mirror of
https://github.com/lua/lua.git
synced 2024-12-12 03:23:28 +08:00
95 lines
1.6 KiB
C
95 lines
1.6 KiB
C
/*
|
|
** $Id: llimits.h,v 1.60 2004/09/10 17:30:46 roberto Exp roberto $
|
|
** Limits, basic types, and some other `installation-dependent' definitions
|
|
** See Copyright Notice in lua.h
|
|
*/
|
|
|
|
#ifndef llimits_h
|
|
#define llimits_h
|
|
|
|
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
|
|
|
|
#include "lua.h"
|
|
|
|
|
|
|
|
typedef LUA_UINT32 lu_int32;
|
|
|
|
typedef LU_MEM lu_mem;
|
|
|
|
typedef L_MEM l_mem;
|
|
|
|
|
|
|
|
/* chars used as small naturals (so that `char' is reserved for characters) */
|
|
typedef unsigned char lu_byte;
|
|
|
|
|
|
#define MAX_SIZET ((size_t)(~(size_t)0)-2)
|
|
|
|
#define MAX_LUMEM ((lu_mem)(~(lu_mem)0)-2)
|
|
|
|
|
|
#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */
|
|
|
|
/*
|
|
** conversion of pointer to integer
|
|
** this is for hashing only; there is no problem if the integer
|
|
** cannot hold the whole pointer value
|
|
*/
|
|
#define IntPoint(p) ((unsigned int)(lu_mem)(p))
|
|
|
|
|
|
|
|
/* type to ensure maximum alignment */
|
|
typedef LUSER_ALIGNMENT_T L_Umaxalign;
|
|
|
|
|
|
/* result of a `usual argument conversion' over lua_Number */
|
|
typedef LUA_UACNUMBER l_uacNumber;
|
|
|
|
|
|
#define check_exp(c,e) (lua_assert(c), (e))
|
|
|
|
|
|
#ifndef UNUSED
|
|
#define UNUSED(x) ((void)(x)) /* to avoid warnings */
|
|
#endif
|
|
|
|
|
|
#ifndef cast
|
|
#define cast(t, exp) ((t)(exp))
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
** type for virtual-machine instructions
|
|
** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
|
|
*/
|
|
typedef lu_int32 Instruction;
|
|
|
|
|
|
|
|
/* maximum stack for a Lua function */
|
|
#define MAXSTACK 250
|
|
|
|
|
|
|
|
/* minimum size for the string table (must be power of 2) */
|
|
#ifndef MINSTRTABSIZE
|
|
#define MINSTRTABSIZE 32
|
|
#endif
|
|
|
|
|
|
/* minimum size for string buffer */
|
|
#ifndef LUA_MINBUFFER
|
|
#define LUA_MINBUFFER 32
|
|
#endif
|
|
|
|
|
|
#endif
|