Apply redistribution correction from singlecap to singlenocap contract

python/CHANGELOG

@@ -1,4 +1,7 @@
-- 0.0.2-pending
+- 0.0.9
+	* Fix wrong redistribution calculation in single nocap
+[...]
+- 0.0.2
 	* Move to chainlib-eth
 - 0.0.1-unreleased
 	* Interface for redistributed and non-redistributed, with or without cap

python/requirements.txt

@@ -1,3 +1,3 @@
-chainlib-eth~=0.0.15
+chainlib-eth~=0.0.27
-eth-erc20~=0.1.5
+eth-erc20~=0.1.10
-funga-eth~=0.5.1
+funga-eth~=0.5.6

python/setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = erc20-demurrage-token
-version = 0.0.8
+version = 0.0.9
 description = ERC20 token with redistributed continual demurrage
 author = Louis Holbrook
 author_email = dev@holbrook.no

python/tests/test_basic.py

@@ -107,10 +107,11 @@ class TestBasic(TestDemurrageDefault):
         r = self.rpc.do(o)
         demurrage_amount = c.parse_demurrage_amount(r)
         modifier_base = ((1000000 - self.tax_level) / 1000000) ** 10
+        logg.warning('mod base {}'.format(modifier_base))
         modifier = int(modifier_base * (10 ** 12))
 
         rounding_tolerance_nano = 4000000 # 0.000004% precision
-        demurrage_amount_truncate = int(demurrage_amount / (10 ** 26)) # equals 12 decimal places
+        demurrage_amount_truncate = int(demurrage_amount / (10 ** 16)) # equals 38 decimal places - 14 for the modifier magniture - 2 for percent int calc + 6 for token decimals (originally equalled 12 decimal places)
         self.assertGreaterEqual(modifier, demurrage_amount_truncate - rounding_tolerance_nano)
         self.assertLessEqual(modifier, demurrage_amount_truncate)
 

solidity/DemurrageTokenSingleCap.sol

@@ -311,6 +311,10 @@ contract DemurrageTokenSingleCap {
 
 	// Calculate and cache the demurrage value corresponding to the (period of the) time of the method call
 	function applyDemurrage() public returns (bool) {
+		return applyDemurrageLimited(0);
+	}
+
+	function applyDemurrageLimited(uint256 _rounds) public returns (bool) {
 		//uint128 epochPeriodCount;
 		uint256 periodCount;
 		uint256 lastDemurrageAmount;
@@ -323,6 +327,12 @@ contract DemurrageTokenSingleCap {
 			return false;
 		}
 		lastDemurrageAmount = demurrageAmount;
+		// safety limit for exponential calculation to ensure that we can always
+		// execute this code no matter how much time passes.			
+		if (_rounds > 0 && _rounds < periodCount) {
+			periodCount = _rounds;
+		}
+
 		demurrageAmount = uint128(decayBy(lastDemurrageAmount, periodCount));
 		//demurragePeriod = epochPeriodCount; 
 		demurrageTimestamp = demurrageTimestamp + (periodCount * 60);

solidity/DemurrageTokenSingleNocap.sol

@@ -278,7 +278,8 @@ contract DemurrageTokenSingleCap {
 	function getDistribution(uint256 _supply, uint256 _demurrageAmount) public view returns (uint256) {
 		uint256 difference;
 
-		difference = _supply * (resolutionFactor - _demurrageAmount); //(nanoDivider - ((resolutionFactor - _demurrageAmount) / nanoDivider));
+		//difference = _supply * (resolutionFactor - _demurrageAmount); //(nanoDivider - ((resolutionFactor - _demurrageAmount) / nanoDivider));
+		difference = _supply * (resolutionFactor - (_demurrageAmount * 10000000000)); //(nanoDivider - ((resolutionFactor - _demurrageAmount) / nanoDivider));
 		return difference / resolutionFactor;
 	}
 
@@ -307,6 +308,10 @@ contract DemurrageTokenSingleCap {
 
 	// Calculate and cache the demurrage value corresponding to the (period of the) time of the method call
 	function applyDemurrage() public returns (bool) {
+		return applyDemurrageLimited(0);
+	}
+
+	function applyDemurrageLimited(uint256 _rounds) public returns (bool) {
 		//uint128 epochPeriodCount;
 		uint256 periodCount;
 		uint256 lastDemurrageAmount;
@@ -319,6 +324,13 @@ contract DemurrageTokenSingleCap {
 			return false;
 		}
 		lastDemurrageAmount = demurrageAmount;
+	
+		// safety limit for exponential calculation to ensure that we can always
+		// execute this code no matter how much time passes.			
+		if (_rounds > 0 && _rounds < periodCount) {
+			periodCount = _rounds;
+		}
+
 		demurrageAmount = uint128(decayBy(lastDemurrageAmount, periodCount));
 		//demurragePeriod = epochPeriodCount; 
 		demurrageTimestamp = demurrageTimestamp + (periodCount * 60);