738 lines
20 KiB
C
738 lines
20 KiB
C
/*
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** $Id: luaconf.h,v 1.238 2014/12/29 13:27:55 roberto Exp $
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** Configuration file for Lua
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** See Copyright Notice in lua.h
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*/
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#ifndef luaconf_h
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#define luaconf_h
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#include <limits.h>
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#include <stddef.h>
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/*
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** ===================================================================
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** Search for "@@" to find all configurable definitions.
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** ===================================================================
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*/
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/*
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** {====================================================================
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** System Configuration: macros to adapt (if needed) Lua to some
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** particular platform, for instance compiling it with 32-bit numbers or
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** restricting it to C89.
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** =====================================================================
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*/
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/*
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@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
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** can also define LUA_32BITS in the make file, but changing here you
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** ensure that all software connected to Lua will be compiled with the
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** same configuration.
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*/
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/* #define LUA_32BITS */
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/*
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@@ LUA_USE_C89 controls the use of non-ISO-C89 features.
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** Define it if you want Lua to avoid the use of a few C99 features
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** or Windows-specific features on Windows.
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*/
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/* #define LUA_USE_C89 */
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/*
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** By default, Lua on Windows use (some) specific Windows features
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*/
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#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
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#define LUA_USE_WINDOWS /* enable goodies for regular Windows */
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#endif
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#if defined(LUA_USE_WINDOWS)
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#define LUA_DL_DLL /* enable support for DLL */
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#define LUA_USE_C89 /* broadly, Windows is C89 */
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#endif
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#if defined(LUA_USE_LINUX)
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#define LUA_USE_POSIX
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#define LUA_USE_DLOPEN /* needs an extra library: -ldl */
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#define LUA_USE_READLINE /* needs some extra libraries */
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#endif
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#if defined(LUA_USE_MACOSX)
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#define LUA_USE_POSIX
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#define LUA_USE_DLOPEN /* MacOS does not need -ldl */
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#define LUA_USE_READLINE /* needs an extra library: -lreadline */
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#endif
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/*
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@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
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** C89 ('long' and 'double'); Windows always has '__int64', so it does
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** not need to use this case.
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*/
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#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
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#define LUA_C89_NUMBERS
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#endif
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/*
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@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
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*/
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/* avoid undefined shifts */
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#if ((INT_MAX >> 15) >> 15) >= 1
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#define LUAI_BITSINT 32
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#else
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/* 'int' always must have at least 16 bits */
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#define LUAI_BITSINT 16
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#endif
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/*
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@@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines the type for
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** Lua integers.
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@@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines
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** the type for Lua floats.
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** Lua should work fine with any mix of these options (if supported
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** by your C compiler). The usual configurations are 64-bit integers
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** and 'double' (the default), 32-bit integers and 'float' (for
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** restricted platforms), and 'long'/'double' (for C compilers not
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** compliant with C99, which may not have support for 'long long').
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*/
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#if defined(LUA_32BITS) /* { */
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/*
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** 32-bit integers and 'float'
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*/
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#if LUAI_BITSINT >= 32 /* use 'int' if big enough */
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#define LUA_INT_INT
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#else /* otherwise use 'long' */
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#define LUA_INT_LONG
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#endif
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#define LUA_REAL_FLOAT
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#elif defined(LUA_C89_NUMBERS) /* }{ */
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/*
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** largest types available for C89 ('long' and 'double')
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*/
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#define LUA_INT_LONG
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#define LUA_REAL_DOUBLE
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#else /* }{ */
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/*
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** default configuration for 64-bit Lua ('long long' and 'double')
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*/
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#define LUA_INT_LONGLONG
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#define LUA_REAL_DOUBLE
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#endif /* } */
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/* }================================================================== */
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/*
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** {==================================================================
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** Configuration for Paths.
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** ===================================================================
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*/
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/*
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@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
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** Lua libraries.
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@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
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** C libraries.
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** CHANGE them if your machine has a non-conventional directory
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** hierarchy or if you want to install your libraries in
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** non-conventional directories.
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*/
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#define LUA_VDIR LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
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#if defined(_WIN32) /* { */
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/*
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** In Windows, any exclamation mark ('!') in the path is replaced by the
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** path of the directory of the executable file of the current process.
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*/
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#define LUA_LDIR "!\\lua\\"
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#define LUA_CDIR "!\\"
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#define LUA_SHRDIR "!\\..\\share\\lua\\" LUA_VDIR "\\"
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#define LUA_PATH_DEFAULT \
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LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
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LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua;" \
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LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
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".\\?.lua;" ".\\?\\init.lua"
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#define LUA_CPATH_DEFAULT \
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LUA_CDIR"?.dll;" \
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LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
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LUA_CDIR"loadall.dll;" ".\\?.dll;" \
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LUA_CDIR"?53.dll;" ".\\?53.dll"
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#else /* }{ */
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#define LUA_ROOT "/usr/local/"
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#define LUA_LDIR LUA_ROOT "share/lua/" LUA_VDIR "/"
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#define LUA_CDIR LUA_ROOT "lib/lua/" LUA_VDIR "/"
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#define LUA_PATH_DEFAULT \
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LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
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LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua;" \
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"./?.lua;" "./?/init.lua"
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#define LUA_CPATH_DEFAULT \
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LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so;" \
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LUA_CDIR"lib?53.so;" "./lib?53.so"
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#endif /* } */
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/*
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@@ LUA_DIRSEP is the directory separator (for submodules).
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** CHANGE it if your machine does not use "/" as the directory separator
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** and is not Windows. (On Windows Lua automatically uses "\".)
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*/
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#if defined(_WIN32)
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#define LUA_DIRSEP "\\"
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#else
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#define LUA_DIRSEP "/"
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#endif
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/* }================================================================== */
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/*
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** {==================================================================
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** Marks for exported symbols in the C code
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** ===================================================================
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*/
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/*
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@@ LUA_API is a mark for all core API functions.
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@@ LUALIB_API is a mark for all auxiliary library functions.
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@@ LUAMOD_API is a mark for all standard library opening functions.
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** CHANGE them if you need to define those functions in some special way.
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** For instance, if you want to create one Windows DLL with the core and
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** the libraries, you may want to use the following definition (define
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** LUA_BUILD_AS_DLL to get it).
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*/
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#if defined(LUA_BUILD_AS_DLL) /* { */
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#if defined(LUA_CORE) || defined(LUA_LIB) /* { */
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#define LUA_API __declspec(dllexport)
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#else /* }{ */
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#define LUA_API __declspec(dllimport)
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#endif /* } */
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#else /* }{ */
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#define LUA_API extern
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#endif /* } */
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/* more often than not the libs go together with the core */
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#define LUALIB_API LUA_API
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#define LUAMOD_API LUALIB_API
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/*
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@@ LUAI_FUNC is a mark for all extern functions that are not to be
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** exported to outside modules.
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@@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
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** that are not to be exported to outside modules (LUAI_DDEF for
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** definitions and LUAI_DDEC for declarations).
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** CHANGE them if you need to mark them in some special way. Elf/gcc
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** (versions 3.2 and later) mark them as "hidden" to optimize access
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** when Lua is compiled as a shared library. Not all elf targets support
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** this attribute. Unfortunately, gcc does not offer a way to check
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** whether the target offers that support, and those without support
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** give a warning about it. To avoid these warnings, change to the
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** default definition.
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*/
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#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
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defined(__ELF__) /* { */
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#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
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#else /* }{ */
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#define LUAI_FUNC extern
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#endif /* } */
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#define LUAI_DDEC LUAI_FUNC
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#define LUAI_DDEF /* empty */
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/* }================================================================== */
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/*
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** {==================================================================
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** Compatibility with previous versions
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** ===================================================================
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*/
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/*
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@@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
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@@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
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** You can define it to get all options, or change specific options
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** to fit your specific needs.
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*/
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#if defined(LUA_COMPAT_5_2) /* { */
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/*
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@@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
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** functions in the mathematical library.
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*/
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#define LUA_COMPAT_MATHLIB
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/*
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@@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
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*/
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#define LUA_COMPAT_BITLIB
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/*
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@@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
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*/
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#define LUA_COMPAT_IPAIRS
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/*
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@@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
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** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
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** luaL_checkint, luaL_checklong, etc.)
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*/
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#define LUA_COMPAT_APIINTCASTS
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/*
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@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
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@@ a float mark ('.0').
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** This macro is not on by default even in compatibility mode,
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** because this is not really an incompatibility.
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*/
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/* #define LUA_COMPAT_FLOATSTRING */
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#endif /* } */
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#if defined(LUA_COMPAT_5_1) /* { */
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/*
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@@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
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** You can replace it with 'table.unpack'.
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*/
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#define LUA_COMPAT_UNPACK
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/*
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@@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
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** You can replace it with 'package.searchers'.
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*/
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#define LUA_COMPAT_LOADERS
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/*
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@@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
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** You can call your C function directly (with light C functions).
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*/
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#define lua_cpcall(L,f,u) \
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(lua_pushcfunction(L, (f)), \
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lua_pushlightuserdata(L,(u)), \
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lua_pcall(L,1,0,0))
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/*
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@@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
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** You can rewrite 'log10(x)' as 'log(x, 10)'.
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*/
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#define LUA_COMPAT_LOG10
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/*
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@@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
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** library. You can rewrite 'loadstring(s)' as 'load(s)'.
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*/
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#define LUA_COMPAT_LOADSTRING
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/*
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@@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
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*/
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#define LUA_COMPAT_MAXN
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/*
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@@ The following macros supply trivial compatibility for some
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** changes in the API. The macros themselves document how to
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** change your code to avoid using them.
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*/
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#define lua_strlen(L,i) lua_rawlen(L, (i))
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#define lua_objlen(L,i) lua_rawlen(L, (i))
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#define lua_equal(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPEQ)
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#define lua_lessthan(L,idx1,idx2) lua_compare(L,(idx1),(idx2),LUA_OPLT)
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/*
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@@ LUA_COMPAT_MODULE controls compatibility with previous
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** module functions 'module' (Lua) and 'luaL_register' (C).
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*/
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#define LUA_COMPAT_MODULE
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#endif /* } */
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/* }================================================================== */
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/*
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** {==================================================================
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** Configuration for Numbers.
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** Change these definitions if no predefined LUA_REAL_* / LUA_INT_*
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** satisfy your needs.
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** ===================================================================
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*/
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/*
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@@ LUA_NUMBER is the floating-point type used by Lua.
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**
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@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
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@@ over a floating number.
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**
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@@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
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@@ LUA_NUMBER_FMT is the format for writing floats.
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@@ lua_number2str converts a float to a string.
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**
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@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
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**
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@@ lua_str2number converts a decimal numeric string to a number.
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*/
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#if defined(LUA_REAL_FLOAT) /* { single float */
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#define LUA_NUMBER float
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#define LUAI_UACNUMBER double
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#define LUA_NUMBER_FRMLEN ""
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#define LUA_NUMBER_FMT "%.7g"
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#define l_mathop(op) op##f
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#define lua_str2number(s,p) strtof((s), (p))
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#elif defined(LUA_REAL_LONGDOUBLE) /* }{ long double */
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#define LUA_NUMBER long double
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#define LUAI_UACNUMBER long double
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#define LUA_NUMBER_FRMLEN "L"
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#define LUA_NUMBER_FMT "%.19Lg"
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#define l_mathop(op) op##l
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#define lua_str2number(s,p) strtold((s), (p))
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#elif defined(LUA_REAL_DOUBLE) /* }{ double */
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#define LUA_NUMBER double
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#define LUAI_UACNUMBER double
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#define LUA_NUMBER_FRMLEN ""
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#define LUA_NUMBER_FMT "%.14g"
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#define l_mathop(op) op
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#define lua_str2number(s,p) strtod((s), (p))
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#else /* }{ */
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#error "numeric real type not defined"
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#endif /* } */
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#define l_floor(x) (l_mathop(floor)(x))
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#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
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/*
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@@ lua_numbertointeger converts a float number to an integer, or
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** returns 0 if float is not within the range of a lua_Integer.
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** (The range comparisons are tricky because of rounding. The tests
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** here assume a two-complement representation, where MININTEGER always
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** has an exact representation as a float; MAXINTEGER may not have one,
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** and therefore its conversion to float may have an ill-defined value.)
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*/
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#define lua_numbertointeger(n,p) \
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((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
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(n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
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(*(p) = (LUA_INTEGER)(n), 1))
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/*
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@@ The luai_num* macros define the primitive operations over numbers.
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** They should work for any size of floating numbers.
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*/
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/* the following operations need the math library */
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#if defined(lobject_c) || defined(lvm_c)
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#include <math.h>
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/* floor division (defined as 'floor(a/b)') */
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#define luai_numidiv(L,a,b) ((void)L, l_mathop(floor)(luai_numdiv(L,a,b)))
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/*
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** module: defined as 'a - floor(a/b)*b'; the previous definition gives
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** NaN when 'b' is huge, but the result should be 'a'. 'fmod' gives the
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** result of 'a - trunc(a/b)*b', and therefore must be corrected when
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** 'trunc(a/b) ~= floor(a/b)'. That happens when the division has a
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** non-integer negative result, which is equivalent to the test below
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*/
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#define luai_nummod(L,a,b,m) \
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{ (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); }
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/* exponentiation */
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#define luai_numpow(L,a,b) ((void)L, l_mathop(pow)(a,b))
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#endif
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/* these are quite standard operations */
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#if defined(LUA_CORE)
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#define luai_numadd(L,a,b) ((a)+(b))
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#define luai_numsub(L,a,b) ((a)-(b))
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#define luai_nummul(L,a,b) ((a)*(b))
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#define luai_numdiv(L,a,b) ((a)/(b))
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#define luai_numunm(L,a) (-(a))
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#define luai_numeq(a,b) ((a)==(b))
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#define luai_numlt(a,b) ((a)<(b))
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#define luai_numle(a,b) ((a)<=(b))
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#define luai_numisnan(a) (!luai_numeq((a), (a)))
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#endif
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/*
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@@ LUA_INTEGER is the integer type used by Lua.
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**
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@@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
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**
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@@ LUAI_UACINT is the result of an 'usual argument conversion'
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@@ over a lUA_INTEGER.
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@@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
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@@ LUA_INTEGER_FMT is the format for writing integers.
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@@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
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@@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
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@@ lua_integer2str converts an integer to a string.
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*/
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/* The following definitions are good for most cases here */
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#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
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#define lua_integer2str(s,n) sprintf((s), LUA_INTEGER_FMT, (n))
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#define LUAI_UACINT LUA_INTEGER
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/*
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** use LUAI_UACINT here to avoid problems with promotions (which
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** can turn a comparison between unsigneds into a signed comparison)
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*/
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#define LUA_UNSIGNED unsigned LUAI_UACINT
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/* now the variable definitions */
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#if defined(LUA_INT_INT) /* { int */
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#define LUA_INTEGER int
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#define LUA_INTEGER_FRMLEN ""
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#define LUA_MAXINTEGER INT_MAX
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#define LUA_MININTEGER INT_MIN
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#elif defined(LUA_INT_LONG) /* }{ long */
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#define LUA_INTEGER long
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#define LUA_INTEGER_FRMLEN "l"
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#define LUA_MAXINTEGER LONG_MAX
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#define LUA_MININTEGER LONG_MIN
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#elif defined(LUA_INT_LONGLONG) /* }{ long long */
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#if defined(LLONG_MAX) /* { */
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/* use ISO C99 stuff */
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#define LUA_INTEGER long long
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#define LUA_INTEGER_FRMLEN "ll"
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#define LUA_MAXINTEGER LLONG_MAX
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#define LUA_MININTEGER LLONG_MIN
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#elif defined(LUA_USE_WINDOWS) /* }{ */
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/* in Windows, can use specific Windows types */
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#define LUA_INTEGER __int64
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#define LUA_INTEGER_FRMLEN "I64"
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#define LUA_MAXINTEGER _I64_MAX
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#define LUA_MININTEGER _I64_MIN
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#else /* }{ */
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#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
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or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
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#endif /* } */
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#else /* }{ */
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#error "numeric integer type not defined"
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#endif /* } */
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/* }================================================================== */
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/*
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** {==================================================================
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** Dependencies with C99
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** ===================================================================
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*/
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/*
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@@ lua_strx2number converts an hexadecimal numeric string to a number.
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** In C99, 'strtod' does both conversions. Otherwise, you can
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** leave 'lua_strx2number' undefined and Lua will provide its own
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** implementation.
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*/
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#if !defined(LUA_USE_C89)
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#define lua_strx2number(s,p) lua_str2number(s,p)
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#endif
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/*
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@@ LUA_USE_AFORMAT allows '%a'/'%A' specifiers in 'string.format'
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** Enable it if the C function 'printf' supports these specifiers.
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** (C99 demands it and Windows also supports it.)
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*/
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#if !defined(LUA_USE_C89) || defined(LUA_USE_WINDOWS)
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#define LUA_USE_AFORMAT
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#endif
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/*
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** 'strtof' and 'opf' variants for math functions are not valid in
|
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** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
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** availability of these variants. ('math.h' is already included in
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** all files that use these macros.)
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*/
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#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
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#undef l_mathop /* variants not available */
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#undef lua_str2number
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#define l_mathop(op) (lua_Number)op /* no variant */
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#define lua_str2number(s,p) ((lua_Number)strtod((s), (p)))
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#endif
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/*
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@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
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** functions. It must be a numerical type; Lua will use 'intptr_t' if
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** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
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** 'intptr_t' in C89)
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*/
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#define LUA_KCONTEXT ptrdiff_t
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#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
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__STDC_VERSION__ >= 199901L
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#include <stdint.h>
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#if defined (INTPTR_MAX) /* even in C99 this type is optional */
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#undef LUA_KCONTEXT
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#define LUA_KCONTEXT intptr_t
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#endif
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#endif
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/* }================================================================== */
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/*
|
|
** {==================================================================
|
|
** Macros that affect the API and must be stable (that is, must be the
|
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** same when you compile Lua and when you compile code that links to
|
|
** Lua). You probably do not want/need to change them.
|
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** =====================================================================
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*/
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/*
|
|
@@ LUAI_MAXSTACK limits the size of the Lua stack.
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** CHANGE it if you need a different limit. This limit is arbitrary;
|
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** its only purpose is to stop Lua from consuming unlimited stack
|
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** space (and to reserve some numbers for pseudo-indices).
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*/
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#if LUAI_BITSINT >= 32
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#define LUAI_MAXSTACK 1000000
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#else
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#define LUAI_MAXSTACK 15000
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#endif
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/* reserve some space for error handling */
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#define LUAI_FIRSTPSEUDOIDX (-LUAI_MAXSTACK - 1000)
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/*
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|
@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
|
|
** a Lua state with very fast access.
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** CHANGE it if you need a different size.
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*/
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#define LUA_EXTRASPACE (sizeof(void *))
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/*
|
|
@@ LUA_IDSIZE gives the maximum size for the description of the source
|
|
@@ of a function in debug information.
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** CHANGE it if you want a different size.
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|
*/
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#define LUA_IDSIZE 60
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/*
|
|
@@ 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.)
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*/
|
|
#define LUAI_MAXSHORTLEN 40
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|
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/*
|
|
@@ 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 ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
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/* }================================================================== */
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|
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/*
|
|
@@ 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")
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/* =================================================================== */
|
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|
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/*
|
|
** Local configuration. You can use this space to add your redefinitions
|
|
** without modifying the main part of the file.
|
|
*/
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#endif
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