text: /*
  ** $Id: luaconf.h,v 1.176.1.2 2013/11/21 17:26:16 roberto Exp $
  ** Configuration file for Lua
  ** See Copyright Notice in lua.h
  */
  
  
  #ifndef lconfig_h
  #define lconfig_h
  
  #include <limits.h>
  #include <stddef.h>
  
  
  /*
  ** ==================================================================
  ** Search for "@@" to find all configurable definitions.
  ** ===================================================================
  */
  
  
  /*
  @@ LUA_ANSI controls the use of non-ansi features.
  ** CHANGE it (define it) if you want Lua to avoid the use of any
  ** non-ansi feature or library.
  */
  #if !defined(LUA_ANSI) && defined(__STRICT_ANSI__)
  #define LUA_ANSI
  #endif
  
  
  #if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE)
  #define LUA_WIN		/* enable goodies for regular Windows platforms */
  #endif
  
  #if defined(LUA_WIN)
  #define LUA_DL_DLL
  #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
  #endif
  
  
  
  #if defined(LUA_USE_LINUX)
  #define LUA_USE_POSIX
  #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
  #define LUA_USE_READLINE	/* needs some extra libraries */
  #define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
  #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
  #define LUA_USE_LONGLONG	/* assume support for long long */
  #endif
  
  #if defined(LUA_USE_MACOSX)
  #define LUA_USE_POSIX
  #define LUA_USE_DLOPEN		/* does not need -ldl */
  #define LUA_USE_READLINE	/* needs an extra library: -lreadline */
  #define LUA_USE_STRTODHEX	/* assume 'strtod' handles hex formats */
  #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
  #define LUA_USE_LONGLONG	/* assume support for long long */
  #endif
  
  
  
  /*
  @@ LUA_USE_POSIX includes all functionality listed as X/Open System
  @* Interfaces Extension (XSI).
  ** CHANGE it (define it) if your system is XSI compatible.
  */
  #if defined(LUA_USE_POSIX)
  #define LUA_USE_MKSTEMP
  #define LUA_USE_ISATTY
  #define LUA_USE_POPEN
  #define LUA_USE_ULONGJMP
  #define LUA_USE_GMTIME_R
  #endif
  
  
  
  /*
  @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
  @* Lua libraries.
  @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
  @* C libraries.
  ** CHANGE them if your machine has a non-conventional directory
  ** hierarchy or if you want to install your libraries in
  ** non-conventional directories.
  */
  #if defined(_WIN32)	/* { */
  /*
  ** In Windows, any exclamation mark ('!') in the path is replaced by the
  ** path of the directory of the executable file of the current process.
  */
  #define LUA_LDIR	"!\\lua\\"
  #define LUA_CDIR	"!\\"
  #define LUA_PATH_DEFAULT  \
  		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
  		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" ".\\?.lua"
  #define LUA_CPATH_DEFAULT \
  		LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll;" ".\\?.dll"
  
  #else			/* }{ */
  
  #define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/"
  #define LUA_ROOT	"/usr/local/"
  #define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR
  #define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR
  #define LUA_PATH_DEFAULT  \
  		LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
  		LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" "./?.lua"
  #define LUA_CPATH_DEFAULT \
  		LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
  #endif			/* } */
  
  
  /*
  @@ LUA_DIRSEP is the directory separator (for submodules).
  ** CHANGE it if your machine does not use "/" as the directory separator
  ** and is not Windows. (On Windows Lua automatically uses "\".)
  */
  #if defined(_WIN32)
  #define LUA_DIRSEP	"\\"
  #else
  #define LUA_DIRSEP	"/"
  #endif
  
  
  /*
  @@ LUA_ENV is the name of the variable that holds the current
  @@ environment, used to access global names.
  ** CHANGE it if you do not like this name.
  */
  #define LUA_ENV		"_ENV"
  
  
  /*
  @@ LUA_API is a mark for all core API functions.
  @@ LUALIB_API is a mark for all auxiliary library functions.
  @@ LUAMOD_API is a mark for all standard library opening functions.
  ** CHANGE them if you need to define those functions in some special way.
  ** For instance, if you want to create one Windows DLL with the core and
  ** the libraries, you may want to use the following definition (define
  ** LUA_BUILD_AS_DLL to get it).
  */
  #if defined(LUA_BUILD_AS_DLL)	/* { */
  
  #if defined(LUA_CORE) || defined(LUA_LIB)	/* { */
  #define LUA_API __declspec(dllexport)
  #else						/* }{ */
  #define LUA_API __declspec(dllimport)
  #endif						/* } */
  
  #elif defined(EMSCRIPTEN)
  
  /*
   * Forces LLVM to not dead-code-eliminate a function. This also
   * exports the function, as if you added it to EXPORTED_FUNCTIONS.
   */
  #define LUA_API     __attribute__((used)) extern
  
  #else				/* }{ */
  
  #define LUA_API		extern
  
  #endif				/* } */
  
  
  /* more often than not the libs go together with the core */
  #define LUALIB_API	LUA_API
  #define LUAMOD_API	LUALIB_API
  
  
  /*
  @@ LUAI_FUNC is a mark for all extern functions that are not to be
  @* exported to outside modules.
  @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
  @* that are not to be exported to outside modules (LUAI_DDEF for
  @* definitions and LUAI_DDEC for declarations).
  ** CHANGE them if you need to mark them in some special way. Elf/gcc
  ** (versions 3.2 and later) mark them as "hidden" to optimize access
  ** when Lua is compiled as a shared library. Not all elf targets support
  ** this attribute. Unfortunately, gcc does not offer a way to check
  ** whether the target offers that support, and those without support
  ** give a warning about it. To avoid these warnings, change to the
  ** default definition.
  */
  #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
      defined(__ELF__)		/* { */
  #define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
  #define LUAI_DDEC	LUAI_FUNC
  #define LUAI_DDEF	/* empty */
  
  #else				/* }{ */
  #define LUAI_FUNC	extern
  #define LUAI_DDEC	extern
  #define LUAI_DDEF	/* empty */
  #endif				/* } */
  
  
  
  /*
  @@ LUA_QL describes how error messages quote program elements.
  ** CHANGE it if you want a different appearance.
  */
  #define LUA_QL(x)	"'" x "'"
  #define LUA_QS		LUA_QL("%s")
  
  
  /*
  @@ LUA_IDSIZE gives the maximum size for the description of the source
  @* of a function in debug information.
  ** CHANGE it if you want a different size.
  */
  #define LUA_IDSIZE	60
  
  
  /*
  @@ luai_writestring/luai_writeline define how 'print' prints its results.
  ** They are only used in libraries and the stand-alone program. (The #if
  ** avoids including 'stdio.h' everywhere.)
  */
  #if defined(LUA_LIB) || defined(lua_c)
  #include <stdio.h>
  #define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
  #define luai_writeline()	(luai_writestring("\n", 1), fflush(stdout))
  #endif
  
  /*
  @@ luai_writestringerror defines how to print error messages.
  ** (A format string with one argument is enough for Lua...)
  */
  #define luai_writestringerror(s,p) \
  	(fprintf(stderr, (s), (p)), fflush(stderr))
  
  
  /*
  @@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
  ** strings that are internalized. (Cannot be smaller than reserved words
  ** or tags for metamethods, as these strings must be internalized;
  ** #("function") = 8, #("__newindex") = 10.)
  */
  #define LUAI_MAXSHORTLEN        40
  
  
  
  /*
  ** {==================================================================
  ** Compatibility with previous versions
  ** ===================================================================
  */
  
  /*
  @@ LUA_COMPAT_ALL controls all compatibility options.
  ** You can define it to get all options, or change specific options
  ** to fit your specific needs.
  */
  #if defined(LUA_COMPAT_ALL)	/* { */
  
  /*
  @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
  ** You can replace it with 'table.unpack'.
  */
  #define LUA_COMPAT_UNPACK
  
  /*
  @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
  ** You can replace it with 'package.searchers'.
  */
  #define LUA_COMPAT_LOADERS
  
  /*
  @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
  ** You can call your C function directly (with light C functions).
  */
  #define lua_cpcall(L,f,u)  \
  	(lua_pushcfunction(L, (f)), \
  	 lua_pushlightuserdata(L,(u)), \
  	 lua_pcall(L,1,0,0))
  
  
  /*
  @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
  ** You can rewrite 'log10(x)' as 'log(x, 10)'.
  */
  #define LUA_COMPAT_LOG10
  
  /*
  @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
  ** library. You can rewrite 'loadstring(s)' as 'load(s)'.
  */
  #define LUA_COMPAT_LOADSTRING
  
  /*
  @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
  */
  #define LUA_COMPAT_MAXN
  
  /*
  @@ The following macros supply trivial compatibility for some
  ** changes in the API. The macros themselves document how to
  ** change your code to avoid using them.
  */
  #define lua_strlen(L,i)		lua_rawlen(L, (i))
  
  #define lua_objlen(L,i)		lua_rawlen(L, (i))
  
  #define lua_equal(L,idx1,idx2)		lua_compare(L,(idx1),(idx2),LUA_OPEQ)
  #define lua_lessthan(L,idx1,idx2)	lua_compare(L,(idx1),(idx2),LUA_OPLT)
  
  /*
  @@ LUA_COMPAT_MODULE controls compatibility with previous
  ** module functions 'module' (Lua) and 'luaL_register' (C).
  */
  #define LUA_COMPAT_MODULE
  
  #endif				/* } */
  
  /* }================================================================== */
  
  
  
  /*
  @@ LUAI_BITSINT defines the number of bits in an int.
  ** CHANGE here if Lua cannot automatically detect the number of bits of
  ** your machine. Probably you do not need to change this.
  */
  /* avoid overflows in comparison */
  #if INT_MAX-20 < 32760		/* { */
  #define LUAI_BITSINT	16
  #elif INT_MAX > 2147483640L	/* }{ */
  /* int has at least 32 bits */
  #define LUAI_BITSINT	32
  #else				/* }{ */
  #error "you must define LUA_BITSINT with number of bits in an integer"
  #endif				/* } */
  
  
  /*
  @@ LUA_INT32 is a signed integer with exactly 32 bits.
  @@ LUAI_UMEM is an unsigned integer big enough to count the total
  @* memory used by Lua.
  @@ LUAI_MEM is a signed integer big enough to count the total memory
  @* used by Lua.
  ** CHANGE here if for some weird reason the default definitions are not
  ** good enough for your machine. Probably you do not need to change
  ** this.
  */
  #if LUAI_BITSINT >= 32		/* { */
  #define LUA_INT32	int
  #define LUAI_UMEM	size_t
  #define LUAI_MEM	ptrdiff_t
  #else				/* }{ */
  /* 16-bit ints */
  #define LUA_INT32	long
  #define LUAI_UMEM	unsigned long
  #define LUAI_MEM	long
  #endif				/* } */
  
  
  /*
  @@ LUAI_MAXSTACK limits the size of the Lua stack.
  ** CHANGE it if you need a different limit. This limit is arbitrary;
  ** its only purpose is to stop Lua from consuming unlimited stack
  ** space (and to reserve some numbers for pseudo-indices).
  */
  #if LUAI_BITSINT >= 32
  #define LUAI_MAXSTACK		1000000
  #else
  #define LUAI_MAXSTACK		15000
  #endif
  
  /* reserve some space for error handling */
  #define LUAI_FIRSTPSEUDOIDX	(-LUAI_MAXSTACK - 1000)
  
  
  
  
  /*
  @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
  ** CHANGE it if it uses too much C-stack space.
  */
  #define LUAL_BUFFERSIZE		BUFSIZ
  
  
  
  
  /*
  ** {==================================================================
  @@ LUA_NUMBER is the type of numbers in Lua.
  ** CHANGE the following definitions only if you want to build Lua
  ** with a number type different from double. You may also need to
  ** change lua_number2int & lua_number2integer.
  ** ===================================================================
  */
  
  #define LUA_NUMBER_DOUBLE
  #define LUA_NUMBER	double
  
  /*
  @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
  @* over a number.
  */
  #define LUAI_UACNUMBER	double
  
  
  /*
  @@ LUA_NUMBER_SCAN is the format for reading numbers.
  @@ LUA_NUMBER_FMT is the format for writing numbers.
  @@ lua_number2str converts a number to a string.
  @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
  */
  #define LUA_NUMBER_SCAN		"%lf"
  #define LUA_NUMBER_FMT		"%.14g"
  #define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))
  #define LUAI_MAXNUMBER2STR	32 /* 16 digits, sign, point, and \0 */
  
  
  /*
  @@ l_mathop allows the addition of an 'l' or 'f' to all math operations
  */
  #define l_mathop(x)		(x)
  
  
  /*
  @@ lua_str2number converts a decimal numeric string to a number.
  @@ lua_strx2number converts an hexadecimal numeric string to a number.
  ** In C99, 'strtod' does both conversions. C89, however, has no function
  ** to convert floating hexadecimal strings to numbers. For these
  ** systems, you can leave 'lua_strx2number' undefined and Lua will
  ** provide its own implementation.
  */
  #define lua_str2number(s,p)	strtod((s), (p))
  
  #if defined(LUA_USE_STRTODHEX)
  #define lua_strx2number(s,p)	strtod((s), (p))
  #endif
  
  
  /*
  @@ The luai_num* macros define the primitive operations over numbers.
  */
  
  /* the following operations need the math library */
  #if defined(lobject_c) || defined(lvm_c)
  #include <math.h>
  #define luai_nummod(L,a,b)	((a) - l_mathop(floor)((a)/(b))*(b))
  #define luai_numpow(L,a,b)	(l_mathop(pow)(a,b))
  #endif
  
  /* these are quite standard operations */
  #if defined(LUA_CORE)
  #define luai_numadd(L,a,b)	((a)+(b))
  #define luai_numsub(L,a,b)	((a)-(b))
  #define luai_nummul(L,a,b)	((a)*(b))
  #define luai_numdiv(L,a,b)	((a)/(b))
  #define luai_numunm(L,a)	(-(a))
  #define luai_numeq(a,b)		((a)==(b))
  #define luai_numlt(L,a,b)	((a)<(b))
  #define luai_numle(L,a,b)	((a)<=(b))
  #define luai_numisnan(L,a)	(!luai_numeq((a), (a)))
  #endif
  
  
  
  /*
  @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
  ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
  ** machines, ptrdiff_t gives a good choice between int or long.)
  */
  #define LUA_INTEGER	ptrdiff_t
  
  /*
  @@ LUA_UNSIGNED is the integral type used by lua_pushunsigned/lua_tounsigned.
  ** It must have at least 32 bits.
  */
  #define LUA_UNSIGNED	unsigned LUA_INT32
  
  
  
  /*
  ** Some tricks with doubles
  */
  
  #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI)	/* { */
  /*
  ** The next definitions activate some tricks to speed up the
  ** conversion from doubles to integer types, mainly to LUA_UNSIGNED.
  **
  @@ LUA_MSASMTRICK uses Microsoft assembler to avoid clashes with a
  ** DirectX idiosyncrasy.
  **
  @@ LUA_IEEE754TRICK uses a trick that should work on any machine
  ** using IEEE754 with a 32-bit integer type.
  **
  @@ LUA_IEEELL extends the trick to LUA_INTEGER; should only be
  ** defined when LUA_INTEGER is a 32-bit integer.
  **
  @@ LUA_IEEEENDIAN is the endianness of doubles in your machine
  ** (0 for little endian, 1 for big endian); if not defined, Lua will
  ** check it dynamically for LUA_IEEE754TRICK (but not for LUA_NANTRICK).
  **
  @@ LUA_NANTRICK controls the use of a trick to pack all types into
  ** a single double value, using NaN values to represent non-number
  ** values. The trick only works on 32-bit machines (ints and pointers
  ** are 32-bit values) with numbers represented as IEEE 754-2008 doubles
  ** with conventional endianess (12345678 or 87654321), in CPUs that do
  ** not produce signaling NaN values (all NaNs are quiet).
  */
  
  /* Microsoft compiler on a Pentium (32 bit) ? */
  #if defined(LUA_WIN) && defined(_MSC_VER) && defined(_M_IX86)	/* { */
  
  #define LUA_MSASMTRICK
  #define LUA_IEEEENDIAN		0
  #define LUA_NANTRICK
  
  
  /* pentium 32 bits? */
  #elif defined(__i386__) || defined(__i386) || defined(__X86__) /* }{ */
  
  #define LUA_IEEE754TRICK
  #define LUA_IEEELL
  #define LUA_IEEEENDIAN		0
  #define LUA_NANTRICK
  
  /* pentium 64 bits? */
  #elif defined(__x86_64)						/* }{ */
  
  #define LUA_IEEE754TRICK
  #define LUA_IEEEENDIAN		0
  
  #elif defined(__POWERPC__) || defined(__ppc__)			/* }{ */
  
  #define LUA_IEEE754TRICK
  #define LUA_IEEEENDIAN		1
  
  #else								/* }{ */
  
  /* assume IEEE754 and a 32-bit integer type */
  #define LUA_IEEE754TRICK
  
  #endif								/* } */
  
  #endif							/* } */
  
  /* }================================================================== */
  
  
  
  
  /* =================================================================== */
  
  /*
  ** Local configuration. You can use this space to add your redefinitions
  ** without modifying the main part of the file.
  */
  
  
  
  #endif
  
  