Changes in external/TrackCovariance/TrkUtil.h [a617744:df408d2] in git

File:

• external/TrackCovariance/TrkUtil.h (modified) (3 diffs)

external/TrackCovariance/TrkUtil.h

@@ -20 +20 @@
         void SetBfield(Double_t Bz) { fBz = Bz; }
         TVectorD XPtoPar(TVector3 x, TVector3 p, Double_t Q);
-        TVector3 ParToX(TVectorD Par);
         TVector3 ParToP(TVectorD Par);
-        Double_t ParToQ(TVectorD Par);
         //
         // Conversion to ACTS parametrization
@@ -46 +44 @@
         static Double_t cSpeed()
         {
-                return TMath::C()*1.0e-9;       // Reduced speed of light
+                Double_t c = 2.99792458e8;      // speed of light m/sec
+                //return TMath::C()*1.0e-9;     // Incompatible with root5
+                return c*1.0e-9;                // Reduced speed of light       
         }
         //
@@ -52 +52 @@
         //
         static TVectorD XPtoPar(TVector3 x, TVector3 p, Double_t Q, Double_t Bz);
+        static TVector3 ParToX(TVectorD Par);                           // position of minimum distance from z axis
+        static TVector3 ParToP(TVectorD Par, Double_t Bz);      // Get Momentum from track parameters
+        static Double_t ParToQ(TVectorD Par);                           // Get track charge
         //
         // Conversion from meters to mm