linfnorm

Computes the infinity norm (Chebyshev/supremum norm) of an array of values.

Installation

$ npm install compute-linfnorm

For use in the browser, use browserify.

Usage

To use the module,

var linfnorm = require( 'compute-linfnorm' );

linfnorm( arr )

Computes the maximum norm (infinity/Chebyshev/supremum/uniform norm) of an array.

var data = [ 5, -20, 3, 0, 19 ];

var max = linfnorm( data );
// returns 20

Examples

var linfnorm = require( 'compute-linfnorm' );

var data = new Array( 100 );
for ( var i = 0; i < data.length; i++ ) {
	data[ i ] = Math.random()*100 - 50;
}

console.log( linfnorm( data ) );

To run the example code from the top-level application directory,

$ node ./examples/index.js

Tests

Unit

Unit tests use the Mocha test framework with Chai assertions. To run the tests, execute the following command in the top-level application directory:

$ make test

All new feature development should have corresponding unit tests to validate correct functionality.

Test Coverage

This repository uses Istanbul as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

$ make test-cov

Istanbul creates a ./reports/coverage directory. To access an HTML version of the report,

$ make view-cov

License

MIT license.

Copyright

Copyright © 2014. Athan Reines.