type div_t
element div_t int quot
element div_t int rem
type ldiv_t
element ldiv_t long quot
element ldiv_t long rem

macro EXIT_FAILURE
macro EXIT_SUCCESS 0

macro NULL
constant RAND_MAX >= 32767
macro MB_CUR_MAX

#if defined XOPEN2K || defined XOPEN2K8 || defined POSIX2008
type lldiv_t
element lldiv_t {long long} quot
element lldiv_t {long long} rem
#endif
type size_t
type wchar_t

#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX
constant WNOHANG
constant WUNTRACED

macro WEXITSTATUS
macro WIFEXITED
macro WIFSIGNALED
macro WIFSTOPPED
macro WSTOPSIG
macro WTERMSIG
#endif

#if !defined ISO && !defined XPG3 && !defined XPG4 && !defined UNIX98 && !defined POSIX
function void _Exit (int)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function long a64l (const char*)
#endif
function void abort (void)
function int abs (int)
#if defined ISO11
function {void *} aligned_alloc (size_t, size_t)
#endif
function int atexit (void(*)(void))
#if defined ISO11
function int at_quick_exit (void (*) (void))
#endif
function double atof (const char*)
function int atoi (const char*)
function {long int} atol (const char*)
#if !defined ISO && !defined POSIX && !defined XPG3 && !defined XPG4 && !defined UNIX98
function {long long} atoll (const char*)
#endif
function {void*} bsearch (const void*, const void*, size_t, size_t, int(*)(const void*, const void*))
function {void*} calloc (size_t, size_t)
function div_t div (int, int)
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function double drand48 (void)
#endif
#if defined XPG3 || defined XPG4 || defined UNIX98 || defined XOPEN2K
function {char*} ecvt (double, int, int*, int*)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function double erand48 (unsigned short int[3])
#endif
function void exit (int)
#if defined XPG3 || defined XPG4 || defined UNIX98 || defined XOPEN2K
function {char*} fcvt (double, int, int*, int*)
#endif
function void free (void*)
#if defined XPG3 || defined XPG4 || defined UNIX98 || defined XOPEN2K
function {char*} gcvt (double, int, char*)
#endif
function {char*} getenv (const char*)
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX
function int getsubopt (char**, char *const*, char**)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function int grantpt (int)
function {char*} initstate (unsigned int, char*, size_t)
function {long int} jrand48 (unsigned short int[3])
function {char*} l64a (long)
#endif
function {long int} labs (long int)
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function void lcong48 (unsigned short int[7])
#endif
function ldiv_t ldiv (long int, long int)
#if !defined ISO && !defined POSIX && !defined XPG3 && !defined XPG4 && !defined UNIX98
function {long long} llabs (long long)
function lldiv_t lldiv (long long, long long)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function {long int} lrand48 (void)
#endif
function {void*} malloc (size_t)
function int mblen (const char*, size_t)
function size_t mbstowcs (wchar_t*, const char*, size_t)
function int mbtowc (wchar_t*, const char*, size_t)
#if defined XOPEN2K8 || defined POSIX2008
function {char*} mkdtemp (char*)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined XOPEN2K8 && !defined POSIX2008
function {char*} mktemp (char*)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX
function int mkstemp (char*)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function {long int} mrand48 (void)
function {long int} nrand48 (unsigned short int[3])
#endif
#if defined XOPEN2K || defined XOPEN2K8 || defined POSIX2008
function int posix_memalign (void**, size_t, size_t)
#endif
#if defined XOPEN2K || defined XOPEN2K8
function int posix_openpt (int)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function {char*} ptsname (int)
function int putenv (char*)
#endif
function void qsort (void*, size_t, size_t, int(*)(const void*, const void*))
#if defined ISO11
function void quick_exit (int)
#endif
function int rand (void)
#if defined POSIX || defined UNIX98 || defined XOPEN2K || defined XOPEN2K8 || defined POSIX2008
function int rand_r (unsigned int*)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function long random (void)
#endif
function {void*} realloc (void*, size_t)
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function {char*} realpath (const char*, char*)
function {unsigned short int*} seed48 (unsigned short int[3])
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11
function int setenv (const char*, const char*, int)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function void setkey (const char*)
function {char*} setstate (char*)
#endif
function void srand (unsigned int)
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function void srand48 (long int)
function void srandom (unsigned)
#endif
function double strtod (const char*, char**)
function {long int} strtol (const char*, char**, int)
function {unsigned long int} strtoul (const char*, char**, int)
function int system (const char*)
#if defined XPG3 || defined XPG4 || defined UNIX98
function int ttyslot (void)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX && !defined POSIX2008
function int unlockpt (int)
#endif
#if !defined ISO && !defined ISO99 && !defined ISO11 && !defined POSIX
function int unsetenv (const char*)
#endif
#if defined XPG3 || defined XPG4 || defined UNIX98
function {void*} valloc (size_t)
#endif
function size_t wcstombs (char*, const wchar_t*, size_t)
function int wctomb (char*, wchar_t)

allow-header stddef.h
allow-header limits.h
allow-header math.h
allow-header sys/wait.h

allow str*
allow *_t