diff --git a/Tests/Marco.cpp b/Tests/Marco.cpp
index 189e9cf..7b3ea81 100644
--- a/Tests/Marco.cpp
+++ b/Tests/Marco.cpp
@@ -102,6 +102,27 @@ __constructor void TestMacros()
             pgs++;
         }
     }
+
+    {
+        debug("Testing ROUND_UP and ROUND_DOWN");
+        int x = 0x101;
+        int y = 0x100;
+        int result;
+
+        result = ROUND_UP(x, y);
+        if (result != 0x200)
+        {
+            error("ERROR: ROUND_UP failed: %d != 0x200\n", result);
+            inf_loop;
+        }
+
+        result = ROUND_DOWN(x, y);
+        if (result != 0x100)
+        {
+            error("ERROR: ROUND_DOWN failed: %d != 0x100\n", result);
+            inf_loop;
+        }
+    }
 }
 
 #endif // DEBUG
diff --git a/include/types.h b/include/types.h
index 2ef2f12..53a27ce 100644
--- a/include/types.h
+++ b/include/types.h
@@ -81,6 +81,9 @@ typedef __builtin_va_list va_list;
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
 
+#define ROUND_UP(x, y) (((x) + (y)-1) & ~((y)-1))
+#define ROUND_DOWN(x, y) ((x) & ~((y)-1))
+
 #define VPOKE(type, address) (*((volatile type *)(address)))
 #define POKE(type, address) (*((type *)(address)))
 
@@ -342,10 +345,13 @@ typedef uint48_t uint_fast48_t;
 #define __min_vector_width(x) __attribute__((min_vector_width(x)))
 
 // sanitizer
+#define __no_sanitize(x) __attribute__((no_sanitize(x)))
 #define __no_sanitize_address __attribute__((no_sanitize_address))
-#define __no_sanitize_undefined __attribute__((no_sanitize_undefined))
+/** @brief The no_address_safety_analysis is a deprecated alias of the no_sanitize_address attribute, new code should use no_sanitize_address. */
 #define __no_address_safety_analysis __attribute__((no_address_safety_analysis))
 #define __no_sanitize_thread __attribute__((no_sanitize_thread))
+#define __no_sanitize_undefined __attribute__((no_sanitize_undefined))
+#define __no_sanitize_coverage __attribute__((no_sanitize_coverage))
 
 #define __synchronize __sync_synchronize()
 #define __sync __synchronize