Math interval formatter

Parse math interval object to string.

Install

$ npm install --save math-interval-formatter

Usage

format(interval, options)

var format = require('math-interval-formatter');

var interval = {
	from: {
		value: -Math.PI,
		included: true
	},
	to: {
		value: Infinity,
		included: false
	}
};

format(interval);
//=> '[-3.142,Infinity)'

format(interval, {
	format: 'pretty',
	infiniteEndpoints: 'math',
	numberFormat: '+0.0000'
});
//=> '[3.1416, +∞)'

See tests for more details.

Available options

• format

  • 'default' //=> '[-10,10]'
  • 'pretty' //=> '[-10, 10]'
  • 'interval' //=> '[-10..10]'

• excludedEndpoints

  • 'parenthesis' //=> '(-10,10)'
  • 'reversed' //=> ']-10,10['

• infiniteEndpoints

  • 'default' //=> '[0,Infinity)'
  • 'none' //=> '[0,)'
  • 'math' //=> '[0,∞)'

• numberFormat // default '0.[000]'

  • See available formats in simple-number-formatter repo

License

MIT © Dmitry Semigradsky