Merge pull request #7216 from freqtrade/precise_calcs

Precise calcs

freqtrade/optimize/backtesting.py

@@ -131,6 +131,7 @@ class Backtesting:
             self.fee = config['fee']
         else:
             self.fee = self.exchange.get_fee(symbol=self.pairlists.whitelist[0])
+        self.precision_mode = self.exchange.precisionMode
 
         self.timerange = TimeRange.parse_timerange(
             None if self.config.get('timerange') is None else str(self.config.get('timerange')))
@@ -849,6 +850,9 @@ class Backtesting:
                     trading_mode=self.trading_mode,
                     leverage=leverage,
                     # interest_rate=interest_rate,
+                    amount_precision=self.exchange.get_precision_amount(pair),
+                    price_precision=self.exchange.get_precision_price(pair),
+                    precision_mode=self.precision_mode,
                     orders=[],
                 )