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-rw-r--r--gnu/packages/maths.scm31
1 files changed, 31 insertions, 0 deletions
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index d4e3aca21e..e170fd4db9 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -127,6 +127,7 @@
#:use-module (gnu packages netpbm)
#:use-module (gnu packages ocaml)
#:use-module (gnu packages onc-rpc)
+ #:use-module (gnu packages parallel)
#:use-module (gnu packages pcre)
#:use-module (gnu packages popt)
#:use-module (gnu packages perl)
@@ -6657,3 +6658,33 @@ high-performance multidimensional array containers for scientific computing.")
(license (list license:artistic2.0
license:bsd-3
license:lgpl3+))))
+
+(define-public fxdiv
+ ;; There is currently no tag in this repo.
+ (let ((commit "63058eff77e11aa15bf531df5dd34395ec3017c8")
+ (version "0.0")
+ (revision "1"))
+ (package
+ (name "fxdiv")
+ (version (git-version version revision commit))
+ (home-page "https://github.com/Maratyszcza/FXdiv")
+ (source (origin
+ (method git-fetch)
+ (uri (git-reference (url home-page) (commit commit)))
+ (file-name (git-file-name name version))
+ (sha256
+ (base32
+ "0zwzh8gmbx4m6b18s5nf13b0dk5yjkd1fs8f421bl7fz5f9gjd9f"))
+ (patches (search-patches "fxdiv-system-libraries.patch"))))
+ (build-system cmake-build-system)
+ (inputs
+ `(("googletest" ,googletest)
+ ("googlebenchmark" ,googlebenchmark)))
+ (synopsis
+ "C++ library for division via fixed-point multiplication by inverse")
+ (description
+ "On modern CPUs and GPUs, integer division is several times slower than
+multiplication. FXdiv implements an algorithm to replace an integer division
+with a multiplication and two shifts. This algorithm improves performance
+when an application performs repeated divisions by the same divisor.")
+ (license license:expat))))