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#ifndef _mem_h
#define _mem_h
#include <stddef.h>
#include "val.h"
void *M(void *p, size_t old, size_t new);
#define NEW(t) (t*)M(NULL, 0, sizeof(t))
#define NEW_ARR(t,n) (t*)M(NULL, 0, (n)*sizeof(t))
#define RENEW_ARR(p,t,old,new) (t*)M((p), (old)*sizeof(t), (new)*sizeof(t))
#define NEW_OBJ(t, oty) (t*)alloc_obj(sizeof(t), oty)
#define FREE(p,t) M(p, sizeof(t), 0)
#define FREE_ARR(p,t,old) M(p, (old)*sizeof(t), 0)
Obj *alloc_obj(size_t sz, ObjTy oty);
#endif
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