civodul pushed a commit to branch master
in repository guix.
commit dd7a77c34566c450945facbca0c0fb634e4246a5
Author: zimoun <[email protected]>
AuthorDate: Thu Mar 25 02:05:02 2021 +0100
gnu: Add julia-richardson.
* gnu/packages/julia-xyz.scm (julia-richardson): New variable.
Signed-off-by: Ludovic Courtès <[email protected]>
---
gnu/packages/julia-xyz.scm | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/gnu/packages/julia-xyz.scm b/gnu/packages/julia-xyz.scm
index 0da2452..b56fa54 100644
--- a/gnu/packages/julia-xyz.scm
+++ b/gnu/packages/julia-xyz.scm
@@ -715,6 +715,33 @@ another package is loaded, so that explicit dependencies
(and long load times)
can be avoided.")
(license license:expat)))
+(define-public julia-richardson
+ (package
+ (name "julia-richardson")
+ (version "1.4.0")
+ (source
+ (origin
+ (method git-fetch)
+ (uri (git-reference
+ (url "https://github.com/JuliaMath/Richardson.jl";)
+ (commit (string-append "v" version))))
+ (file-name (git-file-name name version))
+ (sha256
+ (base32 "06v9ii3d7hh41fsrfklaa8ap55z5s017f888mrd1c18y4fx9i4nx"))))
+ (build-system julia-build-system)
+ (home-page "https://juliapackages.com/p/richardson";)
+ (synopsis "Extrapolate function using Richardson method")
+ (description "This package provides a function extrapolate that
+extrapolates a given function @code{f(x)} to @code{f(x0)}, evaluating @code{f}
+only at a geometric sequence of points @code{> x0} (or optionally @code{<
+x0}). The key algorithm is Richardson extrapolation using a Neville–Aitken
+tableau, which adaptively increases the degree of an extrapolation polynomial
+until convergence is achieved to a desired tolerance (or convergence stalls
+due to e.g. floating-point errors). This allows one to obtain @code{f(x0)} to
+high-order accuracy, assuming that @code{f(x0+h)} has a Taylor series or some
+other power series in @code{h}.")
+ (license license:expat)))
+
(define-public julia-staticarrays
(package
(name "julia-staticarrays")
