.. SPDX-License-Identifier: CC-BY-SA-4.0

.. Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)

Introduction
============

The clock manager provides support for time of day
and other time related capabilities.  The directives provided by
the clock manager are:

- :ref:`rtems_clock_set`

- :ref:`rtems_clock_get_tod`

- :ref:`rtems_clock_get_tod_timeval`

- :ref:`rtems_clock_get_seconds_since_epoch`

- :ref:`rtems_clock_get_ticks_per_second`

- :ref:`rtems_clock_get_ticks_since_boot`

- :ref:`rtems_clock_tick_later`

- :ref:`rtems_clock_tick_later_usec`

- :ref:`rtems_clock_tick_before`

- :ref:`rtems_clock_get_uptime`

- :ref:`rtems_clock_get_uptime_timeval`

- :ref:`rtems_clock_get_uptime_seconds`

- :ref:`rtems_clock_get_uptime_nanoseconds`