1.0.2 • Published 10 years ago

math-abs v1.0.2

Weekly downloads
1,851
License
MIT
Repository
github
Last release
10 years ago

Absolute Value

NPM version Build Status Coverage Status Dependencies

Computes an absolute value.

The absolute value is defined as

Installation

$ npm install math-abs

Usage

var abs = require( 'math-abs' );

abs( x )

Computes an absolute value.

var val = abs( -1 );
// returns 1

val = abs( 2 );
// returns 2

val = abs( 0 );
// returns 0

val = abs( -0 );
// returns 0

Examples

var abs = require( 'math-abs' );

var rand;
var sign;
var i;
for ( i = 0; i < 100; i++ ) {
	rand = Math.round( Math.random() * 100 ) - 50;
	sign = Math.random();
	if ( sign < 0.5 ) {
		sign = -1;
	} else {
		sign = 1;
	}
	console.log( 'Before: %d. After: %d.', rand, abs( rand ) );
}

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

$ node ./examples/index.js

Tests

Unit

This repository uses tape for unit tests. 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

Browser Support

This repository uses Testling for browser testing. To run the tests in a (headless) local web browser, execute the following command in the top-level application directory:

$ make test-browsers

To view the tests in a local web browser,

$ make view-browser-tests

License

MIT license.

Copyright

Copyright © 2016. The Compute.io Authors.