Security News
tea.xyz Spam Plagues npm and RubyGems Package Registries
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
math-float64-exponent
Advanced tools
Readme
Returns an integer corresponding to the unbiased exponent of a double-precision floating-point number.
$ npm install math-float64-exponent
var exponent = require( 'math-float64-exponent' );
Returns an integer
corresponding to the unbiased exponent of a double-precision floating-point number.
var exp = exponent( 3.14e307 );
// returns 1021 => 2**1021 ~ 1e307
var exp = exponent( 3.14e-307 );
// returns -1019 => 2**-1019 ~ 1e-307
exp = exponent( -3.14 );
// returns 1
exp = exponent( 0 );
// returns 0
exp = exponent( NaN );
// returns 1024 => 2**1024 ~ infinity
var round = require( 'math-round' );
var pow = require( 'math-power' );
var exponent = require( 'math-float64-exponent' );
var frac;
var exp;
var x;
var e;
var i;
// Generate random numbers and extract their exponents...
for ( i = 0; i < 100; i++ ) {
frac = Math.random() * 10;
exp = round( Math.random()*646 ) - 323;
x = frac * pow( 10, exp );
e = exponent( x );
console.log( 'x: %d. unbiased exponent: %d.', x, e );
}
To run the example code from the top-level application directory,
$ node ./examples/index.js
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.
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
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
Copyright © 2016. The Compute.io Authors.
FAQs
Returns an integer corresponding to the unbiased exponent of a double-precision floating-point number.
The npm package math-float64-exponent receives a total of 2,829 weekly downloads. As such, math-float64-exponent popularity was classified as popular.
We found that math-float64-exponent demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
Security News
As cyber threats become more autonomous, AI-powered defenses are crucial for businesses to stay ahead of attackers who can exploit software vulnerabilities at scale.
Security News
UnitedHealth Group disclosed that the ransomware attack on Change Healthcare compromised protected health information for millions in the U.S., with estimated costs to the company expected to reach $1 billion.