19/25: gnu: Add julia-woodburymatrices.

[guix-commits]

efraim pushed a commit to branch master
in repository guix.

commit 20b79fed7658329c92912d79882ed36df5d57fd3
Author: Efraim Flashner <efraim@flashner.co.il>
AuthorDate: Tue Jun 8 17:22:53 2021 +0300

    gnu: Add julia-woodburymatrices.
    
    * gnu/packages/julia-xyz.scm (julia-woodburymatrices): New variable.
---
 gnu/packages/julia-xyz.scm | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gnu/packages/julia-xyz.scm b/gnu/packages/julia-xyz.scm
index db7ca3a..4c55801 100644
--- a/gnu/packages/julia-xyz.scm
+++ b/gnu/packages/julia-xyz.scm
@@ -2886,6 +2886,29 @@ useful in order to support @code{VersionNumber} 
comparisons applied to
 allows for efficient string representation and transfer")
     (license license:expat)))
 
+(define-public julia-woodburymatrices
+  (package
+    (name "julia-woodburymatrices")
+    (version "0.5.3")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/timholy/WoodburyMatrices.jl";)
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32 "04yykivi8zrbryxlmb0p5xa6lma8iq22r5s863117dnnqj5gaffd"))))
+    (build-system julia-build-system)
+    (home-page "https://github.com/timholy/WoodburyMatrices.jl";)
+    (synopsis "Support for the Woodbury matrix identity for Julia")
+    (description "This package provides support for the Woodbury matrix 
identity
+for the Julia programming language.  This is a generalization of the
+Sherman-Morrison formula.  Note that the Woodbury matrix identity is notorious
+for floating-point roundoff errors, so be prepared for a certain amount of
+inaccuracy in the result.")
+    (license license:expat)))
+
 (define-public julia-zipfile
   (package
     (name "julia-zipfile")