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auto_dsig1.f
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DOUBLE PRECISION FUNCTION DSIG1(PP,WGT,IMODE)
C ****************************************************
C
C Generated by MadGraph5_aMC@NLO v. 3.5.2_lo_vect, 2023-11-08
C By the MadGraph5_aMC@NLO Development Team
C Visit launchpad.net/madgraph5 and amcatnlo.web.cern.ch
C
C Process: g g > t t~ WEIGHTED<=2 @1
C
C RETURNS DIFFERENTIAL CROSS SECTION
C Input:
C pp 4 momentum of external particles
C wgt weight from Monte Carlo
C imode 0 run, 1 init, 2 reweight,
C 3 finalize, 4 only PDFs,
C 5 squared amplitude only (never
C generate events)
C Output:
C Amplitude squared and summed
C ****************************************************
IMPLICIT NONE
C
C CONSTANTS
C
INCLUDE 'genps.inc'
INCLUDE 'nexternal.inc'
INCLUDE 'maxconfigs.inc'
INCLUDE 'maxamps.inc'
DOUBLE PRECISION CONV
PARAMETER (CONV=389379.66*1000) !CONV TO PICOBARNS
REAL*8 PI
PARAMETER (PI=3.1415926D0)
C
C ARGUMENTS
C
DOUBLE PRECISION PP(0:3,NEXTERNAL), WGT
INTEGER IMODE
C
C LOCAL VARIABLES
C
INTEGER I,ITYPE,LP,IPROC
DOUBLE PRECISION QSCALE
DOUBLE PRECISION G1
DOUBLE PRECISION G2
DOUBLE PRECISION XPQ(-7:7),PD(0:MAXPROC)
DOUBLE PRECISION DSIGUU,R,RCONF
INTEGER LUN,ICONF,IFACT,NFACT
DATA NFACT/1/
SAVE NFACT
C
C STUFF FOR DRESSED EE COLLISIONS
C
INCLUDE '../../Source/PDF/eepdf.inc'
DOUBLE PRECISION EE_COMP_PROD
INTEGER I_EE
C
C STUFF FOR UPC
C
DOUBLE PRECISION PHOTONPDFSQUARE
C
C EXTERNAL FUNCTIONS
C
LOGICAL PASSCUTS
DOUBLE PRECISION ALPHAS2,REWGT,PDG2PDF,CUSTOM_BIAS
INTEGER NEXTUNOPEN
C
C GLOBAL VARIABLES
C
INTEGER IPSEL
COMMON /SUBPROC/ IPSEL
C MINCFIG has this config number
INTEGER MINCFIG, MAXCFIG
COMMON/TO_CONFIGS/MINCFIG, MAXCFIG
INTEGER MAPCONFIG(0:LMAXCONFIGS), ICONFIG
COMMON/TO_MCONFIGS/MAPCONFIG, ICONFIG
C Keep track of whether cuts already calculated for this event
LOGICAL CUTSDONE,CUTSPASSED
COMMON/TO_CUTSDONE/CUTSDONE,CUTSPASSED
INTEGER SUBDIAG(MAXSPROC),IB(2)
COMMON/TO_SUB_DIAG/SUBDIAG,IB
INCLUDE '../../Source/vector.inc' ! defines VECSIZE_MEMMAX
INCLUDE 'run.inc'
INCLUDE '../../Source/PDF/pdf.inc'
C Common blocks
DOUBLE PRECISION RHEL, RCOL
INTEGER SELECTED_HEL(VECSIZE_MEMMAX)
INTEGER SELECTED_COL(VECSIZE_MEMMAX)
C
C local
C
DOUBLE PRECISION P1(0:3, NEXTERNAL)
INTEGER CHANNEL
C
C DATA
C
DATA G1/1*1D0/
DATA G2/1*1D0/
C ----------
C BEGIN CODE
C ----------
DSIG1=0D0
IF(IMODE.EQ.1)THEN
C Set up process information from file symfact
LUN=NEXTUNOPEN()
NFACT=1
OPEN(UNIT=LUN,FILE='../symfact.dat',STATUS='OLD',ERR=20)
DO WHILE(.TRUE.)
READ(LUN,*,ERR=10,END=10) RCONF, IFACT
ICONF=INT(RCONF)
IF(ICONF.EQ.MAPCONFIG(MINCFIG))THEN
NFACT=IFACT
ENDIF
ENDDO
DSIG1 = NFACT
10 CLOSE(LUN)
RETURN
20 WRITE(*,*)'Error opening symfact.dat. No symmetry factor used.'
RETURN
ENDIF
C Continue only if IMODE is 0, 4 or 5
IF(IMODE.NE.0.AND.IMODE.NE.4.AND.IMODE.NE.5) RETURN
IF (ABS(LPP(IB(1))).GE.1) THEN
!LP=SIGN(1,LPP(IB(1)))
IF (DSQRT(Q2FACT(IB(1))).EQ.0D0) THEN
QSCALE=0D0
DO I=3,NEXTERNAL
QSCALE=QSCALE+DSQRT(MAX(0D0,(PP(0,I)+PP(3,I))*(PP(0,I)
$ -PP(3,I))))
ENDDO
QSCALE=QSCALE/2D0
ELSE
QSCALE=DSQRT(Q2FACT(IB(1)))
ENDIF
G1=PDG2PDF(LPP(IB(1)),0, IB(1),XBK(IB(1)), QSCALE)
ENDIF
IF (ABS(LPP(IB(2))).GE.1) THEN
!LP=SIGN(1,LPP(IB(2)))
IF (DSQRT(Q2FACT(IB(2))).NE.0D0) THEN
QSCALE=DSQRT(Q2FACT(IB(2)))
ENDIF
G2=PDG2PDF(LPP(IB(2)),0, IB(2),XBK(IB(2)), QSCALE)
ENDIF
PD(0) = 0D0
IPROC = 0
IPROC=IPROC+1 ! g g > t t~
PD(IPROC)=G1*G2
PD(0)=PD(0)+DABS(PD(IPROC))
IF (IMODE.EQ.4)THEN
DSIG1 = PD(0)
RETURN
ENDIF
IF(FRAME_ID.NE.6)THEN
CALL BOOST_TO_FRAME(PP, FRAME_ID, P1)
ELSE
P1 = PP
ENDIF
CHANNEL = SUBDIAG(1)
CALL RANMAR(RHEL)
CALL RANMAR(RCOL)
CALL SMATRIX1(P1,RHEL, RCOL,CHANNEL,1, DSIGUU, SELECTED_HEL(1),
$ SELECTED_COL(1))
IF (IMODE.EQ.5) THEN
IF (DSIGUU.LT.1D199) THEN
DSIG1 = DSIGUU*CONV
ELSE
DSIG1 = 0.0D0
ENDIF
RETURN
ENDIF
C Select a flavor combination (need to do here for right sign)
CALL RANMAR(R)
IPSEL=0
DO WHILE (R.GE.0D0 .AND. IPSEL.LT.IPROC)
IPSEL=IPSEL+1
R=R-DABS(PD(IPSEL))/PD(0)
ENDDO
DSIGUU=DSIGUU*REWGT(PP,1)
C Apply the bias weight specified in the run card (default is 1.0)
DSIGUU=DSIGUU*CUSTOM_BIAS(PP,DSIGUU,1,1)
DSIGUU=DSIGUU*NFACT
IF (DSIGUU.LT.1D199) THEN
C Set sign of dsig based on sign of PDF and matrix element
DSIG1=DSIGN(CONV*PD(0)*DSIGUU,DSIGUU*PD(IPSEL))
ELSE
WRITE(*,*) 'Error in matrix element'
DSIGUU=0D0
DSIG1=0D0
ENDIF
C Generate events only if IMODE is 0.
IF(IMODE.EQ.0.AND.DABS(DSIG1).GT.0D0)THEN
C Call UNWGT to unweight and store events
CALL UNWGT(PP,DSIG1*WGT,1,SELECTED_HEL(1), SELECTED_COL(1), 1)
ENDIF
END
C
C Functionality to handling grid
C
DOUBLE PRECISION FUNCTION DSIG1_VEC(ALL_PP, ALL_XBK, ALL_Q2FACT,
$ ALL_CM_RAP, ALL_WGT, IMODE, ALL_OUT, VECSIZE_USED)
C ****************************************************
C
C Generated by MadGraph5_aMC@NLO v. 3.5.2_lo_vect, 2023-11-08
C By the MadGraph5_aMC@NLO Development Team
C Visit launchpad.net/madgraph5 and amcatnlo.web.cern.ch
C
C Process: g g > t t~ WEIGHTED<=2 @1
C
C RETURNS DIFFERENTIAL CROSS SECTION
C Input:
C pp 4 momentum of external particles
C wgt weight from Monte Carlo
C imode 0 run, 1 init, 2 reweight,
C 3 finalize, 4 only PDFs,
C 5 squared amplitude only (never
C generate events)
C Output:
C Amplitude squared and summed
C ****************************************************
IMPLICIT NONE
C
C CONSTANTS
C
INCLUDE '../../Source/vector.inc' ! defines VECSIZE_MEMMAX
INCLUDE 'genps.inc'
INCLUDE 'nexternal.inc'
INCLUDE 'maxconfigs.inc'
INCLUDE 'maxamps.inc'
DOUBLE PRECISION CONV
PARAMETER (CONV=389379.66*1000) !CONV TO PICOBARNS
REAL*8 PI
PARAMETER (PI=3.1415926D0)
C
C ARGUMENTS
C
DOUBLE PRECISION ALL_PP(0:3,NEXTERNAL,VECSIZE_MEMMAX)
DOUBLE PRECISION ALL_WGT(VECSIZE_MEMMAX)
DOUBLE PRECISION ALL_XBK(2,VECSIZE_MEMMAX)
DOUBLE PRECISION ALL_Q2FACT(2,VECSIZE_MEMMAX)
DOUBLE PRECISION ALL_CM_RAP(VECSIZE_MEMMAX)
INTEGER IMODE
DOUBLE PRECISION ALL_OUT(VECSIZE_MEMMAX)
INTEGER VECSIZE_USED
C ----------
C BEGIN CODE
C ----------
C
C LOCAL VARIABLES
C
DOUBLE PRECISION QSCALE
INTEGER I,ITYPE,LP,IPROC
DOUBLE PRECISION G1(VECSIZE_MEMMAX)
DOUBLE PRECISION G2(VECSIZE_MEMMAX)
DOUBLE PRECISION XPQ(-7:7),PD(0:MAXPROC)
DOUBLE PRECISION ALL_PD(0:MAXPROC, VECSIZE_MEMMAX)
DOUBLE PRECISION DSIGUU,R,RCONF
INTEGER LUN,ICONF,IFACT,NFACT
DATA NFACT/1/
SAVE NFACT
DOUBLE PRECISION RHEL ! random number
INTEGER CHANNEL
C
C STUFF FOR DRESSED EE COLLISIONS --even if not supported for now--
C
INCLUDE '../../Source/PDF/eepdf.inc'
DOUBLE PRECISION EE_COMP_PROD
INTEGER I_EE
C
C EXTERNAL FUNCTIONS
C
LOGICAL PASSCUTS
DOUBLE PRECISION ALPHAS2,REWGT,PDG2PDF,CUSTOM_BIAS
INTEGER NEXTUNOPEN
DOUBLE PRECISION DSIG1
C
C GLOBAL VARIABLES
C
INTEGER IPSEL
COMMON /SUBPROC/ IPSEL
C MINCFIG has this config number
INTEGER MINCFIG, MAXCFIG
COMMON/TO_CONFIGS/MINCFIG, MAXCFIG
INTEGER MAPCONFIG(0:LMAXCONFIGS), ICONFIG
COMMON/TO_MCONFIGS/MAPCONFIG, ICONFIG
C Keep track of whether cuts already calculated for this event
LOGICAL CUTSDONE,CUTSPASSED
COMMON/TO_CUTSDONE/CUTSDONE,CUTSPASSED
INTEGER SUBDIAG(MAXSPROC),IB(2)
COMMON/TO_SUB_DIAG/SUBDIAG,IB
INCLUDE 'run.inc'
DOUBLE PRECISION P_MULTI(0:3, NEXTERNAL, VECSIZE_MEMMAX)
DOUBLE PRECISION HEL_RAND(VECSIZE_MEMMAX)
DOUBLE PRECISION COL_RAND(VECSIZE_MEMMAX)
INTEGER SELECTED_HEL(VECSIZE_MEMMAX)
INTEGER SELECTED_COL(VECSIZE_MEMMAX)
DOUBLE PRECISION ALL_RWGT(VECSIZE_MEMMAX)
C Common blocks
CHARACTER*7 PDLABEL,EPA_LABEL
INTEGER LHAID
COMMON/TO_PDF/LHAID,PDLABEL,EPA_LABEL
C
C local
C
DOUBLE PRECISION P1(0:3, NEXTERNAL)
INTEGER IVEC
C
C DATA
C
DATA G1/VECSIZE_MEMMAX*1D0/
DATA G2/VECSIZE_MEMMAX*1D0/
C ----------
C BEGIN CODE
C ----------
IF(IMODE.EQ.1)THEN
NFACT = DSIG1(ALL_PP(0,1,1), ALL_WGT(1), IMODE)
RETURN
ENDIF
C Continue only if IMODE is 0, 4 or 5
IF(IMODE.NE.0.AND.IMODE.NE.4.AND.IMODE.NE.5) RETURN
DO IVEC=1,VECSIZE_USED
IF (ABS(LPP(IB(1))).GE.1) THEN
!LP=SIGN(1,LPP(IB(1)))
G1(IVEC)=PDG2PDF(LPP(IB(1)),0, IB(1),ALL_XBK(IB(1),IVEC)
$ ,DSQRT(ALL_Q2FACT(IB(1), IVEC)))
ENDIF
IF (ABS(LPP(IB(2))).GE.1) THEN
!LP=SIGN(1,LPP(IB(2)))
G2(IVEC)=PDG2PDF(LPP(IB(2)),0, IB(2),ALL_XBK(IB(2),IVEC)
$ ,DSQRT(ALL_Q2FACT(IB(2), IVEC)))
ENDIF
ENDDO
ALL_PD(0,:) = 0D0
IPROC = 0
IPROC=IPROC+1 ! g g > t t~
DO IVEC=1, VECSIZE_USED
ALL_PD(IPROC,IVEC)=G1(IVEC)*G2(IVEC)
ALL_PD(0,IVEC)=ALL_PD(0,IVEC)+DABS(ALL_PD(IPROC,IVEC))
ENDDO
IF (IMODE.EQ.4)THEN
ALL_OUT(:) = ALL_PD(0,:)
RETURN
ENDIF
DO IVEC=1,VECSIZE_USED
C Do not need those three here do I?
XBK(:) = ALL_XBK(:,IVEC)
C CM_RAP = ALL_CM_RAP(IVEC)
Q2FACT(:) = ALL_Q2FACT(:, IVEC)
C Select a flavor combination (need to do here for right sign)
CALL RANMAR(R)
IPSEL=0
DO WHILE (R.GE.0D0 .AND. IPSEL.LT.IPROC)
IPSEL=IPSEL+1
R=R-DABS(ALL_PD(IPSEL,IVEC))/ALL_PD(0,IVEC)
ENDDO
CHANNEL = SUBDIAG(1)
ALL_RWGT(IVEC) = REWGT(ALL_PP(0,1,IVEC), IVEC)
IF(FRAME_ID.NE.6)THEN
CALL BOOST_TO_FRAME(ALL_PP(0,1,IVEC), FRAME_ID, P_MULTI(0,1
$ ,IVEC))
ELSE
P_MULTI(:,:,IVEC) = ALL_PP(:,:,IVEC)
ENDIF
CALL RANMAR(HEL_RAND(IVEC))
CALL RANMAR(COL_RAND(IVEC))
ENDDO
CALL SMATRIX1_MULTI(P_MULTI, HEL_RAND, COL_RAND, CHANNEL,
$ ALL_OUT , SELECTED_HEL, SELECTED_COL, VECSIZE_USED)
DO IVEC=1,VECSIZE_USED
DSIGUU = ALL_OUT(IVEC)
IF (IMODE.EQ.5) THEN
IF (DSIGUU.LT.1D199) THEN
ALL_OUT(IVEC) = DSIGUU*CONV
ELSE
ALL_OUT(IVEC) = 0.0D0
ENDIF
RETURN
ENDIF
XBK(:) = ALL_XBK(:,IVEC)
C CM_RAP = ALL_CM_RAP(IVEC)
Q2FACT(:) = ALL_Q2FACT(:, IVEC)
IF(FRAME_ID.NE.6)THEN
CALL BOOST_TO_FRAME(ALL_PP(0,1,IVEC), FRAME_ID, P1)
ELSE
P1 = ALL_PP(:,:,IVEC)
ENDIF
C call restore_cl_val_to(ivec)
C DSIGUU=DSIGUU*REWGT(P1,ivec)
DSIGUU=DSIGUU*ALL_RWGT(IVEC)
C Apply the bias weight specified in the run card (default is
C 1.0)
DSIGUU=DSIGUU*CUSTOM_BIAS(P1,DSIGUU,1, IVEC)
DSIGUU=DSIGUU*NFACT
IF (DSIGUU.LT.1D199) THEN
C Set sign of dsig based on sign of PDF and matrix element
ALL_OUT(IVEC)=DSIGN(CONV*ALL_PD(0,IVEC)*DSIGUU,DSIGUU
$ *ALL_PD(IPSEL,IVEC))
ELSE
WRITE(*,*) 'Error in matrix element'
DSIGUU=0D0
ALL_OUT(IVEC)=0D0
ENDIF
C Generate events only if IMODE is 0.
IF(IMODE.EQ.0.AND.DABS(ALL_OUT(IVEC)).GT.0D0)THEN
C Call UNWGT to unweight and store events
CALL UNWGT(ALL_PP(0,1,IVEC), ALL_OUT(IVEC)*ALL_WGT(IVEC),1,
$ SELECTED_HEL(IVEC), SELECTED_COL(IVEC), IVEC)
ENDIF
ENDDO
END
C
C Functionality to handling grid
C
SUBROUTINE PRINT_ZERO_AMP1()
RETURN
END
SUBROUTINE SMATRIX1_MULTI(P_MULTI, HEL_RAND, COL_RAND, CHANNEL,
$ OUT, SELECTED_HEL, SELECTED_COL, VECSIZE_USED)
USE OMP_LIB
IMPLICIT NONE
INCLUDE 'nexternal.inc'
INCLUDE '../../Source/vector.inc' ! defines VECSIZE_MEMMAX
INCLUDE 'maxamps.inc'
INTEGER NCOMB
PARAMETER ( NCOMB=16)
DOUBLE PRECISION P_MULTI(0:3, NEXTERNAL, VECSIZE_MEMMAX)
DOUBLE PRECISION HEL_RAND(VECSIZE_MEMMAX)
DOUBLE PRECISION COL_RAND(VECSIZE_MEMMAX)
INTEGER CHANNEL
DOUBLE PRECISION OUT(VECSIZE_MEMMAX)
INTEGER SELECTED_HEL(VECSIZE_MEMMAX)
INTEGER SELECTED_COL(VECSIZE_MEMMAX)
INTEGER VECSIZE_USED
INTEGER IVEC
INTEGER IEXT
INTEGER ISUM_HEL
LOGICAL MULTI_CHANNEL
COMMON/TO_MATRIX/ISUM_HEL, MULTI_CHANNEL
LOGICAL FIRST_CHID
SAVE FIRST_CHID
DATA FIRST_CHID/.TRUE./
#ifdef MG5AMC_MEEXPORTER_CUDACPP
INCLUDE 'coupl.inc' ! for ALL_G
INCLUDE 'fbridge.inc'
INCLUDE 'fbridge_common.inc'
INCLUDE 'genps.inc'
INCLUDE 'run.inc'
DOUBLE PRECISION OUT2(VECSIZE_MEMMAX)
INTEGER SELECTED_HEL2(VECSIZE_MEMMAX)
INTEGER SELECTED_COL2(VECSIZE_MEMMAX)
DOUBLE PRECISION CBYF1
INTEGER*4 NGOODHEL, NTOTHEL
INTEGER*4 NWARNINGS
SAVE NWARNINGS
DATA NWARNINGS/0/
LOGICAL FIRST
SAVE FIRST
DATA FIRST/.TRUE./
IF( FBRIDGE_MODE .LE. 0 ) THEN ! (FortranOnly=0 or BothQuiet=-1 or BothDebug=-2)
#endif
call counters_smatrix1multi_start( -1, VECSIZE_USED ) ! fortran=-1
!$OMP PARALLEL
!$OMP DO
DO IVEC=1, VECSIZE_USED
CALL SMATRIX1(P_MULTI(0,1,IVEC),
& hel_rand(IVEC),
& col_rand(IVEC),
& channel,
& IVEC,
& out(IVEC),
& selected_hel(IVEC),
& selected_col(IVEC)
& )
ENDDO
!$OMP END DO
!$OMP END PARALLEL
call counters_smatrix1multi_stop( -1 ) ! fortran=-1
#ifdef MG5AMC_MEEXPORTER_CUDACPP
ENDIF
IF( FBRIDGE_MODE .EQ. 1 .OR. FBRIDGE_MODE .LT. 0 ) THEN ! (CppOnly=1 or BothQuiet=-1 or BothDebug=-2)
IF( LIMHEL.NE.0 ) THEN
WRITE(6,*) 'ERROR! The cudacpp bridge only supports LIMHEL=0'
STOP
ENDIF
IF ( FIRST ) THEN ! exclude first pass (helicity filtering) from timers (#461)
CALL FBRIDGESEQUENCE(FBRIDGE_PBRIDGE, P_MULTI, ALL_G,
& HEL_RAND, COL_RAND, 0, OUT2,
& SELECTED_HEL2, SELECTED_COL2 ) ! 0: multi channel disabled for helicity filtering
FIRST = .FALSE.
c ! This is a workaround for https://github.com/oliviermattelaer/mg5amc_test/issues/22 (see PR #486)
IF( FBRIDGE_MODE .EQ. 1 ) THEN ! (CppOnly=1 : SMATRIX1 is not called at all)
CALL RESET_CUMULATIVE_VARIABLE() ! mimic 'avoid bias of the initialization' within SMATRIX1
ENDIF
CALL FBRIDGEGETNGOODHEL(FBRIDGE_PBRIDGE,NGOODHEL,NTOTHEL)
IF( NTOTHEL .NE. NCOMB ) THEN
WRITE(6,*) 'ERROR! Cudacpp/Fortran mismatch',
& ' in total number of helicities', NTOTHEL, NCOMB
STOP
ENDIF
WRITE (6,*) 'NGOODHEL =', NGOODHEL
WRITE (6,*) 'NCOMB =', NCOMB
ENDIF
call counters_smatrix1multi_start( 0, VECSIZE_USED ) ! cudacpp=0
IF ( .NOT. MULTI_CHANNEL ) THEN
CALL FBRIDGESEQUENCE(FBRIDGE_PBRIDGE, P_MULTI, ALL_G,
& HEL_RAND, COL_RAND, 0, OUT2,
& SELECTED_HEL2, SELECTED_COL2 ) ! 0: multi channel disabled
ELSE
IF( SDE_STRAT.NE.1 ) THEN
WRITE(6,*) 'ERROR! The cudacpp bridge requires SDE=1' ! multi channel single-diagram enhancement strategy
STOP
ENDIF
CALL FBRIDGESEQUENCE(FBRIDGE_PBRIDGE, P_MULTI, ALL_G,
& HEL_RAND, COL_RAND, CHANNEL, OUT2,
& SELECTED_HEL2, SELECTED_COL2 ) ! 1-N: multi channel enabled
ENDIF
call counters_smatrix1multi_stop( 0 ) ! cudacpp=0
ENDIF
IF( FBRIDGE_MODE .LT. 0 ) THEN ! (BothQuiet=-1 or BothDebug=-2)
DO IVEC=1, VECSIZE_USED
CBYF1 = OUT2(IVEC)/OUT(IVEC) - 1
FBRIDGE_NCBYF1 = FBRIDGE_NCBYF1 + 1
FBRIDGE_CBYF1SUM = FBRIDGE_CBYF1SUM + CBYF1
FBRIDGE_CBYF1SUM2 = FBRIDGE_CBYF1SUM2 + CBYF1 * CBYF1
IF( CBYF1 .GT. FBRIDGE_CBYF1MAX ) FBRIDGE_CBYF1MAX = CBYF1
IF( CBYF1 .LT. FBRIDGE_CBYF1MIN ) FBRIDGE_CBYF1MIN = CBYF1
IF( FBRIDGE_MODE .EQ. -2 ) THEN ! (BothDebug=-2)
WRITE (*,'(I4,2E16.8,F23.11,I3,I3,I4,I4)')
& IVEC, OUT(IVEC), OUT2(IVEC), 1+CBYF1,
& SELECTED_HEL(IVEC), SELECTED_HEL2(IVEC),
& SELECTED_COL(IVEC), SELECTED_COL2(IVEC)
ENDIF
IF( ABS(CBYF1).GT.5E-5 .AND. NWARNINGS.LT.20 ) THEN
NWARNINGS = NWARNINGS + 1
WRITE (*,'(A,I4,A,I4,2E16.8,F23.11)')
& 'WARNING! (', NWARNINGS, '/20) Deviation more than 5E-5',
& IVEC, OUT(IVEC), OUT2(IVEC), 1+CBYF1
ENDIF
END DO
ENDIF
IF( FBRIDGE_MODE .EQ. 1 .OR. FBRIDGE_MODE .LT. 0 ) THEN ! (CppOnly=1 or BothQuiet=-1 or BothDebug=-2)
DO IVEC=1, VECSIZE_USED
OUT(IVEC) = OUT2(IVEC) ! use the cudacpp ME instead of the fortran ME!
SELECTED_HEL(IVEC) = SELECTED_HEL2(IVEC) ! use the cudacpp helicity instead of the fortran helicity!
SELECTED_COL(IVEC) = SELECTED_COL2(IVEC) ! use the cudacpp color instead of the fortran color!
END DO
ENDIF
#endif
IF ( FIRST_CHID ) THEN
IF ( MULTI_CHANNEL ) THEN
WRITE (*,*) 'MULTI_CHANNEL = TRUE'
ELSE
WRITE (*,*) 'MULTI_CHANNEL = FALSE'
ENDIF
WRITE (*,*) 'CHANNEL_ID =', CHANNEL
FIRST_CHID = .FALSE.
ENDIF
RETURN
END
INTEGER FUNCTION GET_NHEL1(HEL, IPART)
C if hel>0 return the helicity of particule ipart for the selected
C helicity configuration
C if hel=0 return the number of helicity state possible for that
C particle
IMPLICIT NONE
INTEGER HEL,I, IPART
INCLUDE 'nexternal.inc'
INTEGER ONE_NHEL(NEXTERNAL)
INTEGER NCOMB
PARAMETER ( NCOMB=16)
INTEGER NHEL(NEXTERNAL,0:NCOMB)
DATA (NHEL(I,0),I=1,4) / 2, 2, 2, 2/
DATA (NHEL(I, 1),I=1,4) /-1,-1,-1, 1/
DATA (NHEL(I, 2),I=1,4) /-1,-1,-1,-1/
DATA (NHEL(I, 3),I=1,4) /-1,-1, 1, 1/
DATA (NHEL(I, 4),I=1,4) /-1,-1, 1,-1/
DATA (NHEL(I, 5),I=1,4) /-1, 1,-1, 1/
DATA (NHEL(I, 6),I=1,4) /-1, 1,-1,-1/
DATA (NHEL(I, 7),I=1,4) /-1, 1, 1, 1/
DATA (NHEL(I, 8),I=1,4) /-1, 1, 1,-1/
DATA (NHEL(I, 9),I=1,4) / 1,-1,-1, 1/
DATA (NHEL(I, 10),I=1,4) / 1,-1,-1,-1/
DATA (NHEL(I, 11),I=1,4) / 1,-1, 1, 1/
DATA (NHEL(I, 12),I=1,4) / 1,-1, 1,-1/
DATA (NHEL(I, 13),I=1,4) / 1, 1,-1, 1/
DATA (NHEL(I, 14),I=1,4) / 1, 1,-1,-1/
DATA (NHEL(I, 15),I=1,4) / 1, 1, 1, 1/
DATA (NHEL(I, 16),I=1,4) / 1, 1, 1,-1/
GET_NHEL1 = NHEL(IPART, IABS(HEL))
RETURN
END