rewards

var (
	Ctx    = decimal.Context128
	One    = decimal.WithContext(Ctx).SetUint64(1)
	LogTwo = Ctx.Log(decimal.WithContext(Ctx), decimal.WithContext(Ctx).SetUint64(2))

	// TenYears contains one extra layer to account for the effective genesis (zero) layer.
	TenYears          = decimal.WithContext(Ctx).SetUint64(10*constants.OneYear + 1)
	IssuanceNum       = decimal.WithContext(Ctx).SetUint64(constants.TenYearTarget - constants.TotalVaulted)
	IssuanceDenom     = decimal.WithContext(Ctx).SetUint64(constants.TotalSubsidy)
	IssuanceFrac      = Ctx.Sub(decimal.WithContext(Ctx), One, Ctx.Quo(decimal.WithContext(Ctx), IssuanceNum, IssuanceDenom))
	HalfLife          = Ctx.Mul(decimal.WithContext(Ctx), decimal.WithContext(Ctx).Neg(TenYears), Ctx.Quo(decimal.WithContext(Ctx), LogTwo, Ctx.Log(decimal.WithContext(Ctx), IssuanceFrac)))
	Lambda            = Ctx.Quo(decimal.WithContext(Ctx), LogTwo, HalfLife)
	NegLambda         = decimal.WithContext(Ctx).Neg(Lambda)
	TotalSubsidy      = decimal.WithContext(Ctx).SetUint64(constants.TotalSubsidy)
	FinalIssuanceFrac = Ctx.Quo(decimal.WithContext(Ctx), Ctx.Sub(decimal.WithContext(Ctx), TotalSubsidy, One), TotalSubsidy)
	FinalLayer        = Ctx.Quo(decimal.WithContext(Ctx), Ctx.Log(decimal.WithContext(Ctx), Ctx.Sub(decimal.WithContext(Ctx), One, FinalIssuanceFrac)), NegLambda)
)