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89 lines
1.9 KiB
Markdown
89 lines
1.9 KiB
Markdown
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# Change Log FastTrig
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All notable changes to this project will be documented in this file.
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The format is based on [Keep a Changelog](http://keepachangelog.com/)
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and this project adheres to [Semantic Versioning](http://semver.org/).
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## [0.1.11] - 2022-11-02
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- add changelog.md
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- add rp2040 to build-CI
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- moved version info from readme.md to changelog
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- no functional changes
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## [0.1.10 2022-04-15
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- fix #12
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- split .h in .h and .cpp Needed in case of more complex projects.
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## [0.1.9] - 2021-12-18
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- update Arduino-CI, badges,
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- update library.json
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- minor edits
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## [0.1.8] - 2021-08-10
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- made % 180 conditional in itan() => performance gain
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- added icot() cotangent.
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## [0.1.7] - 2021-04-23
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-fix for PlatformIO
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## [0.1.6] - 2020-12-23
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- Arduino-CI + unit tests
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## [0.1.5] - 2020-09-11
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- fixed optimize
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- new table
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- added iasin() and iacos()
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In (0.1.4) an error was found in the optimize algorithm, so for 0.1.5
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it was ran again and accuracy improved for **isin()** and **icos()**.
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However **itan()** lost a (smaller) bit.
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The gain outweighs the loss and so new table is kept.
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Performance has not changed.
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An initial version of a reverse lookup for **iasin(val)** and **iacos(val)**
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is added, as it uses the same **isintable16\[\]** interpolation table.
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There is no **atan()** or **atan2()** replacement.
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## [0.1.4] - 2020-09-08
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- rewrite itan()
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- cleanup
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- examples
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The library (0.1.4) provides an **itan()** which improved accuracy
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upon the (0.1.3) version and performance for the ESP32.
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Performance on AVR (UNO) is still an issue, accuracy is OK.
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## [0.1.3] - 2020-09-07
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- initial release.
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## [0.1.2] - 2020-09-06
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- optimize 16 bit table with example sketch
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## [0.1.1] - 2020-08-30
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- refactor
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- create a library out of it.
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- itan() approximation is bad.
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_eons passed_
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----
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## [0.1.02] - 2011-08-20
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- added interpolation
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## [0.1.01] - 2011-08-18
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- improved tables a bit
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- changed param to float
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## [0.1.00] - 2011-08-18
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- initial version
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