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/*
** $Id: llimits.h,v 1.63 2005/01/14 14:19:42 roberto Exp $
** 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
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