NAP(S) UNIX System V NAP(S)
Name
nap - suspends execution for a short interval
Syntax
long nap(period)
long period;
Description
The current process is suspended from execution for at least
the number of milliseconds specified by period, or until a
signal is received.
Return Value
On successful completion, a long integer indicating the
number of milliseconds actually slept is returned. If the
process received a signal while napping, the return value
will be -1, and errno will be set to EINTR.
See Also
sleep(S)
Notes
This function is driven by the system clock, which in most
cases has a granularity of tens of milliseconds. This
function must be linked with the linker option -lx.
(printed 6/20/89)