Prevent xsimd::signbit scalar overload from participating to non-scalar resolution

serge-sans-paille · serge-sans-paille · commit 7c9611e4cf3b · 2026-04-20T06:11:03.000Z
Related to serge-sans-paille/pythran#2423
diff --git a/include/xsimd/arch/xsimd_scalar.hpp b/include/xsimd/arch/xsimd_scalar.hpp
@@ -819,7 +819,7 @@ namespace xsimd
         return static_cast<long double>(std::signbit(x));
     }
 
-    template <class T>
+    template <class T, class = std::enable_if_t<std::is_scalar<T>::value>>
     XSIMD_INLINE auto signbit(T const& v) noexcept
     {
         return bitofsign(v);

Original file line number	Diff line number	Diff line change
`@@ -819,7 +819,7 @@ namespace xsimd`
`819`	`819`	`return static_cast<long double>(std::signbit(x));`
`820`	`820`	`}`
`821`	`821`
`822`		`- template <class T>`
	`822`	`+ template <class T, class = std::enable_if_t<std::is_scalar<T>::value>>`
`823`	`823`	`XSIMD_INLINE auto signbit(T const& v) noexcept`
`824`	`824`	`{`
`825`	`825`	`return bitofsign(v);`