ported musescore#7309 : Fix tempo rounding issue in MusicXML export

igorkorsukov · Feb 17, 2021 · ba4d44e · ba4d44e
1 parent 4217739
commit ba4d44e
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/importexport/musicxml/internal/musicxml/exportxml.cpp b/src/importexport/musicxml/internal/musicxml/exportxml.cpp
@@ -4164,7 +4164,11 @@ void ExportMusicXml::tempoText(TempoText const* const text, int staff)
     if (staff) {
         _xml.tag("staff", staff);
     }
-    _xml.tagE(QString("sound tempo=\"%1\"").arg(QString::number(text->tempo() * 60.0)));
+    // Format tempo with maximum 2 decimal places, because in some MuseScore files tempo is stored
+    // imprecisely and this could cause rounding errors (e.g. 92 BPM would be saved as 91.9998).
+    qreal bpm = text->tempo() * 60.0;
+    qreal bpmRounded = round(bpm * 100) / 100;
+    _xml.tagE(QString("sound tempo=\"%1\"").arg(QString::number(bpmRounded)));
     _xml.etag();
 }