rlm@1: /*
rlm@1: ** $Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $
rlm@1: ** Configuration file for Lua
rlm@1: ** See Copyright Notice in lua.h
rlm@1: */
rlm@1: 
rlm@1: 
rlm@1: #ifndef lconfig_h
rlm@1: #define lconfig_h
rlm@1: 
rlm@1: #include <limits.h>
rlm@1: #include <stddef.h>
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: ** ==================================================================
rlm@1: ** Search for "@@" to find all configurable definitions.
rlm@1: ** ===================================================================
rlm@1: */
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_ANSI controls the use of non-ansi features.
rlm@1: ** CHANGE it (define it) if you want Lua to avoid the use of any
rlm@1: ** non-ansi feature or library.
rlm@1: */
rlm@1: #if defined(__STRICT_ANSI__)
rlm@1: #define LUA_ANSI
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: #if !defined(LUA_ANSI) && defined(_WIN32)
rlm@1: #define LUA_WIN
rlm@1: #endif
rlm@1: 
rlm@1: #if defined(LUA_USE_LINUX)
rlm@1: #define LUA_USE_POSIX
rlm@1: #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
rlm@1: #define LUA_USE_READLINE	/* needs some extra libraries */
rlm@1: #endif
rlm@1: 
rlm@1: #if defined(LUA_USE_MACOSX)
rlm@1: #define LUA_USE_POSIX
rlm@1: #define LUA_DL_DYLD		/* does not need extra library */
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_USE_POSIX includes all functionallity listed as X/Open System
rlm@1: @* Interfaces Extension (XSI).
rlm@1: ** CHANGE it (define it) if your system is XSI compatible.
rlm@1: */
rlm@1: #if defined(LUA_USE_POSIX)
rlm@1: #define LUA_USE_MKSTEMP
rlm@1: #define LUA_USE_ISATTY
rlm@1: #define LUA_USE_POPEN
rlm@1: #define LUA_USE_ULONGJMP
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_PATH and LUA_CPATH are the names of the environment variables that
rlm@1: @* Lua check to set its paths.
rlm@1: @@ LUA_INIT is the name of the environment variable that Lua
rlm@1: @* checks for initialization code.
rlm@1: ** CHANGE them if you want different names.
rlm@1: */
rlm@1: #define LUA_PATH        "LUA_PATH"
rlm@1: #define LUA_CPATH       "LUA_CPATH"
rlm@1: #define LUA_INIT	"LUA_INIT"
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
rlm@1: @* Lua libraries.
rlm@1: @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
rlm@1: @* C libraries.
rlm@1: ** CHANGE them if your machine has a non-conventional directory
rlm@1: ** hierarchy or if you want to install your libraries in
rlm@1: ** non-conventional directories.
rlm@1: */
rlm@1: #if defined(_WIN32)
rlm@1: /*
rlm@1: ** In Windows, any exclamation mark ('!') in the path is replaced by the
rlm@1: ** path of the directory of the executable file of the current process.
rlm@1: */
rlm@1: #define LUA_LDIR	"!\\lua\\"
rlm@1: #define LUA_CDIR	"!\\"
rlm@1: #define LUA_PATH_DEFAULT  \
rlm@1: 		".\\?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
rlm@1: 		             LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua"
rlm@1: #define LUA_CPATH_DEFAULT \
rlm@1: 	".\\?.dll;"  LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"
rlm@1: 
rlm@1: #else
rlm@1: #define LUA_ROOT	"/usr/local/"
rlm@1: #define LUA_LDIR	LUA_ROOT "share/lua/5.1/"
rlm@1: #define LUA_CDIR	LUA_ROOT "lib/lua/5.1/"
rlm@1: #define LUA_PATH_DEFAULT  \
rlm@1: 		"./?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
rlm@1: 		            LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua"
rlm@1: #define LUA_CPATH_DEFAULT \
rlm@1: 	"./?.so;"  LUA_CDIR"?.so;" LUA_CDIR"loadall.so"
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_DIRSEP is the directory separator (for submodules).
rlm@1: ** CHANGE it if your machine does not use "/" as the directory separator
rlm@1: ** and is not Windows. (On Windows Lua automatically uses "\".)
rlm@1: */
rlm@1: #if defined(_WIN32)
rlm@1: #define LUA_DIRSEP	"\\"
rlm@1: #else
rlm@1: #define LUA_DIRSEP	"/"
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_PATHSEP is the character that separates templates in a path.
rlm@1: @@ LUA_PATH_MARK is the string that marks the substitution points in a
rlm@1: @* template.
rlm@1: @@ LUA_EXECDIR in a Windows path is replaced by the executable's
rlm@1: @* directory.
rlm@1: @@ LUA_IGMARK is a mark to ignore all before it when bulding the
rlm@1: @* luaopen_ function name.
rlm@1: ** CHANGE them if for some reason your system cannot use those
rlm@1: ** characters. (E.g., if one of those characters is a common character
rlm@1: ** in file/directory names.) Probably you do not need to change them.
rlm@1: */
rlm@1: #define LUA_PATHSEP	";"
rlm@1: #define LUA_PATH_MARK	"?"
rlm@1: #define LUA_EXECDIR	"!"
rlm@1: #define LUA_IGMARK	"-"
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
rlm@1: ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
rlm@1: ** machines, ptrdiff_t gives a good choice between int or long.)
rlm@1: */
rlm@1: #define LUA_INTEGER	ptrdiff_t
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_API is a mark for all core API functions.
rlm@1: @@ LUALIB_API is a mark for all standard library functions.
rlm@1: ** CHANGE them if you need to define those functions in some special way.
rlm@1: ** For instance, if you want to create one Windows DLL with the core and
rlm@1: ** the libraries, you may want to use the following definition (define
rlm@1: ** LUA_BUILD_AS_DLL to get it).
rlm@1: */
rlm@1: #if defined(LUA_BUILD_AS_DLL)
rlm@1: 
rlm@1: #if defined(LUA_CORE) || defined(LUA_LIB)
rlm@1: #define LUA_API __declspec(dllexport)
rlm@1: #else
rlm@1: #define LUA_API __declspec(dllimport)
rlm@1: #endif
rlm@1: 
rlm@1: #else
rlm@1: 
rlm@1: #define LUA_API		extern
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: /* more often than not the libs go together with the core */
rlm@1: #define LUALIB_API	LUA_API
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_FUNC is a mark for all extern functions that are not to be
rlm@1: @* exported to outside modules.
rlm@1: @@ LUAI_DATA is a mark for all extern (const) variables that are not to
rlm@1: @* be exported to outside modules.
rlm@1: ** CHANGE them if you need to mark them in some special way. Elf/gcc
rlm@1: ** (versions 3.2 and later) mark them as "hidden" to optimize access
rlm@1: ** when Lua is compiled as a shared library.
rlm@1: */
rlm@1: #if defined(luaall_c)
rlm@1: #define LUAI_FUNC	static
rlm@1: #define LUAI_DATA	/* empty */
rlm@1: 
rlm@1: #elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
rlm@1:       defined(__ELF__)
rlm@1: #define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
rlm@1: #define LUAI_DATA	LUAI_FUNC
rlm@1: 
rlm@1: #else
rlm@1: #define LUAI_FUNC	extern
rlm@1: #define LUAI_DATA	extern
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_QL describes how error messages quote program elements.
rlm@1: ** CHANGE it if you want a different appearance.
rlm@1: */
rlm@1: #define LUA_QL(x)	"'" x "'"
rlm@1: #define LUA_QS		LUA_QL("%s")
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_IDSIZE gives the maximum size for the description of the source
rlm@1: @* of a function in debug information.
rlm@1: ** CHANGE it if you want a different size.
rlm@1: */
rlm@1: #define LUA_IDSIZE	60
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: ** {==================================================================
rlm@1: ** Stand-alone configuration
rlm@1: ** ===================================================================
rlm@1: */
rlm@1: 
rlm@1: #if defined(lua_c) || defined(luaall_c)
rlm@1: 
rlm@1: /*
rlm@1: @@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
rlm@1: @* is, whether we're running lua interactively).
rlm@1: ** CHANGE it if you have a better definition for non-POSIX/non-Windows
rlm@1: ** systems.
rlm@1: */
rlm@1: #if defined(LUA_USE_ISATTY)
rlm@1: #include <unistd.h>
rlm@1: #define lua_stdin_is_tty()	isatty(0)
rlm@1: #elif defined(LUA_WIN)
rlm@1: #include <io.h>
rlm@1: #include <stdio.h>
rlm@1: #define lua_stdin_is_tty()	_isatty(_fileno(stdin))
rlm@1: #else
rlm@1: #define lua_stdin_is_tty()	1  /* assume stdin is a tty */
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_PROMPT is the default prompt used by stand-alone Lua.
rlm@1: @@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
rlm@1: ** CHANGE them if you want different prompts. (You can also change the
rlm@1: ** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
rlm@1: */
rlm@1: #define LUA_PROMPT		"> "
rlm@1: #define LUA_PROMPT2		">> "
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_PROGNAME is the default name for the stand-alone Lua program.
rlm@1: ** CHANGE it if your stand-alone interpreter has a different name and
rlm@1: ** your system is not able to detect that name automatically.
rlm@1: */
rlm@1: #define LUA_PROGNAME		"lua"
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_MAXINPUT is the maximum length for an input line in the
rlm@1: @* stand-alone interpreter.
rlm@1: ** CHANGE it if you need longer lines.
rlm@1: */
rlm@1: #define LUA_MAXINPUT	512
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ lua_readline defines how to show a prompt and then read a line from
rlm@1: @* the standard input.
rlm@1: @@ lua_saveline defines how to "save" a read line in a "history".
rlm@1: @@ lua_freeline defines how to free a line read by lua_readline.
rlm@1: ** CHANGE them if you want to improve this functionality (e.g., by using
rlm@1: ** GNU readline and history facilities).
rlm@1: */
rlm@1: #if defined(LUA_USE_READLINE)
rlm@1: #include <stdio.h>
rlm@1: #include <readline/readline.h>
rlm@1: #include <readline/history.h>
rlm@1: #define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)
rlm@1: #define lua_saveline(L,idx) \
rlm@1: 	if (lua_strlen(L,idx) > 0)  /* non-empty line? */ \
rlm@1: 	  add_history(lua_tostring(L, idx));  /* add it to history */
rlm@1: #define lua_freeline(L,b)	((void)L, free(b))
rlm@1: #else
rlm@1: #define lua_readline(L,b,p)	\
rlm@1: 	((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
rlm@1: 	fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
rlm@1: #define lua_saveline(L,idx)	{ (void)L; (void)idx; }
rlm@1: #define lua_freeline(L,b)	{ (void)L; (void)b; }
rlm@1: #endif
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: /* }================================================================== */
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
rlm@1: @* as a percentage.
rlm@1: ** CHANGE it if you want the GC to run faster or slower (higher values
rlm@1: ** mean larger pauses which mean slower collection.) You can also change
rlm@1: ** this value dynamically.
rlm@1: */
rlm@1: #define LUAI_GCPAUSE	200  /* 200% (wait memory to double before next GC) */
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_GCMUL defines the default speed of garbage collection relative to
rlm@1: @* memory allocation as a percentage.
rlm@1: ** CHANGE it if you want to change the granularity of the garbage
rlm@1: ** collection. (Higher values mean coarser collections. 0 represents
rlm@1: ** infinity, where each step performs a full collection.) You can also
rlm@1: ** change this value dynamically.
rlm@1: */
rlm@1: #define LUAI_GCMUL	200 /* GC runs 'twice the speed' of memory allocation */
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_GETN controls compatibility with old getn behavior.
rlm@1: ** CHANGE it (define it) if you want exact compatibility with the
rlm@1: ** behavior of setn/getn in Lua 5.0.
rlm@1: */
rlm@1: #undef LUA_COMPAT_GETN
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.
rlm@1: ** CHANGE it to undefined as soon as you do not need a global 'loadlib'
rlm@1: ** function (the function is still available as 'package.loadlib').
rlm@1: */
rlm@1: #undef LUA_COMPAT_LOADLIB
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.
rlm@1: ** CHANGE it to undefined as soon as your programs use only '...' to
rlm@1: ** access vararg parameters (instead of the old 'arg' table).
rlm@1: */
rlm@1: #define LUA_COMPAT_VARARG
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
rlm@1: ** CHANGE it to undefined as soon as your programs use 'math.fmod' or
rlm@1: ** the new '%' operator instead of 'math.mod'.
rlm@1: */
rlm@1: #define LUA_COMPAT_MOD
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
rlm@1: @* facility.
rlm@1: ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
rlm@1: ** off the advisory error when nesting [[...]].
rlm@1: */
rlm@1: #define LUA_COMPAT_LSTR		1
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
rlm@1: ** CHANGE it to undefined as soon as you rename 'string.gfind' to
rlm@1: ** 'string.gmatch'.
rlm@1: */
rlm@1: #define LUA_COMPAT_GFIND
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
rlm@1: @* behavior.
rlm@1: ** CHANGE it to undefined as soon as you replace to 'luaL_register'
rlm@1: ** your uses of 'luaL_openlib'
rlm@1: */
rlm@1: #define LUA_COMPAT_OPENLIB
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ luai_apicheck is the assert macro used by the Lua-C API.
rlm@1: ** CHANGE luai_apicheck if you want Lua to perform some checks in the
rlm@1: ** parameters it gets from API calls. This may slow down the interpreter
rlm@1: ** a bit, but may be quite useful when debugging C code that interfaces
rlm@1: ** with Lua. A useful redefinition is to use assert.h.
rlm@1: */
rlm@1: #if defined(LUA_USE_APICHECK)
rlm@1: #include <assert.h>
rlm@1: #define luai_apicheck(L,o)	{ (void)L; assert(o); }
rlm@1: #else
rlm@1: #define luai_apicheck(L,o)	{ (void)L; }
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_BITSINT defines the number of bits in an int.
rlm@1: ** CHANGE here if Lua cannot automatically detect the number of bits of
rlm@1: ** your machine. Probably you do not need to change this.
rlm@1: */
rlm@1: /* avoid overflows in comparison */
rlm@1: #if INT_MAX-20 < 32760
rlm@1: #define LUAI_BITSINT	16
rlm@1: #elif INT_MAX > 2147483640L
rlm@1: /* int has at least 32 bits */
rlm@1: #define LUAI_BITSINT	32
rlm@1: #else
rlm@1: #error "you must define LUA_BITSINT with number of bits in an integer"
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
rlm@1: @@ LUAI_INT32 is an signed integer with at least 32 bits.
rlm@1: @@ LUAI_UMEM is an unsigned integer big enough to count the total
rlm@1: @* memory used by Lua.
rlm@1: @@ LUAI_MEM is a signed integer big enough to count the total memory
rlm@1: @* used by Lua.
rlm@1: ** CHANGE here if for some weird reason the default definitions are not
rlm@1: ** good enough for your machine. (The definitions in the 'else'
rlm@1: ** part always works, but may waste space on machines with 64-bit
rlm@1: ** longs.) Probably you do not need to change this.
rlm@1: */
rlm@1: #if LUAI_BITSINT >= 32
rlm@1: #define LUAI_UINT32	unsigned int
rlm@1: #define LUAI_INT32	int
rlm@1: #define LUAI_MAXINT32	INT_MAX
rlm@1: #define LUAI_UMEM	size_t
rlm@1: #define LUAI_MEM	ptrdiff_t
rlm@1: #else
rlm@1: /* 16-bit ints */
rlm@1: #define LUAI_UINT32	unsigned long
rlm@1: #define LUAI_INT32	long
rlm@1: #define LUAI_MAXINT32	LONG_MAX
rlm@1: #define LUAI_UMEM	unsigned long
rlm@1: #define LUAI_MEM	long
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_MAXCALLS limits the number of nested calls.
rlm@1: ** CHANGE it if you need really deep recursive calls. This limit is
rlm@1: ** arbitrary; its only purpose is to stop infinite recursion before
rlm@1: ** exhausting memory.
rlm@1: */
rlm@1: #define LUAI_MAXCALLS	20000
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
rlm@1: @* can use.
rlm@1: ** CHANGE it if you need lots of (Lua) stack space for your C
rlm@1: ** functions. This limit is arbitrary; its only purpose is to stop C
rlm@1: ** functions to consume unlimited stack space. (must be smaller than
rlm@1: ** -LUA_REGISTRYINDEX)
rlm@1: */
rlm@1: #define LUAI_MAXCSTACK	8000
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: ** {==================================================================
rlm@1: ** CHANGE (to smaller values) the following definitions if your system
rlm@1: ** has a small C stack. (Or you may want to change them to larger
rlm@1: ** values if your system has a large C stack and these limits are
rlm@1: ** too rigid for you.) Some of these constants control the size of
rlm@1: ** stack-allocated arrays used by the compiler or the interpreter, while
rlm@1: ** others limit the maximum number of recursive calls that the compiler
rlm@1: ** or the interpreter can perform. Values too large may cause a C stack
rlm@1: ** overflow for some forms of deep constructs.
rlm@1: ** ===================================================================
rlm@1: */
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and
rlm@1: @* syntactical nested non-terminals in a program.
rlm@1: */
rlm@1: #define LUAI_MAXCCALLS		200
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_MAXVARS is the maximum number of local variables per function
rlm@1: @* (must be smaller than 250).
rlm@1: */
rlm@1: #define LUAI_MAXVARS		200
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function
rlm@1: @* (must be smaller than 250).
rlm@1: */
rlm@1: #define LUAI_MAXUPVALUES	60
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
rlm@1: */
rlm@1: #define LUAL_BUFFERSIZE		BUFSIZ
rlm@1: 
rlm@1: /* }================================================================== */
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: ** {==================================================================
rlm@1: @@ LUA_NUMBER is the type of numbers in Lua.
rlm@1: ** CHANGE the following definitions only if you want to build Lua
rlm@1: ** with a number type different from double. You may also need to
rlm@1: ** change lua_number2int & lua_number2integer.
rlm@1: ** ===================================================================
rlm@1: */
rlm@1: 
rlm@1: #define LUA_NUMBER_DOUBLE
rlm@1: #define LUA_NUMBER	double
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
rlm@1: @* over a number.
rlm@1: */
rlm@1: #define LUAI_UACNUMBER	double
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_NUMBER_SCAN is the format for reading numbers.
rlm@1: @@ LUA_NUMBER_FMT is the format for writing numbers.
rlm@1: @@ lua_number2str converts a number to a string.
rlm@1: @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
rlm@1: @@ lua_str2number converts a string to a number.
rlm@1: */
rlm@1: #define LUA_NUMBER_SCAN		"%lf"
rlm@1: #define LUA_NUMBER_FMT		"%.14g"
rlm@1: #define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))
rlm@1: #define LUAI_MAXNUMBER2STR	32 /* 16 digits, sign, point, and \0 */
rlm@1: #define lua_str2number(s,p)	strtod((s), (p))
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ The luai_num* macros define the primitive operations over numbers.
rlm@1: */
rlm@1: #if defined(LUA_CORE)
rlm@1: #include <math.h>
rlm@1: #define luai_numadd(a,b)	((a)+(b))
rlm@1: #define luai_numsub(a,b)	((a)-(b))
rlm@1: #define luai_nummul(a,b)	((a)*(b))
rlm@1: #define luai_numdiv(a,b)	((a)/(b))
rlm@1: #define luai_nummod(a,b)	((a) - floor((a)/(b))*(b))
rlm@1: #define luai_numpow(a,b)	(pow(a,b))
rlm@1: #define luai_numunm(a)		(-(a))
rlm@1: #define luai_numeq(a,b)		((a)==(b))
rlm@1: #define luai_numlt(a,b)		((a)<(b))
rlm@1: #define luai_numle(a,b)		((a)<=(b))
rlm@1: #define luai_numisnan(a)	(!luai_numeq((a), (a)))
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ lua_number2int is a macro to convert lua_Number to int.
rlm@1: @@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
rlm@1: ** CHANGE them if you know a faster way to convert a lua_Number to
rlm@1: ** int (with any rounding method and without throwing errors) in your
rlm@1: ** system. In Pentium machines, a naive typecast from double to int
rlm@1: ** in C is extremely slow, so any alternative is worth trying.
rlm@1: */
rlm@1: 
rlm@1: /* On a Pentium, resort to a trick */
rlm@1: #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
rlm@1:     (defined(__i386) || defined (_M_IX86) || defined(__i386__))
rlm@1: 
rlm@1: /* On a Microsoft compiler, use assembler */
rlm@1: #if 0//defined(_MSC_VER) // nitsuja: the "using assembly" method doesn't correctly handle integers between 0xFF000000 and and 0xFFFFFFFF, while the other branch does handle it correctly and it's not slower.
rlm@1: 
rlm@1: #define lua_number2int(i,d)   __asm fld d   __asm fistp i
rlm@1: #define lua_number2integer(i,n)		lua_number2int(i, n)
rlm@1: 
rlm@1: /* the next trick should work on any Pentium, but sometimes clashes
rlm@1:    with a DirectX idiosyncrasy */
rlm@1: #else
rlm@1: 
rlm@1: union luai_Cast { double l_d; long l_l; };
rlm@1: #define lua_number2int(i,d) \
rlm@1:   { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
rlm@1: #define lua_number2integer(i,n)		lua_number2int(i, n)
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /* this option always works, but may be slow */
rlm@1: #else
rlm@1: #define lua_number2int(i,d)	((i)=(int)(d))
rlm@1: #define lua_number2integer(i,d)	((i)=(lua_Integer)(d))
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: /* }================================================================== */
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
rlm@1: ** CHANGE it if your system requires alignments larger than double. (For
rlm@1: ** instance, if your system supports long doubles and they must be
rlm@1: ** aligned in 16-byte boundaries, then you should add long double in the
rlm@1: ** union.) Probably you do not need to change this.
rlm@1: */
rlm@1: #define LUAI_USER_ALIGNMENT_T	union { double u; void *s; long l; }
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_THROW/LUAI_TRY define how Lua does exception handling.
rlm@1: ** CHANGE them if you prefer to use longjmp/setjmp even with C++
rlm@1: ** or if want/don't to use _longjmp/_setjmp instead of regular
rlm@1: ** longjmp/setjmp. By default, Lua handles errors with exceptions when
rlm@1: ** compiling as C++ code, with _longjmp/_setjmp when asked to use them,
rlm@1: ** and with longjmp/setjmp otherwise.
rlm@1: */
rlm@1: #if defined(__cplusplus)
rlm@1: /* C++ exceptions */
rlm@1: #define LUAI_THROW(L,c)	throw(c)
rlm@1: #define LUAI_TRY(L,c,a)	try { a } catch(...) \
rlm@1: 	{ if ((c)->status == 0) (c)->status = -1; }
rlm@1: #define luai_jmpbuf	int  /* dummy variable */
rlm@1: 
rlm@1: #elif defined(LUA_USE_ULONGJMP)
rlm@1: /* in Unix, try _longjmp/_setjmp (more efficient) */
rlm@1: #define LUAI_THROW(L,c)	_longjmp((c)->b, 1)
rlm@1: #define LUAI_TRY(L,c,a)	if (_setjmp((c)->b) == 0) { a }
rlm@1: #define luai_jmpbuf	jmp_buf
rlm@1: 
rlm@1: #else
rlm@1: /* default handling with long jumps */
rlm@1: #define LUAI_THROW(L,c)	longjmp((c)->b, 1)
rlm@1: #define LUAI_TRY(L,c,a)	if (setjmp((c)->b) == 0) { a }
rlm@1: #define luai_jmpbuf	jmp_buf
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_MAXCAPTURES is the maximum number of captures that a pattern
rlm@1: @* can do during pattern-matching.
rlm@1: ** CHANGE it if you need more captures. This limit is arbitrary.
rlm@1: */
rlm@1: #define LUA_MAXCAPTURES		32
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ lua_tmpnam is the function that the OS library uses to create a
rlm@1: @* temporary name.
rlm@1: @@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam.
rlm@1: ** CHANGE them if you have an alternative to tmpnam (which is considered
rlm@1: ** insecure) or if you want the original tmpnam anyway.  By default, Lua
rlm@1: ** uses tmpnam except when POSIX is available, where it uses mkstemp.
rlm@1: */
rlm@1: #if defined(loslib_c) || defined(luaall_c)
rlm@1: 
rlm@1: #if defined(LUA_USE_MKSTEMP)
rlm@1: #include <unistd.h>
rlm@1: #define LUA_TMPNAMBUFSIZE	32
rlm@1: #define lua_tmpnam(b,e)	{ \
rlm@1: 	strcpy(b, "/tmp/lua_XXXXXX"); \
rlm@1: 	e = mkstemp(b); \
rlm@1: 	if (e != -1) close(e); \
rlm@1: 	e = (e == -1); }
rlm@1: 
rlm@1: #else
rlm@1: #define LUA_TMPNAMBUFSIZE	L_tmpnam
rlm@1: #define lua_tmpnam(b,e)		{ e = (tmpnam(b) == NULL); }
rlm@1: #endif
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ lua_popen spawns a new process connected to the current one through
rlm@1: @* the file streams.
rlm@1: ** CHANGE it if you have a way to implement it in your system.
rlm@1: */
rlm@1: #if defined(LUA_USE_POPEN)
rlm@1: 
rlm@1: #define lua_popen(L,c,m)	((void)L, fflush(NULL), popen(c,m))
rlm@1: #define lua_pclose(L,file)	((void)L, (pclose(file) != -1))
rlm@1: 
rlm@1: #elif defined(LUA_WIN)
rlm@1: 
rlm@1: #define lua_popen(L,c,m)	((void)L, _popen(c,m))
rlm@1: #define lua_pclose(L,file)	((void)L, (_pclose(file) != -1))
rlm@1: 
rlm@1: #else
rlm@1: 
rlm@1: #define lua_popen(L,c,m)	((void)((void)c, m),  \
rlm@1: 		luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
rlm@1: #define lua_pclose(L,file)		((void)((void)L, file), 0)
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_DL_* define which dynamic-library system Lua should use.
rlm@1: ** CHANGE here if Lua has problems choosing the appropriate
rlm@1: ** dynamic-library system for your platform (either Windows' DLL, Mac's
rlm@1: ** dyld, or Unix's dlopen). If your system is some kind of Unix, there
rlm@1: ** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for
rlm@1: ** it.  To use dlopen you also need to adapt the src/Makefile (probably
rlm@1: ** adding -ldl to the linker options), so Lua does not select it
rlm@1: ** automatically.  (When you change the makefile to add -ldl, you must
rlm@1: ** also add -DLUA_USE_DLOPEN.)
rlm@1: ** If you do not want any kind of dynamic library, undefine all these
rlm@1: ** options.
rlm@1: ** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD.
rlm@1: */
rlm@1: #if defined(LUA_USE_DLOPEN)
rlm@1: #define LUA_DL_DLOPEN
rlm@1: #endif
rlm@1: 
rlm@1: #if defined(LUA_WIN)
rlm@1: #define LUA_DL_DLL
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State
rlm@1: @* (the data goes just *before* the lua_State pointer).
rlm@1: ** CHANGE (define) this if you really need that. This value must be
rlm@1: ** a multiple of the maximum alignment required for your machine.
rlm@1: */
rlm@1: #define LUAI_EXTRASPACE		0
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ luai_userstate* allow user-specific actions on threads.
rlm@1: ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something
rlm@1: ** extra when a thread is created/deleted/resumed/yielded.
rlm@1: */
rlm@1: #define luai_userstateopen(L)		((void)L)
rlm@1: #define luai_userstateclose(L)		((void)L)
rlm@1: #define luai_userstatethread(L,L1)	((void)L)
rlm@1: #define luai_userstatefree(L)		((void)L)
rlm@1: #define luai_userstateresume(L,n)	((void)L)
rlm@1: #define luai_userstateyield(L,n)	((void)L)
rlm@1: 
rlm@1: 
rlm@1: /*
rlm@1: @@ LUA_INTFRMLEN is the length modifier for integer conversions
rlm@1: @* in 'string.format'.
rlm@1: @@ LUA_INTFRM_T is the integer type correspoding to the previous length
rlm@1: @* modifier.
rlm@1: ** CHANGE them if your system supports long long or does not support long.
rlm@1: */
rlm@1: 
rlm@1: #if defined(LUA_USELONGLONG)
rlm@1: 
rlm@1: #define LUA_INTFRMLEN		"ll"
rlm@1: #define LUA_INTFRM_T		long long
rlm@1: 
rlm@1: #else
rlm@1: 
rlm@1: #define LUA_INTFRMLEN		"l"
rlm@1: #define LUA_INTFRM_T		long
rlm@1: 
rlm@1: #endif
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: /* =================================================================== */
rlm@1: 
rlm@1: /*
rlm@1: ** Local configuration. You can use this space to add your redefinitions
rlm@1: ** without modifying the main part of the file.
rlm@1: */
rlm@1: 
rlm@1: 
rlm@1: 
rlm@1: #endif
rlm@1: