dev-cpp/fast_float: new package, add 6.1.0

Signed-off-by: Steffen Winter <steffen.winter@proton.me>

dev-cpp/fast_float/Manifest

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+DIST fast_float-6.1.0.tar.gz 95974 BLAKE2B 9c7abd293fcd0dd7e429825918b368071686d06baa97cee5d71099490dbed73acf5c8946f086dad21affaa54d94444a922d25d2ce9724a903944722790a7771e SHA512 43c21f8dbcb4524fb678b5d928d6edeefc84b6e356221696ffe0f3e8d49e97aa2c0325ca116541ec9ae2cec7d268d6720a49999e8daad52a5d7bf34377c970da

dev-cpp/fast_float/fast_float-6.1.0.ebuild

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+# 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.git"
+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 ON OFF) )
+	use test && mycmakeargs+=(
+		-DSYSTEM_DOCTEST=ON
+		# Unconditionally calls FetchContent
+		-DFASTFLOAT_SUPPLEMENTAL_TESTS=OFF
+	)
+	cmake_src_configure
+}

dev-cpp/fast_float/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="person">
+    <email>stffn.mobil@freenet.de</email>
+    <name>Steffen Winter</name>
+  </maintainer>
+  <upstream>
+    <remote-id type="github">fastfloat/fast_float</remote-id>
+  </upstream>
+</pkgmetadata>