dev-cpp/tlfloat: Fix build with libc++

Signed-off-by: Sv. Lockal <lockalsash@gmail.com>
Part-of: https://github.com/gentoo/gentoo/pull/46894
Signed-off-by: Alfredo Tupone <tupone@gentoo.org>

dev-cpp/tlfloat/files/tlfloat-1.17.1_p20250711-libcxx.patch

@@ -0,0 +1,12 @@
+Fix build with libc++
+Upstream PR: https://github.com/shibatch/tlfloat/pull/6
+--- a/src/include/tlfloat/tlfloat.hpp
++++ b/src/include/tlfloat/tlfloat.hpp
+@@ -8,6 +8,7 @@
+ #define __TLFLOAT_HPP_INCLUDED__
+ 
+ #include <cstdio>
++#include <type_traits>
+ 
+ #include <tlfloat/bigint.hpp>
+ 

dev-cpp/tlfloat/tlfloat-1.17.1_p20250711.ebuild

@@ -22,7 +22,10 @@ KEYWORDS="~amd64 ~arm64 ~riscv"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
-PATCHES=( "${FILESDIR}"/${P}-fPIC.patch )
+PATCHES=(
+	"${FILESDIR}"/${P}-fPIC.patch
+	"${FILESDIR}"/${P}-libcxx.patch
+)
 
 src_configure() {
 	local mycmakeargs=(