See merge request !1

Add a small subsection about fork in README.
Fix a few links so they point to the markdown docs
and not to the website (no website will be deployed
for the fork).
Add simple gitlab issue and merge request templates.

See merge request !1

* README: add cross-compile
---------
Signed-off-by: Zhang fei <zhangfei@iscas.ac.cn>

Just checking that it is working.

Ubuntu-24.04 GH-runner still has a buggy version of gcc 12.
Therefore we jump to gcc 13.

Documentation for these runners here https://gitlab.arm.com/tooling/gha-runner-docs
Note that only SLEEF upstream repo is allowed to use these runners.

Integrate runners via strategy.matrix.os, in order to facilitate customisation
of step (e.g. config) based on runner label.

Install OpenSSL since tester3 is enforced.
New runners do not seem to come with openssl or cmake pre-installed.

Use SVE enabled instances (c7g)
Use 2xlarge instances so tests run slightly faster without compromising on availability.

Remove aarch64 from cross build and tests (on Linux).
And update documentation/README.

The website is now rendered to html using https://just-the-docs.com/
template, thus providing navigation menu and search engine.
Sections' landing pages are rendered in Github UI (section/README.md)
and on website (section/index.html).
Links to other pages work in both Github and website thanks to permalinks.
Move images to img/ and sources to src/

Disable manual trigger to avoid spams.
Only run slow tests (like test-cross) on post-commit.
Display status of main GHA tests in README's test matrix,
so test that may fail in post-commit appear clearly in docs.

Update/fix website.
And a link in markdown doc.
Give more useful cmake command, e.g. static/shared libs.
Fix documented uninstall commands.

Mark macOS x86_64 and aarch64 as Tested.

Mark i686 and aarch32 as N/A because these ABI are deprecated.

Correct "MacOS" to "macOS".

Subdivided Windows LLVM into llvm-gnu and llvm-msvc to distinguish between *-w64-mingw32 (aka *-pc-windows-gnu) and *-pc-windows-msvc targets.

Updated Windows AArch64 from N/A to Not tested in CI.

Update supported environment now that quad, dft and inline headers are in.
Fixes #524

Copyright year and some build instructions.

AArch64 tests build with llvm cross-compiler on linux, run and pass.

* Move sources to deployed directory docs/.
* Sync sources with shibatch/shibatch.github.io
* Update copyright line in README and html.

And minor fixes on README and website.

These can already be visualised in source or on github.

Add a table for supported compilers and OS-es.
Add badges linked to CI, License and SLEEF paper, Spack package, ...
Update install and build instructions.

Keep toolchain files and rename them.

This patch adds a dispatcher for 128-bit wide vector functions in the quad library.

This patch adds a dispatcher for the scalar functions in the quad library.

This patch adds quad-precision ldexp, ilogb, fma and hypot.

Co-authored-by: shibatch <shibatch.sf.net@gmail.com>

This patch updates copyright notice.

Co-authored-by: shibatch <shibatch.sf.net@gmail.com>

This patch replaces Horner method which was used to evaluate polynomials with Estrin's method( https://en.wikipedia.org/wiki/Estrin%27s_scheme ) that allows more parallel computations with out-of-order execution.
This patch also introducing a new reduction method to tan.
With this patch, mainly computation for double-precision functions becomes faster, and the effect is like a few percent to 20 percent. For example, the ratio between execution time of the following functions before and after applying this patch is shown below.

Sleef_atan2d4_u35 : 1.21
Sleef_powd4_u10 : 1.17
Sleef_sind4_u35 : 1.10
Sleef_tand4_u10 : 1.04
Sleef_tand4_u35 : 1.17

* This patch updates the documentation.

* It also changes minor version numbers in DLL, and update files related to debian packaging.

* SPECIFICATION file is removed. This was now redundant since the accuracy specification is described in the xhtml files.

* Entered the release date.

* [CI] Add build status from travis-ci.

* [travis] Use gcc-6 compiler.

* [travis] Use gcc-7 o enable AVX512 compilation.

* [travis] Revert to gcc-6.

* [travis] Disable 128-bit float for the build.

* [travis] Adapt build system to travis environment.

The tester.c sources have been modified to pass the shell environemt
variable to the executable that is invoked with `execvpe`.

A new target "test" have been added to the root Makefile to run the
"iut" tests.

* [travis] Use -lrt for linking clock_gettime.

* [travis] Add -ltr for old gcc.

* [travis] Add a missing -ltr for iutavx build.

* [travis] Fix compilation failure.

It is -lrt, not -ltr...

* [travis] Use travis default behaviour.

* [travis] Revert ENABLEFLOAT128 support for gcc >= 5.

The following patch enables SLEEF to use the Advanced SIMD vector
extension for the AArch64 execution mode of the A64 instruction set on
ARMv8 (AArch64 AdvSIMD hereafter).

The suffix "advsimd" is consistently used across the sources and the
build and test systems to identify this extension.

The patch have been tested on native hardware for single and double
precision for the following cases:

* iut: scalar
* iutadvsimd: AArch64 AdvSIMD
* iutcevext: clang vector extentions on AArch64

The patch includes also the following minor changes:

* the copyright notice in the README file has been changed to assign
  copyright to other contributors;
* libsleef-dft has been temporarly disabled for AArch64 builds;
* set some shell scripts permission to executable.

Suggestion to add affirmative statement regarding license for contributions.  
You may also want to add "and contributors" for the copyright notice or some other way to acknowledge copyright is held by multiple people or organizations.