luaconf.h revision 344220
1/* $FreeBSD: stable/11/stand/liblua/luaconf.h 344220 2019-02-17 02:39:17Z kevans $ */ 2/* 3** $Id: luaconf.h,v 1.259 2016/12/22 13:08:50 roberto Exp $ 4** Configuration file for Lua 5** See Copyright Notice in lua.h 6*/ 7 8 9#ifndef luaconf_h 10#define luaconf_h 11 12#include <limits.h> 13#include <stddef.h> 14 15 16/* 17** =================================================================== 18** Search for "@@" to find all configurable definitions. 19** =================================================================== 20*/ 21 22 23/* 24** {==================================================================== 25** System Configuration: macros to adapt (if needed) Lua to some 26** particular platform, for instance compiling it with 32-bit numbers or 27** restricting it to C89. 28** ===================================================================== 29*/ 30 31/* 32@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You 33** can also define LUA_32BITS in the make file, but changing here you 34** ensure that all software connected to Lua will be compiled with the 35** same configuration. 36*/ 37/* #define LUA_32BITS */ 38 39 40/* 41@@ LUA_USE_C89 controls the use of non-ISO-C89 features. 42** Define it if you want Lua to avoid the use of a few C99 features 43** or Windows-specific features on Windows. 44*/ 45/* #define LUA_USE_C89 */ 46 47 48/* 49** By default, Lua on Windows use (some) specific Windows features 50*/ 51#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE) 52#define LUA_USE_WINDOWS /* enable goodies for regular Windows */ 53#endif 54 55 56#if defined(LUA_USE_WINDOWS) 57#define LUA_DL_DLL /* enable support for DLL */ 58#define LUA_USE_C89 /* broadly, Windows is C89 */ 59#endif 60 61 62#if defined(LUA_USE_LINUX) 63#define LUA_USE_POSIX 64#define LUA_USE_DLOPEN /* needs an extra library: -ldl */ 65#define LUA_USE_READLINE /* needs some extra libraries */ 66#endif 67 68 69#if defined(LUA_USE_MACOSX) 70#define LUA_USE_POSIX 71#define LUA_USE_DLOPEN /* MacOS does not need -ldl */ 72#define LUA_USE_READLINE /* needs an extra library: -lreadline */ 73#endif 74 75 76/* 77@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for 78** C89 ('long' and 'double'); Windows always has '__int64', so it does 79** not need to use this case. 80*/ 81#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS) 82#define LUA_C89_NUMBERS 83#endif 84 85 86 87/* 88@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'. 89*/ 90/* avoid undefined shifts */ 91#if ((INT_MAX >> 15) >> 15) >= 1 92#define LUAI_BITSINT 32 93#else 94/* 'int' always must have at least 16 bits */ 95#define LUAI_BITSINT 16 96#endif 97 98 99/* 100@@ LUA_INT_TYPE defines the type for Lua integers. 101@@ LUA_FLOAT_TYPE defines the type for Lua floats. 102** Lua should work fine with any mix of these options (if supported 103** by your C compiler). The usual configurations are 64-bit integers 104** and 'double' (the default), 32-bit integers and 'float' (for 105** restricted platforms), and 'long'/'double' (for C compilers not 106** compliant with C99, which may not have support for 'long long'). 107*/ 108 109/* predefined options for LUA_INT_TYPE */ 110#define LUA_INT_INT 1 111#define LUA_INT_LONG 2 112#define LUA_INT_LONGLONG 3 113 114/* predefined options for LUA_FLOAT_TYPE */ 115#define LUA_FLOAT_FLOAT 1 116#define LUA_FLOAT_DOUBLE 2 117#define LUA_FLOAT_LONGDOUBLE 3 118#define LUA_FLOAT_INT64 4 119 120#if defined(LUA_32BITS) /* { */ 121/* 122** 32-bit integers and 'float' 123*/ 124#if LUAI_BITSINT >= 32 /* use 'int' if big enough */ 125#define LUA_INT_TYPE LUA_INT_INT 126#else /* otherwise use 'long' */ 127#define LUA_INT_TYPE LUA_INT_LONG 128#endif 129#define LUA_FLOAT_TYPE LUA_FLOAT_FLOAT 130 131#elif defined(LUA_C89_NUMBERS) /* }{ */ 132/* 133** largest types available for C89 ('long' and 'double') 134*/ 135#define LUA_INT_TYPE LUA_INT_LONG 136#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 137 138#endif /* } */ 139 140 141/* 142** default configuration for 64-bit Lua ('long long' and 'double') 143*/ 144#if !defined(LUA_INT_TYPE) 145#define LUA_INT_TYPE LUA_INT_LONGLONG 146#endif 147 148#if !defined(LUA_FLOAT_TYPE) 149#define LUA_FLOAT_TYPE LUA_FLOAT_DOUBLE 150#endif 151 152/* }================================================================== */ 153 154 155 156 157/* 158** {================================================================== 159** Configuration for Paths. 160** =================================================================== 161*/ 162 163/* 164** LUA_PATH_SEP is the character that separates templates in a path. 165** LUA_PATH_MARK is the string that marks the substitution points in a 166** template. 167** LUA_EXEC_DIR in a Windows path is replaced by the executable's 168** directory. 169*/ 170#define LUA_PATH_SEP ";" 171#define LUA_PATH_MARK "?" 172#define LUA_EXEC_DIR "!" 173 174 175/* 176@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for 177** Lua libraries. 178@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for 179** C libraries. 180** CHANGE them if your machine has a non-conventional directory 181** hierarchy or if you want to install your libraries in 182** non-conventional directories. 183*/ 184#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR 185#if defined(_WIN32) /* { */ 186/* 187** In Windows, any exclamation mark ('!') in the path is replaced by the 188** path of the directory of the executable file of the current process. 189*/ 190#define LUA_LDIR "!\\lua\\" 191#define LUA_CDIR "!\\" 192#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\" 193#define LUA_PATH_DEFAULT \ 194 LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \ 195 LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \ 196 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \ 197 ".\\?.lua;" ".\\?\\init.lua" 198#define LUA_CPATH_DEFAULT \ 199 LUA_CDIR"?.dll;" \ 200 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \ 201 LUA_CDIR"loadall.dll;" ".\\?.dll" 202 203#else /* }{ */ 204 205#define LUA_ROOT "/boot/lua/" LUA_VDIR "/" 206#define LUA_LDIR LUA_ROOT "share/" 207#define LUA_CDIR LUA_ROOT "lib/" 208#ifndef LUA_PATH_DEFAULT 209#define LUA_PATH_DEFAULT \ 210 LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \ 211 LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \ 212 "./?.lua;" "./?/init.lua" 213#endif 214#define LUA_CPATH_DEFAULT \ 215 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so" 216#endif /* } */ 217 218 219/* 220@@ LUA_DIRSEP is the directory separator (for submodules). 221** CHANGE it if your machine does not use "/" as the directory separator 222** and is not Windows. (On Windows Lua automatically uses "\".) 223*/ 224#if defined(_WIN32) 225#define LUA_DIRSEP "\\" 226#else 227#define LUA_DIRSEP "/" 228#endif 229 230/* }================================================================== */ 231 232 233/* 234** {================================================================== 235** Marks for exported symbols in the C code 236** =================================================================== 237*/ 238 239/* 240@@ LUA_API is a mark for all core API functions. 241@@ LUALIB_API is a mark for all auxiliary library functions. 242@@ LUAMOD_API is a mark for all standard library opening functions. 243** CHANGE them if you need to define those functions in some special way. 244** For instance, if you want to create one Windows DLL with the core and 245** the libraries, you may want to use the following definition (define 246** LUA_BUILD_AS_DLL to get it). 247*/ 248#if defined(LUA_BUILD_AS_DLL) /* { */ 249 250#if defined(LUA_CORE) || defined(LUA_LIB) /* { */ 251#define LUA_API __declspec(dllexport) 252#else /* }{ */ 253#define LUA_API __declspec(dllimport) 254#endif /* } */ 255 256#else /* }{ */ 257 258#define LUA_API extern 259 260#endif /* } */ 261 262 263/* more often than not the libs go together with the core */ 264#define LUALIB_API LUA_API 265#define LUAMOD_API LUALIB_API 266 267 268/* 269@@ LUAI_FUNC is a mark for all extern functions that are not to be 270** exported to outside modules. 271@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables 272** that are not to be exported to outside modules (LUAI_DDEF for 273** definitions and LUAI_DDEC for declarations). 274** CHANGE them if you need to mark them in some special way. Elf/gcc 275** (versions 3.2 and later) mark them as "hidden" to optimize access 276** when Lua is compiled as a shared library. Not all elf targets support 277** this attribute. Unfortunately, gcc does not offer a way to check 278** whether the target offers that support, and those without support 279** give a warning about it. To avoid these warnings, change to the 280** default definition. 281*/ 282#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \ 283 defined(__ELF__) /* { */ 284#define LUAI_FUNC __attribute__((visibility("hidden"))) extern 285#else /* }{ */ 286#define LUAI_FUNC extern 287#endif /* } */ 288 289#define LUAI_DDEC LUAI_FUNC 290#define LUAI_DDEF /* empty */ 291 292/* }================================================================== */ 293 294 295/* 296** {================================================================== 297** Compatibility with previous versions 298** =================================================================== 299*/ 300 301/* 302@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2. 303@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1. 304** You can define it to get all options, or change specific options 305** to fit your specific needs. 306*/ 307#if defined(LUA_COMPAT_5_2) /* { */ 308 309/* 310@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated 311** functions in the mathematical library. 312*/ 313#define LUA_COMPAT_MATHLIB 314 315/* 316@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'. 317*/ 318#define LUA_COMPAT_BITLIB 319 320/* 321@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod. 322*/ 323#define LUA_COMPAT_IPAIRS 324 325/* 326@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for 327** manipulating other integer types (lua_pushunsigned, lua_tounsigned, 328** luaL_checkint, luaL_checklong, etc.) 329*/ 330#define LUA_COMPAT_APIINTCASTS 331 332#endif /* } */ 333 334 335#if defined(LUA_COMPAT_5_1) /* { */ 336 337/* Incompatibilities from 5.2 -> 5.3 */ 338#define LUA_COMPAT_MATHLIB 339#define LUA_COMPAT_APIINTCASTS 340 341/* 342@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'. 343** You can replace it with 'table.unpack'. 344*/ 345#define LUA_COMPAT_UNPACK 346 347/* 348@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'. 349** You can replace it with 'package.searchers'. 350*/ 351#define LUA_COMPAT_LOADERS 352 353/* 354@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall. 355** You can call your C function directly (with light C functions). 356*/ 357#define lua_cpcall(L,f,u) \ 358 (lua_pushcfunction(L, (f)), \ 359 lua_pushlightuserdata(L,(u)), \ 360 lua_pcall(L,1,0,0)) 361 362 363/* 364@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library. 365** You can rewrite 'log10(x)' as 'log(x, 10)'. 366*/ 367#define LUA_COMPAT_LOG10 368 369/* 370@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base 371** library. You can rewrite 'loadstring(s)' as 'load(s)'. 372*/ 373#define LUA_COMPAT_LOADSTRING 374 375/* 376@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library. 377*/ 378#define LUA_COMPAT_MAXN 379 380/* 381@@ The following macros supply trivial compatibility for some 382** changes in the API. The macros themselves document how to 383** change your code to avoid using them. 384*/ 385#define lua_strlen(L,i) lua_rawlen(L, (i)) 386 387#define lua_objlen(L,i) lua_rawlen(L, (i)) 388 389#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ) 390#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT) 391 392/* 393@@ LUA_COMPAT_MODULE controls compatibility with previous 394** module functions 'module' (Lua) and 'luaL_register' (C). 395*/ 396#define LUA_COMPAT_MODULE 397 398#endif /* } */ 399 400 401/* 402@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a 403@@ a float mark ('.0'). 404** This macro is not on by default even in compatibility mode, 405** because this is not really an incompatibility. 406*/ 407/* #define LUA_COMPAT_FLOATSTRING */ 408#define LUA_COMPAT_FLOATSTRING 409 410/* }================================================================== */ 411 412 413 414/* 415** {================================================================== 416** Configuration for Numbers. 417** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_* 418** satisfy your needs. 419** =================================================================== 420*/ 421 422/* 423@@ LUA_NUMBER is the floating-point type used by Lua. 424@@ LUAI_UACNUMBER is the result of a 'default argument promotion' 425@@ over a floating number. 426@@ l_mathlim(x) corrects limit name 'x' to the proper float type 427** by prefixing it with one of FLT/DBL/LDBL. 428@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats. 429@@ LUA_NUMBER_FMT is the format for writing floats. 430@@ lua_number2str converts a float to a string. 431@@ l_mathop allows the addition of an 'l' or 'f' to all math operations. 432@@ l_floor takes the floor of a float. 433@@ lua_str2number converts a decimal numeric string to a number. 434*/ 435 436 437/* The following definitions are good for most cases here */ 438 439#define l_floor(x) (l_mathop(floor)(x)) 440 441#define lua_number2str(s,sz,n) \ 442 l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n)) 443 444/* 445@@ lua_numbertointeger converts a float number to an integer, or 446** returns 0 if float is not within the range of a lua_Integer. 447** (The range comparisons are tricky because of rounding. The tests 448** here assume a two-complement representation, where MININTEGER always 449** has an exact representation as a float; MAXINTEGER may not have one, 450** and therefore its conversion to float may have an ill-defined value.) 451*/ 452#define lua_numbertointeger(n,p) \ 453 (*(p) = (LUA_INTEGER)(n), 1) 454 455 456/* now the variable definitions */ 457 458#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT /* { single float */ 459 460#define LUA_NUMBER float 461 462#define l_mathlim(n) (FLT_##n) 463 464#define LUAI_UACNUMBER double 465 466#define LUA_NUMBER_FRMLEN "" 467#define LUA_NUMBER_FMT "%.7g" 468 469#define l_mathop(op) op##f 470 471#define lua_str2number(s,p) strtof((s), (p)) 472 473#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE /* }{ long double */ 474 475#define LUA_NUMBER long double 476 477#define l_mathlim(n) (LDBL_##n) 478 479#define LUAI_UACNUMBER long double 480 481#define LUA_NUMBER_FRMLEN "L" 482#define LUA_NUMBER_FMT "%.19Lg" 483 484#define l_mathop(op) op##l 485 486#define lua_str2number(s,p) strtold((s), (p)) 487 488#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE /* }{ double */ 489 490#define LUA_NUMBER double 491 492#define l_mathlim(n) (DBL_##n) 493 494#define LUAI_UACNUMBER double 495 496#define LUA_NUMBER_FRMLEN "" 497#define LUA_NUMBER_FMT "%.14g" 498 499#define l_mathop(op) op 500 501#define lua_str2number(s,p) strtod((s), (p)) 502 503#elif LUA_FLOAT_TYPE == LUA_FLOAT_INT64 /* }{ int64 */ 504 505#include "lstd.h" 506 507#include <machine/_inttypes.h> 508 509#define panic lua_panic 510/* Hack to use int64 as the LUA_NUMBER from ZFS code, kinda */ 511 512#define LUA_NUMBER int64_t 513 514#define l_mathlim(n) (LUA_FLOAT_INT_HACK_##n) 515#define LUA_FLOAT_INT_HACK_MANT_DIG 32 516#define LUA_FLOAT_INT_HACK_MAX_10_EXP 32 517 518#define LUAI_UACNUMBER int64_t 519 520#define LUA_NUMBER_FRMLEN "" 521#define LUA_NUMBER_FMT "%" PRId64 522 523#define l_mathop(x) (lstd_ ## x) 524 525#define lua_str2number(s,p) strtoll((s), (p), 0) 526 527#define lua_getlocaledecpoint() '.' 528 529#else /* }{ */ 530 531#error "numeric float type not defined" 532 533#endif /* } */ 534 535 536 537/* 538@@ LUA_INTEGER is the integer type used by Lua. 539** 540@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER. 541** 542@@ LUAI_UACINT is the result of a 'default argument promotion' 543@@ over a lUA_INTEGER. 544@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers. 545@@ LUA_INTEGER_FMT is the format for writing integers. 546@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER. 547@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER. 548@@ lua_integer2str converts an integer to a string. 549*/ 550 551 552/* The following definitions are good for most cases here */ 553 554#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d" 555 556#define LUAI_UACINT LUA_INTEGER 557 558#define lua_integer2str(s,sz,n) \ 559 l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n)) 560 561/* 562** use LUAI_UACINT here to avoid problems with promotions (which 563** can turn a comparison between unsigneds into a signed comparison) 564*/ 565#define LUA_UNSIGNED unsigned LUAI_UACINT 566 567 568/* now the variable definitions */ 569 570#if LUA_INT_TYPE == LUA_INT_INT /* { int */ 571 572#define LUA_INTEGER int 573#define LUA_INTEGER_FRMLEN "" 574 575#define LUA_MAXINTEGER INT_MAX 576#define LUA_MININTEGER INT_MIN 577 578#elif LUA_INT_TYPE == LUA_INT_LONG /* }{ long */ 579 580#define LUA_INTEGER long 581#define LUA_INTEGER_FRMLEN "l" 582 583#define LUA_MAXINTEGER LONG_MAX 584#define LUA_MININTEGER LONG_MIN 585 586#elif LUA_INT_TYPE == LUA_INT_LONGLONG /* }{ long long */ 587 588/* use presence of macro LLONG_MAX as proxy for C99 compliance */ 589#if defined(LLONG_MAX) /* { */ 590/* use ISO C99 stuff */ 591 592#define LUA_INTEGER long long 593#define LUA_INTEGER_FRMLEN "ll" 594 595#define LUA_MAXINTEGER LLONG_MAX 596#define LUA_MININTEGER LLONG_MIN 597 598#elif defined(LUA_USE_WINDOWS) /* }{ */ 599/* in Windows, can use specific Windows types */ 600 601#define LUA_INTEGER __int64 602#define LUA_INTEGER_FRMLEN "I64" 603 604#define LUA_MAXINTEGER _I64_MAX 605#define LUA_MININTEGER _I64_MIN 606 607#else /* }{ */ 608 609#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \ 610 or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)" 611 612#endif /* } */ 613 614#else /* }{ */ 615 616#error "numeric integer type not defined" 617 618#endif /* } */ 619 620/* }================================================================== */ 621 622 623/* 624** {================================================================== 625** Dependencies with C99 and other C details 626** =================================================================== 627*/ 628 629/* 630@@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89. 631** (All uses in Lua have only one format item.) 632*/ 633#if !defined(LUA_USE_C89) 634#define l_sprintf(s,sz,f,i) snprintf(s,sz,f,i) 635#else 636#define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s,f,i)) 637#endif 638 639 640/* 641@@ lua_strx2number converts an hexadecimal numeric string to a number. 642** In C99, 'strtod' does that conversion. Otherwise, you can 643** leave 'lua_strx2number' undefined and Lua will provide its own 644** implementation. 645*/ 646#if !defined(LUA_USE_C89) 647#define lua_strx2number(s,p) lua_str2number(s,p) 648#endif 649 650 651/* 652@@ lua_pointer2str converts a pointer to a readable string in a 653** non-specified way. 654*/ 655#define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p) 656 657 658/* 659@@ lua_number2strx converts a float to an hexadecimal numeric string. 660** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that. 661** Otherwise, you can leave 'lua_number2strx' undefined and Lua will 662** provide its own implementation. 663*/ 664#if !defined(LUA_USE_C89) 665#define lua_number2strx(L,b,sz,f,n) \ 666 ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n))) 667#endif 668 669 670/* 671** 'strtof' and 'opf' variants for math functions are not valid in 672** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the 673** availability of these variants. ('math.h' is already included in 674** all files that use these macros.) 675*/ 676#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF)) 677#undef l_mathop /* variants not available */ 678#undef lua_str2number 679#define l_mathop(op) (lua_Number)op /* no variant */ 680#define lua_str2number(s,p) ((lua_Number)strtod((s), (p))) 681#endif 682 683 684/* 685@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation 686** functions. It must be a numerical type; Lua will use 'intptr_t' if 687** available, otherwise it will use 'ptrdiff_t' (the nearest thing to 688** 'intptr_t' in C89) 689*/ 690#define LUA_KCONTEXT ptrdiff_t 691 692#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ 693 __STDC_VERSION__ >= 199901L 694#include <stdint.h> 695#if defined(INTPTR_MAX) /* even in C99 this type is optional */ 696#undef LUA_KCONTEXT 697#define LUA_KCONTEXT intptr_t 698#endif 699#endif 700 701 702/* 703@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point). 704** Change that if you do not want to use C locales. (Code using this 705** macro must include header 'locale.h'.) 706*/ 707#if !defined(lua_getlocaledecpoint) 708#define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) 709#endif 710 711/* }================================================================== */ 712 713 714/* 715** {================================================================== 716** Language Variations 717** ===================================================================== 718*/ 719 720/* 721@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some 722** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from 723** numbers to strings. Define LUA_NOCVTS2N to turn off automatic 724** coercion from strings to numbers. 725*/ 726/* #define LUA_NOCVTN2S */ 727/* #define LUA_NOCVTS2N */ 728 729 730/* 731@@ LUA_USE_APICHECK turns on several consistency checks on the C API. 732** Define it as a help when debugging C code. 733*/ 734#if defined(LUA_USE_APICHECK) 735#include <assert.h> 736#define luai_apicheck(l,e) assert(e) 737#endif 738 739/* }================================================================== */ 740 741 742/* 743** {================================================================== 744** Macros that affect the API and must be stable (that is, must be the 745** same when you compile Lua and when you compile code that links to 746** Lua). You probably do not want/need to change them. 747** ===================================================================== 748*/ 749 750/* 751@@ LUAI_MAXSTACK limits the size of the Lua stack. 752** CHANGE it if you need a different limit. This limit is arbitrary; 753** its only purpose is to stop Lua from consuming unlimited stack 754** space (and to reserve some numbers for pseudo-indices). 755*/ 756#if LUAI_BITSINT >= 32 757#define LUAI_MAXSTACK 1000000 758#else 759#define LUAI_MAXSTACK 15000 760#endif 761 762 763/* 764@@ LUA_EXTRASPACE defines the size of a raw memory area associated with 765** a Lua state with very fast access. 766** CHANGE it if you need a different size. 767*/ 768#define LUA_EXTRASPACE (sizeof(void *)) 769 770 771/* 772@@ LUA_IDSIZE gives the maximum size for the description of the source 773@@ of a function in debug information. 774** CHANGE it if you want a different size. 775*/ 776#define LUA_IDSIZE 60 777 778 779/* 780@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. 781** CHANGE it if it uses too much C-stack space. (For long double, 782** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a 783** smaller buffer would force a memory allocation for each call to 784** 'string.format'.) 785*/ 786#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE 787#define LUAL_BUFFERSIZE 8192 788#else 789#define LUAL_BUFFERSIZE ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer))) 790#endif 791 792/* }================================================================== */ 793 794 795/* 796@@ LUA_QL describes how error messages quote program elements. 797** Lua does not use these macros anymore; they are here for 798** compatibility only. 799*/ 800#define LUA_QL(x) "'" x "'" 801#define LUA_QS LUA_QL("%s") 802 803 804 805 806/* =================================================================== */ 807 808/* 809** Local configuration. You can use this space to add your redefinitions 810** without modifying the main part of the file. 811*/ 812 813 814 815 816 817#endif 818