Fix crash starting at heliport.

[flightgear.git] / src / Autopilot / inputvalue.hxx

diff --git a/src/Autopilot/inputvalue.hxx b/src/Autopilot/inputvalue.hxx
index bdf0b6382e3757f88dc2b784cdd45481513d274e..c85bfd74a7f164b72cf55eccc54d5f388286e365 100644 (file)
--- a/src/Autopilot/inputvalue.hxx
+++ b/src/Autopilot/inputvalue.hxx
@@ -45,7 +45,8 @@ private:
      InputValue_ptr maxPeriod; // The maximum value of the period
 public:
      PeriodicalValue( SGPropertyNode_ptr node );
-     double normalize( double value );
+     double normalize( double value ) const;
+     double normalizeSymmetric( double value ) const;
 };
 
 /**