BUG: Reinstate reverse() function in UList

src/OpenFOAM/containers/Lists/UList/UList.H

@@ -348,6 +348,10 @@ void stableSort(UList<T>&, const Cmp&);
 template<class T>
 void shuffle(UList<T>&);
 
+// Reverse the first n elements of the list
+template<class T>
+inline void reverse(UList<T>&, const label n);
+
 // Reverse all the elements of the list
 template<class T>
 inline void reverse(UList<T>&);

src/OpenFOAM/containers/Lists/UList/UListI.H

@@ -25,7 +25,6 @@ License
 
 #include "error.H"
 #include "pTraits.H"
-#include "ListOps.H"
 #include "Swap.H"
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
@@ -319,10 +318,19 @@ inline bool Foam::UList<T>::empty() const
 
 // * * * * * * * * * * * * * * * Global Functions  * * * * * * * * * * * * * //
 
+template<class T>
+inline void Foam::reverse(UList<T>& ul, const label n)
+{
+    for (int i=0; i<n/2; i++)
+    {
+        Swap(ul[i], ul[n-1-i]);
+    }
+}
+
 template<class T>
 inline void Foam::reverse(UList<T>& ul)
 {
-    inplaceReverseList(ul);
+    reverse(ul, ul.size());
 }