math-cos

Computes the cosine of a number.

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Readme

Cosine
!NPM versionnpm-imagenpm-url !Build Statusbuild-imagebuild-url !Coverage Statuscoverage-imagecoverage-url !Dependenciesdependencies-imagedependencies-url
Computes the cosinecosine of a number.

Installation

$ npm install math-cos

Usage

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

cos( x )

Computes the cosinecosine of a number (in radians).
var val = cos( 0 );
// returns 1

val = cos( Math.PI/4 );
// returns ~0.707

val = cos( -Math.PI/6 );
// returns ~0.866

Examples

var linspace = require( 'compute-linspace' );
var cos = require( 'math-cos' );

var x = linspace( 0, 2*Math.PI, 100 );
var i;

for ( i = 0; i < x.length; i++ ) {
	console.log( cos( x[ i ] ) );
}

To run the example code from the top-level application directory,
$ node ./examples/index.js

Tests

Unit

This repository uses tapetape 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 Istanbulistanbul 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 Testlingtestling 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.iocompute-io Authors.