SSCANF (man3p)
sscanf — convert formatted input
sscanf — convert formatted input
getlogin, getlogin_r — get login name
fputwc — put a wide-character code on a stream
pthread_rwlockattr_init — initialize the read-write lock attributes object
isatty — test for a terminal device
ldiv, lldiv — compute quotient and remainder of a long division
cacos, cacosf, cacosl — complex arc cosine functions
carg, cargf, cargl — complex argument functions
posix_spawnattr_getschedparam, posix_spawnattr_setschedparam — get and set the spawn-schedparam attribute of a spawn attributes object (ADVANCED REALTIME)
isgreaterequal — test if x is greater than or equal to y