(svn r12192) -Fix: clamp various town variables to 16bit prior to returning the value

src/core/math_func.hpp

@@ -168,6 +168,18 @@ static inline int32 ClampToI32(const int64 a)
 	return (int32)a;
 }
 
+/**
+ * Reduce an usigned 64-bit int to an unsigned 16-bit one
+ *
+ * @param a The 64-bit value to clamp
+ * @return The 64-bit value reduced to a 16-bit value
+ * @see ClampU(uint, uint, uint)
+ */
+static inline uint16 ClampToU16(const uint64 a)
+{
+	return min(a, UINT16_MAX);
+}
+
 /**
  * Returns the (absolute) difference between two (scalar) variables
  *