NEXTAFTER (man3p)
nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl — next representable floating-point number
nextafter, nextafterf, nextafterl, nexttoward, nexttowardf, nexttowardl — next representable floating-point number
pthread_mutexattr_setrobust — get and set the mutex robust attribute
sigrelse, sigset — signal management
times — get process and waited-for child process times
signbit — test sign
aio_cancel — cancel an asynchronous I/O request
getgrnam, getgrnam_r — search group database for a name
msync — synchronize memory with physical storage
pthread_setschedparam — dynamic thread scheduling parameters access (REALTIME THREADS)
feraiseexcept — raise floating-point exception