1 /* $FreeBSD$ */ 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 LUA_PATH "/" 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 #define LUAL_BUFFERSIZE 128 787 788 /* }================================================================== */ 789 790 791 /* 792 @@ LUA_QL describes how error messages quote program elements. 793 ** Lua does not use these macros anymore; they are here for 794 ** compatibility only. 795 */ 796 #define LUA_QL(x) "'" x "'" 797 #define LUA_QS LUA_QL("%s") 798 799 800 801 802 /* =================================================================== */ 803 804 /* 805 ** Local configuration. You can use this space to add your redefinitions 806 ** without modifying the main part of the file. 807 */ 808 809 810 811 812 813 #endif 814