.\" Copyright (c) 2022 by Alejandro Colomar .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" .\" .TH itimerspec 3type (date) "Linux man-pages (unreleased)" .SH NAME itimerspec \- interval for a timer with nanosecond precision .SH LIBRARY Standard C library .RI ( libc ) .SH SYNOPSIS .EX .B #include .P .B struct itimerspec { .BR " struct timespec it_interval;" " /* Interval for periodic timer */" .BR " struct timespec it_value;" " /* Initial expiration */" .B }; .EE .SH DESCRIPTION Describes the initial expiration of a timer, and its interval, in seconds and nanoseconds. .SH STANDARDS POSIX.1-2008. .SH HISTORY POSIX.1-2001. .SH SEE ALSO .BR timerfd_create (2), .BR timer_settime (2), .BR timespec (3type)