rust-lang / rust-lang/rust

Tracking Issue for exposing float mask constants

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#154,064 2 comments 3 reactions 0 assignees View on GitHub

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C-tracking-issue T-libs
Dominant language
Rust
Stars
119k
Forks
16.1k
PR merge metrics
PR metrics pending

Description

Feature gate: #![feature(float_masks)]

This is a tracking issue for exposing constants for masking parts of floating point numbers.

Public API
pub const SIGN_MASK: u32 = 0x8000_0000;

pub const EXPONENT_MASK: u32 = 0x7f80_0000;

pub const MANTISSA_MASK: u32 = 0x007f_ffff;
Steps / History

(Remember to update the S-tracking-* label when checking boxes.)

  • ACP: rust-lang/libs-team#753
  • Implementation: #154372
  • Final comment period (FCP)^1
  • Stabilization PR
Unresolved Questions
  • None at this time/

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Read the feature-lifecycle stabilization guidance linked in footnote [^1] and review implementation PR #154372. Confirm the tracking checklist and unresolved-questions status; done is completing the final comment period and opening a stabilization PR.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
25/100

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