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-rw-r--r--libs/surfaces/mackie/mackie_jog_wheel.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/libs/surfaces/mackie/mackie_jog_wheel.cc b/libs/surfaces/mackie/mackie_jog_wheel.cc
index 4ba01c8cf3..d05eb23638 100644
--- a/libs/surfaces/mackie/mackie_jog_wheel.cc
+++ b/libs/surfaces/mackie/mackie_jog_wheel.cc
@@ -1,3 +1,5 @@
+#include <cmath>
+
#include "mackie_jog_wheel.h"
#include "mackie_control_protocol.h"
@@ -8,6 +10,7 @@
#include <algorithm>
using namespace Mackie;
+using std::isnan;
JogWheel::JogWheel( MackieControlProtocol & mcp )
: _mcp( mcp )