correctly calculate rewards for uncles and nephews

Author: jwasinger

lib/runBlock.js

@@ -189,7 +189,9 @@ module.exports = function (opts, cb) {
     var ommers = block.uncleHeaders
     // pay each ommer
     ommers.forEach(rewardOmmer)
+
     // calculate nibling reward
+    var niblingReward = minerReward.div(new BN(32))
     var totalNiblingReward = niblingReward.mul(new BN(ommers.length))
     minerAccount = self.stateManager.cache.get(block.header.coinbase)
     // give miner the block reward
@@ -203,7 +205,12 @@ module.exports = function (opts, cb) {
   function rewardOmmer (ommer) {
     // calculate reward
     var heightDiff = new BN(block.header.number).sub(new BN(ommer.number))
-    var reward = minerReward.sub(ommerReward.mul(heightDiff))
+    var reward = ((new BN(8)).sub(heightDiff)).mul(minerReward.div(new BN(8)))
+
+    if(reward.lt(new BN(0))) {
+      reward = new BN(0)
+    }
+
     // credit miners account
     var ommerAccount = self.stateManager.cache.get(ommer.coinbase)
     ommerAccount.balance = reward.add(new BN(ommerAccount.balance))