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core: check for parent in calc TD. TD = (N != 0 == parent.TD) || (== D)

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obscuren 2015-04-30 14:55:21 +02:00
parent 28b39267d9
commit e4dba36892
1 changed files with 4 additions and 0 deletions
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4
core/chain_manager.go
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@ -49,6 +49,10 @@ func CalcDifficulty(block, parent *types.Header) *big.Int {
}
func CalculateTD(block, parent *types.Block) *big.Int {
if parent == nil {
return block.Difficulty()
}
td := new(big.Int).Add(parent.Td, block.Header().Difficulty)
return td