[@fav/arith.reduce][repo-url] [![NPM][npm-img]][npm-url] [![MIT License][mit-img]][mit-url] [![Build Status][travis-img]][travis-url] [![Build Status][appveyor-img]][appveyor-url] [![Coverage status][coverage-img]][coverage-url]

Reduces a number for accurate arithmetics.

> "fav" is an abbreviation of "favorite" and also the acronym of "for all versions".
> This package is intended to support all Node.js versions and many browsers as possible.
> At least, this package supports Node.js >= v0.10 and major Web browsers: Chrome, Firefox, IE11, Edge, Vivaldi and Safari.

Install

To install from npm:

``sh
$ npm install --save @fav/arith.number @fav/arith.reduce
`

NOTE: npm < 2.7.0 does not support scoped package, but old version Node.js supports it. So when you use such older npm, you should download this package from [github.com][repo-url], and move it in node_modules/@fav/arith.reduce/ directory manually.

Usage

For Node.js:

`js
var ArithNumber = require('@fav/arith.number');
var reduce = require('@fav/arith.reduce');

var num1 = new ArithNumber(123, 45, 1); // => { numerator: 123, denominator: 45, exponent: 1 }

var num2 = reduce(num1); // => { numerator: 82, denominator: 3, exponent: 1 }
var num3 = num1.reduce(); // => { numerator: 82, denominator: 3, exponent: 1 }
`

For Web browsers:

`html



`

API

$3

Reduces an ArithNumber object which consists of three integer: numerator, denominator, exponent and of which value is ( numerator / denominator ) * 10^exponent.

This function reduces to get a possibly minimal denominator with decreasing exponent. For example, (9 / 6) is reduced to not (3 / 2) but (15 / 1) * 10^-1.

#### Parameters:

| Parameter | Type | Description |
|:------------|:-----------:|:-----------------------------------------|
| arithNumber | ArithNumber | An ArithNumber object to be reduced. |

#### Returns:

A new ArithNumber object which was reduced.

Type: ArithNumber

$3

This package attaches reduce` function to ArithNumber's prototype as its method.

This method reduces the value of ArithNumber object itself and returns a new ArithNumber object having this reduced value.

#### Returns:

A new ArithNumber object which was reduced.

Type: ArithNumber

Checked

$3

| Platform | 11 |
|:---------:|:------:|
| macOS |◯|
| Windows10 |◯|
| Linux |◯|

$3

| Platform | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|:---------:|:------:|:------:|:------:|:------:|:------:|:------:|:------:|
| macOS |◯|◯|◯|◯|◯|◯|◯|
| Windows10 |◯|◯|◯|◯|◯|◯|◯|
| Linux |◯|◯|◯|◯|◯|◯|◯|

$3

| Platform | 1 | 2 | 3 |
|:---------:|:------:|:------:|:------:|
| macOS |◯|◯|◯|
| Windows10 |◯|◯|◯|
| Linux |◯|◯|◯|

$3

| Platform | 0.8 | 0.9 | 0.10 | 0.11 | 0.12 |
|:---------:|:------:|:------:|:------:|:------:|:------:|
| macOS |◯|◯|◯|◯|◯|
| Windows10 |◯|◯|◯|◯|◯|
| Linux |◯|◯|◯|◯|◯|

$3

| Platform | Chrome | Firefox | Vivaldi | Safari | Edge | IE11 |
|:---------:|:------:|:-------:|:-------:|:------:|:------:|:------:|
| macOS |◯|◯ |◯ |◯| -- | -- |
| Windows10 |◯|◯ |◯ | -- |◯|◯|
| Linux |◯|◯ |◯ | -- | -- | -- |

License

Copyright (C) 2018 Takayuki Sato

This program is free software under [MIT][mit-url] License.
See the file LICENSE in this distribution for more details.

[repo-url]: https://github.com/sttk/fav-arith.reduce/
[npm-img]: https://img.shields.io/badge/npm-v0.1.2-blue.svg
[npm-url]: https://www.npmjs.com/package/@fav/arith.reduce
[mit-img]: https://img.shields.io/badge/license-MIT-green.svg
[mit-url]: https://opensource.org/licenses/MIT
[travis-img]: https://travis-ci.org/sttk/fav-arith.reduce.svg?branch=master
[travis-url]: https://travis-ci.org/sttk/fav-arith.reduce
[appveyor-img]: https://ci.appveyor.com/api/projects/status/github/sttk/fav-arith.reduce?branch=master&svg=true
[appveyor-url]: https://ci.appveyor.com/project/sttk/fav-arith-reduce
[coverage-img]: https://coveralls.io/repos/github/sttk/fav-arith.reduce/badge.svg?branch=master
[coverage-url]: https://coveralls.io/github/sttk/fav-arith.reduce?branch=master