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qslayer.f
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subroutine qslayer(ierr)
implicit none
integer ierr
c
include 'qsglobal.h'
c
integer l,n,li,lp0
double precision zswap
double precision z(nzmax),z0(nzmax)
c
lp0=1
z0(lp0)=0.d0
do n=1,n0-1
lp0=lp0+1
z0(lp0)=z0(lp0-1)+h(n)
enddo
lp0=lp0+1
z0(lp0)=zs
lp0=lp0+1
z0(lp0)=zr
c
c sort the z0-profile
c
do l=1,lp0-1
do li=l+1,lp0
if(z0(li).lt.z0(l))then
zswap=z0(l)
z0(l)=z0(li)
z0(li)=zswap
endif
enddo
enddo
c
c delete duplicates
c
lp=1
z(lp)=0.d0
do l=2,lp0
if(z0(l).gt.z(lp))then
hp(lp)=z0(l)-z(lp)
lp=lp+1
z(lp)=z0(l)
endif
enddo
hp(lp)=0.d0
c
c determine ls,lzr
c
do l=1,lp
if(z(l).eq.zs)ls=l
if(z(l).eq.zr)lzr=l
enddo
c
c determine layer no of each depth
c
li=1
zswap=h(1)
nno(1)=1
do l=2,lp
if(z(l).ge.zswap.and.li.lt.n0)then
li=li+1
zswap=zswap+h(li)
endif
nno(l)=li
enddo
c
c for the receiver site
c
if(l0rs.le.0)then
n0rs=0
else
lp0=1
z0(lp0)=0.d0
do n=1,n0rs-1
lp0=lp0+1
z0(lp0)=z0(lp0-1)+hrs(n)
enddo
lp0=lp0+1
z0(lp0)=zrrs
c
c sort the z0-profile
c
do l=1,lp0-1
do li=l+1,lp0
if(z0(li).lt.z0(l))then
zswap=z0(l)
z0(l)=z0(li)
z0(li)=zswap
endif
enddo
enddo
c
c delete duplicates
c
lprs=1
z(lprs)=0.d0
do l=2,lp0
if(z0(l).gt.z(lprs))then
hprs(lprs)=z0(l)-z(lprs)
lprs=lprs+1
z(lprs)=z0(l)
endif
enddo
hprs(lprs)=0.d0
c
c determine lzrrs
c
do l=1,lprs
if(z(l).eq.zrrs)lzrrs=l
enddo
c
c determine layer no of each depth
c
li=1
zswap=hrs(1)
nnors(1)=1
do l=2,lprs
if(z(l).ge.zswap.and.li.lt.n0rs)then
li=li+1
zswap=zswap+hrs(li)
endif
nnors(l)=li
enddo
endif
c
ierr=0
return
end