subroutine H1evolve(xin,qin,pdf)
      implicit real*8 (a-h,o-z)
*******************************************************
c  done on  13/07/04 at  10.04.39
c evolution has been made starting at q2_input =      4.000
c  available for :       1.500 <= q2 <= 1000000.000
c            and :  0.000057 <= x <=  0.906052
c*                                                 
c   for x outside limits, the closest limit        
c        is assumed : f2(x>xmax,q2)=f2(xmax,q2)    
c                     f2(x<xmin,q2)=f2(xmin,q2)    
c  for q2 outside limits, the closest limit        
c        is assumed : f2(x,q2>q2max)=f2(x,q2max)   
c                     f2(x,q2<q2min)=f2(x,q2min)   
c*                                                 
c  comments, etc... to C. Pascaud or F. Zomer      
********************************************************
      include 'parmsetup.inc'
      PARAMETER(n_bin_q2=86)
      PARAMETER(n_bin_x=100)
      REAL*4 xl_bin(n_bin_x),q2l_bin(n_bin_q2) 
      PARAMETER(ngrid=20)
      REAL*4 f(0:ngrid,8,n_bin_x,n_bin_q2),val(8) 
      real*8 pdf(-6:6)
      real*4 q2in,x,y 
      character*16 name(nmxset)
      integer nmem(nmxset),ndef(nmxset),mmem
      common/NAME/name,nmem,ndef,mmem
      integer nset,iset
      save
c
c      enddo
      call getnset(iset)
      call getnmem(iset,imem)
c
      q2in = qin*qin
      x=log(xin)                                   
      y=log(q2in)                                  
      DO i=2,n_bin_x                               
        IF(x.LT.xl_bin(i))  goto 1                 
        IF(xl_bin(i).ge.0.)  goto 1                
      ENDDO                                        
      i=n_bin_x                                    
    1 i=i-1                                        
      DO j=2,n_bin_q2                              
        IF(y.LT.q2l_bin(j))  GOTO 2                
      ENDDO                                        
      j=n_bin_q2                                   
    2 j=j-1                                        
      dx=xl_bin(i+1)-xl_bin(i)                     
      xd=(x-xl_bin(i))/dx                          
      dy=q2l_bin(j+1)-q2l_bin(j)                   
      yd=(y-q2l_bin(j))/dy                         
c                                                  
      do k=1,8                                     
      val(k)=f(imem,k,i,j)+xd*(f(imem,k,i+1,j)-f(imem,k,i,j))
     &+yd*(f(imem,k,i,j+1)-f(imem,k,i,j))          
     &+xd*yd*(f(imem,k,i+1,j+1)+f(imem,k,i,j)      
     &-f(imem,k,i+1,j)-f(imem,k,i,j+1))            
      enddo                                        
      pdf(-6) = 0.0d0                              
       pdf(6) = 0.0d0                              
      pdf(-5) = val(7)                             
       pdf(5) = val(7)                             
      pdf(-4) = val(6)                             
       pdf(4) = val(6)                             
      pdf(-3) = val(5)                             
       pdf(3) = val(5)                             
      pdf(-2) = val(4)                             
       pdf(2) = val(3)+val(4)                      
      pdf(-1) = val(2)                             
       pdf(1) = val(1)+val(2)                      
       pdf(0) = val(8)                             
      return                                       
c                                                  
      entry H1read(nset)                                 
c                                                  
      read(1,*)nmem(nset),ndef(nset)                           
      read(1,1000)xl_bin                           
      read(1,1000)q2l_bin                          
        do i=1,n_bin_q2                            
          q2l_bin(i)=log(q2l_bin(i))               
        enddo                                      
      do nm = 0,nmem(nset)                               
        do jval = 1,8                              
      read(1,1000)((f(nm,jval,nx,nq2),nx=1,n_bin_x),nq2=1,n_bin_q2)
        enddo                                      
      enddo                                        
      return                                       
c                                                  
      entry H1alfa(alfas,qalfa)                    
      call alphah1(alfas,Qalfa)                    
      return                                       
c                                                  
      entry H1init(Eorder,Q2fit)                   
      return                                       
c                                                  
      entry H1pdf(mem) 
      call getnset(iset)
      call setnmem(iset,mem)
c      imem = mem                                   
      return                                       
c                                                  
 1000 format(5e13.5)                               
      END                                          
*
      subroutine alphah1(alpha,Qin)                
      implicit real*8 (a-h,o-z)
        call getnset(nset)
        call GetOrderAsM(nset,iord)
        if(iord.eq.1) then 
	  call alphah1nlo(alpha,Qin)
        elseif(iord.eq.0) then 
	  call alphah1lo(alpha,Qin)
	else
	  print *,'iord = ',iord
	  stop
	endif
      return
      end
*
      subroutine alphah1nlo(alpha,Qin)                
      implicit real*8 (a-h,o-z)
****************************************************
c  done on  13/07/04 at  09.10.39
c evolution has been made starting at q2_input =      4.000
c  available for :       1.500 <= q2 <= 1000000.000
c  for q2 outside limits, the closest limit        
c        is assumed : f2(x,q2>q2max)=f2(x,q2max)   
c                     f2(x,q2<q2min)=f2(x,q2min)   
c*                                                 
c  comments, etc... to C. Pascaud or F. Zomer      
***************************************************
      PARAMETER(n_bin_q2=102)
      dimension q2l_bin(n_bin_q2)
      dimension f(n_bin_q2)                        
      data q2l_bin/                                
     +1.500000E+00,1.600000E+00,1.700000E+00,1.800000E+00,1.900000E+00,         
     +1.959902E+00,1.960000E+00,1.960098E+00,2.000000E+00,2.100000E+00,         
     +2.200000E+00,2.300000E+00,2.400000E+00,2.500000E+00,3.000000E+00,         
     +3.500000E+00,4.000000E+00,4.500000E+00,5.000000E+00,6.000000E+00,         
     +7.000000E+00,8.000000E+00,9.000000E+00,1.000000E+01,1.500000E+01,         
     +2.000000E+01,2.024899E+01,2.025000E+01,2.025101E+01,2.500000E+01,         
     +3.000000E+01,3.500000E+01,4.000000E+01,4.500000E+01,5.000000E+01,         
     +5.500000E+01,6.000000E+01,6.500000E+01,7.000000E+01,7.500000E+01,         
     +8.000000E+01,8.500000E+01,9.000000E+01,9.500000E+01,1.000000E+02,         
     +1.500000E+02,2.000000E+02,2.500000E+02,3.000000E+02,3.500000E+02,         
     +4.000000E+02,4.500000E+02,5.000000E+02,5.500000E+02,6.000000E+02,         
     +6.500000E+02,7.000000E+02,7.500000E+02,8.000000E+02,8.500000E+02,         
     +9.000000E+02,9.500000E+02,1.000000E+03,1.500000E+03,2.000000E+03,         
     +2.500000E+03,3.000000E+03,3.500000E+03,4.000000E+03,4.500000E+03,         
     +5.000000E+03,5.500000E+03,6.000000E+03,6.500000E+03,7.000000E+03,         
     +7.500000E+03,8.000000E+03,8.500000E+03,9.000000E+03,9.500000E+03,         
     +1.000000E+04,1.500000E+04,2.000000E+04,2.500000E+04,3.000000E+04,         
     +3.500000E+04,4.000000E+04,4.500000E+04,5.000000E+04,5.500000E+04,         
     +6.000000E+04,6.500000E+04,7.000000E+04,7.500000E+04,8.000000E+04,         
     +8.500000E+04,9.000000E+04,9.500000E+04,1.000000E+05,1.500000E+05,         
     +2.000000E+05,1.000000E+06/                                                
      data f/                                      
     +3.935326E-01,3.849873E-01,3.773198E-01,3.703884E-01,3.640814E-01,         
     +3.605647E-01,3.605591E-01,3.605540E-01,3.585220E-01,3.537029E-01,         
     +3.492356E-01,3.450786E-01,3.411967E-01,3.375601E-01,3.222805E-01,         
     +3.104663E-01,3.009529E-01,2.930611E-01,2.863649E-01,2.755124E-01,         
     +2.669931E-01,2.600508E-01,2.542359E-01,2.492618E-01,2.318890E-01,         
     +2.210261E-01,2.205828E-01,2.205810E-01,2.205794E-01,2.139838E-01,         
     +2.085977E-01,2.042587E-01,2.006485E-01,1.975722E-01,1.949020E-01,         
     +1.925502E-01,1.904538E-01,1.885667E-01,1.868536E-01,1.852875E-01,         
     +1.838468E-01,1.825145E-01,1.812765E-01,1.801214E-01,1.790394E-01,         
     +1.709373E-01,1.656324E-01,1.617456E-01,1.587067E-01,1.562275E-01,         
     +1.541435E-01,1.523521E-01,1.507856E-01,1.493968E-01,1.481517E-01,         
     +1.470250E-01,1.459974E-01,1.450540E-01,1.441827E-01,1.433740E-01,         
     +1.426200E-01,1.419142E-01,1.412513E-01,1.362263E-01,1.328778E-01,         
     +1.303943E-01,1.284347E-01,1.268244E-01,1.254625E-01,1.242858E-01,         
     +1.232522E-01,1.223323E-01,1.215046E-01,1.207533E-01,1.200661E-01,         
     +1.194337E-01,1.188480E-01,1.183032E-01,1.177942E-01,1.173169E-01,         
     +1.168677E-01,1.134367E-01,1.111245E-01,1.093963E-01,1.080244E-01,         
     +1.068916E-01,1.059298E-01,1.050959E-01,1.043613E-01,1.037057E-01,         
     +1.031144E-01,1.025766E-01,1.020837E-01,1.016292E-01,1.012077E-01,         
     +1.008150E-01,1.004476E-01,1.001026E-01,9.977747E-02,9.728142E-02,         
     +9.558620E-02,8.711093E-02/                                                
      data init/0/                                 
      if(init.eq.0) then                           
        do i=1,n_bin_q2                            
         q2l_bin(i) = log(q2l_bin(i))              
        enddo                                      
        init=1                                     
      endif                                        
*                                                  
      q2in = qin*qin                               
*                                                  
      y = log(q2in)                                
      do j = 2, n_bin_q2                           
        if (y.lt.q2l_bin(j))  goto 2               
      enddo                                        
      j=n_bin_q2                                   
 2    j=j-1                                        
*                                                  
      dy = q2l_bin(j+1) - q2l_bin(j)               
      yd = (y - q2l_bin(j)) / dy                   
      alpha = f(j) + yd*(f(j+1)-f(j))              
*                                                  
      return
      END                                          
                                                   
*                                                  
      subroutine alphah1lo(alpha,Qin)                
      implicit real*8 (a-h,o-z)
c  done on  13/07/04 at  11.32.26
c evolution has been made starting at q2_input =      4.000
c  available for :       1.500 <= q2 <= 1000000.000
c  for q2 outside limits, the closest limit        
c        is assumed : f2(x,q2>q2max)=f2(x,q2max)   
c                     f2(x,q2<q2min)=f2(x,q2min)   
c*                                                 
c  comments, etc... to C. Pascaud or F. Zomer      
***************************************************
      PARAMETER(n_bin_q2=102)
      dimension q2l_bin(n_bin_q2)
      dimension f(n_bin_q2)                        
      data q2l_bin/                                
     +1.500000E+00,1.600000E+00,1.700000E+00,1.800000E+00,1.900000E+00,         
     +1.959902E+00,1.960000E+00,1.960098E+00,2.000000E+00,2.100000E+00,         
     +2.200000E+00,2.300000E+00,2.400000E+00,2.500000E+00,3.000000E+00,         
     +3.500000E+00,4.000000E+00,4.500000E+00,5.000000E+00,6.000000E+00,         
     +7.000000E+00,8.000000E+00,9.000000E+00,1.000000E+01,1.500000E+01,         
     +2.000000E+01,2.024899E+01,2.025000E+01,2.025101E+01,2.500000E+01,         
     +3.000000E+01,3.500000E+01,4.000000E+01,4.500000E+01,5.000000E+01,         
     +5.500000E+01,6.000000E+01,6.500000E+01,7.000000E+01,7.500000E+01,         
     +8.000000E+01,8.500000E+01,9.000000E+01,9.500000E+01,1.000000E+02,         
     +1.500000E+02,2.000000E+02,2.500000E+02,3.000000E+02,3.500000E+02,         
     +4.000000E+02,4.500000E+02,5.000000E+02,5.500000E+02,6.000000E+02,         
     +6.500000E+02,7.000000E+02,7.500000E+02,8.000000E+02,8.500000E+02,         
     +9.000000E+02,9.500000E+02,1.000000E+03,1.500000E+03,2.000000E+03,         
     +2.500000E+03,3.000000E+03,3.500000E+03,4.000000E+03,4.500000E+03,         
     +5.000000E+03,5.500000E+03,6.000000E+03,6.500000E+03,7.000000E+03,         
     +7.500000E+03,8.000000E+03,8.500000E+03,9.000000E+03,9.500000E+03,         
     +1.000000E+04,1.500000E+04,2.000000E+04,2.500000E+04,3.000000E+04,         
     +3.500000E+04,4.000000E+04,4.500000E+04,5.000000E+04,5.500000E+04,         
     +6.000000E+04,6.500000E+04,7.000000E+04,7.500000E+04,8.000000E+04,         
     +8.500000E+04,9.000000E+04,9.500000E+04,1.000000E+05,1.500000E+05,         
     +2.000000E+05,1.000000E+06/                                                
      data f/                                      
     +4.395646E-01,4.308115E-01,4.229009E-01,4.157042E-01,4.091185E-01,         
     +4.054310E-01,4.054251E-01,4.054197E-01,4.032349E-01,3.980418E-01,         
     +3.932134E-01,3.887078E-01,3.844897E-01,3.805290E-01,3.637916E-01,         
     +3.507479E-01,3.401822E-01,3.313772E-01,3.238784E-01,3.116737E-01,         
     +3.020502E-01,2.941818E-01,2.875740E-01,2.819097E-01,2.620464E-01,         
     +2.495700E-01,2.490599E-01,2.490579E-01,2.490560E-01,2.413308E-01,         
     +2.350218E-01,2.299395E-01,2.257114E-01,2.221089E-01,2.189825E-01,         
     +2.162291E-01,2.137753E-01,2.115667E-01,2.095621E-01,2.077297E-01,         
     +2.060444E-01,2.044861E-01,2.030382E-01,2.016875E-01,2.004225E-01,         
     +1.909551E-01,1.847628E-01,1.802294E-01,1.766873E-01,1.737993E-01,         
     +1.713728E-01,1.692881E-01,1.674658E-01,1.658508E-01,1.644033E-01,         
     +1.630939E-01,1.619001E-01,1.608043E-01,1.597925E-01,1.588537E-01,         
     +1.579785E-01,1.571596E-01,1.563904E-01,1.505657E-01,1.466892E-01,         
     +1.438172E-01,1.415527E-01,1.396930E-01,1.381211E-01,1.367637E-01,         
     +1.355719E-01,1.345115E-01,1.335578E-01,1.326924E-01,1.319011E-01,         
     +1.311728E-01,1.304988E-01,1.298719E-01,1.292864E-01,1.287374E-01,         
     +1.282208E-01,1.242789E-01,1.216259E-01,1.196449E-01,1.180735E-01,         
     +1.167767E-01,1.156763E-01,1.147226E-01,1.138828E-01,1.131336E-01,         
     +1.124583E-01,1.118440E-01,1.112813E-01,1.107625E-01,1.102815E-01,         
     +1.098335E-01,1.094145E-01,1.090210E-01,1.086503E-01,1.058065E-01,         
     +1.038775E-01,9.426288E-02/                                                
      data init/0/                                 
      if(init.eq.0) then                           
        do i=1,n_bin_q2                            
         q2l_bin(i) = log(q2l_bin(i))              
        enddo                                      
        init=1                                     
      endif                                        
                                                   
      q2in = qin*qin                               
*                                                  
      y = log(q2in)                                
      do j = 2, n_bin_q2                           
        if (y.lt.q2l_bin(j))  goto 2               
      enddo                                        
      j=n_bin_q2                                   
 2    j=j-1                                        
*                                                  
      dy = q2l_bin(j+1) - q2l_bin(j)               
      yd = (y - q2l_bin(j)) / dy                   
      alpha = f(j) + yd*(f(j+1)-f(j))              
*                                                  
      return
      END                                          
*