.\" $FreeBSD: releng/11.0/lib/libc/sys/sched_yield.2 131504 2004-07-02 23:52:20Z ru $
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.Dd March 12, 1998
.Dt SCHED_YIELD 2
.Os
.Sh NAME
.Nm sched_yield
.Nd yield processor
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In sched.h
.Ft int
.Fn sched_yield void
.Sh DESCRIPTION
The
.Fn sched_yield
system call forces the running process to relinquish the processor until it
again becomes the head of its process list.
It takes no arguments.
.Sh RETURN VALUES
.Rv -std sched_yield
.Sh ERRORS
On failure
.Va errno
will be set to the corresponding value:
.Bl -tag -width Er
.It Bq Er ENOSYS
The system is not configured to support this functionality.
.El
.Sh STANDARDS
The
.Fn sched_yield
system call conforms to
.St -p1003.1b-93 .