SUBROUTINE  : FREFIT
 
AUTHOR : I.O. Skillicorn
 
DATE : 27/09/96
 
LANGUAGE : FORTRAN
 
SHORT SUMMARY of PURPOSE:                                                
                                                                                
          Refit radial-based tracks including                                   
          planar information.                                                   
                                                                                
                                                                                
LIST and DESCRIPTION of INPUT VARIABLES/ARGUMENTS:                       
                                                                                
 Planar track segments:                                                         
          NFSEG segments/module                                                 
          Parameters(x0,y0,x',y') :- XYDXY in mm                                
 Radial-based tracks:                                                           
          IG tracks                                                             
          Hits/drift sign         :- IRN/SDN IRP/SDP                            
          Segments planars/radials:- ISGG LNK3                                  
          Parameters(phi',phi0)   :- RPCOSG,phzg                                
          Parameters(R',R0)       :- RPSING,ZIG                                 
                                                                                
                                                                                
LIST and DESCRIPTION of OUTPUT VARIABLES/ARGUMENTS:                      
                                                                                
                                                                                
 Radial-based tracks:                                                           
          IG tracks                                                             
          Hits/drift sign         :- IRN/SDN IRP/SDP                            
          Segments planars/radials:- ISGG LNK3                                  
          Parameters(phi',phi0)   :- RPCOSG,phzg                                
          Parameters(R',R0)       :- RPSING,ZIG                                 
                                                                                
 
CALLING TREE from FREFIT :
 
  CALL FTLFTW      == tree ==>
 
FUNCTIONS USED :
 
None
 
KEEP SEQUENCES USED :
 
 FRDIMS FH1WORK FPTVTX FRH3FT FPPRAM FPLSEG FPTFLG FPTPAR FDIFLG                                              
                                                                                                              
 

 
Comments from FREFIT