micromath 2.1.0

Embedded-friendly math library featuring fast floating point approximations (with small code size) for common arithmetic operations, trigonometry, 2D/3D vector types, statistical analysis, and quaternions. Optimizes for performance and small code size at the cost of precision.
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# Changelog
All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## 2.1.0 (2023-10-31)
### Added
- Accessors to quaternion elements ([#89])
- Quaternion -> Euler conversion ([#90])
- Method for normalizing a quaternion ([#91])
- Method to get the quaternion which is the smallest rotation between two vectors ([#94])
- `recip`, `mul_add` and `signum` ([#100])

[#89]: https://github.com/tarcieri/micromath/pull/89
[#90]: https://github.com/tarcieri/micromath/pull/90
[#91]: https://github.com/tarcieri/micromath/pull/91
[#94]: https://github.com/tarcieri/micromath/pull/94
[#100]: https://github.com/tarcieri/micromath/pull/100

## 2.0.0 (2021-05-15)
### Added
- `Vector` subtraction support ([#71])
- `F32` newtype ([#72], [#75])
- `num-traits` support ([#80])
- `Quaternion::dot` and `::inv` ([#81])
- `Vector3d` ops for `Quaternion` ([#82])
- `Quaternion::magnitude`, `::scale`, `::to_array`, and `::IDENTITY` ([#83])
- `Quaternion::axis_angle` ([#84])
- `Quaternion::new` ([#85])

### Changed
- Refactor `Vector` types ([#69])
- MSRV 1.47+ ([#75])
- Make `Quaternion` opaque and module private ([#70], [#85])

### Fixed
- `acos()` behavior for zero/negative ([#79])

[#69]: https://github.com/tarcieri/micromath/pull/69
[#70]: https://github.com/tarcieri/micromath/pull/70
[#71]: https://github.com/tarcieri/micromath/pull/71
[#72]: https://github.com/tarcieri/micromath/pull/72
[#75]: https://github.com/tarcieri/micromath/pull/75
[#79]: https://github.com/tarcieri/micromath/pull/79
[#80]: https://github.com/tarcieri/micromath/pull/80
[#81]: https://github.com/tarcieri/micromath/pull/81
[#82]: https://github.com/tarcieri/micromath/pull/82
[#83]: https://github.com/tarcieri/micromath/pull/83
[#84]: https://github.com/tarcieri/micromath/pull/84
[#85]: https://github.com/tarcieri/micromath/pull/85

## 1.1.1 (2021-03-27)
### Added
- `doc_cfg` ([#64])

[#64]: https://github.com/tarcieri/micromath/pull/64

## 1.1.0 (2020-09-30)
### Added
- `powi` support ([#53])

### Changed
- Bump `generic-array` dependency to v0.14; MSRV 1.36+ ([#54])

[#54]: https://github.com/tarcieri/micromath/pull/54
[#53]: https://github.com/tarcieri/micromath/pull/53

## 1.0.1 (2020-06-12)
### Added
- Support for `powf` with negative bases ([#51])

[#51]: https://github.com/tarcieri/micromath/pull/51

## 1.0.0 (2019-12-02)
- Initial 1.0 release! 🎉 (otherwise unchanged)

## 0.5.1 (2019-11-27)
- Cargo.toml: Add mathematics category ([#45])

[#45]: https://github.com/tarcieri/micromath/pull/45

## 0.5.0 (2019-11-13)
- Remove default cargo features ([#42])
- Add `asin`, `acos`, and `hypot` ([#39])

[#42]: https://github.com/tarcieri/micromath/pull/42
[#39]: https://github.com/tarcieri/micromath/pull/39

## 0.4.1 (2019-10-08)
- Implement `F32Ext::round` ([#37])

[#37]: https://github.com/tarcieri/micromath/pull/37

## 0.4.0 (2019-10-02)
- Add `powf`, `exp`, `log10`, `log2`, `log`, `ln`, `trunc`, `fract`, `copysign` ([#35])

[#35]: https://github.com/tarcieri/micromath/pull/35

## 0.3.1 (2019-05-11)
- Rust 1.31.0 support ([#33])

[#33]: https://github.com/tarcieri/micromath/pull/33

## 0.3.0 (2019-05-04)
- statistics: Add Trim trait for statistical outlier culling iterators ([#29])
- Quaternions ([#28])
- f32ext: fast `inv()` approximation ([#27])
- Improve documentation throughout the library ([#25], [#26])

[#29]: https://github.com/tarcieri/micromath/pull/29
[#28]: https://github.com/tarcieri/micromath/pull/28
[#27]: https://github.com/tarcieri/micromath/pull/27
[#26]: https://github.com/tarcieri/micromath/pull/26
[#25]: https://github.com/tarcieri/micromath/pull/25

## 0.2.2 (2019-05-04)
- Add `i32` and `u32` vectors ([#23])

[#23]: https://github.com/tarcieri/micromath/pull/23

## 0.2.1 (2019-05-03)
- Add `html_logo_url` and square icon ([#20])
- `README.md`: Update links to use 'develop' branch ([#19])

[#20]: https://github.com/tarcieri/micromath/pull/20
[#19]: https://github.com/tarcieri/micromath/pull/19

## 0.2.0 (2019-05-03)
- `tan(x)` ([#17])
- `invsqrt(x)` ([#16])
- `cos(x)` and `sin(x)` ([#15])
- `ceil(x)` and `floor(x)` ([#14])
- Update to `generic-array` v0.13 ([#12])

[#17]: https://github.com/tarcieri/micromath/pull/17
[#16]: https://github.com/tarcieri/micromath/pull/16
[#15]: https://github.com/tarcieri/micromath/pull/15
[#14]: https://github.com/tarcieri/micromath/pull/14
[#12]: https://github.com/tarcieri/micromath/pull/12

## 0.1.0 (2019-05-03)
- Initial release