JavaScriptIntervalArithmetic

JavaScript Implementation of Interval Arithmetic.

This is a javascript library for Interval Arithmetic. Interval Arithmetic can avoid the arcuracy loss during floating point calculation. You can find out more about Interval Arithmetic and its uses on wikipedia.

Now this library is being used for implicit function plotting by https://zizhujy.js.org/zh-CN/FunctionGrapher.html.

Install ruby

scoop install ruby

Install msys2 suggested by ruby

scoop install msys2

Install rake

gem install rake

Install dependencies

bundle install

Install phantomjs

The js test cases can be executed by phantomjs, to install it, run:

brew install --cask phantomjs

Running tests

With the above toolchain installed, you can just type rake to run tests.

In mac osx:

GEM_PATH=ruby/2.6.0 rake --trace

Check test details

open the html report file indicated by the command line output in the above step:

open file:///Users/cnjeftia/jeff-tian/JavaScriptIntervalArithmetic/Source/Scripts.Test/spec/zizhujy.com.IntervalArithmetic.Spec.html?spec=zizhujy.com.IntervalArithmetic%20test%20suite

Trouble shooting guide

1. mac os bundle install errors:

/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': Could not find 'bundler' (2.3.7) required by your /Users/cnjeftia/jeff-tian/JavaScriptIntervalArithmetic/Gemfile.lock. (Gem::GemNotFoundException)
To update to the latest version installed on your system, run `bundle update --bundler`.
To install the missing version, run `gem install bundler:2.3.7`
	from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems.rb:302:in `activate_bin_path'
	from /usr/bin/bundle:23:in `<main>'

You can fix it follow the error messages, or just type

sudo gem install bundler

to install latest bundler

2. mac os phantomjs can not be opened

Refer to https://www.yuque.com/tian-jie/blog/xsh9nz, run

sudo spctl --master-disable