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eth_getwork implemented.

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This commit is contained in:
Gav Wood
2016-02-29 19:30:13 +01:00
parent 2c32b0fc1c
commit ffc5c2ea7b
9 changed files with 78 additions and 14 deletions
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14
ethcore/src/ethereum/ethash.rs
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@@ -144,9 +144,9 @@ impl Engine for Ethash {
}
let difficulty = Ethash::boundary_to_difficulty(&Ethash::from_ethash(quick_get_difficulty(
&Ethash::to_ethash(header.bare_hash()),
header.nonce().low_u64(),
&Ethash::to_ethash(header.mix_hash()))));
&Ethash::to_ethash(header.bare_hash()),
header.nonce().low_u64(),
&Ethash::to_ethash(header.mix_hash()) )));
if difficulty < header.difficulty {
return Err(From::from(BlockError::InvalidProofOfWork(OutOfBounds { min: Some(header.difficulty), max: None, found: difficulty })));
}
@@ -241,10 +241,16 @@ impl Ethash {
target
}
fn boundary_to_difficulty(boundary: &H256) -> U256 {
/// Convert an Ethash boundary to its original difficulty. Basically just `f(x) = 2^256 / x`.
pub fn boundary_to_difficulty(boundary: &H256) -> U256 {
U256::from((U512::one() << 256) / x!(U256::from(boundary.as_slice())))
}
/// Convert an Ethash difficulty to the target boundary. Basically just `f(x) = 2^256 / x`.
pub fn difficulty_to_boundary(difficulty: &U256) -> H256 {
x!(U256::from((U512::one() << 256) / x!(difficulty)))
}
fn to_ethash(hash: H256) -> EH256 {
unsafe { mem::transmute(hash) }
}