[bug#58261] [PATCH 01/11] gnu: Add fast-float.

[David Elsing]

* gnu/packages/cpp.scm (fast-float): New variable.
---
 gnu/packages/cpp.scm | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/gnu/packages/cpp.scm b/gnu/packages/cpp.scm
index d03e0bc7e1..e597dba40c 100644
--- a/gnu/packages/cpp.scm
+++ b/gnu/packages/cpp.scm
@@ -29,6 +29,7 @@
 ;;; Copyright © 2022 muradm <mail@muradm.net>
 ;;; Copyright © 2022 Attila Lendvai <attila@lendvai.name>
 ;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
+;;; Copyright © 2022 David Elsing <david.elsing@posteo.net>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1907,3 +1908,26 @@ (define-public cpp-mustache
 templated string type for compatibility with any STL-like string (std::string,
 std::wstring, etc).")
     (license license:boost1.0)))
+
+(define-public fast-float
+  (package
+    (name "fast-float")
+    (version "3.5.1")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/fastfloat/fast_float";)
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0z3rxxd0pwvw70dbnv63rm67biw829vdqf50y16isxm6g3sbrz8g"))))
+    (build-system cmake-build-system)
+    (arguments
+     ;; Tests require downloading a lot of additional data
+     (list #:tests? #f))
+    (home-page "https://github.com/fastfloat/fast_float";)
+    (synopsis "Fast and exact implementation of the C++ from_chars functions")
+    (description "@code{fast_float} is a header-only C++ library which 
provides fast
+implementations of the from_chars functions for float and double types.")
+    (license (list license:asl2.0 license:expat)))) ; dual licensed
-- 
2.37.0