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