From 3def0b9609ccf511895fc22149bb49c978b6c740 Mon Sep 17 00:00:00 2001
From: Gav Wood <i@gavwood.com>
Date: Fri, 27 Nov 2015 13:17:28 +0100
Subject: [PATCH] Add uint constants.

---
 src/lib.rs  | 2 ++
 src/uint.rs | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index 44ffc106f..e15f33c56 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,8 @@ pub mod vector;
 
 //pub mod network;
 
+pub type Bytes = Vec<u8>;
+
 #[test]
 fn it_works() {
 }
diff --git a/src/uint.rs b/src/uint.rs
index bc333631b..c8e9d84de 100644
--- a/src/uint.rs
+++ b/src/uint.rs
@@ -461,6 +461,10 @@ impl From<U128> for U256 {
     }
 }
 
+pub const ZERO_U256: U256 = U256([0x00u64; 4]);
+pub const ONE_U256: U256 = U256([0x01u64, 0x00u64, 0x00u64, 0x00u64]);
+pub const BAD_U256: U256 = U256([0xffffffffffffffffu64; 4]);
+
 #[cfg(test)]
 mod tests {
     use uint::U256;