#ifndef _STDLIB_H
#define _STDLIB_H

typedef unsigned int size_t;

void  *malloc(size_t n);
void  *calloc(size_t nmemb, size_t size);
void  *realloc(void *ptr, size_t n);
void   free(void *p);

int    abs(int n);
long   labs(long n);
int    atoi(const char *s);

void   exit(int code) __attribute__((noreturn));
void   abort(void)    __attribute__((noreturn));

typedef void (*__atexit_fn)(void);
int    atexit(__atexit_fn fn);

#define EXIT_SUCCESS 0
#define EXIT_FAILURE 1

#endif