`<random>`: Implement size optimization for `mersenne_twister_engine`
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- Dominant language
- C++
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Description
Boost's Mersenne Twister is half the size of ours because (as I remember hearing long ago) they implemented an optimization that saves space without significantly impacting time.
Interestingly, I observe that libstdc++ and libc++ appear to share this optimization, but only for their mt19937_64:
https://godbolt.org/z/8WKb1nWWW
vNext note: Resolving this issue will require breaking binary compatibility. We won't be able to accept pull requests for this issue until the vNext branch is available. See #169 for more information.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by studying the mersenne_twister_engine implementation and the size optimization used by libstdc++ and libc++, using the linked Compiler Explorer example for comparison. Confirm the design needed for this implementation and check the vNext compatibility constraint; done means reducing the engine's storage without significantly impacting performance.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- tooling
- Issue type
- Refactor
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100