Used rouding like arm radios (#4683)

companion/src/eeprominterface.h

@@ -368,6 +368,11 @@ inline int divRoundClosest(const int n, const int d)
   return ((n < 0) ^ (d < 0)) ? ((n - d/2)/d) : ((n + d/2)/d);
 }
 
+inline int calcRESXto100(int x)
+{
+  return divRoundClosest(x*100, 1024);
+}
+
 #define CHECK_IN_ARRAY(T, index) ((unsigned int)index < DIM(T) ? T[(unsigned int)index] : "???")
 
 extern QList<EEPROMInterface *> eepromInterfaces;

companion/src/simulation/radiooutputswidget.cpp

@@ -313,7 +313,7 @@ void RadioOutputsWidget::setValues()
     for (ch = m_channelsMap.constBegin(); ch != m_channelsMap.constEnd(); ++ch) {
       if (ch.key() >= CPN_MAX_CHNOUT)
         continue;
-      ch.value().first->setText(QString("%1%").arg((outputs.chans[ch.key()] * 100 + 512) / 1024));
+      ch.value().first->setText(QString("%1%").arg(calcRESXto100(outputs.chans[ch.key()])));
       ch.value().second->setValue(qMin(1024, qMax(-1024, outputs.chans[ch.key()])));
     }
   }