xo-arena: annex cmpresult.*pp from xo-alloc2

src/alloc2/CMakeLists.txt

@@ -5,7 +5,7 @@ set(SELF_SRCS
 
 #    AllocError.cpp
 #    AllocInfo.cpp
-    cmpresult.cpp
+#    cmpresult.cpp
 
     AAllocator.cpp
 #    ArenaConfig.cpp

src/alloc2/cmpresult.cpp

@@ -1,38 +0,0 @@
-/** @file cmpresult.cpp
- *
- *  @author Roland Conybeare, Dec 2025
- **/
-
-#include "cmpresult.hpp"
-#include <xo/indentlog/print/tag.hpp>
-#include <iostream>
-
-namespace xo {
-    namespace mm {
-        const char *
-        comparison2str(comparison x)
-        {
-            switch (x) {
-            case comparison::invalid:
-                break;
-            case comparison::comparable:
-                return "cmp";
-            case comparison::incomparable:
-                return "!cmp";
-            }
-
-            return "?comparison";
-        }
-
-        void
-        cmpresult::display(std::ostream & os) const
-        {
-            os << "<cmpresult "
-               << xtag("err", err_)
-               << xtag("cmp", cmp_)
-               << ">";
-        }
-    } /*namespace mm*/
-} /*namespace xo*/
-
-/* end cmpresult.cpp */