#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);
long long llabs(long long n);
int    atoi(const char *s);
long   atol(const char *s);
long long atoll(const char *s);
double atof(const char *s);

typedef struct { int       quot, rem; } div_t;
typedef struct { long      quot, rem; } ldiv_t;
typedef struct { long long quot, rem; } lldiv_t;
div_t   div  (int       n, int       d);
ldiv_t  ldiv (long      n, long      d);
lldiv_t lldiv(long long n, long long d);

long           strtol  (const char *nptr, char **endptr, int base);
unsigned long  strtoul (const char *nptr, char **endptr, int base);
long long      strtoll (const char *nptr, char **endptr, int base);
unsigned long long strtoull(const char *nptr, char **endptr, int base);
double         strtod  (const char *nptr, char **endptr);
float          strtof  (const char *nptr, char **endptr);

typedef int (*__cmp_fn)(const void *, const void *);
void   qsort  (void *base, size_t nmemb, size_t size, __cmp_fn cmp);
void  *bsearch(const void *key, const void *base, size_t nmemb,
               size_t size, __cmp_fn cmp);

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

#define RAND_MAX 0x7FFF
int    rand(void);
void   srand(unsigned int seed);

#endif