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erc20-demurrage-token
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Rename divider to nano, expand supply value bit length

This commit is contained in:
nolash 2021-06-07 18:16:08 +02:00
parent 81ec2198aa
commit 1b1419c03b
Signed by: lash
GPG Key ID: 21D2E7BB88C2A746
3 changed files with 14 additions and 14 deletions
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2
python/erc20_demurrage_token/data/DemurrageTokenSingleCap.bin
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File diff suppressed because one or more lines are too long

2
python/examples/sim_noredistribute.py
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@ -17,7 +17,7 @@ settings.symbol = 'SIM'
settings.decimals = 6
settings.demurrage_level = int(decay_per_minute*(10**38))
#settings.period_minutes = 1 # 1 week in minutes
settings.period_minutes = 60*24*7
settings.period_minutes = 60*24*7*4
chain = 'evm:foochain:42'
cap = (10 ** 6) * (10 ** 12)

24
solidity/DemurrageTokenSingleCap.sol
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@ -12,7 +12,7 @@ contract DemurrageTokenSingleCap {
uint8 constant shiftRedistributionValue = 32;
uint256 constant maskRedistributionValue = 0x00000000000000000000000000000000000000ffffffffffffffffff00000000; // ((1 << 72) - 1) << 32
uint8 constant shiftRedistributionDemurrage = 140;
uint256 constant maskRedistributionDemurrage = 0x000000000000000000000000fffff00000000000000000000000000000000000; // ((1 << 20) - 1) << 140
uint256 constant maskRedistributionDemurrage = 0x000000000000000000000ffffffff00000000000000000000000000000000000; // ((1 << 20) - 1) << 140
// Account balances
mapping (address => uint256) account;
@ -50,7 +50,7 @@ contract DemurrageTokenSingleCap {
// 128 bit resolution of the demurrage divisor
// (this constant x 1000000 is contained within 128 bits)
uint256 constant ppmDivider = 100000000000000000000000000; // now nanodivider, 6 zeros less
uint256 constant nanoDivider = 100000000000000000000000000; // now nanodivider, 6 zeros less
// Timestamp of start of periods (time which contract constructor was called)
uint256 public immutable periodStart;
@ -108,10 +108,10 @@ contract DemurrageTokenSingleCap {
demurrageTimestamp = block.timestamp;
periodStart = demurrageTimestamp;
periodDuration = _periodMinutes * 60;
demurrageAmount = uint128(ppmDivider * 1000000000000); // Represents 38 decimal places
demurrageAmount = uint128(nanoDivider * 1000000000000); // Represents 38 decimal places
//demurragePeriod = 1;
taxLevel = _taxLevelMinute; // Represents 38 decimal places
bytes32 initialRedistribution = toRedistribution(0, 1000000, 0, 1);
bytes32 initialRedistribution = toRedistribution(0, 10000000000000000000, 0, 1);
redistributions.push(initialRedistribution);
// Misc settings
@ -147,7 +147,7 @@ contract DemurrageTokenSingleCap {
currentDemurragedAmount = uint128(decayBy(demurrageAmount, periodCount));
return (baseBalance * currentDemurragedAmount) / (ppmDivider * 1000000000000);
return (baseBalance * currentDemurragedAmount) / (nanoDivider * 1000000000000);
}
/// Balance unmodified by demurrage
@ -271,7 +271,7 @@ contract DemurrageTokenSingleCap {
}
function getDistribution(uint256 _supply, uint256 _demurrageAmount) public view returns (uint256) {
return _supply * (ppmDivider - (_demurrageAmount / 1000000000000));
return _supply * (nanoDivider - (_demurrageAmount / 1000000000000));
}
// Returns the amount sent to the sink address
@ -281,7 +281,7 @@ contract DemurrageTokenSingleCap {
redistributionSupply = toRedistributionSupply(_redistribution);
unit = getDistribution(redistributionSupply, demurrageAmount);
increaseBaseBalance(sinkAddress, toBaseAmount(unit / ppmDivider));
increaseBaseBalance(sinkAddress, toBaseAmount(unit / nanoDivider));
return unit;
}
@ -346,9 +346,9 @@ contract DemurrageTokenSingleCap {
demurrageCounts = demurrageCycles(periodTimestamp);
if (demurrageCounts > 0) {
nextRedistributionDemurrage = growBy(currentDemurrageAmount, demurrageCounts) / ppmDivider;
nextRedistributionDemurrage = growBy(currentDemurrageAmount, demurrageCounts) / nanoDivider;
} else {
nextRedistributionDemurrage = currentDemurrageAmount / ppmDivider;
nextRedistributionDemurrage = currentDemurrageAmount / nanoDivider;
}
nextRedistribution = toRedistribution(0, nextRedistributionDemurrage, totalSupply, nextPeriod);
@ -365,7 +365,7 @@ contract DemurrageTokenSingleCap {
uint256 truncatedTaxLevel;
valueFactor = 1000000;
truncatedTaxLevel = taxLevel / (ppmDivider * 1000000);
truncatedTaxLevel = taxLevel / (nanoDivider * 1000000);
for (uint256 i = 0; i < _period; i++) {
valueFactor = valueFactor + ((valueFactor * truncatedTaxLevel) / 1000000);
@ -380,7 +380,7 @@ contract DemurrageTokenSingleCap {
uint256 truncatedTaxLevel;
valueFactor = 1000000;
truncatedTaxLevel = taxLevel / (ppmDivider * 1000000);
truncatedTaxLevel = taxLevel / (nanoDivider * 1000000);
for (uint256 i = 0; i < _period; i++) {
valueFactor = valueFactor - ((valueFactor * truncatedTaxLevel) / 1000000);
@ -390,7 +390,7 @@ contract DemurrageTokenSingleCap {
// Inflates the given amount according to the current demurrage modifier
function toBaseAmount(uint256 _value) public view returns (uint256) {
return (_value * ppmDivider * 1000000000000) / demurrageAmount;
return (_value * nanoDivider * 1000000000000) / demurrageAmount;
}
// Implements ERC20, triggers tax and/or redistribution