Remove overloads

We will add the overloads in a seperate
patch.

Author: robincaloudis

libcxx/include/__math/traits.h

@@ -38,48 +38,6 @@ _LIBCPP_NODISCARD inline
   return __builtin_signbit(__x);
 }
 
-_LIBCPP_NODISCARD inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI
-#ifdef _LIBCPP_PREFERRED_OVERLOAD
-_LIBCPP_PREFERRED_OVERLOAD
-#endif
-    bool
-    signbit(float __x) _NOEXCEPT {
-// TODO(LLVM 22): Remove `__builtin_copysign`-workaround once support for Clang 19 is dropped.
-#if !__has_constexpr_builtin(__builtin_signbit) && _LIBCPP_STD_VER >= 23
-  return __builtin_copysign(1.0, __x) == -1.0;
-#else
-  return __builtin_signbit(__x);
-#endif
-}
-
-_LIBCPP_NODISCARD inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI
-#ifdef _LIBCPP_PREFERRED_OVERLOAD
-_LIBCPP_PREFERRED_OVERLOAD
-#endif
-    bool
-    signbit(double __x) _NOEXCEPT {
-// TODO(LLVM 22): Remove `__builtin_copysign`-workaround once support for Clang 19 is dropped.
-#if !__has_constexpr_builtin(__builtin_signbit) && _LIBCPP_STD_VER >= 23
-  return __builtin_copysign(1.0, __x) == -1.0;
-#else
-  return __builtin_signbit(__x);
-#endif
-}
-
-_LIBCPP_NODISCARD inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI
-#ifdef _LIBCPP_PREFERRED_OVERLOAD
-_LIBCPP_PREFERRED_OVERLOAD
-#endif
-    bool
-    signbit(long double __x) _NOEXCEPT {
-// TODO(LLVM 22): Remove `__builtin_copysign`-workaround once support for Clang 19 is dropped.
-#if !__has_constexpr_builtin(__builtin_signbit) && _LIBCPP_STD_VER >= 23
-  return __builtin_copysign(1.0, __x) == -1.0;
-#else
-  return __builtin_signbit(__x);
-#endif
-}
-
 template <class _A1, __enable_if_t<is_integral<_A1>::value && is_signed<_A1>::value, int> = 0>
 _LIBCPP_NODISCARD inline _LIBCPP_CONSTEXPR_SINCE_CXX23 _LIBCPP_HIDE_FROM_ABI bool signbit(_A1 __x) _NOEXCEPT {
   return __x < 0;

libcxx/test/std/numerics/c.math/signbit.pass.cpp

@@ -79,14 +79,5 @@ int main(int, char**) {
   types::for_each(types::floating_point_types(), TestFloat());
   types::for_each(types::integral_types(), TestInt());
 
-  // Make sure we can call `std::signbit` with convertible types. This checks
-  // whether overloads for all cv-unqualified floating-point types are working
-  // as expected.
-  {
-    assert(!std::signbit(ConvertibleTo<float>()));
-    assert(!std::signbit(ConvertibleTo<double>()));
-    assert(!std::signbit(ConvertibleTo<long double>()));
-  }
-
   return 0;
 }