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#define LUA_FLOAT_INT64 4 124 125#if defined(LUA_32BITS) /* { */ 126/* 127** 32-bit integers and 'float' 128*/ 129#if LUAI_IS32INT /* use 'int' if big enough */ 130#define LUA_INT_TYPE LUA_INT_INT 131#else /* otherwise use 'long' */ 132#define LUA_INT_TYPE LUA_INT_LONG 133#endif 134#define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT 135 136#elif defined(LUA_C89_NUMBERS) /* }{ */ 137/* 138** largest types available for C89 ('long' and 'double') 139*/ 140#define LUA_INT_TYPE LUA_INT_LONG 141#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 142 143#endif /* } */ 144 145 146/* 147** default configuration for 64-bit Lua ('long long' and 'double') 148*/ 149#if !defined(LUA_INT_TYPE) 150#define LUA_INT_TYPE LUA_INT_LONGLONG 151#endif 152 153#if !defined(LUA_FLOAT_TYPE) 154#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 155#endif 156 157/* }================================================================== */ 158 159 160 161/* 162** {================================================================== 163** Configuration for Paths. 164** =================================================================== 165*/ 166 167/* 168** LUA_PATH_SEP is the character that separates templates in a path. 169** LUA_PATH_MARK is the string that marks the substitution points in a 170** template. 171** LUA_EXEC_DIR in a Windows path is replaced by the executable's 172** directory. 173*/ 174#define LUA_PATH_SEP ";" 175#define LUA_PATH_MARK "?" 176#define LUA_EXEC_DIR "!" 177 178 179/* 180@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 181** Lua libraries. 182@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 183** C libraries. 184** CHANGE them if your machine has a non-conventional directory 185** hierarchy or if you want to install your libraries in 186** non-conventional directories. 187*/ 188 189#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR 190#if defined(_WIN32) /* { */ 191/* 192** In Windows, any exclamation mark ('!') in the path is replaced by the 193** path of the directory of the executable file of the current process. 194*/ 195#define LUA_LDIR "!\\lua\\" 196#define LUA_CDIR "!\\" 197#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" 198 199#if !defined(LUA_PATH_DEFAULT) 200#define LUA_PATH_DEFAULT \ 201 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 202 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ 203 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ 204 ".\\?.lua;" ".\\?\\init.lua" 205#endif 206 207#if !defined(LUA_CPATH_DEFAULT) 208#define LUA_CPATH_DEFAULT \ 209 LUA_CDIR"?.dll;" \ 210 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ 211 LUA_CDIR"loadall.dll;" ".\\?.dll" 212#endif 213 214#else /* }{ */ 215 216#define LUA_ROOT "/usr/local/" 217#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/" 218#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/" 219 220#if !defined(LUA_PATH_DEFAULT) 221#define LUA_PATH_DEFAULT \ 222 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 223 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ 224 "./?.lua;" "./?/init.lua" 225#endif 226 227#if !defined(LUA_CPATH_DEFAULT) 228#define LUA_CPATH_DEFAULT \ 229 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 230#endif 231 232#endif /* } */ 233 234 235/* 236@@ LUA_DIRSEP is the directory separator (for submodules). 237** CHANGE it if your machine does not use "/" as the directory separator 238** and is not Windows. (On Windows Lua automatically uses "\".) 239*/ 240#if !defined(LUA_DIRSEP) 241 242#if defined(_WIN32) 243#define LUA_DIRSEP "\\" 244#else 245#define LUA_DIRSEP "/" 246#endif 247 248#endif 249 250/* }================================================================== */ 251 252 253/* 254** {================================================================== 255** Marks for exported symbols in the C code 256** =================================================================== 257*/ 258 259/* 260@@ LUA_API is a mark for all core API functions. 261@@ LUALIB_API is a mark for all auxiliary library functions. 262@@ LUAMOD_API is a mark for all standard library opening functions. 263** CHANGE them if you need to define those functions in some special way. 264** For instance, if you want to create one Windows DLL with the core and 265** the libraries, you may want to use the following definition (define 266** LUA_BUILD_AS_DLL to get it). 267*/ 268#if defined(LUA_BUILD_AS_DLL) /* { */ 269 270#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 271#define LUA_API __declspec(dllexport) 272#else /* }{ */ 273#define LUA_API __declspec(dllimport) 274#endif /* } */ 275 276#else /* }{ */ 277 278#define LUA_API extern 279 280#endif /* } */ 281 282 283/* 284** More often than not the libs go together with the core. 285*/ 286#define LUALIB_API LUA_API 287#define LUAMOD_API LUA_API 288 289 290/* 291@@ LUAI_FUNC is a mark for all extern functions that are not to be 292** exported to outside modules. 293@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables, 294** none of which to be exported to outside modules (LUAI_DDEF for 295** definitions and LUAI_DDEC for declarations). 296** CHANGE them if you need to mark them in some special way. Elf/gcc 297** (versions 3.2 and later) mark them as "hidden" to optimize access 298** when Lua is compiled as a shared library. Not all elf targets support 299** this attribute. Unfortunately, gcc does not offer a way to check 300** whether the target offers that support, and those without support 301** give a warning about it. To avoid these warnings, change to the 302** default definition. 303*/ 304#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 305 defined(__ELF__) /* { */ 306#define LUAI_FUNC __attribute__((visibility("internal"))) extern 307#else /* }{ */ 308#define LUAI_FUNC extern 309#endif /* } */ 310 311#define LUAI_DDEC(dec) LUAI_FUNC dec 312#define LUAI_DDEF /* empty */ 313 314/* }================================================================== */ 315 316 317/* 318** {================================================================== 319** Compatibility with previous versions 320** =================================================================== 321*/ 322 323/* 324@@ LUA_COMPAT_5_3 controls other macros for compatibility with Lua 5.3. 325** You can define it to get all options, or change specific options 326** to fit your specific needs. 327*/ 328#if defined(LUA_COMPAT_5_3) /* { */ 329 330/* 331@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated 332** functions in the mathematical library. 333** (These functions were already officially removed in 5.3; 334** nevertheless they are still available here.) 335*/ 336#define LUA_COMPAT_MATHLIB 337 338/* 339@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for 340** manipulating other integer types (lua_pushunsigned, lua_tounsigned, 341** luaL_checkint, luaL_checklong, etc.) 342** (These macros were also officially removed in 5.3, but they are still 343** available here.) 344*/ 345#define LUA_COMPAT_APIINTCASTS 346 347 348/* 349@@ LUA_COMPAT_LT_LE controls the emulation of the '__le' metamethod 350** using '__lt'. 351*/ 352#define LUA_COMPAT_LT_LE 353 354 355/* 356@@ The following macros supply trivial compatibility for some 357** changes in the API. The macros themselves document how to 358** change your code to avoid using them. 359** (Once more, these macros were officially removed in 5.3, but they are 360** still available here.) 361*/ 362#define lua_strlen(L,i) lua_rawlen(L, (i)) 363 364#define lua_objlen(L,i) lua_rawlen(L, (i)) 365 366#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 367#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 368 369#endif /* } */ 370 371/* }================================================================== */ 372 373 374 375/* 376** {================================================================== 377** Configuration for Numbers. 378** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* 379** satisfy your needs. 380** =================================================================== 381*/ 382 383/* 384@@ LUA_NUMBER is the floating-point type used by Lua. 385@@ LUAI_UACNUMBER is the result of a 'default argument promotion' 386@@ over a floating number. 387@@ l_floatatt(x) corrects float attribute 'x' to the proper float type 388** by prefixing it with one of FLT/DBL/LDBL. 389@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. 390@@ LUA_NUMBER_FMT is the format for writing floats. 391@@ lua_number2str converts a float to a string. 392@@ l_mathop allows the addition of an 'l' or 'f' to all math operations. 393@@ l_floor takes the floor of a float. 394@@ lua_str2number converts a decimal numeral to a number. 395*/ 396 397 398/* The following definitions are good for most cases here */ 399 400#define l_floor(x) (l_mathop(floor)(x)) 401 402#define lua_number2str(s,sz,n) \ 403 l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) 404 405/* 406@@ lua_numbertointeger converts a float number with an integral value 407** to an integer, or returns 0 if float is not within the range of 408** a lua_Integer. (The range comparisons are tricky because of 409** rounding. The tests here assume a two-complement representation, 410** where MININTEGER always has an exact representation as a float; 411** MAXINTEGER may not have one, and therefore its conversion to float 412** may have an ill-defined value.) 413*/ 414#define lua_numbertointeger(n,p) \ 415 ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \ 416 (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \ 417 (*(p) = (LUA_INTEGER)(n), 1)) 418 419 420/* now the variable definitions */ 421 422#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ 423 424#define LUA_NUMBER float 425 426#define l_floatatt(n) (FLT_##n) 427 428#define LUAI_UACNUMBER double 429 430#define LUA_NUMBER_FRMLEN "" 431#define LUA_NUMBER_FMT "%.7g" 432 433#define l_mathop(op) op##f 434 435#define lua_str2number(s,p) strtof((s), (p)) 436 437 438#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ 439 440#define LUA_NUMBER long double 441 442#define l_floatatt(n) (LDBL_##n) 443 444#define LUAI_UACNUMBER long double 445 446#define LUA_NUMBER_FRMLEN "L" 447#define LUA_NUMBER_FMT "%.19Lg" 448 449#define l_mathop(op) op##l 450 451#define lua_str2number(s,p) strtold((s), (p)) 452 453#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ 454 455#define LUA_NUMBER double 456 457#define l_floatatt(n) (DBL_##n) 458 459#define LUAI_UACNUMBER double 460 461#define LUA_NUMBER_FRMLEN "" 462#define LUA_NUMBER_FMT "%.14g" 463 464#define l_mathop(op) op 465 466#define lua_str2number(s,p) strtod((s), (p)) 467 468#else /* }{ */ 469 470#error "numeric float type not defined" 471 472#endif /* } */ 473 474 475 476/* 477@@ LUA_INTEGER is the integer type used by Lua. 478** 479@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. 480** 481@@ LUAI_UACINT is the result of a 'default argument promotion' 482@@ over a LUA_INTEGER. 483@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. 484@@ LUA_INTEGER_FMT is the format for writing integers. 485@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. 486@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. 487@@ LUA_MAXUNSIGNED is the maximum value for a LUA_UNSIGNED. 488@@ LUA_UNSIGNEDBITS is the number of bits in a LUA_UNSIGNED. 489@@ lua_integer2str converts an integer to a string. 490*/ 491 492 493/* The following definitions are good for most cases here */ 494 495#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" 496 497#define LUAI_UACINT LUA_INTEGER 498 499#define lua_integer2str(s,sz,n) \ 500 l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) 501 502/* 503** use LUAI_UACINT here to avoid problems with promotions (which 504** can turn a comparison between unsigneds into a signed comparison) 505*/ 506#define LUA_UNSIGNED unsigned LUAI_UACINT 507 508 509#define LUA_UNSIGNEDBITS (sizeof(LUA_UNSIGNED) * CHAR_BIT) 510 511 512/* now the variable definitions */ 513 514#if LUA_INT_TYPE == LUA_INT_INT /* { int */ 515 516#define LUA_INTEGER int 517#define LUA_INTEGER_FRMLEN "" 518 519#define LUA_MAXINTEGER INT_MAX 520#define LUA_MININTEGER INT_MIN 521 522#define LUA_MAXUNSIGNED UINT_MAX 523 524#elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ 525 526#define LUA_INTEGER long 527#define LUA_INTEGER_FRMLEN "l" 528 529#define LUA_MAXINTEGER LONG_MAX 530#define LUA_MININTEGER LONG_MIN 531 532#define LUA_MAXUNSIGNED ULONG_MAX 533 534#elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ 535 536/* use presence of macro LLONG_MAX as proxy for C99 compliance */ 537#if defined(LLONG_MAX) /* { */ 538/* use ISO C99 stuff */ 539 540#define LUA_INTEGER long long 541#define LUA_INTEGER_FRMLEN "ll" 542 543#define LUA_MAXINTEGER LLONG_MAX 544#define LUA_MININTEGER LLONG_MIN 545 546#define LUA_MAXUNSIGNED ULLONG_MAX 547 548#elif defined(LUA_USE_WINDOWS) /* }{ */ 549/* in Windows, can use specific Windows types */ 550 551#define LUA_INTEGER __int64 552#define LUA_INTEGER_FRMLEN "I64" 553 554#define LUA_MAXINTEGER _I64_MAX 555#define LUA_MININTEGER _I64_MIN 556 557#define LUA_MAXUNSIGNED _UI64_MAX 558 559#else /* }{ */ 560 561#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ 562 or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" 563 564#endif /* } */ 565 566#else /* }{ */ 567 568#error "numeric integer type not defined" 569 570#endif /* } */ 571 572/* }================================================================== */ 573 574 575/* 576** {================================================================== 577** Dependencies with C99 and other C details 578** =================================================================== 579*/ 580 581/* 582@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. 583** (All uses in Lua have only one format item.) 584*/ 585#if !defined(LUA_USE_C89) 586#define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) 587#else 588#define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) 589#endif 590 591 592/* 593@@ lua_strx2number converts a hexadecimal numeral to a number. 594** In C99, 'strtod' does that conversion. Otherwise, you can 595** leave 'lua_strx2number' undefined and Lua will provide its own 596** implementation. 597*/ 598#if !defined(LUA_USE_C89) 599#define lua_strx2number(s,p) lua_str2number(s,p) 600#endif 601 602 603/* 604@@ lua_pointer2str converts a pointer to a readable string in a 605** non-specified way. 606*/ 607#define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p) 608 609 610/* 611@@ lua_number2strx converts a float to a hexadecimal numeral. 612** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. 613** Otherwise, you can leave 'lua_number2strx' undefined and Lua will 614** provide its own implementation. 615*/ 616#if !defined(LUA_USE_C89) 617#define lua_number2strx(L,b,sz,f,n) \ 618 ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) 619#endif 620 621 622/* 623** 'strtof' and 'opf' variants for math functions are not valid in 624** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the 625** availability of these variants. ('math.h' is already included in 626** all files that use these macros.) 627*/ 628#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) 629#undef l_mathop /* variants not available */ 630#undef lua_str2number 631#define l_mathop(op) (lua_Number)op /* no variant */ 632#define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) 633#endif 634 635 636/* 637@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation 638** functions. It must be a numerical type; Lua will use 'intptr_t' if 639** available, otherwise it will use 'ptrdiff_t' (the nearest thing to 640** 'intptr_t' in C89) 641*/ 642#define LUA_KCONTEXT ptrdiff_t 643 644#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ 645 __STDC_VERSION__ >= 199901L 646#include <stdint.h> 647#if defined(INTPTR_MAX) /* even in C99 this type is optional */ 648#undef LUA_KCONTEXT 649#define LUA_KCONTEXT intptr_t 650#endif 651#endif 652 653 654/* 655@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). 656** Change that if you do not want to use C locales. (Code using this 657** macro must include the header 'locale.h'.) 658*/ 659#if !defined(lua_getlocaledecpoint) 660#define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) 661#endif 662 663/* }================================================================== */ 664 665 666/* 667** {================================================================== 668** Language Variations 669** ===================================================================== 670*/ 671 672/* 673@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some 674** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from 675** numbers to strings. Define LUA_NOCVTS2N to turn off automatic 676** coercion from strings to numbers. 677*/ 678/* #define LUA_NOCVTN2S */ 679/* #define LUA_NOCVTS2N */ 680 681 682/* 683@@ LUA_USE_APICHECK turns on several consistency checks on the C API. 684** Define it as a help when debugging C code. 685*/ 686#if defined(LUA_USE_APICHECK) 687#include <assert.h> 688#define luai_apicheck(l,e) assert(e) 689#endif 690 691/* }================================================================== */ 692 693 694/* 695** {================================================================== 696** Macros that affect the API and must be stable (that is, must be the 697** same when you compile Lua and when you compile code that links to 698** Lua). 699** ===================================================================== 700*/ 701 702/* 703@@ LUAI_MAXSTACK limits the size of the Lua stack. 704** CHANGE it if you need a different limit. This limit is arbitrary; 705** its only purpose is to stop Lua from consuming unlimited stack 706** space (and to reserve some numbers for pseudo-indices). 707** (It must fit into max(size_t)/32.) 708*/ 709#if LUAI_IS32INT 710#define LUAI_MAXSTACK 1000000 711#else 712#define LUAI_MAXSTACK 15000 713#endif 714 715 716/* 717@@ LUA_EXTRASPACE defines the size of a raw memory area associated with 718** a Lua state with very fast access. 719** CHANGE it if you need a different size. 720*/ 721#define LUA_EXTRASPACE (sizeof(void *)) 722 723 724/* 725@@ LUA_IDSIZE gives the maximum size for the description of the source 726@@ of a function in debug information. 727** CHANGE it if you want a different size. 728*/ 729#define LUA_IDSIZE 60 730 731 732/* 733@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 734*/ 735#define LUAL_BUFFERSIZE ((int)(16 * sizeof(void*) * sizeof(lua_Number))) 736 737 738/* 739@@ LUAI_MAXALIGN defines fields that, when used in a union, ensure 740** maximum alignment for the other items in that union. 741*/ 742#define LUAI_MAXALIGN lua_Number n; double u; void *s; lua_Integer i; long l 743 744/* }================================================================== */ 745 746 747 748 749 750/* =================================================================== */ 751 752/* 753** Local configuration. You can use this space to add your redefinitions 754** without modifying the main part of the file. 755*/ 756 757 758 759 760 761#endif 762 763