Merge pull request #547 from ethcore/mining

Mining

util/bigint/src/uint.rs

@@ -1266,6 +1266,33 @@ impl From<U512> for U256 {
 	}
 }
 
+impl<'a> From<&'a U256> for U512 {
+	fn from(value: &'a U256) -> U512 {
+		let U256(ref arr) = *value;
+		let mut ret = [0; 8];
+		ret[0] = arr[0];
+		ret[1] = arr[1];
+		ret[2] = arr[2];
+		ret[3] = arr[3];
+		U512(ret)
+	}
+}
+
+impl<'a> From<&'a U512> for U256 {
+	fn from(value: &'a U512) -> U256 {
+		let U512(ref arr) = *value;
+		if arr[4] | arr[5] | arr[6] | arr[7] != 0 {
+			panic!("Overflow");
+		}
+		let mut ret = [0; 4];
+		ret[0] = arr[0];
+		ret[1] = arr[1];
+		ret[2] = arr[2];
+		ret[3] = arr[3];
+		U256(ret)
+	}
+}
+
 impl From<U256> for U128 {
 	fn from(value: U256) -> U128 {
 		let U256(ref arr) = value;

util/src/misc.rs

@@ -18,6 +18,7 @@
 
 use std::fs::File;
 use common::*;
+use rlp::{Stream, RlpStream};
 use target_info::Target;
 use rustc_version;
 
@@ -69,5 +70,19 @@ pub fn contents(name: &str) -> Result<Bytes, UtilError> {
 
 /// Get the standard version string for this software.
 pub fn version() -> String {
-	format!("Parity//{}-{}-{}/{}-{}-{}/rustc{}", env!("CARGO_PKG_VERSION"), short_sha(), commit_date().replace("-", ""), Target::arch(), Target::os(), Target::env(), rustc_version::version())
+	format!("Parity/v{}-{}-{}/{}-{}-{}/rustc{}", env!("CARGO_PKG_VERSION"), short_sha(), commit_date().replace("-", ""), Target::arch(), Target::os(), Target::env(), rustc_version::version())
+}
+
+/// Get the standard version data for this software.
+pub fn version_data() -> Bytes {
+	let mut s = RlpStream::new_list(4);
+	let v =
+		(u32::from_str(env!("CARGO_PKG_VERSION_MAJOR")).unwrap() << 16) +
+		(u32::from_str(env!("CARGO_PKG_VERSION_MINOR")).unwrap() << 8) +
+		u32::from_str(env!("CARGO_PKG_VERSION_PATCH")).unwrap();
+	s.append(&v);
+	s.append(&"Parity");
+	s.append(&format!("{}", rustc_version::version()));
+	s.append(&&Target::os()[0..2]);
+	s.out()
 }