#ifndef lmem_h

#define lmem_h

#include <stddef.h>

#include "llimits.h"

#include "lua.h"

#define luaM_error(L) luaD_throw(L, LUA_ERRMEM)

#define luaM_testsize(n,e) \

(sizeof(n) >= sizeof(size_t) && cast_sizet((n)) + 1 > MAX_SIZET/(e))

#define luaM_checksize(L,n,e) \

(luaM_testsize(n,e) ? luaM_toobig(L) : cast_void(0))

#define luaM_limitN(n,t) \

((cast_sizet(n) <= MAX_SIZET/sizeof(t)) ? (n) : \

cast_int((MAX_SIZET/sizeof(t))))

#define luaM_reallocvchar(L,b,on,n) \

cast_charp(luaM_saferealloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char)))

#define luaM_freemem(L, b, s) luaM_free_(L, (b), (s))

#define luaM_free(L, b) luaM_free_(L, (b), sizeof(*(b)))

#define luaM_freearray(L, b, n) luaM_free_(L, (b), (n)*sizeof(*(b)))

#define luaM_new(L,t) cast(t*, luaM_malloc_(L, sizeof(t), 0))

#define luaM_newvector(L,n,t) \

cast(t*, luaM_malloc_(L, cast_sizet(n)*sizeof(t), 0))

#define luaM_newvectorchecked(L,n,t) \

(luaM_checksize(L,n,sizeof(t)), luaM_newvector(L,n,t))

#define luaM_newobject(L,tag,s) luaM_malloc_(L, (s), tag)

#define luaM_newblock(L, size) luaM_newvector(L, size, char)

#define luaM_growvector(L,v,nelems,size,t,limit,e) \

((v)=cast(t *, luaM_growaux_(L,v,nelems,&(size),sizeof(t), \

luaM_limitN(limit,t),e)))

#define luaM_reallocvector(L, v,oldn,n,t) \

(cast(t *, luaM_realloc_(L, v, cast_sizet(oldn) * sizeof(t), \

cast_sizet(n) * sizeof(t))))

#define luaM_shrinkvector(L,v,size,fs,t) \

((v)=cast(t *, luaM_shrinkvector_(L, v, &(size), fs, sizeof(t))))

LUAI_FUNC l_noret luaM_toobig (lua_State *L);

LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,

size_t size);

LUAI_FUNC void *luaM_saferealloc_ (lua_State *L, void *block, size_t oldsize,

size_t size);

LUAI_FUNC void luaM_free_ (lua_State *L, void *block, size_t osize);

LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int nelems,

int *size, unsigned size_elem, int limit,

const char *what);

LUAI_FUNC void *luaM_shrinkvector_ (lua_State *L, void *block, int *nelem,

int final_n, unsigned size_elem);

LUAI_FUNC void *luaM_malloc_ (lua_State *L, size_t size, int tag);