add block_size and log_block_size methods to Address

src/block.rs

@@ -59,6 +59,14 @@ impl<S: Size> Address<S> {
             .and_then(|block| block.checked_add(self.offset))
     }
 
+    pub const fn block_size(&self) -> usize {
+        S::SIZE
+    }
+
+    pub const fn log_block_size(&self) -> u32 {
+        S::LOG_SIZE
+    }
+
     pub fn block(&self) -> usize {
         self.block
     }

src/lib.rs

@@ -2,6 +2,7 @@
 #![feature(specialization)]
 #![feature(swap_with_slice)]
 #![feature(macro_lifetime_matcher)]
+#![feature(const_fn)]
 #![cfg_attr(all(not(test), feature = "no_std"), no_std)]
 
 #[macro_use]