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minor code change, no function impact

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This commit is contained in:
steven004 2019-10-31 18:54:13 +08:00
parent f35c8fe426
commit a917ffee16
2 changed files with 13 additions and 6 deletions
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5
build/params.go
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@ -97,6 +97,11 @@ const FilecoinPrecision = 1000000000000000000
// Blocks
const HalvingPeriodBlocks = 6 * 365 * 24 * 60 * 2
// constants for Weight calculation
// The ratio of weight contributed by short-term vs long-term factors in a given round
const WRatioNum = int64(1)
const WRatioDen = 2
// TODO: Move other important consts here
func init() {

14
chain/store/weight.go
View File

@ -11,6 +11,8 @@ import (
)
var zero = types.NewInt(0)
var wRatio_num = build.WRatioNum
var wRatio_den = build.WRatioDen
func (cs *ChainStore) Weight(ctx context.Context, ts *types.TipSet) (types.BigInt, error) {
if ts == nil {
@ -37,17 +39,17 @@ func (cs *ChainStore) Weight(ctx context.Context, ts *types.TipSet) (types.BigIn
tpow := types.BigFromBytes(ret.Return)
if tpow.GreaterThan(zero) {
log2P = int64(tpow.BitLen() - 1)
} else {
// Not really expect to be here ...
return types.EmptyInt, xerrors.Errorf("All power in the net is gone. The net is dead!")
}
out.Add(out, big.NewInt(log2P*256))
out.Add(out, big.NewInt(log2P << 8))
// (wFunction(totalPowerAtTipset(ts)) * len(ts.blocks) * wRatio_num * 2^8) / (e * wRatio_den)
wRatioNum := int64(1)
wRatioDen := 2
eWeight := big.NewInt((log2P * int64(len(ts.Blocks())) * wRatioNum) << 8)
eWeight.Div(eWeight, big.NewInt(int64(build.BlocksPerEpoch*wRatioDen)))
eWeight := big.NewInt((log2P * int64(len(ts.Blocks())) * wRatio_num) << 8)
eWeight.Div(eWeight, big.NewInt(int64(build.BlocksPerEpoch * wRatio_den)))
out.Add(out, eWeight)
return types.BigInt{Int: out}, nil