lua/include/luaconf.h

   1 /*
   2 ** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 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 #include "luat_conf_bsp.h"
  15 #include "luat_conf_default.h"
  16
  17 /*
  18 ** ===================================================================
  19 ** Search for "@@" to find all configurable definitions.
  20 ** ===================================================================
  21 */
  22
  23
  24 /*
  25 ** {====================================================================
  26 ** System Configuration: macros to adapt (if needed) Lua to some
  27 ** particular platform, for instance compiling it with 32-bit numbers or
  28 ** restricting it to C89.
  29 ** =====================================================================
  30 */
  31
  32 /*
  33 @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
  34 ** can also define LUA_32BITS in the make file, but changing here you
  35 ** ensure that all software connected to Lua will be compiled with the
  36 ** same configuration.
  37 */
  38 /* #define LUA_32BITS */
  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 #ifndef LUA_USE_WINDOWS
  56 #ifdef LUAT_FORCE_WIN32
  57 #define LUA_USE_WINDOWS
  58 #endif
  59 #endif
  60
  61
  62 #if defined(LUA_USE_WINDOWS)
  63 #define LUA_DL_DLL      /* enable support for DLL */
  64 #define LUA_USE_C89     /* broadly, Windows is C89 */
  65 #endif
  66
  67
  68 #if defined(LUA_USE_LINUX)
  69 #define LUA_USE_POSIX
  70 #define LUA_USE_DLOPEN          /* needs an extra library: -ldl */
  71 #define LUA_USE_READLINE        /* needs some extra libraries */
  72 #endif
  73
  74
  75 #if defined(LUA_USE_MACOSX)
  76 #define LUA_USE_POSIX
  77 #define LUA_USE_DLOPEN          /* MacOS does not need -ldl */
  78 #define LUA_USE_READLINE        /* needs an extra library: -lreadline */
  79 #endif
  80
  81
  82 /*
  83 @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
  84 ** C89 ('long' and 'double'); Windows always has '__int64', so it does
  85 ** not need to use this case.
  86 */
  87 #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
  88 #define LUA_C89_NUMBERS
  89 #endif
  90
  91
  92
  93 /*
  94 @@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
  95 */
  96 /* avoid undefined shifts */
  97 #if ((INT_MAX >> 15) >> 15) >= 1
  98 #define LUAI_BITSINT    32
  99 #else
 100 /* 'int' always must have at least 16 bits */
 101 #define LUAI_BITSINT    16
 102 #endif
 103
 104
 105 /*
 106 @@ LUA_INT_TYPE defines the type for Lua integers.
 107 @@ LUA_FLOAT_TYPE defines the type for Lua floats.
 108 ** Lua should work fine with any mix of these options (if supported
 109 ** by your C compiler). The usual configurations are 64-bit integers
 110 ** and 'double' (the default), 32-bit integers and 'float' (for
 111 ** restricted platforms), and 'long'/'double' (for C compilers not
 112 ** compliant with C99, which may not have support for 'long long').
 113 */
 114
 115 /* predefined options for LUA_INT_TYPE */
 116 #define LUA_INT_INT             1
 117 #define LUA_INT_LONG            2
 118 #define LUA_INT_LONGLONG        3
 119
 120 /* predefined options for LUA_FLOAT_TYPE */
 121 #define LUA_FLOAT_FLOAT         1
 122 #define LUA_FLOAT_DOUBLE        2
 123 #define LUA_FLOAT_LONGDOUBLE    3
 124
 125 #if defined(LUA_32BITS)         /* { */
 126 /*
 127 ** 32-bit integers and 'float'
 128 */
 129 #if LUAI_BITSINT >= 32  /* 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 ** {==================================================================
 164 ** Configuration for Paths.
 165 ** ===================================================================
 166 */
 167
 168 /*
 169 ** LUA_PATH_SEP is the character that separates templates in a path.
 170 ** LUA_PATH_MARK is the string that marks the substitution points in a
 171 ** template.
 172 ** LUA_EXEC_DIR in a Windows path is replaced by the executable's
 173 ** directory.
 174 */
 175 #define LUA_PATH_SEP            ";"
 176 #define LUA_PATH_MARK           "?"
 177 #define LUA_EXEC_DIR            "!"
 178
 179
 180 /*
 181 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
 182 ** Lua libraries.
 183 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
 184 ** C libraries.
 185 ** CHANGE them if your machine has a non-conventional directory
 186 ** hierarchy or if you want to install your libraries in
 187 ** non-conventional directories.
 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 #define LUA_PATH_DEFAULT  \
 199                 LUA_LDIR"?.lua;"
 200 #define LUA_CPATH_DEFAULT \
 201                 LUA_CDIR"?.mo;"
 202
 203 #else                   /* }{ */
 204
 205 #define LUA_ROOT        "/usr/local/"
 206 #define LUA_LDIR        LUA_ROOT "share/lua/" LUA_VDIR "/"
 207 #define LUA_CDIR        LUA_ROOT "lib/lua/" LUA_VDIR "/"
 208 #define LUA_PATH_DEFAULT  "/?.lua;"
 209 #define LUA_CPATH_DEFAULT "/?.mo;"
 210 #endif                  /* } */
 211
 212
 213 /*
 214 @@ LUA_DIRSEP is the directory separator (for submodules).
 215 ** CHANGE it if your machine does not use "/" as the directory separator
 216 ** and is not Windows. (On Windows Lua automatically uses "\".)
 217 */
 218 #if defined(_WIN32)
 219 #define LUA_DIRSEP      "\\"
 220 #else
 221 #define LUA_DIRSEP      "/"
 222 #endif
 223
 224 /* }================================================================== */
 225
 226
 227 /*
 228 ** {==================================================================
 229 ** Marks for exported symbols in the C code
 230 ** ===================================================================
 231 */
 232
 233 /*
 234 @@ LUA_API is a mark for all core API functions.
 235 @@ LUALIB_API is a mark for all auxiliary library functions.
 236 @@ LUAMOD_API is a mark for all standard library opening functions.
 237 ** CHANGE them if you need to define those functions in some special way.
 238 ** For instance, if you want to create one Windows DLL with the core and
 239 ** the libraries, you may want to use the following definition (define
 240 ** LUA_BUILD_AS_DLL to get it).
 241 */
 242 #if defined(LUA_BUILD_AS_DLL)   /* { */
 243
 244 #if defined(LUA_CORE) || defined(LUA_LIB)       /* { */
 245 #define LUA_API __declspec(dllexport)
 246 #else                                           /* }{ */
 247 #define LUA_API __declspec(dllimport)
 248 #endif                                          /* } */
 249
 250 #else                           /* }{ */
 251
 252 #define LUA_API         extern
 253
 254 #endif                          /* } */
 255
 256
 257 /* more often than not the libs go together with the core */
 258 #define LUALIB_API      LUA_API
 259 #define LUAMOD_API      LUALIB_API
 260
 261
 262 /*
 263 @@ LUAI_FUNC is a mark for all extern functions that are not to be
 264 ** exported to outside modules.
 265 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
 266 ** that are not to be exported to outside modules (LUAI_DDEF for
 267 ** definitions and LUAI_DDEC for declarations).
 268 ** CHANGE them if you need to mark them in some special way. Elf/gcc
 269 ** (versions 3.2 and later) mark them as "hidden" to optimize access
 270 ** when Lua is compiled as a shared library. Not all elf targets support
 271 ** this attribute. Unfortunately, gcc does not offer a way to check
 272 ** whether the target offers that support, and those without support
 273 ** give a warning about it. To avoid these warnings, change to the
 274 ** default definition.
 275 */
 276 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
 277     defined(__ELF__)            /* { */
 278 #define LUAI_FUNC       __attribute__((visibility("hidden"))) extern
 279 #else                           /* }{ */
 280 #define LUAI_FUNC       extern
 281 #endif                          /* } */
 282
 283 #define LUAI_DDEC       LUAI_FUNC
 284 #define LUAI_DDEF       /* empty */
 285
 286 /* }================================================================== */
 287
 288
 289 /*
 290 ** {==================================================================
 291 ** Compatibility with previous versions
 292 ** ===================================================================
 293 */
 294
 295 /*
 296 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
 297 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
 298 ** You can define it to get all options, or change specific options
 299 ** to fit your specific needs.
 300 */
 301 #define LUA_COMPAT_5_1
 302 #define LUA_COMPAT_5_2
 303
 304 #if defined(LUA_COMPAT_5_2)     /* { */
 305
 306 /*
 307 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
 308 ** functions in the mathematical library.
 309 */
 310 #define LUA_COMPAT_MATHLIB
 311
 312 /*
 313 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
 314 */
 315 #define LUA_COMPAT_BITLIB
 316
 317 /*
 318 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
 319 */
 320 #define LUA_COMPAT_IPAIRS
 321
 322 /*
 323 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
 324 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
 325 ** luaL_checkint, luaL_checklong, etc.)
 326 */
 327 #define LUA_COMPAT_APIINTCASTS
 328
 329 #endif                          /* } */
 330
 331
 332 #if defined(LUA_COMPAT_5_1)     /* { */
 333
 334 /* Incompatibilities from 5.2 -> 5.3 */
 335 #define LUA_COMPAT_MATHLIB
 336 #define LUA_COMPAT_APIINTCASTS
 337
 338 /*
 339 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
 340 ** You can replace it with 'table.unpack'.
 341 */
 342 #define LUA_COMPAT_UNPACK
 343
 344 /*
 345 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
 346 ** You can replace it with 'package.searchers'.
 347 */
 348 #define LUA_COMPAT_LOADERS
 349
 350 /*
 351 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
 352 ** You can call your C function directly (with light C functions).
 353 */
 354 #define lua_cpcall(L,f,u)  \
 355         (lua_pushcfunction(L, (f)), \
 356          lua_pushlightuserdata(L,(u)), \
 357          lua_pcall(L,1,0,0))
 358
 359
 360 /*
 361 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
 362 ** You can rewrite 'log10(x)' as 'log(x, 10)'.
 363 */
 364 #define LUA_COMPAT_LOG10
 365
 366 /*
 367 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
 368 ** library. You can rewrite 'loadstring(s)' as 'load(s)'.
 369 */
 370 #define LUA_COMPAT_LOADSTRING
 371
 372 /*
 373 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
 374 */
 375 #define LUA_COMPAT_MAXN
 376
 377 /*
 378 @@ The following macros supply trivial compatibility for some
 379 ** changes in the API. The macros themselves document how to
 380 ** change your code to avoid using them.
 381 */
 382 #define lua_strlen(L,i)         lua_rawlen(L, (i))
 383
 384 #define lua_objlen(L,i)         lua_rawlen(L, (i))
 385
 386 #define lua_equal(L,idx1,idx2)          lua_compare(L,(idx1),(idx2),LUA_OPEQ)
 387 #define lua_lessthan(L,idx1,idx2)       lua_compare(L,(idx1),(idx2),LUA_OPLT)
 388
 389 /*
 390 @@ LUA_COMPAT_MODULE controls compatibility with previous
 391 ** module functions 'module' (Lua) and 'luaL_register' (C).
 392 */
 393 #define LUA_COMPAT_MODULE
 394
 395 #endif                          /* } */
 396
 397
 398 /*
 399 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
 400 @@ a float mark ('.0').
 401 ** This macro is not on by default even in compatibility mode,
 402 ** because this is not really an incompatibility.
 403 */
 404 /* #define LUA_COMPAT_FLOATSTRING */
 405
 406 /* }================================================================== */
 407
 408
 409
 410 /*
 411 ** {==================================================================
 412 ** Configuration for Numbers.
 413 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
 414 ** satisfy your needs.
 415 ** ===================================================================
 416 */
 417
 418 /*
 419 @@ LUA_NUMBER is the floating-point type used by Lua.
 420 @@ LUAI_UACNUMBER is the result of a 'default argument promotion'
 421 @@ over a floating number.
 422 @@ l_mathlim(x) corrects limit name 'x' to the proper float type
 423 ** by prefixing it with one of FLT/DBL/LDBL.
 424 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
 425 @@ LUA_NUMBER_FMT is the format for writing floats.
 426 @@ lua_number2str converts a float to a string.
 427 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
 428 @@ l_floor takes the floor of a float.
 429 @@ lua_str2number converts a decimal numeric string to a number.
 430 */
 431
 432
 433 /* The following definitions are good for most cases here */
 434
 435 #define l_floor(x)              (l_mathop(floor)(x))
 436
 437 #define lua_number2str(s,sz,n)  \
 438         l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
 439
 440 /*
 441 @@ lua_numbertointeger converts a float number to an integer, or
 442 ** returns 0 if float is not within the range of a lua_Integer.
 443 ** (The range comparisons are tricky because of rounding. The tests
 444 ** here assume a two-complement representation, where MININTEGER always
 445 ** has an exact representation as a float; MAXINTEGER may not have one,
 446 ** and therefore its conversion to float may have an ill-defined value.)
 447 */
 448 #define lua_numbertointeger(n,p) \
 449   ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
 450    (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
 451       (*(p) = (LUA_INTEGER)(n), 1))
 452
 453
 454 /* now the variable definitions */
 455
 456 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT           /* { single float */
 457
 458 #define LUA_NUMBER      float
 459
 460 #define l_mathlim(n)            (FLT_##n)
 461
 462 #define LUAI_UACNUMBER  double
 463
 464 #define LUA_NUMBER_FRMLEN       ""
 465 #define LUA_NUMBER_FMT          "%.7g"
 466
 467 #define l_mathop(op)            op##f
 468
 469 #define lua_str2number(s,p)     strtof((s), (p))
 470
 471
 472 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE    /* }{ long double */
 473
 474 #define LUA_NUMBER      long double
 475
 476 #define l_mathlim(n)            (LDBL_##n)
 477
 478 #define LUAI_UACNUMBER  long double
 479
 480 #define LUA_NUMBER_FRMLEN       "L"
 481 #define LUA_NUMBER_FMT          "%.19Lg"
 482
 483 #define l_mathop(op)            op##l
 484
 485 #define lua_str2number(s,p)     strtold((s), (p))
 486
 487 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE        /* }{ double */
 488
 489 #define LUA_NUMBER      double
 490
 491 #define l_mathlim(n)            (DBL_##n)
 492
 493 #define LUAI_UACNUMBER  double
 494
 495 #define LUA_NUMBER_FRMLEN       ""
 496 #define LUA_NUMBER_FMT          "%.14g"
 497
 498 #define l_mathop(op)            op
 499
 500 #define lua_str2number(s,p)     strtod((s), (p))
 501
 502 #else                                           /* }{ */
 503
 504 #error "numeric float type not defined"
 505
 506 #endif                                  /* } */
 507
 508
 509
 510 /*
 511 @@ LUA_INTEGER is the integer type used by Lua.
 512 **
 513 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
 514 **
 515 @@ LUAI_UACINT is the result of a 'default argument promotion'
 516 @@ over a lUA_INTEGER.
 517 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
 518 @@ LUA_INTEGER_FMT is the format for writing integers.
 519 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
 520 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
 521 @@ lua_integer2str converts an integer to a string.
 522 */
 523
 524
 525 /* The following definitions are good for most cases here */
 526
 527 #define LUA_INTEGER_FMT         "%" LUA_INTEGER_FRMLEN "d"
 528
 529 #define LUAI_UACINT             LUA_INTEGER
 530
 531 #define lua_integer2str(s,sz,n)  \
 532         l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
 533
 534 /*
 535 ** use LUAI_UACINT here to avoid problems with promotions (which
 536 ** can turn a comparison between unsigneds into a signed comparison)
 537 */
 538 #define LUA_UNSIGNED            unsigned LUAI_UACINT
 539
 540
 541 /* now the variable definitions */
 542
 543 #if LUA_INT_TYPE == LUA_INT_INT         /* { int */
 544
 545 #define LUA_INTEGER             int
 546 #define LUA_INTEGER_FRMLEN      ""
 547
 548 #define LUA_MAXINTEGER          INT_MAX
 549 #define LUA_MININTEGER          INT_MIN
 550
 551 #elif LUA_INT_TYPE == LUA_INT_LONG      /* }{ long */
 552
 553 #define LUA_INTEGER             long
 554 #define LUA_INTEGER_FRMLEN      "l"
 555
 556 #define LUA_MAXINTEGER          LONG_MAX
 557 #define LUA_MININTEGER          LONG_MIN
 558
 559 #elif LUA_INT_TYPE == LUA_INT_LONGLONG  /* }{ long long */
 560
 561 /* use presence of macro LLONG_MAX as proxy for C99 compliance */
 562 #if defined(LLONG_MAX)          /* { */
 563 /* use ISO C99 stuff */
 564
 565 #define LUA_INTEGER             long long
 566 #define LUA_INTEGER_FRMLEN      "ll"
 567
 568 #define LUA_MAXINTEGER          LLONG_MAX
 569 #define LUA_MININTEGER          LLONG_MIN
 570
 571 #elif defined(LUA_USE_WINDOWS) /* }{ */
 572 /* in Windows, can use specific Windows types */
 573
 574 #define LUA_INTEGER             __int64
 575 #define LUA_INTEGER_FRMLEN      "I64"
 576
 577 #define LUA_MAXINTEGER          _I64_MAX
 578 #define LUA_MININTEGER          _I64_MIN
 579
 580 #else                           /* }{ */
 581
 582 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
 583   or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
 584
 585 #endif                          /* } */
 586
 587 #else                           /* }{ */
 588
 589 #error "numeric integer type not defined"
 590
 591 #endif                          /* } */
 592
 593 /* }================================================================== */
 594
 595
 596 /*
 597 ** {==================================================================
 598 ** Dependencies with C99 and other C details
 599 ** ===================================================================
 600 */
 601
 602 /*
 603 @@ l_sprintf is equivalent to 'snprintf' or 'sprintf' in C89.
 604 ** (All uses in Lua have only one format item.)
 605 */
 606 // #if !defined(LUA_USE_C89)
 607 // #define l_sprintf(s,sz,f,i)  snprintf(s,sz,f,i)
 608 // #else
 609 // #define l_sprintf(s,sz,f,i)  ((void)(sz), sprintf(s,f,i))
 610 // #endif
 611 // int l_sprintf(char *buf, size_t size, const char *fmt, ...);
 612 //#include "printf.h"
 613 //#define l_sprintf snprintf_
 614
 615 /*
 616 @@ lua_strx2number converts an hexadecimal numeric string to a number.
 617 ** In C99, 'strtod' does that conversion. Otherwise, you can
 618 ** leave 'lua_strx2number' undefined and Lua will provide its own
 619 ** implementation.
 620 */
 621 #if !defined(LUA_USE_C89)
 622 #define lua_strx2number(s,p)            lua_str2number(s,p)
 623 #endif
 624
 625
 626 /*
 627 @@ lua_pointer2str converts a pointer to a readable string in a
 628 ** non-specified way.
 629 */
 630 #define lua_pointer2str(buff,sz,p)      l_sprintf(buff,sz,"%p",p)
 631
 632
 633 /*
 634 @@ lua_number2strx converts a float to an hexadecimal numeric string.
 635 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
 636 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
 637 ** provide its own implementation.
 638 */
 639 #if !defined(LUA_USE_C89)
 640 #define lua_number2strx(L,b,sz,f,n)  \
 641         ((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
 642 #endif
 643
 644
 645 /*
 646 ** 'strtof' and 'opf' variants for math functions are not valid in
 647 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
 648 ** availability of these variants. ('math.h' is already included in
 649 ** all files that use these macros.)
 650 */
 651 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
 652 #undef l_mathop  /* variants not available */
 653 #undef lua_str2number
 654 #define l_mathop(op)            (lua_Number)op  /* no variant */
 655 #define lua_str2number(s,p)     ((lua_Number)strtod((s), (p)))
 656 #endif
 657
 658
 659 /*
 660 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
 661 ** functions.  It must be a numerical type; Lua will use 'intptr_t' if
 662 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
 663 ** 'intptr_t' in C89)
 664 */
 665 #define LUA_KCONTEXT    ptrdiff_t
 666
 667 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
 668     __STDC_VERSION__ >= 199901L
 669 #include <stdint.h>
 670 #if defined(INTPTR_MAX)  /* even in C99 this type is optional */
 671 #undef LUA_KCONTEXT
 672 #define LUA_KCONTEXT    intptr_t
 673 #endif
 674 #endif
 675
 676
 677 /*
 678 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
 679 ** Change that if you do not want to use C locales. (Code using this
 680 ** macro must include header 'locale.h'.)
 681 */
 682 #if !defined(lua_getlocaledecpoint)
 683 #define lua_getlocaledecpoint()         ('.')
 684 #endif
 685
 686 /* }================================================================== */
 687
 688
 689 /*
 690 ** {==================================================================
 691 ** Language Variations
 692 ** =====================================================================
 693 */
 694
 695 /*
 696 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
 697 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
 698 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
 699 ** coercion from strings to numbers.
 700 */
 701 /* #define LUA_NOCVTN2S */
 702 /* #define LUA_NOCVTS2N */
 703
 704
 705 /*
 706 @@ LUA_USE_APICHECK turns on several consistency checks on the C API.
 707 ** Define it as a help when debugging C code.
 708 */
 709 #if defined(LUA_USE_APICHECK)
 710 #include <assert.h>
 711 #define luai_apicheck(l,e)      assert(e)
 712 #endif
 713
 714 /* }================================================================== */
 715
 716
 717 /*
 718 ** {==================================================================
 719 ** Macros that affect the API and must be stable (that is, must be the
 720 ** same when you compile Lua and when you compile code that links to
 721 ** Lua). You probably do not want/need to change them.
 722 ** =====================================================================
 723 */
 724
 725 /*
 726 @@ LUAI_MAXSTACK limits the size of the Lua stack.
 727 ** CHANGE it if you need a different limit. This limit is arbitrary;
 728 ** its only purpose is to stop Lua from consuming unlimited stack
 729 ** space (and to reserve some numbers for pseudo-indices).
 730 */
 731 #if LUAI_BITSINT >= 32
 732 #define LUAI_MAXSTACK           1000000
 733 #else
 734 #define LUAI_MAXSTACK           15000
 735 #endif
 736
 737
 738 /*
 739 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with
 740 ** a Lua state with very fast access.
 741 ** CHANGE it if you need a different size.
 742 */
 743 #define LUA_EXTRASPACE          (sizeof(void *))
 744
 745
 746 /*
 747 @@ LUA_IDSIZE gives the maximum size for the description of the source
 748 @@ of a function in debug information.
 749 ** CHANGE it if you want a different size.
 750 */
 751 #define LUA_IDSIZE      60
 752
 753
 754 /*
 755 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 756 ** CHANGE it if it uses too much C-stack space. (For long double,
 757 ** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a
 758 ** smaller buffer would force a memory allocation for each call to
 759 ** 'string.format'.)
 760 */
 761 //#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE
 762 //#define LUAL_BUFFERSIZE               8192
 763 //#else
 764 //#define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
 765 //#endif
 766
 767 //#define LUAL_BUFFERSIZE 256
 768
 769 /* }================================================================== */
 770
 771
 772 /*
 773 @@ LUA_QL describes how error messages quote program elements.
 774 ** Lua does not use these macros anymore; they are here for
 775 ** compatibility only.
 776 */
 777 #define LUA_QL(x)       "'" x "'"
 778 #define LUA_QS          LUA_QL("%s")
 779
 780
 781
 782
 783 /* =================================================================== */
 784
 785 /*
 786 ** Local configuration. You can use this space to add your redefinitions
 787 ** without modifying the main part of the file.
 788 */
 789
 790 #endif
 791