LinearAlgebra

This package is part of the Julia standard library (stdlib).

LinearAlgebra.jl provides functionality for performing linear algebra operations in Julia.

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Using development versions of this package

This package performs some type piracy and is also included in the sysimage, which makes using a development version slightly more complex than usual.

To use a development version of this package, you can choose one of the following methods:

1. Prune the sysimg version and load the package:

   Start julia as

   JULIA_PRUNE_OLD_LA=true julia +nightly --compiled-modules=existing --project -i -e 'include("test/prune_old_LA.jl")'
   

   where it is assumed that one is already within the LinearAlgebra directory (otherwise, adjust the project path accordingly). The julia +nightly command above assumes that juliaup is being used to launch julia, but one may substitute this with the path to the julia executable.

2. Build Julia with the custom LinearAlgebra commit:

   Modify the commit in stdlib/LinearAlgebra.version and build Julia. This requires one to push the development branch to GitHub or an equivalent platform.

3. Build a custom sysimage with the new LinearAlgebra:

   • Install PackageCompiler.
   • Load it and, with this project active, run:

     create_sysimage(["LinearAlgebra"]; sysimage_path="new_sysimage.so", incremental=false, filter_stdlibs=true)
     

   • Start Julia with the custom sysimage:

     julia -Jnew_sysimage.so
     

Migrating a Pull Request (PR) from the Julia repository to this repository

Since this package was split out from the main Julia repository, you might have previously made a pull request (PR) to the Julia repo. You can easily migrate such PRs to this repository using the following steps:

1. Add the Julia repository (or your fork) as a new remote repository:

   git remote add juliarepo https://github.com/JuliaLang/julia
   

2. Fetch the commits from the Julia repository:

   git fetch juliarepo
   

3. Cherry-pick the relevant commits made in the Julia repository to this repository:

   git cherry-pick $JULIA_COMMIT