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using predefined limits (instead of computing min/max values for each

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type) + some comments
This commit is contained in:
Roberto Ierusalimschy 2014-04-14 13:58:54 -03:00
parent 675530c4d8
commit f767f29d87
1 changed files with 28 additions and 16 deletions
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44
luaconf.h
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@ -1,5 +1,5 @@
/*
** $Id: luaconf.h,v 1.196 2014/04/11 19:53:45 roberto Exp roberto $
** $Id: luaconf.h,v 1.197 2014/04/12 14:51:53 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
@ -21,16 +21,15 @@
/*
** ===================================================================
@@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines size for
@@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines type for
@* Lua integers;
@@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines size for
@* Lua floats.
@@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines
@* type for Lua floats.
**
** These definitions set the numeric types for Lua. Lua should work
** fine with 32-bit or 64-bit integers mixed with 32-bit or 64-bit
** floats. The usual configurations are 64-bit integers and floats (the
** default) and 32-bit integers and floats (Small Lua, for restricted
** hardware).
** 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 hardware).
** =====================================================================
*/
#define LUA_INT_LONGLONG
@ -547,10 +546,6 @@
#define LUA_INTEGER_FMT "%" LUA_INTEGER_FRMLEN "d"
#define lua_integer2str(s,n) sprintf((s), LUA_INTEGER_FMT, (n))
#define LUA_MAXUNSIGNED (~(LUA_UNSIGNED)0)
#define LUA_MAXINTEGER ((LUA_INTEGER)(LUA_MAXUNSIGNED >> 1))
#define LUA_MININTEGER ((LUA_INTEGER)~(LUA_MAXUNSIGNED >> 1))
#define LUAI_UACINT LUA_INTEGER
/*
@ -567,11 +562,19 @@
#define LUA_INTEGER int
#define LUA_INTEGER_FRMLEN ""
#define LUA_MAXUNSIGNED UINT_MAX
#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_MAXUNSIGNED ULONG_MAX
#define LUA_MAXINTEGER LONG_MAX
#define LUA_MININTEGER LONG_MIN
#elif defined(LUA_INT_LONGLONG) /* }{ long long */
#if defined(_WIN32)
@ -582,19 +585,28 @@
#define LUA_INTEGER_FRMLEN "ll"
#endif
#define LUA_MAXUNSIGNED ULLONG_MAX
#define LUA_MAXINTEGER LLONG_MAX
#define LUA_MININTEGER LLONG_MIN
#elif defined(LUA_INT_SHORT) /* }{ short int; for tests */
#define LUA_INTEGER short int
#define LUA_INTEGER_FRMLEN ""
#undef LUA_MAXUNSIGNED
#undef LUAI_UACINT
#undef LUA_INTEGER_SCAN
#define LUA_MAXUNSIGNED ((LUA_UNSIGNED)USHRT_MAX)
#define LUA_MAXINTEGER SHRT_MAX
#define LUA_MININTEGER SHRT_MIN
#define LUA_MAXUNSIGNED 0xffffu
#undef LUAI_UACINT
#define LUAI_UACINT int
#undef LUA_INTEGER_SCAN
#define LUA_INTEGER_SCAN "%hd"
#undef LUAI_MAXSTACK
#define LUAI_MAXSTACK 15000
#else /* }{ */
#error "numeric integer type not defined"