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96 lines
2.8 KiB
Markdown
96 lines
2.8 KiB
Markdown
# Rink
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[](https://travis-ci.org/tiffany352/rink-rs)
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[](https://codecov.io/gh/tiffany352/rink-rs)
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[](https://crates.io/crates/rink)
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[](https://crates.io/crates/rink)
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Rink is a unit-aware calculator. It can be used for physics and
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engineering calculations, as well as dimensionality analysis.
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Rink supports most systems of measurements including SI, CGS, natural,
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international customary, US customary, UK customary, as well as
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historical measurements. In addition, Rink supports currency
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conversions.
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Unique features:
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- High-precision bignum rational arithmetic
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- Detailed error messages
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- Shows SI physical quantities
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- Finds applicable SI derived units automatically
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- Helps with dimensionality analysis, such as by offering unit
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factorizations and finding units for quantities.
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- Open source
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- First-class support for non-absolute temperature scales
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## [Manual](https://github.com/tiffany352/rink-rs/wiki/Rink-Manual)
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Describes (hopefully) everything you need to know to use Rink's
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expression language.
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## [Web Interface: rinkcalc.app](https://rinkcalc.app)
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Rink is available via a web interface in addition to the terminal-based
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interface. Useful for doing calculations on mobile.
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## Install
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The most common version of Rink is the command line interface `rink`.
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| Package Manager | Command |
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| --------------- | -------------------- |
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| Cargo | `cargo install rink` |
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| Pacman | `pacman -S rink` |
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| Nix | `nix-env -i rink` |
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## Examples
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```
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> kWh/year -> W
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0.1140795 watt (power)
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```
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```
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> W -> J
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Conformance error: 1 watt (power) != 1 joule (energy)
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Suggestions: multiply left side by time, multiply right side by frequency
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```
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```
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> gallon gasoline -> kWh
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approx. 36.63388 kWh (energy)
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```
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```
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> googol^100
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1.0e10000 (dimensionless)
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```
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## Library Usage
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[](https://docs.rs/rink-core/latest/rink_core/)
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```toml
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[dependencies]
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rink-core = "0.6"
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```
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## License
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Rink source code is licensed under the Mozilla Public License, version 2. See [LICENSE-MPL](./LICENSE-MPL) for details.
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The data file `definitions.units` is licensed under the GNU General
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Public License, version 3. See [LICENSE-GPL](./LICENSE-GPL) for details.
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### Contribution
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Contribution guide can be found on the wiki: https://github.com/tiffany352/rink-rs/wiki#contribution-guide
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Unless you explicitly state otherwise, any contribution intentionally
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submitted for inclusion in the work will grant the rights lined out in
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the MPL, including larger works with secondary licenses.
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## Changelog
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See here: https://github.com/tiffany352/rink-rs/releases
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