移除净值读取定点重复转换

crates/fidc-core/src/portfolio.rs

@@ -907,7 +907,7 @@ impl PortfolioState {
     }
 
     pub fn total_equity(&self) -> f64 {
-        self.total_equity_money().to_f64()
+        self.cash.to_f64() + self.market_value() - self.cash_liabilities.to_f64()
     }
 
     pub fn total_value(&self) -> f64 {
@@ -1112,25 +1112,6 @@ impl PortfolioState {
             })
     }
 
-    fn market_value_money(&self) -> FixedMoney {
-        self.positions
-            .values()
-            .fold(FixedMoney::ZERO, |total, position| {
-                let value = Self::fixed_money(position.market_value(), "position market value")
-                    .expect("position market value must be finite fixed-point money");
-                total
-                    .checked_add(value)
-                    .expect("fixed-point market value overflow")
-            })
-    }
-
-    fn total_equity_money(&self) -> FixedMoney {
-        self.cash
-            .checked_add(self.market_value_money())
-            .and_then(|value| value.checked_sub(self.cash_liabilities))
-            .expect("fixed-point total equity overflow")
-    }
-
     fn refresh_dividend_receivables(&mut self) {
         let mut per_symbol = BTreeMap::<String, f64>::new();
         for receivable in &self.cash_receivables {
@@ -1147,8 +1128,8 @@ impl PortfolioState {
     ) -> Result<(), String> {
         if unit_net_value_before > 0.0 && unit_net_value_before.is_finite() {
             let unit_nav = Self::fixed_money(unit_net_value_before, "unit net value")?;
-            let units_raw = self
+            let total_equity = Self::fixed_money(self.total_equity(), "total equity")?;
-                .total_equity_money()
+            let units_raw = total_equity
                 .raw()
                 .checked_mul(MONEY_SCALE)
                 .and_then(|value| value.checked_div(unit_nav.raw()))