mirror of https://github.com/lua/lua
configuration for numerical types through only one #define for
each type
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48
luaconf.h
48
luaconf.h
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@ -1,5 +1,5 @@
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/*
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** $Id: luaconf.h,v 1.245 2015/02/05 17:15:33 roberto Exp roberto $
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** $Id: luaconf.h,v 1.246 2015/02/28 19:22:31 roberto Exp roberto $
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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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@ -96,10 +96,8 @@
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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_INT_TYPE defines the type for Lua integers.
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@@ LUA_REAL_TYPE defines 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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@ -107,30 +105,40 @@
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** compliant with C99, which may not have support for 'long long').
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*/
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/* predefined options for LUA_INT_TYPE */
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#define LUA_INT_INT 1
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#define LUA_INT_LONG 2
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#define LUA_INT_LONGLONG 3
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/* predefined options for LUA_REAL_TYPE */
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#define LUA_REAL_FLOAT 1
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#define LUA_REAL_DOUBLE 2
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#define LUA_REAL_LONGDOUBLE 3
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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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#define LUA_INT_TYPE LUA_INT_INT
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#else /* otherwise use 'long' */
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#define LUA_INT_LONG
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#define LUA_INT_TYPE LUA_INT_LONG
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#endif
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#define LUA_REAL_FLOAT
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#define LUA_REAL_TYPE 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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#define LUA_INT_TYPE LUA_INT_LONG
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#define LUA_REAL_TYPE 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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#define LUA_INT_TYPE LUA_INT_LONGLONG
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#define LUA_REAL_TYPE LUA_REAL_DOUBLE
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#endif /* } */
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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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#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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@@ 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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#if LUA_REAL_TYPE == LUA_REAL_FLOAT /* { single float */
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#define LUA_NUMBER float
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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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#elif LUA_REAL_TYPE == LUA_REAL_LONGDOUBLE /* }{ long double */
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#define LUA_NUMBER long double
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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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#elif LUA_REAL_TYPE == LUA_REAL_DOUBLE /* }{ double */
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#define LUA_NUMBER double
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#define lua_str2number(s,p) strtod((s), (p))
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#else /* }{ */
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#else /* }{ */
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#error "numeric real type not defined"
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/* now the variable definitions */
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#if defined(LUA_INT_INT) /* { int */
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#if LUA_INT_TYPE == 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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#elif LUA_INT_TYPE == 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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#elif LUA_INT_TYPE == 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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