optimise

diff --git a/api/block_retrieve.go b/api/block_retrieve.go
index daf2800..2b2a80a 100644 (file)
--- a/api/block_retrieve.go
+++ b/api/block_retrieve.go
@@ -217,16 +217,7 @@ func (a *API) getHashRate(ins BlockReq) Response {
        }
 
        diffTime := block.Timestamp - preBlock.Timestamp
-       if diffTime <= 0 {
-               diffTime = 150
-       }
-
-       bigOne := big.NewInt(1)
-       oneLsh256 := new(big.Int).Lsh(big.NewInt(1), 256)
-
-       difficultyNum := difficulty.CompactToBig(block.Bits)
-       denominator := new(big.Int).Add(difficultyNum, bigOne)
-       hashCount := new(big.Int).Div(oneLsh256, denominator)
+       hashCount := difficulty.CalcWork(block.Bits)
        hashRate := new(big.Int).Div(hashCount, big.NewInt(int64(diffTime)))
 
        blockHash := block.Hash()