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* |
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* $Id: gprnhran.F,v 3.1 2005/12/06 01:06:42 cafagna Exp $ |
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* |
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* $Log: gprnhran.F,v $ |
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* Revision 3.1 2005/12/06 01:06:42 cafagna |
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* Adding new magnetic field routines |
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* |
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* Revision 1.2 1996/04/10 16:31:41 mclareni |
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* NAME given dimension 2 |
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* |
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* Revision 1.1 1996/04/09 13:34:34 mclareni |
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* Add new routine rnhran.F (V149), also to Imakefile |
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* |
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* 27/05/2005 Sergio Bottai |
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* MODIFIED IN ORDER TO USE GEANT RANDOM NUMBERS |
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* |
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* |
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SUBROUTINE GPRNHRAN(Y,N,XLO,XWID,XRAN) |
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CHARACTER*8 NAME(2) |
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|
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DIMENSION Y(*) |
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|
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DATA IERR /0/ |
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DATA NAME /'GPRNHRAN','GPRNHPRE'/ |
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|
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NTRY=1 |
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IF(Y(N) .EQ. 1) GOTO 4 |
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WRITE(6,101) NAME(1),Y(N) |
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GOTO 5 |
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|
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ENTRY GPRNHPRE(Y,N) |
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NTRY=2 |
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|
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5 YTOT=0 |
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DO 1 I = 1,N |
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IF(Y(I) .LT. 0) GOTO 9 |
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YTOT=YTOT+Y(I) |
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1 Y(I)=YTOT |
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IF(YTOT .LE. 0) GOTO 9 |
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YINV=1/YTOT |
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DO 2 I = 1,N |
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2 Y(I)=Y(I)*YINV |
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Y(N)=1 |
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IF(NTRY .EQ. 2) RETURN |
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|
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c 4 CALL RANLUX(YR,1) |
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4 CALL GRNDM(YR,1) |
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|
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L=LOCATR(Y,N,YR) |
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IF(L .LT. 0) THEN |
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L=-L |
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XRAN=XLO+XWID*(L+((YR-Y(L))/(Y(L+1)-Y(L)))) |
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ELSEIF(L .EQ. 0) THEN |
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XRAN=XLO+XWID*(YR/Y(1)) |
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ELSE |
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XRAN=XLO+L*XWID |
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ENDIF |
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RETURN |
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|
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9 IERR=IERR+1 |
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IF(IERR .LT. 6) WRITE(6,102) NAME(NTRY) |
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WRITE(6,'(1X,10F13.7)') (Y(K),K=1,N) |
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XRAN=0 |
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RETURN |
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101 FORMAT(/7X,'+++++ CERN V149 ',A6,' : Y(N) = ',E15.6,' .NE. 1; ', |
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1 'Y(I) NOT IN CUMULATIVE FORM.'/) |
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102 FORMAT(/7X,'+++++ CERN V149 ',A6,' : NOT ALL VALUES Y(I) > 0'/) |
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END |
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