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@jishnub jishnub commented May 12, 2025

Fixes a regression introduced in v1.12, where we have a special branch for diagonal matrices to improve performance. The issue is that log for Diagonal matrices acts elementwise, which, for real matrices, requires the diagonal elements to be greater than zero. This PR adds an extra branch to check this.

@jishnub jishnub added the backport 1.12 Change should be backported to release-1.12 label May 12, 2025
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codecov bot commented May 12, 2025

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.77%. Comparing base (3393398) to head (a9ac43f).
Report is 10 commits behind head on master.

Additional details and impacted files
@@            Coverage Diff             @@
##           master    #1352      +/-   ##
==========================================
+ Coverage   93.74%   93.77%   +0.03%     
==========================================
  Files          34       34              
  Lines       15752    15754       +2     
==========================================
+ Hits        14766    14774       +8     
+ Misses        986      980       -6     

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@jishnub jishnub mentioned this pull request May 12, 2025
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@jishnub jishnub requested a review from dkarrasch May 14, 2025 07:03
@jishnub jishnub merged commit 91ef00e into master May 16, 2025
4 checks passed
@jishnub jishnub deleted the jishnub/logdense branch May 16, 2025 17:21
jishnub added a commit that referenced this pull request May 17, 2025
Fixes a regression introduced in v1.12, where we have a special branch
for diagonal matrices to improve performance. The issue is that log for
`Diagonal` matrices acts elementwise, which, for real matrices, requires
the diagonal elements to be greater than zero. This PR adds an extra
branch to check this.
jishnub added a commit that referenced this pull request May 26, 2025
Backported PRs:
- [x] #1209 <!-- Remove `LinearAlgebra` qualifications in `cholesky.jl`
-->
- [x] #1230 <!-- Avoid materializing `diag` in `Diagonal` `kron` -->
- [x] #1240 <!-- Reduce `stable_muladdmul` branches in `generic
matvecmul!` -->
- [x] #1247 <!-- fix dispatch to herk -->
- [x] #1255 <!-- use smaller matrix size in `peakflops` on 32-bit -->
- [x] #1310 <!-- Only `@noinline` error path in `matmul_size_check` -->
- [x] #1267 <!-- Refine column ranges in `_isbanded_impl` -->
- [x] #1320 <!-- Copy matrices in `triu`/`tril` if no zero exists for
the `eltype` -->
- [x] #1324 <!-- Fix empty `Tridiagonal` broadcast -->
- [x] #1327 <!-- `iszero` check in hessenberg setindex -->
- [x] #1326 <!-- Fix multiplication with empty `HessenbergQ` -->
- [x] #1332 <!-- Unwrap triangular matrices in broadcast -->
- [x] #1337 <!-- Change `1:size` to `axes` in bidiag mul -->
- [x] #1342 <!-- `Char` uplo in `Bidiagonal` constructor -->
- [x] #1344 <!-- Update the docstring of ldiv! -->
- [x] #1335 <!-- Test: prune old LA based on ENV variable -->
- [x] #1346 <!-- Fix scaling unit triangular matrices -->
- [x] #1355 <!-- Add compat notice for `diagview` -->
- [x] #1349 <!-- Prune `LinearAlgebra` module in ambiguity test -->

Contains multiple commits, manual intervention needed:
- [x] #1238 <!-- Ensure positive-definite matrix in lapack posv test -->
- [x] #1298 <!-- Add `diagm` example -->
- [x] #1312 <!-- WIP: Try use method deletion instead of custom sysimage
-->
- [x] #1333 <!-- Make `fillstored!` public -->
- [x] #1331 <!-- Document SingularException throw for
inv(::AbstractMatrix) -->
- [x] #1350 <!-- Fix copy for partly initialized unit triangular -->

Non-merged PRs with backport label:
- [x] #1352 <!-- log for dense diagonal matrix with negative elements
-->
- [ ] #1305 <!-- Bounds-checking in triangular indexing branches -->

---------

Co-authored-by: Mateus Araújo <[email protected]>
Co-authored-by: Jeff Bezanson <[email protected]>
Co-authored-by: Steven G. Johnson <[email protected]>
Co-authored-by: WalterMadelim <[email protected]>
Co-authored-by: Kristoffer Carlsson <[email protected]>
Co-authored-by: Daniel Karrasch <[email protected]>
Co-authored-by: Michael Abbott <[email protected]>
@jishnub jishnub removed the backport 1.12 Change should be backported to release-1.12 label Jun 5, 2025
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