diff --git a/c_os/kernel/allocator/LinkedListAllocator.h b/c_os/kernel/allocator/LinkedListAllocator.h
index 9590e1e..4ac2a72 100755
--- a/c_os/kernel/allocator/LinkedListAllocator.h
+++ b/c_os/kernel/allocator/LinkedListAllocator.h
@@ -33,7 +33,7 @@ private:
     struct free_block* find_previous_block(struct free_block*);
 
 public:
-    LinkedListAllocator() {}
+    LinkedListAllocator() {};
 
     void init();
     void dump_free_memory();
diff --git a/c_os/lib/Math.cc b/c_os/lib/Math.cc
new file mode 100644
index 0000000..0647c40
--- /dev/null
+++ b/c_os/lib/Math.cc
@@ -0,0 +1,26 @@
+#include "Math.h"
+
+// NOTE: I added this file
+
+int min(int a, int b) {
+    if (a < b) { return a; }
+    return b;
+}
+
+int max(int a, int b) {
+    if (a < b) { return b; }
+    return a;
+}
+
+int abs(int a) {
+    if (a < 0) { return -a; }
+    return a;
+}
+
+int pow(int a, unsigned int b) {
+    int result = 1;
+    for (unsigned int i = 0; i < b; ++i) {
+        result = result * a;
+    }
+    return result;
+}
diff --git a/c_os/lib/Math.h b/c_os/lib/Math.h
new file mode 100644
index 0000000..fd0ee38
--- /dev/null
+++ b/c_os/lib/Math.h
@@ -0,0 +1,11 @@
+#ifndef __MATH_INCLUDE_H_
+#define __MATH_INCLUDE_H_
+
+// NOTE: I added this file
+
+int min(int, int);
+int max(int, int);
+int abs(int);
+int pow(int, unsigned int);
+
+#endif