Copy from Vc git the patch to fix integer comparison warning

math/vc/tests/memory.cpp

@@ -283,17 +283,19 @@ template<typename V> void testCCtor()
 
 template<typename V> void testCopyAssignment()
 {
+    typedef typename V::EntryType T;
+
     Memory<V, 99> m1;
     m1.setZero();
 
     Memory<V, 99> m2(m1);
     for (size_t i = 0; i < m2.entriesCount(); ++i) {
-        COMPARE(m2[i], 0);
+        COMPARE(m2[i], T(0));
         m2[i] += 1;
     }
     m1 = m2;
     for (size_t i = 0; i < m2.entriesCount(); ++i) {
-        COMPARE(m1[i], 1);
+        COMPARE(m1[i], T(1));
     }
 }