math-exp

Natural exponential function.

Downloads in past

Stats

StarsIssuesVersionUpdatedCreatedSize
math-exp
1.0.08 years ago8 years agoMinified + gzip package size for math-exp in KB

Readme

Natural Exponential Function
!NPM versionnpm-imagenpm-url !Build Statusbuild-imagebuild-url !Coverage Statuscoverage-imagecoverage-url !Dependenciesdependencies-imagedependencies-url
Natural exponential functionexponential-function.

The natural exponential functionexponential-function is defined as
<img src="https://cdn.rawgit.com/math-io/exp/1ecfe1ee0dc303c2ebb2b0471f0328106eb915cd/docs/img/eqn.svg" alt="Natural exponential function definition.">
<br>

where e is Euler'seulers-number number.

Installation

$ npm install math-exp

Usage

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

exp( x )

Evaluates the natural exponential functionexponential-function.
var val = exp( 4 );
// returns ~54.5982

val = exp( -9 );
// returns ~1.234e-4

val = exp( 0 );
// returns 1

val = exp( NaN );
// returns NaN

Examples

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

var x;
var i;

for ( i = 0; i < 100; i++ ) {
	x = Math.random()*100 - 50;
	console.log( 'e^%d = %d', x, exp( 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.