nc 0.9.7

Access system calls directly
Documentation 
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/// Yield the processor.
///
/// # Examples
///
/// ```
/// let ret = unsafe { nc::sched_yield() };
/// assert!(ret.is_ok());
/// ```
pub unsafe fn sched_yield() -> Result<(), Errno> {
    syscall0(SYS_SCHED_YIELD).map(drop)
}