[libc++][NFC] Rename __find_impl to __find (#90163)

For most algorithms we've just added underscores to the detail function.
This changes `std::find` to match that pattern.

Author: philnik777

libcxx/include/__algorithm/find.h

@@ -43,7 +43,7 @@ _LIBCPP_BEGIN_NAMESPACE_STD
 // generic implementation
 template <class _Iter, class _Sent, class _Tp, class _Proj>
 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Iter
-__find_impl(_Iter __first, _Sent __last, const _Tp& __value, _Proj& __proj) {
+__find(_Iter __first, _Sent __last, const _Tp& __value, _Proj& __proj) {
   for (; __first != __last; ++__first)
     if (std::__invoke(__proj, *__first) == __value)
       break;
@@ -57,8 +57,7 @@ template <class _Tp,
           __enable_if_t<__is_identity<_Proj>::value && __libcpp_is_trivially_equality_comparable<_Tp, _Up>::value &&
                             sizeof(_Tp) == 1,
                         int> = 0>
-_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp*
-__find_impl(_Tp* __first, _Tp* __last, const _Up& __value, _Proj&) {
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp* __find(_Tp* __first, _Tp* __last, const _Up& __value, _Proj&) {
   if (auto __ret = std::__constexpr_memchr(__first, __value, __last - __first))
     return __ret;
   return __last;
@@ -71,8 +70,7 @@ template <class _Tp,
           __enable_if_t<__is_identity<_Proj>::value && __libcpp_is_trivially_equality_comparable<_Tp, _Up>::value &&
                             sizeof(_Tp) == sizeof(wchar_t) && _LIBCPP_ALIGNOF(_Tp) >= _LIBCPP_ALIGNOF(wchar_t),
                         int> = 0>
-_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp*
-__find_impl(_Tp* __first, _Tp* __last, const _Up& __value, _Proj&) {
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp* __find(_Tp* __first, _Tp* __last, const _Up& __value, _Proj&) {
   if (auto __ret = std::__constexpr_wmemchr(__first, __value, __last - __first))
     return __ret;
   return __last;
@@ -89,10 +87,10 @@ template <class _Tp,
                             is_signed<_Tp>::value == is_signed<_Up>::value,
                         int> = 0>
 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp*
-__find_impl(_Tp* __first, _Tp* __last, const _Up& __value, _Proj& __proj) {
+__find(_Tp* __first, _Tp* __last, const _Up& __value, _Proj& __proj) {
   if (__value < numeric_limits<_Tp>::min() || __value > numeric_limits<_Tp>::max())
     return __last;
-  return std::__find_impl(__first, __last, _Tp(__value), __proj);
+  return std::__find(__first, __last, _Tp(__value), __proj);
 }
 
 // __bit_iterator implementation
@@ -134,7 +132,7 @@ __find_bool(__bit_iterator<_Cp, _IsConst> __first, typename _Cp::size_type __n)
 
 template <class _Cp, bool _IsConst, class _Tp, class _Proj, __enable_if_t<__is_identity<_Proj>::value, int> = 0>
 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 __bit_iterator<_Cp, _IsConst>
-__find_impl(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value, _Proj&) {
+__find(__bit_iterator<_Cp, _IsConst> __first, __bit_iterator<_Cp, _IsConst> __last, const _Tp& __value, _Proj&) {
   if (static_cast<bool>(__value))
     return std::__find_bool<true>(__first, static_cast<typename _Cp::size_type>(__last - __first));
   return std::__find_bool<false>(__first, static_cast<typename _Cp::size_type>(__last - __first));
@@ -150,7 +148,7 @@ template <class _SegmentedIterator,
           class _Proj,
           __enable_if_t<__is_segmented_iterator<_SegmentedIterator>::value, int> = 0>
 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _SegmentedIterator
-__find_impl(_SegmentedIterator __first, _SegmentedIterator __last, const _Tp& __value, _Proj& __proj) {
+__find(_SegmentedIterator __first, _SegmentedIterator __last, const _Tp& __value, _Proj& __proj) {
   return std::__find_segment_if(std::move(__first), std::move(__last), __find_segment<_Tp>(__value), __proj);
 }
 
@@ -163,7 +161,7 @@ struct __find_segment {
   template <class _InputIterator, class _Proj>
   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR _InputIterator
   operator()(_InputIterator __first, _InputIterator __last, _Proj& __proj) const {
-    return std::__find_impl(__first, __last, __value_, __proj);
+    return std::__find(__first, __last, __value_, __proj);
   }
 };
 
@@ -173,7 +171,7 @@ _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _In
 find(_InputIterator __first, _InputIterator __last, const _Tp& __value) {
   __identity __proj;
   return std::__rewrap_iter(
-      __first, std::__find_impl(std::__unwrap_iter(__first), std::__unwrap_iter(__last), __value, __proj));
+      __first, std::__find(std::__unwrap_iter(__first), std::__unwrap_iter(__last), __value, __proj));
 }
 
 _LIBCPP_END_NAMESPACE_STD

libcxx/include/__algorithm/ranges_find.h

@@ -44,9 +44,9 @@ struct __fn {
     if constexpr (forward_iterator<_Iter>) {
       auto [__first_un, __last_un] = std::__unwrap_range(__first, std::move(__last));
       return std::__rewrap_range<_Sent>(
-          std::move(__first), std::__find_impl(std::move(__first_un), std::move(__last_un), __value, __proj));
+          std::move(__first), std::__find(std::move(__first_un), std::move(__last_un), __value, __proj));
     } else {
-      return std::__find_impl(std::move(__first), std::move(__last), __value, __proj);
+      return std::__find(std::move(__first), std::move(__last), __value, __proj);
     }
   }
 

libcxx/include/__string/char_traits.h

@@ -344,7 +344,7 @@ struct _LIBCPP_TEMPLATE_VIS char_traits<char16_t> {
   _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX17 const char_type*
   find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT {
     __identity __proj;
-    const char_type* __match = std::__find_impl(__s, __s + __n, __a, __proj);
+    const char_type* __match = std::__find(__s, __s + __n, __a, __proj);
     if (__match == __s + __n)
       return nullptr;
     return __match;
@@ -430,7 +430,7 @@ struct _LIBCPP_TEMPLATE_VIS char_traits<char32_t> {
   _LIBCPP_HIDE_FROM_ABI static _LIBCPP_CONSTEXPR_SINCE_CXX17 const char_type*
   find(const char_type* __s, size_t __n, const char_type& __a) _NOEXCEPT {
     __identity __proj;
-    const char_type* __match = std::__find_impl(__s, __s + __n, __a, __proj);
+    const char_type* __match = std::__find(__s, __s + __n, __a, __proj);
     if (__match == __s + __n)
       return nullptr;
     return __match;