Update IsCoordinateInvalid

Author: axti98

PWGDQ/Core/DQConstants.h

@@ -44,8 +44,8 @@ inline constexpr int TPCCalibTypeEnd = 2;
 inline constexpr int InvalidDCA = 999;
 
 // Checks
-inline constexpr auto IsCoordinateValid = [](float value) constexpr -> bool {
-  return value >= 0.f;
+inline constexpr auto IsCoordinateInvalid = [](float value) constexpr -> bool {
+  return value < 0.f;
 };
 
 inline constexpr auto IsDCAInvalid = [](float value) constexpr -> bool {

PWGDQ/Core/VarManager.h

@@ -1353,7 +1353,7 @@ class VarManager : public TObject
 
   static void GetFwdShiftForY(float y, float& xShift, float& yShift, float& zShift)
   {
-    if (fgUseTopBottomShift && o2::dqconstants::IsCoordinateValid(y)) {
+    if (fgUseTopBottomShift && o2::dqconstants::IsCoordinateInvalid(y)) {
       xShift = fgxShiftFwdBottom;
       yShift = fgyShiftFwdBottom;
       zShift = fgzShiftFwdBottom;