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Fixed difficulty 

Difficulty was broken when refactored.
This commit is contained in:
obscuren 2015-01-18 15:45:54 +01:00
parent 24613a60dc
commit 7394ee7c72
2 changed files with 5 additions and 7 deletions
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3
core/block_processor.go
View File

@ -242,8 +242,7 @@ func (sm *BlockProcessor) ValidateBlock(block, parent *types.Block) error {
} }
expd := CalcDifficulty(block, parent) expd := CalcDifficulty(block, parent)
if expd.Cmp(block.Header().Difficulty) < 0 { if expd.Cmp(block.Header().Difficulty) != 0 {
fmt.Println("parent\n", parent)
return fmt.Errorf("Difficulty check failed for block %v, %v", block.Header().Difficulty, expd) return fmt.Errorf("Difficulty check failed for block %v, %v", block.Header().Difficulty, expd)
} }

9
core/chain_manager.go
View File

@ -23,12 +23,11 @@ type StateQuery interface {
func CalcDifficulty(block, parent *types.Block) *big.Int { func CalcDifficulty(block, parent *types.Block) *big.Int {
diff := new(big.Int) diff := new(big.Int)
bh, ph := block.Header(), parent.Header() adjust := new(big.Int).Rsh(parent.Difficulty(), 10)
adjust := new(big.Int).Rsh(ph.Difficulty, 10) if block.Time() >= parent.Time()+8 {
if bh.Time >= ph.Time+13 { diff.Sub(parent.Difficulty(), adjust)
diff.Sub(ph.Difficulty, adjust)
} else { } else {
diff.Add(ph.Difficulty, adjust) diff.Add(parent.Difficulty(), adjust)
} }
return diff return diff