| 1 | DOUBLE PRECISION FUNCTION PCL( A,B )
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| 2 |
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| 3 | C-----------------------------------------------------------------------
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| 4 | C P (MOMENTUM) C(ENTER OF MASS) L(ONGITUDINAL)
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| 5 | C
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| 6 | C RANDOM SELECTION OF LONGITUDINAL MOMENTUM IN CENTER OF MASS
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| 7 | C EXPONENTIAL DISTRIBUTION PCL(X) = EXP(-X/A)
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| 8 | C THIS FUNCTION IS CALLED FORM HMESON, ISOBAR, AND VHMESO
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| 9 | C ARGUMENTS:
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| 10 | C A = MEAN VALUE OF DISTRIBUTION
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| 11 | C B = CUT FOR LIMITING MOMENTUM
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| 12 | C
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| 13 | C CHANGES : J. KNAPP IK1 FZK KARLSRUHE
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| 14 | C-----------------------------------------------------------------------
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| 15 |
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| 16 | IMPLICIT DOUBLE PRECISION (A-H,O-Z)
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| 17 | *KEEP,RANDPA.
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| 18 | COMMON /RANDPA/ FAC,U1,U2,RD,NSEQ,ISEED,KNOR
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| 19 | DOUBLE PRECISION FAC,U1,U2
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| 20 | REAL RD(3000)
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| 21 | INTEGER ISEED(103,10),NSEQ
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| 22 | LOGICAL KNOR
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| 23 | *KEEP,RUNPAR.
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| 24 | COMMON /RUNPAR/ FIXHEI,THICK0,HILOECM,HILOELB,
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| 25 | * STEPFC,NRRUN,NSHOW,PATAPE,MONIIN,
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| 26 | * MONIOU,MDEBUG,NUCNUC,
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| 27 | * CETAPE,
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| 28 | * SHOWNO,ISHW,NOPART,NRECS,NBLKS,MAXPRT,NDEBDL,
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| 29 | * N1STTR,MDBASE,
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| 30 | * DEBDEL,DEBUG,FDECAY,FEGS,FIRSTI,FIXINC,FIXTAR,
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| 31 | * FIX1I,FMUADD,FNKG,FPRINT,FDBASE
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| 32 | * ,GHEISH,GHESIG
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| 33 | COMMON /RUNPAC/ DSN,HOST,USER
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| 34 | DOUBLE PRECISION FIXHEI,THICK0,HILOECM,HILOELB
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| 35 | REAL STEPFC
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| 36 | INTEGER NRRUN,NSHOW,PATAPE,MONIIN,MONIOU,MDEBUG,NUCNUC,
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| 37 | * SHOWNO,ISHW,NOPART,NRECS,NBLKS,MAXPRT,NDEBDL,
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| 38 | * N1STTR,MDBASE
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| 39 | INTEGER CETAPE
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| 40 | CHARACTER*79 DSN
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| 41 | CHARACTER*20 HOST,USER
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| 42 |
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| 43 | LOGICAL DEBDEL,DEBUG,FDECAY,FEGS,FIRSTI,FIXINC,FIXTAR,
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| 44 | * FIX1I,FMUADD,FNKG,FPRINT,FDBASE
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| 45 | * ,GHEISH,GHESIG
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| 46 | *KEND.
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| 47 |
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| 48 | C-----------------------------------------------------------------------
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| 49 |
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| 50 | C IF ( DEBUG ) WRITE(MDEBUG,*) 'PCL : A,B=',SNGL(A),SNGL(B)
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| 51 |
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| 52 | 1 CONTINUE
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| 53 | CALL RMMAR( RD,1,1 )
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| 54 | PCL = -A * LOG ( RD(1) )
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| 55 | IF ( PCL .GT. B ) GOTO 1
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| 56 | IF ( DEBUG ) WRITE(MDEBUG,*) 'PCL : PCL =',SNGL(PCL)
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| 57 |
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| 58 | RETURN
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| 59 | END
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