[ViralBShah]

libklu provides Float64 and ComplexF64 values with Int32 and Int64 indices. KLU.jl converted other values and right-hand sides, so what looked like support for a type was a hidden conversion. This allows only what the library provides. Because this is breaking, it sets the version to 0.7.0.

Breaking changes

Call	Before	Now
klu with Float16, Float32, BigFloat, ComplexF32, Complex{Int} or other converted values	Converts to 64-bit	MethodError
klu! with values of another type	Converts to 64-bit	MethodError
klu!(K, S) where S has another index type	Works	MethodError
klu or KLUFactorization with Int32 colptr and Int64 rowval	Converts in the constructor, or MethodError from klu	MethodError
ldiv!(K, B) with a real K and complex B	Solves real and imaginary parts separately	MethodError
K \ B where B has another element type, such as Float32, Int, or real with a complex K	Converts, returns 64-bit	ArgumentError
ldiv!(Y, K, B) where Y or B has another element type	Converts	ArgumentError

All of these apply to K' and transpose(K) as well. Callers convert first, for example klu(Float64.(A)) or K \ Float64.(b).

\ and the three-argument ldiv! throw ArgumentError rather than MethodError because LinearAlgebra's generic methods would otherwise accept and convert these, so KLU.jl needs its own methods to reject them.

K \ B still accepts any array of the right element type, such as a non-strided view, and copies it.

Testing

On Apple silicon macOS, the test suite passes on Julia 1.12.7 and 1.13.3, and Aqua and the docs build pass on 1.12.7. Linux and Windows are left to CI.

🤖 Generated with Claude Code

[ViralBShah]

@rayegun @luke-kiernan What are your thoughts on this direction? We can either convert for all the types or just provide support for only the types that are provided by KLU.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.19%. Comparing base (857e0e0) to head (1344d8f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #60      +/-   ##
==========================================
- Coverage   97.29%   97.19%   -0.11%     
==========================================
  Files           1        1              
  Lines         407      392      -15     
==========================================
- Hits          396      381      -15     
  Misses         11       11              

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