max/lean4-htt
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 2
Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
35812 commits 1 branch 0 tags 5.3 GiB
Find a file
Luisa Cicolini e59d070af1
feat: add BitVec.umulOverflow and BitVec.smulOverflow definitions and additional theorems (#7659) 
This PR adds SMT-LIB operators to detect overflow
`BitVec.(umul_overflow, smul_overflow)`, according to the definitions
[here](https://github.com/SMT-LIB/SMT-LIB-2/blob/2.7/Theories/FixedSizeBitVectors.smt2),
and the theorems proving equivalence of such definitions with the
`BitVec` library functions (`umulOverflow_eq`, `smulOverflow_eq`).
Support theorems for these proofs are `BitVec.toInt_one_of_lt,
BitVec.toInt_mul_toInt_lt, BitVec.le_toInt_mul_toInt,
BitVec.toNat_mul_toNat_lt, BitVec.two_pow_le_toInt_mul_toInt_iff,
BitVec.toInt_mul_toInt_lt_neg_two_pow_iff` and `Int.neg_mul_le_mul,
Int.bmod_eq_self_of_le_mul_two, Int.mul_le_mul_of_natAbs_le,
Int.mul_le_mul_of_le_of_le_of_nonneg_of_nonpos, Int.pow_lt_pow`. The PR
also includes a set of tests.

Co-authored by @tobiasgrosser.

---------

Co-authored-by: Tobias Grosser <tobias@grosser.es>
Co-authored-by: Tobias Grosser <github@grosser.es>
Co-authored-by: Siddharth <siddu.druid@gmail.com>
2025-04-03 08:42:52 +00:00
.github chore: CI: improve ccache (#7643) 2025-04-02 13:18:42 +00:00
doc chore: begin development cycle for v4.20.0 (#7798) 2025-04-03 08:29:52 +00:00
images
nix perf: use mimalloc by default (#7710) 2025-03-30 22:40:41 +00:00
releases chore: copy v4.17.0 release notes from releases/v4.17.0 branch (#7325) 2025-03-04 11:24:51 +00:00
releases_drafts feat: importModules without loading environment extensions (#6325) 2025-04-02 08:37:11 +00:00
script feat: further release checklist automation (#7785) 2025-04-03 00:02:07 +00:00
src feat: add BitVec.umulOverflow and BitVec.smulOverflow definitions and additional theorems (#7659) 2025-04-03 08:42:52 +00:00
stage0 chore: update stage0 2025-04-03 03:26:05 +00:00
tests feat: add BitVec.umulOverflow and BitVec.smulOverflow definitions and additional theorems (#7659) 2025-04-03 08:42:52 +00:00
.gitattributes chore: Do not hide stage0/src/stdlib_flags.h from diffs 2023-09-13 19:29:25 +02:00
.gitignore feat: support Lake for building Lean core oleans (#3886) 2024-06-13 16:18:24 +00:00
.gitpod.Dockerfile chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.gitpod.yml chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.ignore chore: ignore stage0/ (for rg etc.) 2022-03-18 15:28:20 +01:00
CMakeLists.txt fix: sanitize build and mimalloc (#7772) 2025-04-01 12:57:24 +00:00
CMakePresets.json fix: sanitize build and mimalloc (#7772) 2025-04-01 12:57:24 +00:00
CODEOWNERS chore: adjust CODEOWNERS (#6327) 2024-12-10 08:37:20 +00:00
CONTRIBUTING.md doc: triage 2024-07-26 18:24:06 +02:00
flake.lock feat: upgrade cadical to 2.1.2 (#7347) 2025-03-05 17:58:58 +00:00
flake.nix chore: CI: bring back coredump tracing (#7625) 2025-03-21 15:25:45 +00:00
lean-toolchain doc: VS Code dev setup (#2961) 2023-11-30 08:35:03 +00:00
lean.code-workspace chore: add the lean4 extension to the vscode workspace (#3059) 2023-12-14 08:58:21 +00:00
LICENSE chore: remove LICENSE header that confused GitHub 2021-11-18 09:42:35 +01:00
LICENSES feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
README.md chore: update documentation title and link README to reference (#6409) 2024-12-17 22:18:56 +00:00
RELEASES.md chore: split RELEASES.md into releases/ folder (#6918) 2025-02-03 11:04:09 +00:00

README.md

This is the repository for Lean 4.

About

Installation

See Setting Up Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean (documentation source: doc/make/index.md).