luaconf.h - external/github.com/lua/lua - Git at Google

 /*
 ** $Id: luaconf.h,v 1.219 2014/10/20 16:32:05 roberto Exp roberto $
 ** Configuration file for Lua
 ** See Copyright Notice in lua.h
 */


 #ifndef lconfig_h
 #define lconfig_h


 /*
 ** ==================================================================
 ** Search for "@@" to find all configurable definitions.
 ** ===================================================================
 */


 /*
 ** {==================================================================
 @@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines type for
 @@ Lua integers; you must define one of them.
 @@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines
 @@ type for Lua floats. You must define one of them.
 **
 ** These definitions set the numeric types for Lua. Lua should work fine
 ** with any mix of these previous options.  The usual configurations
 ** are 64-bit integers and floats (the default) and 32-bit integers and
 ** floats (Small Lua, for restricted platforms).
 **
 ** Note that C compilers not compliant with C99 may not have
 ** support for 'long long'. In that case, you should not use option
 ** 'LUA_INT_LONGLONG'; use instead option 'LUA_32BITS' for Small Lua
 ** (see below), or LUA_INT_LONG plus LUA_REAL_DOUBLE for an interpreter
 ** with 32-bit integers and double floating-point numbers.
 ** =====================================================================
 */

 /*
 ** Just uncomment the next line for Small Lua; you can also define
 ** LUA_32BITS in the make file, but changing here you ensure that
 ** all software connected to Lua will be compiled with the same
 ** configuration.
 */
 /* #define LUA_32BITS */

 #if !defined(LUA_32BITS) && !defined(LUA_ANSI)
 #define LUA_INT_LONGLONG
 #define LUA_REAL_DOUBLE
 #else	/* Lua 32 bits */
 #define LUA_INT_LONG
 #define LUA_REAL_FLOAT
 #endif

 /* }================================================================== */


 /*
 @@ 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	_CRT_SECURE_NO_WARNINGS  /* avoid warnings about ANSI C functions */
 #define LUA_DL_DLL
 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
 #endif


 #if defined(LUA_USE_LINUX)
 #define LUA_USE_C99
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
 #define LUA_USE_READLINE	/* needs some extra libraries */
 #endif

 #if defined(LUA_USE_MACOSX)
 #define LUA_USE_C99
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* does not need -ldl */
 #define LUA_USE_READLINE	/* needs an extra library: -lreadline */
 #endif


 /*
 @@ LUA_USE_C99 includes all functionality that depends on C 99.
 ** CHANGE it (define it) if your system is compatible.
 */
 #if defined(LUA_USE_C99)
 #define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
 #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)
 #endif


 #include <limits.h>
 #include <stddef.h>

 /*
 @@ 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.
 */
 #define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
 #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_SHRDIR	"!\\..\\share\\lua\\" LUA_VDIR "\\"
 #define LUA_PATH_DEFAULT  \
 		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
 		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \
                 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
 		".\\?.lua;" ".\\?\\init.lua"
 #define LUA_CPATH_DEFAULT \
 		LUA_CDIR"?.dll;" \
 		LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
 		LUA_CDIR"loadall.dll;" ".\\?.dll"

 #else			/* }{ */

 #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;" "./?/init.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						/* } */

 #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_EXTRASPACE defines the size of a raw memory area associated with
 ** a Lua state with very fast access.
 ** CHANGE it if you need a different size.
 */
 #define LUA_EXTRASPACE		(sizeof(void *))


 /*
 @@ LUA_QL describes how error messages quote program elements.
 ** Lua does not use these macros anymore; they are here for
 ** compatibility only.
 */
 #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.
 */
 #define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
 #define luai_writeline()	(luai_writestring("\n", 1), fflush(stdout))

 /*
 @@ 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


 /*
 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
 @@ functions.  It must be a numerical type; Lua will use 'intptr_t' if
 @@ available.
 */
 #if defined (LUA_USE_C99)
 #include <stdint.h>
 #if defined (INTPTR_MAX)  /* even in C99 this type is optional */
 #define LUA_KCONTEXT	intptr_t
 #endif
 #endif

 #if !defined(LUA_KCONTEXT)
 /* default definition (the nearest thing to 'intptr_t' in C89) */
 #define LUA_KCONTEXT	ptrdiff_t
 #endif


 /*
 ** {==================================================================
 ** Compatibility with previous versions
 ** ===================================================================
 */

 /*
 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
 ** You can define it to get all options, or change specific options
 ** to fit your specific needs.
 */
 #if defined(LUA_COMPAT_5_2)	/* { */

 /*
 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
 ** functions in the mathematical library.
 */
 #define LUA_COMPAT_MATHLIB

 /*
 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
 */
 #define LUA_COMPAT_BITLIB

 /*
 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
 */
 #define LUA_COMPAT_IPAIRS

 /*
 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
 ** luaL_checkint, luaL_checklong, etc.)
 */
 #define LUA_COMPAT_APIINTCASTS


 /*
 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
 @@ a float mark ('.0').
 ** This macro is not on by default even in compatibility mode,
 ** because this is not really an incompatibility.
 */
 /* #define LUA_COMPAT_FLOATSTRING */

 #endif				/* } */


 #if defined(LUA_COMPAT_5_1)	/* { */

 /*
 @@ 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 an 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


 /*
 ** {==================================================================
 ** Configuration for Numbers.
 ** Change these definitions if no predefined LUA_REAL_* / LUA_INT_*
 ** satisfy your needs.
 ** ===================================================================
 */

 /*
 @@ LUA_NUMBER is the floating-point type used by Lua.
 **
 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
 @@ over a floating number.
 **
 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
 @@ LUA_NUMBER_FMT is the format for writing floats.
 @@ lua_number2str converts a float to a string.
 **
 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations
 **
 @@ lua_str2number converts a decimal numeric string to a number.
 */

 #if defined(LUA_REAL_FLOAT)		/* { single float */

 #define LUA_NUMBER	float

 #define LUAI_UACNUMBER	double

 #define LUA_NUMBER_FRMLEN	""
 #define LUA_NUMBER_FMT		"%.7g"

 #define l_mathop(op)		op##f

 #define lua_str2number(s,p)	strtof((s), (p))


 #elif defined(LUA_REAL_LONGDOUBLE)	/* }{ long double */

 #define LUA_NUMBER	long double

 #define LUAI_UACNUMBER	long double

 #define LUA_NUMBER_FRMLEN	"L"
 #define LUA_NUMBER_FMT		"%.19Lg"

 #define l_mathop(op)		op##l

 #define lua_str2number(s,p)	strtold((s), (p))

 #elif defined(LUA_REAL_DOUBLE)		/* }{ double */

 #define LUA_NUMBER	double

 #define LUAI_UACNUMBER	double

 #define LUA_NUMBER_FRMLEN	""
 #define LUA_NUMBER_FMT		"%.14g"

 #define l_mathop(op)		op

 #define lua_str2number(s,p)	strtod((s), (p))

 #else					/* }{ */

 #error "numeric real type not defined"

 #endif					/* } */


 #if !defined(LUA_USE_C99)
 /* 'strtof' and 'opf' variants for math functions are C99 */
 #undef l_mathop
 #undef lua_str2number
 #define l_mathop(op)		(lua_Number)op
 #define lua_str2number(s,p)	((lua_Number)strtod((s), (p)))
 #endif


 #define l_floor(x)		(l_mathop(floor)(x))

 #define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))


 /*
 @@ lua_numtointeger converts a float number to an integer, or
 ** returns 0 if float is not within the range of a lua_Integer.
 ** (The range comparisons are tricky because of rounding. The tests
 ** here assume a two-complement representation, where MININTEGER always
 ** has an exact representation as a float; MAXINTEGER may not have one,
 ** and therefore its conversion to float may have an ill-defined value.)
 */
 #define lua_numtointeger(n,p) \
   ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
    (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
       (*(p) = (LUA_INTEGER)(n), 1))


 /*
 @@ The luai_num* macros define the primitive operations over numbers.
 ** They should work for any size of floating numbers.
 */

 /* the following operations need the math library */
 #if defined(lobject_c) || defined(lvm_c)
 #include <math.h>
 #define luai_nummod(L,a,b,m)  \
   { (m) = l_mathop(fmod)(a,b); if ((m) != 0 && (a)*(b) < 0) (m) += (b); }
 #define luai_numpow(L,a,b)	((void)L, 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(a,b)		((a)<(b))
 #define luai_numle(a,b)		((a)<=(b))
 #define luai_numisnan(a)	(!luai_numeq((a), (a)))
 #endif


 /*
 ** The following macro checks whether an operation is not safe to be
 ** performed by the constant folder. It should result in zero only if
 ** the operation is safe.
 */
 #define luai_numinvalidop(op,a,b)	0


 /*
 @@ LUA_INTEGER is the integer type used by Lua.
 **
 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
 **
 @@ LUAI_UACINT is the result of an 'usual argument conversion'
 @@ over a lUA_INTEGER.
 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
 @@ LUA_INTEGER_FMT is the format for writing integers.
 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
 @@ lua_integer2str converts an integer to a string.
 */


 /* The following definitions are good for most cases here */

 #define LUA_INTEGER_FMT		"%" LUA_INTEGER_FRMLEN "d"
 #define lua_integer2str(s,n)	sprintf((s), LUA_INTEGER_FMT, (n))

 #define LUAI_UACINT		LUA_INTEGER

 /*
 ** use LUAI_UACINT here to avoid problems with promotions (which
 ** can turn a comparison between unsigneds into a signed comparison)
 */
 #define LUA_UNSIGNED		unsigned LUAI_UACINT


 /* now the variable definitions */

 #if defined(LUA_INT_INT)		/* { int */

 #define LUA_INTEGER		int
 #define LUA_INTEGER_FRMLEN	""

 #define LUA_MAXINTEGER		INT_MAX
 #define LUA_MININTEGER		INT_MIN

 #elif defined(LUA_INT_LONG)	/* }{ long */

 #define LUA_INTEGER		long
 #define LUA_INTEGER_FRMLEN	"l"

 #define LUA_MAXINTEGER		LONG_MAX
 #define LUA_MININTEGER		LONG_MIN

 #elif defined(LUA_INT_LONGLONG)	/* }{ long long */

 #if defined(_WIN32)

 #define LUA_INTEGER		__int64
 #define LUA_INTEGER_FRMLEN	"I64"

 #define LUA_MAXINTEGER		_I64_MAX
 #define LUA_MININTEGER		_I64_MIN

 #else

 #if !defined(LLONG_MAX)
 #error "Compiler does not support 'long long'. See file 'luaconf.h' line 24"
 #endif

 #define LUA_INTEGER		long long
 #define LUA_INTEGER_FRMLEN	"ll"

 #define LUA_MAXINTEGER		LLONG_MAX
 #define LUA_MININTEGER		LLONG_MIN

 #endif

 #elif defined(LUA_INT_SHORT)	/* }{ short int */
 /*
 ** this option is for tests only; it is not particularly useful and
 ** it does not pass the test suit.
 */

 #define LUA_INTEGER		short int
 #define LUA_INTEGER_FRMLEN	""

 #define LUA_MAXINTEGER		SHRT_MAX
 #define LUA_MININTEGER		SHRT_MIN

 #undef  LUAI_UACINT
 #define LUAI_UACINT		int

 #undef  LUAI_MAXSTACK
 #define LUAI_MAXSTACK           15000

 #define l_castS2U(x)		((LUA_UNSIGNED)(unsigned short)(x))

 #else				/* }{ */

 #error "numeric integer type not defined"

 #endif				/* } */

 /* }================================================================== */


 /* =================================================================== */

 /*
 ** Local configuration. You can use this space to add your redefinitions
 ** without modifying the main part of the file.
 */


 #endif
	/*
	** $Id: luaconf.h,v 1.219 2014/10/20 16:32:05 roberto Exp roberto $
	** Configuration file for Lua
	** See Copyright Notice in lua.h
	*/


	#ifndef lconfig_h
	#define lconfig_h


	/*
	** ==================================================================
	** Search for "@@" to find all configurable definitions.
	** ===================================================================
	*/


	/*
	** {==================================================================
	@@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines type for
	@@ Lua integers; you must define one of them.
	@@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines
	@@ type for Lua floats. You must define one of them.
	**
	** These definitions set the numeric types for Lua. Lua should work fine
	** with any mix of these previous options. The usual configurations
	** are 64-bit integers and floats (the default) and 32-bit integers and
	** floats (Small Lua, for restricted platforms).
	**
	** Note that C compilers not compliant with C99 may not have
	** support for 'long long'. In that case, you should not use option
	** 'LUA_INT_LONGLONG'; use instead option 'LUA_32BITS' for Small Lua
	** (see below), or LUA_INT_LONG plus LUA_REAL_DOUBLE for an interpreter
	** with 32-bit integers and double floating-point numbers.
	** =====================================================================
	*/

	/*
	** Just uncomment the next line for Small Lua; you can also define
	** LUA_32BITS in the make file, but changing here you ensure that
	** all software connected to Lua will be compiled with the same
	** configuration.
	*/
	/* #define LUA_32BITS */

	#if !defined(LUA_32BITS) && !defined(LUA_ANSI)
	#define LUA_INT_LONGLONG
	#define LUA_REAL_DOUBLE
	#else /* Lua 32 bits */
	#define LUA_INT_LONG
	#define LUA_REAL_FLOAT
	#endif

	/* }================================================================== */


	/*
	@@ 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 _CRT_SECURE_NO_WARNINGS /* avoid warnings about ANSI C functions */
	#define LUA_DL_DLL
	#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */
	#endif



	#if defined(LUA_USE_LINUX)
	#define LUA_USE_C99
	#define LUA_USE_POSIX
	#define LUA_USE_DLOPEN /* needs an extra library: -ldl */
	#define LUA_USE_READLINE /* needs some extra libraries */
	#endif

	#if defined(LUA_USE_MACOSX)
	#define LUA_USE_C99
	#define LUA_USE_POSIX
	#define LUA_USE_DLOPEN /* does not need -ldl */
	#define LUA_USE_READLINE /* needs an extra library: -lreadline */
	#endif


	/*
	@@ LUA_USE_C99 includes all functionality that depends on C 99.
	** CHANGE it (define it) if your system is compatible.
	*/
	#if defined(LUA_USE_C99)
	#define LUA_USE_AFORMAT /* assume 'printf' handles 'aA' specifiers */
	#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)
	#endif



	#include <limits.h>
	#include <stddef.h>

	/*
	@@ 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.
	*/
	#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
	#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_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\"
	#define LUA_PATH_DEFAULT \
	LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
	LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \
	LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
	".\\?.lua;" ".\\?\\init.lua"
	#define LUA_CPATH_DEFAULT \
	LUA_CDIR"?.dll;" \
	LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
	LUA_CDIR"loadall.dll;" ".\\?.dll"

	#else /* }{ */

	#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;" "./?/init.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 /* } */

	#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_EXTRASPACE defines the size of a raw memory area associated with
	** a Lua state with very fast access.
	** CHANGE it if you need a different size.
	*/
	#define LUA_EXTRASPACE (sizeof(void *))


	/*
	@@ LUA_QL describes how error messages quote program elements.
	** Lua does not use these macros anymore; they are here for
	** compatibility only.
	*/
	#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.
	*/
	#define luai_writestring(s,l) fwrite((s), sizeof(char), (l), stdout)
	#define luai_writeline() (luai_writestring("\n", 1), fflush(stdout))

	/*
	@@ 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


	/*
	@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
	@@ functions. It must be a numerical type; Lua will use 'intptr_t' if
	@@ available.
	*/
	#if defined (LUA_USE_C99)
	#include <stdint.h>
	#if defined (INTPTR_MAX) /* even in C99 this type is optional */
	#define LUA_KCONTEXT intptr_t
	#endif
	#endif

	#if !defined(LUA_KCONTEXT)
	/* default definition (the nearest thing to 'intptr_t' in C89) */
	#define LUA_KCONTEXT ptrdiff_t
	#endif


	/*
	** {==================================================================
	** Compatibility with previous versions
	** ===================================================================
	*/

	/*
	@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
	@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
	** You can define it to get all options, or change specific options
	** to fit your specific needs.
	*/
	#if defined(LUA_COMPAT_5_2) /* { */

	/*
	@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
	** functions in the mathematical library.
	*/
	#define LUA_COMPAT_MATHLIB

	/*
	@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
	*/
	#define LUA_COMPAT_BITLIB

	/*
	@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
	*/
	#define LUA_COMPAT_IPAIRS

	/*
	@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
	** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
	** luaL_checkint, luaL_checklong, etc.)
	*/
	#define LUA_COMPAT_APIINTCASTS


	/*
	@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
	@@ a float mark ('.0').
	** This macro is not on by default even in compatibility mode,
	** because this is not really an incompatibility.
	*/
	/* #define LUA_COMPAT_FLOATSTRING */

	#endif /* } */


	#if defined(LUA_COMPAT_5_1) /* { */

	/*
	@@ 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 an 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


	/*
	** {==================================================================
	** Configuration for Numbers.
	** Change these definitions if no predefined LUA_REAL_* / LUA_INT_*
	** satisfy your needs.
	** ===================================================================
	*/

	/*
	@@ LUA_NUMBER is the floating-point type used by Lua.
	**
	@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
	@@ over a floating number.
	**
	@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
	@@ LUA_NUMBER_FMT is the format for writing floats.
	@@ lua_number2str converts a float to a string.
	**
	@@ l_mathop allows the addition of an 'l' or 'f' to all math operations
	**
	@@ lua_str2number converts a decimal numeric string to a number.
	*/

	#if defined(LUA_REAL_FLOAT) /* { single float */

	#define LUA_NUMBER float

	#define LUAI_UACNUMBER double

	#define LUA_NUMBER_FRMLEN ""
	#define LUA_NUMBER_FMT "%.7g"

	#define l_mathop(op) op##f

	#define lua_str2number(s,p) strtof((s), (p))


	#elif defined(LUA_REAL_LONGDOUBLE) /* }{ long double */

	#define LUA_NUMBER long double

	#define LUAI_UACNUMBER long double

	#define LUA_NUMBER_FRMLEN "L"
	#define LUA_NUMBER_FMT "%.19Lg"

	#define l_mathop(op) op##l

	#define lua_str2number(s,p) strtold((s), (p))

	#elif defined(LUA_REAL_DOUBLE) /* }{ double */

	#define LUA_NUMBER double

	#define LUAI_UACNUMBER double

	#define LUA_NUMBER_FRMLEN ""
	#define LUA_NUMBER_FMT "%.14g"

	#define l_mathop(op) op

	#define lua_str2number(s,p) strtod((s), (p))

	#else /* }{ */

	#error "numeric real type not defined"

	#endif /* } */


	#if !defined(LUA_USE_C99)
	/* 'strtof' and 'opf' variants for math functions are C99 */
	#undef l_mathop
	#undef lua_str2number
	#define l_mathop(op) (lua_Number)op
	#define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
	#endif


	#define l_floor(x) (l_mathop(floor)(x))

	#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))


	/*
	@@ lua_numtointeger converts a float number to an integer, or
	** returns 0 if float is not within the range of a lua_Integer.
	** (The range comparisons are tricky because of rounding. The tests
	** here assume a two-complement representation, where MININTEGER always
	** has an exact representation as a float; MAXINTEGER may not have one,
	** and therefore its conversion to float may have an ill-defined value.)
	*/
	#define lua_numtointeger(n,p) \
	((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
	(n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
	(*(p) = (LUA_INTEGER)(n), 1))


	/*
	@@ The luai_num* macros define the primitive operations over numbers.
	** They should work for any size of floating numbers.
	*/

	/* the following operations need the math library */
	#if defined(lobject_c) \|\| defined(lvm_c)
	#include <math.h>
	#define luai_nummod(L,a,b,m) \
	{ (m) = l_mathop(fmod)(a,b); if ((m) != 0 && (a)*(b) < 0) (m) += (b); }
	#define luai_numpow(L,a,b) ((void)L, 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(a,b) ((a)<(b))
	#define luai_numle(a,b) ((a)<=(b))
	#define luai_numisnan(a) (!luai_numeq((a), (a)))
	#endif


	/*
	** The following macro checks whether an operation is not safe to be
	** performed by the constant folder. It should result in zero only if
	** the operation is safe.
	*/
	#define luai_numinvalidop(op,a,b) 0


	/*
	@@ LUA_INTEGER is the integer type used by Lua.
	**
	@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
	**
	@@ LUAI_UACINT is the result of an 'usual argument conversion'
	@@ over a lUA_INTEGER.
	@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
	@@ LUA_INTEGER_FMT is the format for writing integers.
	@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
	@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
	@@ lua_integer2str converts an integer to a string.
	*/


	/* The following definitions are good for most cases here */

	#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
	#define lua_integer2str(s,n) sprintf((s), LUA_INTEGER_FMT, (n))

	#define LUAI_UACINT LUA_INTEGER

	/*
	** use LUAI_UACINT here to avoid problems with promotions (which
	** can turn a comparison between unsigneds into a signed comparison)
	*/
	#define LUA_UNSIGNED unsigned LUAI_UACINT


	/* now the variable definitions */

	#if defined(LUA_INT_INT) /* { int */

	#define LUA_INTEGER int
	#define LUA_INTEGER_FRMLEN ""

	#define LUA_MAXINTEGER INT_MAX
	#define LUA_MININTEGER INT_MIN

	#elif defined(LUA_INT_LONG) /* }{ long */

	#define LUA_INTEGER long
	#define LUA_INTEGER_FRMLEN "l"

	#define LUA_MAXINTEGER LONG_MAX
	#define LUA_MININTEGER LONG_MIN

	#elif defined(LUA_INT_LONGLONG) /* }{ long long */

	#if defined(_WIN32)

	#define LUA_INTEGER __int64
	#define LUA_INTEGER_FRMLEN "I64"

	#define LUA_MAXINTEGER _I64_MAX
	#define LUA_MININTEGER _I64_MIN

	#else

	#if !defined(LLONG_MAX)
	#error "Compiler does not support 'long long'. See file 'luaconf.h' line 24"
	#endif

	#define LUA_INTEGER long long
	#define LUA_INTEGER_FRMLEN "ll"

	#define LUA_MAXINTEGER LLONG_MAX
	#define LUA_MININTEGER LLONG_MIN

	#endif

	#elif defined(LUA_INT_SHORT) /* }{ short int */
	/*
	** this option is for tests only; it is not particularly useful and
	** it does not pass the test suit.
	*/

	#define LUA_INTEGER short int
	#define LUA_INTEGER_FRMLEN ""

	#define LUA_MAXINTEGER SHRT_MAX
	#define LUA_MININTEGER SHRT_MIN

	#undef LUAI_UACINT
	#define LUAI_UACINT int

	#undef LUAI_MAXSTACK
	#define LUAI_MAXSTACK 15000

	#define l_castS2U(x) ((LUA_UNSIGNED)(unsigned short)(x))

	#else /* }{ */

	#error "numeric integer type not defined"

	#endif /* } */

	/* }================================================================== */




	/* =================================================================== */

	/*
	** Local configuration. You can use this space to add your redefinitions
	** without modifying the main part of the file.
	*/





	#endif