Rink

A unit conversion tool in Rust. The name is a subset of frink, another unit conversion tool, to indicate that this tool implements a subset of frink's features.

Select features:

High-precision bignum rational arithmetic
Detailed error messages
IRC bot

Install

cargo install rink

Examples

> kWh/year -> W
approx. 0.1140795 W (power)

> W -> J
Conformance error
   Left side: 1 watt (power)
  Right side: 1 joule (energy)
  Suggestion: multiply left side by time
              multiply right side by frequency

> gallon gasoline -> kWh
approx. 36.63388 kWh (energy)

> googol^100
1.0e10000 (dimensionless)

Library Usage

Add this to your Cargo.toml:

[dependencies]
rink = "0.3"

and this to your crate root:

extern crate rink;

License

Rink source code is licensed under the Mozilla Public License, version 2. See LICENSE-MPL for details.

The data file definitions.units is licensed under the GNU General Public License, version 3. See LICENSE-GPL for details.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work will grant the rights lined out in the MPL, including larger works with secondary licenses.

Changelog

0.3.0

Use GNU units database instead of frink's
Relicense under MPL
Web interface
Multi-server IRC in bot
Date arithmetic
Exact fraction printing
Sandboxing
Add temperature scale suffixes
Factorize query
Function call syntax
Errors on division by zero
Errors on unimplemented imaginary roots
Inline unit definitions
Bot name prefix is optional in private message
Fix associativity of addition
Rename commonly confused units
Unit lists (hr;min;sec) in conversions
"Units for" query
Show unit definitions when they are the only term
Make / lower precedence than multiplication, add | which is higher precedence
Unit tests
Output token symbols instead of internal names
Canonicalize output units
Try to find a matching derived unit for queries

0.2.0

Errors for division by zero
Better conversion (->) output
Bignum arithmetic
API docs
IRC bot
Addition

0.1.1

Search for units.txt in standard directories
Rustyline

0.1.0

Initial release

2.3 KiB Raw Blame History