[Rust] Normalize mid calculation in case overflow #71

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by separate terms of service, privacy policy, and support documentation.
	# This workflow will download a prebuilt Ruby version, install dependencies and run tests with Rake。
	# For more information see: https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby

	name: Ruby

	on:
	push:
	branches: [ "main" ]
	paths: ["codes/ruby/*/.rb"]
	pull_request:
	branches: [ "main" ]
	paths: ["codes/ruby/*/.rb"]
	workflow_dispatch:

	permissions:
	contents: read

	jobs:
	test:

	name: Ruby ${{ matrix.ruby-version }} on ${{ matrix.os }}
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, macos-latest, windows-latest]
	ruby-version: ['3.3']

	steps:
	- uses: actions/checkout@v4
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby-version }}
	- name: Run tests
	run: ruby codes/ruby/test_all.rb

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