nextafter
Returns the next representable double-precision floating-point number after
x
towardy
.
Installation
$ npm install math-float64-nextafter
Usage
var nextafter = ;
nextafter( x, y )
Returns the next representable double-precision floating-point number after x
toward y
.
var z =// returns 1.0000000000000002z = ;// returns 0.9999999999999999z = ;// returns -9007199254740994
If x
equals y
, the function
returns y
, ensuring consistent behavior around zero.
var z = ;// returns -0.0z = ;// returns +0.0
If either x
or y
is NaN
, the function
returns NaN
.
var z = ;// returns NaNz = ;// returns NaNz = ;// returns NaN
Examples
var PINF = ;var NINF = ;var nextafter = ;var x;var y;var z;var i;for i = 0; i < 100; i++x = Math*1e6 - 5e5;if Math < 05y = NINF;elsey = PINF;z = ;console;
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
Copyright
Copyright © 2016. The Compute.io Authors.