[u/mrichter/AliRoot.git] / GEANT321 / gtrak / gtnino.F

*
* $Id$
*
* $Log$
* Revision 1.1.1.1  1995/10/24 10:21:44  cernlib
* Geant
*
*
#include "geant321/pilot.h"
*CMZ :  3.21/04 01/11/94  16.25.59  by  S.Ravndal
*-- Author :
      SUBROUTINE GTNINO
C.
C.    ******************************************************************
C.    *                                                                *
C.    *       Tracking routine for "GEANTINO" type tracks              *
C.    *                                                                *
C.    *    ==>Called by : GTRACK                                       *
C.    *       Author    R.Brun, F.Bruyant                              *
C.    *                                                                *
C.    ******************************************************************
C.
#include "geant321/gconsp.inc"
#include "geant321/gctmed.inc"
#include "geant321/gctrak.inc"
#if defined(CERNLIB_DEBUG)
#include "geant321/gcunit.inc"
#endif
#if !defined(CERNLIB_SINGLE)
      PARAMETER (EPSMAC=1.E-6)
#endif
#if defined(CERNLIB_SINGLE)
      PARAMETER (EPSMAC=1.E-11)
#endif
C.
C.    ------------------------------------------------------------------
C.
      STEP = STEMAX
      IPROC = 103
      CALL GTNEXT
      IF (IGNEXT.NE.0) THEN
         STEP = SNEXT + PREC
         IPROC=0
         INWVOL= 2
         NMEC =  1
         LMEC(1)=1
*
* *** Linear transport
*
         DO 10 I = 1,3
            VECTMP  = VECT(I) +STEP*VECT(I+3)
            IF(VECTMP.EQ.VECT(I)) THEN
*
* *** Correct for machine precision
*
               IF(VECT(I+3).NE.0.) THEN
                  VECTMP = VECT(I)+ABS(VECT(I))*SIGN(1.,VECT(I+3))*
     +            EPSMAC
*                 IF(NMEC.GT.0) THEN
*                    IF(LMEC(NMEC).EQ.32) NMEC=NMEC-1
*                 ENDIF
*                 NMEC=NMEC+1
*                 LMEC(NMEC)=32
#if defined(CERNLIB_DEBUG)
                  WRITE(CHMAIL, 10000)
                  CALL GMAIL(0,0)
                  WRITE(CHMAIL, 10100) GEKIN, NUMED, STEP, SNEXT
                  CALL GMAIL(0,0)
10000 FORMAT(' Boundary correction in GTNINO: ',
     +       '    GEKIN      NUMED       STEP      SNEXT')
10100 FORMAT(31X,E10.3,1X,I10,1X,E10.3,1X,E10.3,1X)
#endif
               ENDIF
            ENDIF
            VECT(I) = VECTMP
   10    CONTINUE
      ELSE
         DO 20 I = 1,3
            VECT(I)  = VECT(I) +STEP*VECT(I+3)
   20    CONTINUE
      ENDIF
      SLENG = SLENG +STEP
*
* *** Update time of flight
*
      TOFG = TOFG +STEP/CLIGHT
*
      IF(IPROC.NE.0) THEN
         NMEC=NMEC+1
         LMEC(NMEC)=IPROC
      ENDIF
      END
Commit	Line	Data
fe4da5cc	1	*
	2	* $Id$
	3	*
	4	* $Log$
	5	* Revision 1.1.1.1 1995/10/24 10:21:44 cernlib
	6	* Geant
	7	*
	8	*
	9	#include "geant321/pilot.h"
	10	*CMZ : 3.21/04 01/11/94 16.25.59 by S.Ravndal
	11	*-- Author :
	12	SUBROUTINE GTNINO
	13	C.
	14	C. ******************************************************************
	15	C. * *
	16	C. * Tracking routine for "GEANTINO" type tracks *
	17	C. * *
	18	C. * ==>Called by : GTRACK *
	19	C. * Author R.Brun, F.Bruyant *
	20	C. * *
	21	C. ******************************************************************
	22	C.
	23	#include "geant321/gconsp.inc"
	24	#include "geant321/gctmed.inc"
	25	#include "geant321/gctrak.inc"
	26	#if defined(CERNLIB_DEBUG)
	27	#include "geant321/gcunit.inc"
	28	#endif
	29	#if !defined(CERNLIB_SINGLE)
	30	PARAMETER (EPSMAC=1.E-6)
	31	#endif
	32	#if defined(CERNLIB_SINGLE)
	33	PARAMETER (EPSMAC=1.E-11)
	34	#endif
	35	C.
	36	C. ------------------------------------------------------------------
	37	C.
	38	STEP = STEMAX
	39	IPROC = 103
	40	CALL GTNEXT
	41	IF (IGNEXT.NE.0) THEN
	42	STEP = SNEXT + PREC
	43	IPROC=0
	44	INWVOL= 2
	45	NMEC = 1
	46	LMEC(1)=1
	47	*
	48	* *** Linear transport
	49	*
	50	DO 10 I = 1,3
	51	VECTMP = VECT(I) +STEP*VECT(I+3)
	52	IF(VECTMP.EQ.VECT(I)) THEN
	53	*
	54	* *** Correct for machine precision
	55	*
	56	IF(VECT(I+3).NE.0.) THEN
	57	VECTMP = VECT(I)+ABS(VECT(I))SIGN(1.,VECT(I+3))
	58	+ EPSMAC
	59	* IF(NMEC.GT.0) THEN
	60	* IF(LMEC(NMEC).EQ.32) NMEC=NMEC-1
	61	* ENDIF
	62	* NMEC=NMEC+1
	63	* LMEC(NMEC)=32
	64	#if defined(CERNLIB_DEBUG)
65	WRITE(CHMAIL, 10000)
66	CALL GMAIL(0,0)
67	WRITE(CHMAIL, 10100) GEKIN, NUMED, STEP, SNEXT
68	CALL GMAIL(0,0)
69	10000 FORMAT(' Boundary correction in GTNINO: ',
70	+ ' GEKIN NUMED STEP SNEXT')
71	10100 FORMAT(31X,E10.3,1X,I10,1X,E10.3,1X,E10.3,1X)
72	#endif
73	ENDIF
74	ENDIF
75	VECT(I) = VECTMP
76	10 CONTINUE
77	ELSE
78	DO 20 I = 1,3
79	VECT(I) = VECT(I) +STEP*VECT(I+3)
80	20 CONTINUE
81	ENDIF
82	SLENG = SLENG +STEP
83	*
84	* *** Update time of flight
85	*
86	TOFG = TOFG +STEP/CLIGHT
87	*
88	IF(IPROC.NE.0) THEN
89	NMEC=NMEC+1
90	LMEC(NMEC)=IPROC
91	ENDIF
92	END