diff --git a/include/algorithm b/include/algorithm
index 303ec7d..3b74a6b 100644
--- a/include/algorithm
+++ b/include/algorithm
@@ -975,7 +975,7 @@
 }
 
 template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator1
+_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator1
 __find_end(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
            _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred,
            random_access_iterator_tag, random_access_iterator_tag)
@@ -1041,8 +1041,8 @@
 // find_first_of
 
 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
-_ForwardIterator1
-find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator1
+__find_first_of_ce(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
               _ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred)
 {
     for (; __first1 != __last1; ++__first1)
@@ -1052,6 +1052,16 @@
     return __last1;
 }
 
+
+template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
+inline _LIBCPP_INLINE_VISIBILITY
+_ForwardIterator1
+find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
+              _ForwardIterator2 __first2, _ForwardIterator2 __last2, _BinaryPredicate __pred)
+{
+    return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
+}
+
 template <class _ForwardIterator1, class _ForwardIterator2>
 inline _LIBCPP_INLINE_VISIBILITY
 _ForwardIterator1
@@ -1060,7 +1070,7 @@
 {
     typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
     typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
-    return _VSTD::find_first_of(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
+    return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
 }
 
 // adjacent_find
@@ -1440,7 +1450,7 @@
 }
 
 template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
-_RandomAccessIterator1
+_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator1
 __search(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1,
            _RandomAccessIterator2 __first2, _RandomAccessIterator2 __last2, _BinaryPredicate __pred,
            random_access_iterator_tag, random_access_iterator_tag)