 /*
 338 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
 339 ** You can call your C function directly (with light C functions).
 340 */
 341 #define lua_cpcall(L,f,u)  \
 342         (lua_pushcfunction(L, (f)), \
 343          lua_pushlightuserdata(L,(u)), \
 344          lua_pcall(L,1,0,0))
 345
 346
 347 /*
 348 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
 349 ** You can rewrite 'log10(x)' as 'log(x, 10)'.
 350 */
 351 #define LUA_COMPAT_LOG10
 352
 353 /*
 354 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
 355 ** library. You can rewrite 'loadstring(s)' as 'load(s)'.
 356 */
 357 #define LUA_COMPAT_LOADSTRING
 358
 359 /*
 360 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
 361 */
 362 #define LUA_COMPAT_MAXN
 363
 364 /*
 365 @@ The following macros supply trivial compatibility for some
 366 ** changes in the API. The macros themselves document how to
 367 ** change your code to avoid using them.
 368 */
 369 #define lua_strlen(L,i)         lua_rawlen(L, (i))
 370
 371 #define lua_objlen(L,i)         lua_rawlen(L, (i))
 372
 373 #define lua_equal(L,idx1,idx2)          lua_compare(L,(idx1),(idx2),LUA_OPEQ)
 374 #define lua_lessthan(L,idx1,idx2)       lua_compare(L,(idx1),(idx2),LUA_OPLT)
 375
 376 /*
 377 @@ LUA_COMPAT_MODULE controls compatibility with previous
 378 ** module functions 'module' (Lua) and 'luaL_register' (C).
 379 */
 380 #define LUA_COMPAT_MODULE
 381
 382 #endif                          /* } */
 383
 384
 385 /*
 386 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
 387 @@ a float mark ('.0').
 388 ** This macro is not on by default even in compatibility mode,
 389 ** because this is not really an incompatibility.
 390 */
 391 /* #define LUA_COMPAT_FLOATSTRING */
 392
 393 /* }================================================================== */
 394
 395
 396
 397 /*
 398 ** {==================================================================
 399 ** Configuration for Numbers.
 400 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
 401 ** satisfy your needs.
 402 ** ===================================================================
 403 */
 404
 405 /*
 406 @@ LUA_NUMBER is the floating-point type used by Lua.
 407 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
 408 @@ over a floating number.
 409 @@ l_mathlim(x) corrects limit name 'x' to the proper float type
 410 ** by prefixing it with one of FLT/DBL/LDBL.
 411 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
 412 @@ LUA_NUMBER_FMT is the format for writing floats.
 413 @@ lua_number2str converts a float to a string.
 414 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
 415 @@ lua_str2number converts a decimal numeric string to a number.
 416 */
 417
 418 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT           /* { single float */
 419
 420 #define LUA_NUMBER      float
 421
 422 #define l_mathlim(n)            (FLT_##n)
 423
 424 #define LUAI_UACNUMBER  double
 425
 426 #define LUA_NUMBER_FRMLEN       ""
 427 #define LUA_NUMBER_FMT          "%.7g"
 428
 429 #define l_mathop(op)            op##f
 430
 431 #define lua_str2number(s,p)     strtof((s), (p))
 432
 433
 434 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE    /* }{ long double */
 435
 436 #define LUA_NUMBER      long double
 437
 438 #define l_mathlim(n)            (LDBL_##n)
 439
 440 #define LUAI_UACNUMBER  long double
 441
 442 #define LUA_NUMBER_FRMLEN       "L"
 443 #define LUA_NUMBER_FMT          "%.19Lg"
 444
 445 #define l_mathop(op)            op##l
 446
 447 #define lua_str2number(s,p)     strtold((s), (p))
 448
 449 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE        /* }{ double */
 450
 451 #define LUA_NUMBER      double
 452
 453 #define l_mathlim(n)            (DBL_##n)
 454
 455 #define LUAI_UACNUMBER  double
 456
 457 #define LUA_NUMBER_FRMLEN       ""
 458 #define LUA_NUMBER_FMT          "%.14g"
 459
 460 #define l_mathop(op)            op
 461
 462 #define lua_str2number(s,p)     strtod((s), (p))
 463
 464 #else                                           /* }{ */
 465
 466 #error "numeric float type not defined"
 467
 468 #endif                                  /* } */
 469
 470
 471 #define l_floor(x)              (l_mathop(floor)(x))
 472
 473 #define lua_number2str(s,n)     sprintf((s), LUA_NUMBER_FMT, (n))
 474
 475
 476 /*
 477 @@ lua_numbertointeger converts a float number to an integer, or
 478 ** returns 0 if float is not within the range of a lua_Integer.
 479 ** (The range comparisons are tricky because of rounding. The tests
 480 ** here assume a two-complement representation, where MININTEGER always
 481 ** has an exact representation as a float; MAXINTEGER may not have one,
 482 ** and therefore its conversion to float may have an ill-defined value.)
 483 */
 484 #define lua_numbertointeger(n,p) \
 485   ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
 486    (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
 487       (*(p) = (LUA_INTEGER)(n), 1))
 488
 489
 490
 491 /*
 492 @@ LUA_INTEGER is the integer type used by Lua.
 493 **
 494 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
 495 **
 496 @@ LUAI_UACINT is the result of an 'usual argument conversion'
 497 @@ over a lUA_INTEGER.
 498 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
 499 @@ LUA_INTEGER_FMT is the format for writing integers.
 500 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
 501 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
 502 @@ lua_integer2str converts an integer to a string.
 503 */
 504
 505
 506 /* The following definitions are good for most cases here */
 507
 508 #define LUA_INTEGER_FMT         "%" LUA_INTEGER_FRMLEN "d"
 509 #define lua_integer2str(s,n)    sprintf((s), LUA_INTEGER_FMT, (n))
 510
 511 #define LUAI_UACINT             LUA_INTEGER
 512
 513 /*
 514 ** use LUAI_UACINT here to avoid problems with promotions (which
 515 ** can turn a comparison between unsigneds into a signed comparison)
 516 */
 517 #define LUA_UNSIGNED            unsigned LUAI_UACINT
 518
 519
 520 /* now the variable definitions */
 521
 522 #if LUA_INT_TYPE == LUA_INT_INT         /* { int */
 523
 524 #define LUA_INTEGER             int
 525 #define LUA_INTEGER_FRMLEN      ""
 526
 527 #define LUA_MAXINTEGER          INT_MAX
 528 #define LUA_MININTEGER          INT_MIN
 529
 530 #elif LUA_INT_TYPE == LUA_INT_LONG      /* }{ long */
 531
 532 #define LUA_INTEGER             long
 533 #define LUA_INTEGER_FRMLEN      "l"
 534
 535 #define LUA_MAXINTEGER          LONG_MAX
 536 #define LUA_MININTEGER          LONG_MIN
 537
 538 #elif LUA_INT_TYPE == LUA_INT_LONGLONG  /* }{ long long */
 539
 540 #if defined(LLONG_MAX)          /* { */
 541 /* use ISO C99 stuff */
 542
 543 #define LUA_INTEGER             long long
 544 #define LUA_INTEGER_FRMLEN      "ll"
 545
 546 #define LUA_MAXINTEGER          LLONG_MAX
 547 #define LUA_MININTEGER          LLONG_MIN
 548
 549 #elif defined(LUA_USE_WINDOWS) /* }{ */
 550 /* in Windows, can use specific Windows types */
 551
 552 #define LUA_INTEGER             __int64
 553 #define LUA_INTEGER_FRMLEN      "I64"
 554
 555 #define LUA_MAXINTEGER          _I64_MAX
 556 #define LUA_MININTEGER          _I64_MIN
 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 @@ lua_strx2number converts an hexadecimal numeric string to a number.
 582 ** In C99, 'strtod' does that conversion. Otherwise, you can
 583 ** leave 'lua_strx2number' undefined and Lua will provide its own
 584 ** implementation.
 585 */
 586 #if !defined(LUA_USE_C89)
 587 #define lua_strx2number(s,p)    lua_str2number(s,p)
 588 #endif
 589
 590
 591 /*
 592 @@ lua_number2strx converts a float to an hexadecimal numeric string.
 593 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
 594 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
 595 ** provide its own implementation.
 596 */
 597 #if !defined(LUA_USE_C89)
 598 #define lua_number2strx(L,b,f,n)        sprintf(b,f,n)
 599 #endif
 600
 601
 602 /*
 603 ** 'strtof' and 'opf' variants for math functions are not valid in
 604 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
 605 ** availability of these variants. ('math.h' is already included in
 606 ** all files that use these macros.)
 607 */
 608 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
 609 #undef l_mathop  /* variants not available */
 610 #undef lua_str2number
 611 #define l_mathop(op)            (lua_Number)op  /* no variant */
 612 #define lua_str2number(s,p)     ((lua_Number)strtod((s), (p)))
 613 #endif
 614
 615
 616 /*
 617 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
 618 ** functions.  It must be a numerical type; Lua will use 'intptr_t' if
 619 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
 620 ** 'intptr_t' in C89)
 621 */
 622 #define LUA_KCONTEXT    ptrdiff_t
 623
 624 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
 625     __STDC_VERSION__ >= 199901L
 626 #include <stdint.h>
 627 #if defined(INTPTR_MAX)  /* even in C99 this type is optional */
 628 #undef LUA_KCONTEXT
 629 #define LUA_KCONTEXT    intptr_t
 630 #endif
 631 #endif
 632
 633
 634 /*
 635 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
 636 ** Change that if you do not want to use C locales. (Code using this
 637 ** macro must include header 'locale.h'.)
 638 */
 639 #if !defined(lua_getlocaledecpoint)
 640 #define lua_getlocaledecpoint()         (localeconv()->decimal_point[0])
 641 #endif
 642
 643 /* }================================================================== */
 644
 645
 646 /*
 647 ** {==================================================================
 648 ** Language Variations
 649 ** =====================================================================
 650 */
 651
 652 /*
 653 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
 654 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
 655 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
 656 ** coercion from strings to numbers.
 657 */
 658 /* #define LUA_NOCVTN2S */
 659 /* #define LUA_NOCVTS2N */
 660
 661
 662 /*
 663 @@ LUA_USE_APICHECK turns on several consistency checks on the C API.
 664 ** Define it as a help when debugging C code.
 665 */
 666 #if defined(LUA_USE_APICHECK)
 667 #include <assert.h>
 668 #define luai_apicheck(l,e)      assert(e)
 669 #endif
 670
 671 /* }================================================================== */
 672
 673
 674 /*
 675 ** {==================================================================
 676 ** Macros that affect the API and must be stable (that is, must be the
 677 ** same when you compile Lua and when you compile code that links to
 678 ** Lua). You probably do not want/need to change them.
 679 ** =====================================================================
 680 */
 681
 682 /*
 683 @@ LUAI_MAXSTACK limits the size of the Lua stack.
 684 ** CHANGE it if you need a different limit. This limit is arbitrary;
 685 ** its only purpose is to stop Lua from consuming unlimited stack
 686 ** space (and to reserve some numbers for pseudo-indices).
 687 */
 688 #if LUAI_BITSINT >= 32
 689 #define LUAI_MAXSTACK           1000000
 690 #else
 691 #define LUAI_MAXSTACK           15000
 692 #endif
 693
 694
 695 /*
 696 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with
 697 ** a Lua state with very fast access.
 698 ** CHANGE it if you need a different size.
 699 */
 700 #define LUA_EXTRASPACE          (sizeof(void *))
 701
 702
 703 /*
 704 @@ LUA_IDSIZE gives the maximum size for the description of the source
 705 @@ of a function in debug information.
 706 ** CHANGE it if you want a different size.
 707 */
 708 #define LUA_IDSIZE      60
 709
 710
 711 /*
 712 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 713 ** CHANGE it if it uses too much C-stack space. (For long double,
 714 ** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a
 715 ** smaller buffer would force a memory allocation for each call to
 716 ** 'string.format'.)
 717 */
 718 #if defined(LUA_FLOAT_LONGDOUBLE)
 719 #define LUAL_BUFFERSIZE         8192
 720 #else
 721 #define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
 722 #endif
 723
 724 /* }================================================================== */
 725
 726
 727 /*
 728 @@ LUA_QL describes how error messages quote program elements.
 729 ** Lua does not use these macros anymore; they are here for
 730 ** compatibility only.
 731 */
 732 #define LUA_QL(x)       "'" x "'"
 733 #define LUA_QS          LUA_QL("%s")
 734
 735
 736
 737
 738 /* =================================================================== */
 739
 740 /*
 741 ** Local configuration. You can use this space to add your redefinitions
 742 ** without modifying the main part of the file.
 743 */
 744
 745
 746
 747
 748
 749 #endif
 750