diff --git a/dev-cpp/fast_float/Manifest b/dev-cpp/fast_float/Manifest
new file mode 100644
index 0000000000000..b4b2a441fd7ff
--- /dev/null
+++ b/dev-cpp/fast_float/Manifest
@@ -0,0 +1 @@
+DIST fast_float-6.1.6.tar.gz 101727 BLAKE2B eb9833f7bff6e6086db1525fcc71231c5cc8f47985aa4c71078d896afb5fea20c41bfdb55de6c1e8c9cfa6c9b842331f340115590683e1d9e6a3ba40f4148870 SHA512 d2dbd2537f433329a76539c061238af080125526b7822fbfdf0f70ac0a6800114848b9be0fdf9c51dbb22211af3bdcf9829ed9cc4a47fd28ecdeecf7c5d4b663
diff --git a/dev-cpp/fast_float/fast_float-6.1.6.ebuild b/dev-cpp/fast_float/fast_float-6.1.6.ebuild
new file mode 100644
index 0000000000000..afa18fe2c69b5
--- /dev/null
+++ b/dev-cpp/fast_float/fast_float-6.1.6.ebuild
@@ -0,0 +1,34 @@
+# Copyright 2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="Fast and exact implementation of the C++ from_chars functions for number types"
+HOMEPAGE="https://github.com/fastfloat/fast_float"
+SRC_URI="https://github.com/fastfloat/fast_float/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="|| ( Apache-2.0 Boost-1.0 MIT )"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="test"
+
+BDEPEND="test? ( dev-cpp/doctest )"
+
+RESTRICT="!test? ( test )"
+
+src_configure() {
+	local mycmakeargs=( -DFASTFLOAT_TEST=$(usex test) )
+	# Avoid passing these without USE=test to avoid cmake warning
+	# "Manually-specified variables were not used by the project"
+	use test && mycmakeargs+=(
+		-DSYSTEM_DOCTEST=ON
+		# Unconditionally calls FetchContent
+		-DFASTFLOAT_SUPPLEMENTAL_TESTS=OFF
+	)
+
+	sed -i 's/-Werror//' tests/CMakeLists.txt || die
+
+	cmake_src_configure
+}
diff --git a/dev-cpp/fast_float/metadata.xml b/dev-cpp/fast_float/metadata.xml
new file mode 100644
index 0000000000000..ec84f74b1736f
--- /dev/null
+++ b/dev-cpp/fast_float/metadata.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person" proxied="yes">
+		<email>stffn.mobil@freenet.de</email>
+		<name>Steffen Winter</name>
+	</maintainer>
+	<maintainer type="project" proxied="proxy">
+		<email>proxy-maint@gentoo.org</email>
+		<name>Proxy Maintainers</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">fastfloat/fast_float</remote-id>
+	</upstream>
+</pkgmetadata>