PTR
#define PTRCONST PTR
extern PTR xmalloc PARAMS ((size_t));
extern PTR xrealloc PARAMS ((PTR, size_t));
extern PTR xcalloc PARAMS ((size_t, size_t));
#define MISALIGNMENT(PTR, TYPE) ((addr_t)(PTR) & (sizeof(TYPE) - 1))
#define MISALIGNMENT(PTR, TYPE) ((addr_t)(PTR) & (sizeof(TYPE) - 1))
#define MISALIGNMENT(PTR, TYPE) ((addr_t)(PTR) & (sizeof(TYPE) - 1))