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Christopher Friedt bd83df1552 libc: minimal: add qsort to the minimal libc
This change implements qsort() for the minimal libc via Heapsort.

Heapsort time complexity is O(n log(n)) in the best, average,
and worst cases. It is O(1) in space complexity (i.e. sorts
in-place) and is iterative rather than recursive. Heapsort is
not stable (i.e. does not preserve order of identical elements).

On cortex-m0, this implementation occupies ~240 bytes.

Fixes #28896

Signed-off-by: Christopher Friedt <chrisfriedt@gmail.com>
2021-11-10 07:00:36 -05:00
.buildkite
.github ci: doc-publish: specify artifacts run_id 2021-11-09 14:50:27 -05:00
arch arch/x86_64: Add hook for CONFIG_SCHED_THREAD_USAGE accounting in ISRs 2021-11-08 21:32:20 -05:00
boards boards: stm32U585 disco kit enables the ADC1 peripheral 2021-11-09 15:59:23 -06:00
cmake cmake: CMake linker script generator pass handling 2021-11-08 20:45:07 +01:00
doc doc: Add __must_check to PREDEFINED 2021-11-09 22:21:23 +02:00
drivers drivers: spi_nrfx_spim: workaround for nRF52832 errata anomaly 58 2021-11-09 20:04:45 -05:00
dts drivers: spi_nrfx_spim: workaround for nRF52832 errata anomaly 58 2021-11-09 20:04:45 -05:00
include libc: minimal: add qsort to the minimal libc 2021-11-10 07:00:36 -05:00
kernel kernel/sched: Separate idle from app thread stats in THREAD_USAGE 2021-11-08 21:32:20 -05:00
lib libc: minimal: add qsort to the minimal libc 2021-11-10 07:00:36 -05:00
misc
modules modules: tfm: Split trusted-firmware-m repository 2021-11-01 11:20:06 -04:00
samples libc: minimal: add qsort to the minimal libc 2021-11-10 07:00:36 -05:00
scripts scripts: runner: Introduce gd32isp flash runner 2021-11-07 05:20:50 -05:00
share
soc soc: stm32wb: Implement ble shutdown sequence 2021-11-09 05:49:23 -05:00
submanifests
subsys Bluetooth: Disconnect L2CAP channel if peer sent too much data 2021-11-09 19:58:42 -05:00
tests tests: timer: fix improper test identifier 2021-11-09 22:42:12 -05:00
.checkpatch.conf checkpatch: Ignore IS_ENABLED_CONFIG warnings 2021-10-18 08:28:01 -04:00
.clang-format
.codecov.yml
.editorconfig
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore gitignore: ignore macos DS_Store files 2021-11-03 16:14:20 -04:00
.gitlint
.mailmap
.uncrustify.cfg uncrustify: force a single EOF newline 2021-11-03 16:14:20 -04:00
CMakeLists.txt cmake: CMakeLists.txt cleanup for kobj_hash 2021-11-08 20:45:07 +01:00
CODE_OF_CONDUCT.md
CODEOWNERS scripts: runner: Introduce gd32isp flash runner 2021-11-07 05:20:50 -05:00
CONTRIBUTING.rst
Kconfig
Kconfig.zephyr kconfig: add support for warnings when using experimental features 2021-10-22 13:59:21 +02:00
LICENSE
MAINTAINERS.yml MAINTAINERS.yml: Add SebastianBoe as build collaborator 2021-11-09 09:36:40 -05:00
README.rst
VERSION
version.h.in
west.yml samples: psa_crypto: Create Certificate Signing Request 2021-11-09 19:57:28 -05:00
zephyr-env.cmd
zephyr-env.sh

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/_static/images/logo-readme.png">
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
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The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM Cortex-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, and a large number of
`supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI
  (buildkite) nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/getting_started/index.html#asking-for-help