Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
504336822f
`Nat.repr` was implemented by generating a list of `Chars`, each created by a 10-way if-then-else. This can cause significant slow down in some particular use cases. Now `Nat.repr` is `implemented_by` a faster implementation that uses C++’s `std::to_string` on small numbers (< USize.size) and maintains an array of pre-allocated strings for the first 128 numbers. The handling of big numbers (≥ USize.size) remains as before. |
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| CONTRIBUTING.md | ||
| flake.lock | ||
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| lean-toolchain | ||
| lean.code-workspace | ||
| LICENSE | ||
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This is the repository for Lean 4.
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