mrs998.F

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      subroutine mrs998(x,qsq,upv,dnv,usea,dsea,str,chm,bot,glu)
      implicit real*8(a-h,o-z)
      include "pepadm.inc"
      parameter(nx=49,nq=37,ntenth=23,np=8)
      real*8 f(np,nx,nq+1),qq(nq),xx(nx),g(np),n0(np)
      data xx/1d-5,2d-5,4d-5,6d-5,8d-5,
     &        1d-4,2d-4,4d-4,6d-4,8d-4,
     &        1d-3,2d-3,4d-3,6d-3,8d-3,
     &        1d-2,1.4d-2,2d-2,3d-2,4d-2,6d-2,8d-2,
     &     .1d0,.125d0,.15d0,.175d0,.2d0,.225d0,.25d0,.275d0,
     &     .3d0,.325d0,.35d0,.375d0,.4d0,.425d0,.45d0,.475d0,
     &     .5d0,.525d0,.55d0,.575d0,.6d0,.65d0,.7d0,.75d0,
     &     .8d0,.9d0,1d0/
      data qq/1.25d0,1.5d0,2d0,2.5d0,3.2d0,4d0,5d0,6.4d0,8d0,1d1,
     &        1.2d1,1.8d1,2.6d1,4d1,6.4d1,1d2,
     &        1.6d2,2.4d2,4d2,6.4d2,1d3,1.8d3,3.2d3,5.6d3,1d4,
     &        1.8d4,3.2d4,5.6d4,1d5,1.8d5,3.2d5,5.6d5,1d6,
     &        1.8d6,3.2d6,5.6d6,1d7/
      data xmin,xmax,qsqmin,qsqmax/1d-5,1d0,1.25d0,1d7/
      data n0/3,4,5,9,9,9,9,9/
      data init/0/

      xsave=x
      q2save=qsq
      if(init.ne.0) goto 10
        open(unit=iplst(2),file=cunpol,status='old')
        do 20 n=1,nx-1
        do 20 m=1,nq
        read(iplst(2),50)f(1,n,m),f(2,n,m),f(3,n,m),f(4,n,m),
     &      f(5,n,m),f(7,n,m),f(6,n,m),f(8,n,m)
c notation: 1=uval 2=val 3=glue 4=usea 5=chm 6=str 7=btm 8=dsea
       do 25 i=1,np
  25   f(i,n,m)=f(i,n,m)/(1d0-xx(n))**n0(i)
  20  continue
      do 31 j=1,ntenth-1
      xx(j)=dlog10(xx(j)/xx(ntenth))+xx(ntenth)
      do 31 i=1,8
      if(i.eq.5.or.i.eq.7) goto 31
      do 30 k=1,nq
  30  f(i,j,k)=dlog10(f(i,j,k)/f(i,ntenth,k))+f(i,ntenth,k)
  31  continue
  50  format(8f10.5)
      do 40 i=1,np
      do 40 m=1,nq
  40  f(i,nx,m)=0d0
      init=1
  10  continue
      if(x.lt.xmin) x=xmin
      if(x.gt.xmax) x=xmax
      if(qsq.lt.qsqmin)  qsq=qsqmin
      if(qsq.gt.qsqmax)  qsq=qsqmax
      xxx=x
      if(x.lt.xx(ntenth)) xxx=dlog10(x/xx(ntenth))+xx(ntenth)
      n=0
  70  n=n+1
      if(xxx.gt.xx(n+1)) goto 70
      a=(xxx-xx(n))/(xx(n+1)-xx(n))
      m=0
  80  m=m+1
      if(qsq.gt.qq(m+1)) goto 80
      b=(qsq-qq(m))/(qq(m+1)-qq(m))
      do 60 i=1,np
      g(i)= (1d0-a)*(1d0-b)*f(i,n,m)   + (1d0-a)*b*f(i,n,m+1)
     &    +       a*(1d0-b)*f(i,n+1,m) +       a*b*f(i,n+1,m+1)
      if(n.ge.ntenth) goto 65
      if(i.eq.5.or.i.eq.7) goto 65
      fac=(1d0-b)*f(i,ntenth,m)+b*f(i,ntenth,m+1)
      g(i)=fac*10d0**(g(i)-fac)
  65  continue
      g(i)=g(i)*(1d0-x)**n0(i)
  60  continue
      upv=g(1)
      dnv=g(2)
      usea=g(4)
      dsea=g(8)
      str=g(6)
      chm=g(5)
      glu=g(3) 
      bot=g(7)
        x=xsave
        qsq=q2save
      return
      end