Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

chore(primitives): minor optimization for PowerOfTwo functions #2081

Open
wants to merge 1 commit into
base: main
Choose a base branch
from

Conversation

abi87
Copy link
Contributor

@abi87 abi87 commented Oct 16, 2024

Summary by CodeRabbit

  • Bug Fixes
    • Updated the behavior of power functions to return 1 for both input values of 0 and 1, improving consistency in results.

@abi87 abi87 self-assigned this Oct 16, 2024
Copy link
Contributor

coderabbitai bot commented Oct 16, 2024

Walkthrough

The changes involve modifications to the PrevPowerOfTwo and NextPowerOfTwo functions in the pow package. The conditional checks at the beginning of both functions have been updated from if u == 0 to if u <= 1, allowing both functions to return 1 when the input u is either 0 or 1. The remainder of the logic in these functions, which performs bit manipulation to determine the previous and next powers of two, remains unchanged.

Changes

File Path Change Summary
mod/primitives/pkg/math/pow/pow.go Updated conditional checks in PrevPowerOfTwo and NextPowerOfTwo functions to if u <= 1.

Poem

In the land of numbers, where powers reside,
A change was made, with logic as guide.
From zero to one, both now return,
A new way to calculate, for all to learn.
Hopping through bits, we dance with delight,
In the world of math, everything feels right! 🐇✨


Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media?

❤️ Share
🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

  • Review comments: Directly reply to a review comment made by CodeRabbit. Example:
    • I pushed a fix in commit <commit_id>, please review it.
    • Generate unit testing code for this file.
    • Open a follow-up GitHub issue for this discussion.
  • Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
    • @coderabbitai generate unit testing code for this file.
    • @coderabbitai modularize this function.
  • PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
    • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
    • @coderabbitai read src/utils.ts and generate unit testing code.
    • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.
    • @coderabbitai help me debug CodeRabbit configuration file.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (Invoked using PR comments)

  • @coderabbitai pause to pause the reviews on a PR.
  • @coderabbitai resume to resume the paused reviews.
  • @coderabbitai review to trigger an incremental review. This is useful when automatic reviews are disabled for the repository.
  • @coderabbitai full review to do a full review from scratch and review all the files again.
  • @coderabbitai summary to regenerate the summary of the PR.
  • @coderabbitai resolve resolve all the CodeRabbit review comments.
  • @coderabbitai configuration to show the current CodeRabbit configuration for the repository.
  • @coderabbitai help to get help.

Other keywords and placeholders

  • Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
  • Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
  • Add @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

  • You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
  • Please see the configuration documentation for more information.
  • If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Documentation and Community

  • Visit our Documentation for detailed information on how to use CodeRabbit.
  • Join our Discord Community to get help, request features, and share feedback.
  • Follow us on X/Twitter for updates and announcements.

Copy link
Contributor

@coderabbitai coderabbitai bot left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI
Review profile: ASSERTIVE

📥 Commits

Files that changed from the base of the PR and between 8c2030a and 2806185.

📒 Files selected for processing (1)
  • mod/primitives/pkg/math/pow/pow.go (2 hunks)
🧰 Additional context used

@@ -24,7 +24,7 @@ package pow
//
//nolint:mnd // todo fix.
func PrevPowerOfTwo[U64T ~uint64](u U64T) U64T {
if u == 0 {
if u <= 1 {
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

🧹 Nitpick (assertive)

LGTM! Consider updating the function documentation.

The change from if u == 0 to if u <= 1 is a good optimization. It correctly handles both edge cases (0 and 1) without affecting the function's behavior for other inputs.

Consider updating the function documentation to reflect this change. For example:

// PrevPowerOfTwo returns the previous power of 2 for the given input.
// For inputs 0 and 1, it returns 1.

@@ -40,7 +40,7 @@
//
//nolint:mnd // todo fix.
func NextPowerOfTwo[U64T ~uint64](u U64T) U64T {
if u == 0 {
if u <= 1 {
Copy link
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

🧹 Nitpick (assertive)

💡 Codebase verification

Found multiple instances of //nolint:mnd. Recommend a dedicated effort to address these directives.

🔗 Analysis chain

LGTM! Consider documentation updates and addressing the TODO.

The change from if u == 0 to if u <= 1 is a good optimization. It correctly handles both edge cases (0 and 1) without affecting the function's behavior for other inputs.

  1. Consider updating the function documentation to reflect this change. For example:
// NextPowerOfTwo returns the next power of 2 for the given input.
// For inputs 0 and 1, it returns 1.
// Panics if the next power of 2 would overflow uint64.
  1. There's a TODO comment to fix the nolint:mnd directive. Consider addressing this in a future PR or explaining why it's needed if it can't be removed.

To ensure the nolint:mnd directive is still necessary, let's check if it's used elsewhere in the codebase:

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check usage of nolint:mnd directive in the codebase

# Test: Search for nolint:mnd usage
rg --type go "nolint:mnd"

Length of output: 5245

Copy link

codecov bot commented Oct 16, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 22.23%. Comparing base (8c2030a) to head (2806185).

Additional details and impacted files

Impacted file tree graph

@@           Coverage Diff           @@
##             main    #2081   +/-   ##
=======================================
  Coverage   22.23%   22.23%           
=======================================
  Files         356      356           
  Lines       16022    16022           
  Branches       12       12           
=======================================
  Hits         3563     3563           
  Misses      12306    12306           
  Partials      153      153           
Files with missing lines Coverage Δ
mod/primitives/pkg/math/pow/pow.go 92.30% <100.00%> (ø)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Development

Successfully merging this pull request may close these issues.

1 participant