// setChildTarget computes the target of a blockNode's child. All children of a node
// have the same target.
func (cs *ConsensusSet) setChildTarget(blockMap *bolt.Bucket, pb *processedBlock) {
// Fetch the parent block.
var parent processedBlock
parentBytes := blockMap.Get(pb.Block.ParentID[:])
err := encoding.Unmarshal(parentBytes, &parent)
if build.DEBUG && err != nil {
panic(err)
}
if pb.Height%(types.TargetWindow/2) != 0 {
pb.ChildTarget = parent.ChildTarget
return
}
adjustment := clampTargetAdjustment(cs.targetAdjustmentBase(blockMap, pb))
adjustedRatTarget := new(big.Rat).Mul(parent.ChildTarget.Rat(), adjustment)
pb.ChildTarget = types.RatToTarget(adjustedRatTarget)
}
// setTarget computes the target of a blockNode's child. All children of a node
// have the same target.
func (bn *blockNode) setChildTarget() {
adjustment := clampTargetAdjustment(bn.targetAdjustmentBase())
adjustedRatTarget := new(big.Rat).Mul(bn.parent.childTarget.Rat(), adjustment)
bn.childTarget = types.RatToTarget(adjustedRatTarget)
}