X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fviewport.cpp;h=d9be32c996ee142b44603d1c9097a9bcde93295a;hp=6b85e1b79d324c4788afc40b5903b02e0497d826;hb=f9abacf20c85;hpb=208c6fc371951fe74ba5a08a0950f2837eef8b7b

diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp
index 6b85e1b7..d9be32c9 100644
--- a/pv/view/viewport.cpp
+++ b/pv/view/viewport.cpp
@@ -82,7 +82,8 @@ void Viewport::drag()
 
 void Viewport::drag_by(const QPoint &delta)
 {
-	if (isnan(drag_offset_))
+	// Use std::isnan() instead of isnan(), the latter can cause issues.
+	if (std::isnan(drag_offset_))
 		return;
 
 	view_.set_scale_offset(view_.scale(), drag_offset_ -