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mango-v4
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Settle pnl: Always grant the fractional fee on low health

This commit is contained in:
Christian Kamm 2023-02-15 11:26:43 +01:00
parent a3a6d9d636
commit 8f9700ed2d
1 changed files with 6 additions and 6 deletions
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12
programs/mango-v4/src/state/perp_market.rs
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@ -133,7 +133,7 @@ pub struct PerpMarket {
/// In native units of settlement token, given to each settle call above the /// In native units of settlement token, given to each settle call above the
/// settle_fee_amount_threshold. /// settle_fee_amount_threshold.
pub settle_fee_flat: f32, pub settle_fee_flat: f32,
/// Pnl settlement amount needed to be eligible for fees. /// Pnl settlement amount needed to be eligible for the flat fee.
pub settle_fee_amount_threshold: f32, pub settle_fee_amount_threshold: f32,
/// Fraction of pnl to pay out as fee if +pnl account has low health. /// Fraction of pnl to pay out as fee if +pnl account has low health.
pub settle_fee_fraction_low_health: f32, pub settle_fee_fraction_low_health: f32,
@ -394,15 +394,15 @@ impl PerpMarket {
}; };
// The settler receives a flat fee // The settler receives a flat fee
let flat_fee = I80F48::from_num(self.settle_fee_flat); let flat_fee = if settlement >= self.settle_fee_amount_threshold {
I80F48::from_num(self.settle_fee_flat)
// Fees only apply when the settlement is large enough
let fee = if settlement >= self.settle_fee_amount_threshold {
cm!(low_health_fee + flat_fee).min(settlement)
} else { } else {
I80F48::ZERO I80F48::ZERO
}; };
// Fees only apply when the settlement is large enough
let fee = cm!(low_health_fee + flat_fee).min(settlement);
// Safety check to prevent any accidental negative transfer // Safety check to prevent any accidental negative transfer
require!(fee >= 0, MangoError::SettlementAmountMustBePositive); require!(fee >= 0, MangoError::SettlementAmountMustBePositive);