BOSS_7.0.2: /home/bes3soft/bes3soft/Boss/7.0.2/dist/7.0.2/Reconstruction/MdcPatRec/MdcTrkRecon/MdcTrkRecon-00-03-45/MdcTrkRecon/mdcWrapAng.h Source File

00001 // mdcWrapAng.h
00002 /* Handle wrap-around problems in phi: phi1 is the reference angle, and phi2 
00003    is adjusted, if necessary, so that it is close to phi1.  The assumption is 
00004    that phi1 and phi2 are in fact supposed to be close to one another. */
00005 
00006 #ifndef MDCWRAPANG_H
00007 #define MDCWRAPANG_H
00008 
00009 #include "MdcGeom/Constants.h"
00010 static const double &twpi = Constants::twoPi;
00011 
00012 inline double mdcWrapAng( double phi1, double phi2) {
00013 
00014   double diff;
00015 
00016   diff = phi2 - phi1;
00017   if (diff > 0.5*twpi) phi2 -= twpi;
00018   else if (diff < -0.5*twpi) phi2 += twpi;
00019 
00020   return phi2;
00021 }
00022 #endif