math-ln

Natural logarithm.

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Natural Logarithm
!NPM versionnpm-imagenpm-url !Build Statusbuild-imagebuild-url !Coverage Statuscoverage-imagecoverage-url !Dependenciesdependencies-imagedependencies-url
Computes the natural logarithmnatural-logarithm.

Installation

$ npm install math-ln

Usage

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

ln( x )

Computes the natural logarithmnatural-logarithm.
var val = ln( 4 );
// returns ~1.386

val = ln( 0 );
// returns -infinity

val = ln( Number.POSITIVE_INFINITY );
// returns +infinity

For negative numbers, the natural logarithmnatural-logarithm is not defined.
var val = ln( -4 );
// returns NaN

Examples

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

var x;
var i;

for ( i = 0; i < 100; i++ ) {
	x = Math.round( Math.random() * 100 );
	console.log( ln( x ) );
}

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.