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c This routine reads the MOL file and initializes data in /MOL/.
c It should be called only by sb_com_mol(), but its main purpose is
c to recast icore() and dcore() addresses into convenient variables.
c
c Loads primitive coefficients of the basis.
subroutine sb_prim(comppopv,compmemb,nshellatom,nshellprim,
& nshellao,primoff,aooff,alpha,primcoef,
& dpmcoef,nprimao,nprimaol)
implicit none
#include "maxangshell.par"
#include "mol.com"
#include <machsp.com>
integer comppopv(*),compmemb(*),nshellatom(*),
& nshellprim(maxshell,*),nshellao(maxshell,natoms),
& primoff(maxshell,*),aooff(maxshell,*)
double precision alpha(*),primcoef(totprim,*)
integer iip,ikk,ill,iloo,ioo,ijj,
& nprimao(naobasfn),nprimaol(naobasfn),incre
double precision nthres,
& dpmcoef(totprim,naobasfn)
double precision pi,s,tmp,xnorm,ai,aj,dpow
integer
& iorbit,ishell,ishelloff,ishellang,isub,iang,
& iequiv,nsubshell(maxangshell),nshell,iatom,iprimoff,iaooff,
& isubprim,isubao,i,nline,iprim0,iprim1,iprim,iao0,iao1,iao,
& jprim,jprim0,jao0,jprim1,jao1,jao,icount,iequivatom,iunit
character*80 line,molfil
call callstack_push('SB_PRIM')
pi = acos(-1.d0)
nthres=10.d0**(-12.d0)
9000 format(a25,12i5)
9010 format(2i5)
9020 format(4f18.10)
iunit=3
call gfname('MOL',molfil,i)
open(unit=iunit,file=molfil,form='formatted',status='old')
c Set nshellprim and nshellao
rewind(iunit)
read(iunit,'(a)') line
read(iunit,'(a)') line
read(iunit,'(a)') line
read(iunit,'(a)') line
read(iunit,'(a)') line
c iorbit the orbit number
c icount the pointer to compmemb for the current atom of the current orbit
c iatom the atom at that location in compmemb
c iequivatom the current equivalent atom
icount=1
do iorbit=1,compnorb
iatom=compmemb(icount)
icount=icount+1
read(iunit,9000) line,nshell,
& (nsubshell(ishell),ishell=1,nshell)
do iip=1,nshell
end do
read(iunit,'(a)') line
ishellang=0
ishelloff=1
do ishell=1,nshell
c ishelloff=1,2,5,11,21,... (where the first shell of ishellang starts)
c ishellang=1,3,6,10,15,... (1s, 3p, 6d, 10f, etc)
ishelloff=ishelloff+ishellang
ishellang=ishell*(ishell+1)/2
do isub=1,nsubshell(ishell)
read(iunit,9010) isubprim,isubao
do iang=ishelloff,ishelloff+ishellang-1
nshellprim(iang,iatom)=nshellprim(iang,iatom)+isubprim
nshellao(iang,iatom)=nshellao(iang,iatom)+isubao
end do
nline=(isubao-3)/4
if ((isubao-3).gt.(nline*4)) nline=nline+1
nline=(nline+1)*isubprim
do i=1,nline
read(iunit,'(a)') line
end do
end do
end do
c Copy primitive and ao info to equivalent atoms
if (comppopv(iorbit).gt.1) then
do iequiv=2,comppopv(iorbit)
iequivatom=compmemb(icount)
icount=icount+1
do ishell=1,nshellatom(iatom)
nshellprim(ishell,iequivatom)=nshellprim(ishell,iatom)
nshellao(ishell,iequivatom)=nshellao(ishell,iatom)
end do
end do
end if
c end do iorbit=1,compnorb
end do
c Set up primoff and aooff
iprimoff=1
iaooff=1
do iatom=1,natoms
do ishell=1,nshellatom(iatom)
primoff(ishell,iatom)=iprimoff
iprimoff=iprimoff+nshellprim(ishell,iatom)
aooff(ishell,iatom)=iaooff
iaooff=iaooff+nshellao(ishell,iatom)
end do
end do
c Read in the exponents and primitive coefficients (renormalizing them)
rewind(iunit)
read(iunit,'(a)') line
read(iunit,'(a)') line
read(iunit,'(a)') line
read(iunit,'(a)') line
read(iunit,'(a)') line
icount=1
do iorbit=1,compnorb
iatom=compmemb(icount)
read(iunit,9000) line,nshell,
& (nsubshell(ishell),ishell=1,nshell)
read(iunit,'(a)') line
ishellang=0
ishelloff=1
do ishell=1,nshell
ishelloff=ishelloff+ishellang
ishellang=ishell*(ishell+1)/2
c iprim0,iprim1 : the first and last primitives in the current set
c iao0,iao1 : the first and last AOs in the current set
iprim0=primoff(ishelloff,iatom)
iao0=aooff(ishelloff,iatom)
do isub=1,nsubshell(ishell)
read(iunit,9010) isubprim,isubao
iprim1=iprim0+isubprim-1
iao1=iao0+isubao-1
c Read all exponents and coefficients
do iprim=iprim0,iprim1
read(iunit,9020) alpha(iprim),
& (primcoef(iprim,iao),iao=iao0,iao1)
do iao=iao0,iao1
end do
end do
c Renormalize
do iao=iao0,iao1
s=0.d0
dpow=dble(ishell)+0.5d0
do iprim=iprim0,iprim1
ai=alpha(iprim)
do jprim=1,iprim
aj=alpha(jprim)
tmp=primcoef(iprim,iao)
& *primcoef(jprim,iao)
& *(2.d0*sqrt(ai*aj)/(ai+aj))**dpow
s=s+tmp
if (iprim.ne.jprim) s=s+tmp
end do
end do
xnorm=((0.5d0/pi)**(3.d0*0.25d0))/sqrt(s)
dpow=0.5d0*dpow
do iprim=iprim0,iprim1
primcoef(iprim,iao)=primcoef(iprim,iao)
& *xnorm
& *(4.d0*alpha(iprim))**dpow
end do
end do
iao0=iao0+isubao
iprim0=iprim0+isubprim
end do
end do
c Copy to equivalent blocks (given iorbit,ishell)
c This time we have to loop over ALL equivalent atoms since we'll also
c need to fill in the remaining shells of the first atom.
do iequiv=1,comppopv(iorbit)
iequivatom=compmemb(icount)
icount=icount+1
ishellang=0
ishelloff=1
do ishell=1,nshell
ishelloff=ishelloff+ishellang
ishellang=ishell*(ishell+1)/2
iprim0=primoff(ishelloff,iatom)
iao0=aooff(ishelloff,iatom)
do iang=ishelloff,ishelloff+ishellang-1
jprim0=primoff(iang,iequivatom)
jprim1=jprim0+nshellprim(iang,iequivatom)-1
jao0=aooff(iang,iequivatom)
jao1=jao0+nshellao(iang,iequivatom)-1
do jprim=jprim0,jprim1
iprim=(jprim-jprim0)+iprim0
alpha(jprim)=alpha(iprim)
do jao=jao0,jao1
iao=(jao-jao0)+iao0
primcoef(jprim,jao)=primcoef(iprim,iao)
end do
c end do jprim=jprim0,jprim1
end do
c end do iang=ishelloff,ishelloff+ishellang-1
end do
c end do ishell=1,nshell
end do
c end do iequiv=1,comppopv(iorbit)
end do
c end do iorbit=1,compnorb
end do
close(iunit)
c iloo=1
c nprimao(1)=1
c nprimaol(1)=0
do ikk=1,naobasfn
incre=0
do ill=1,totprim
if(abs(primcoef(ill,ikk)) .gt. nthres) then
if(incre .eq.0) then
nprimao(ikk)=ill
nprimaol(ikk)=ill
incre=incre+1
else
nprimaol(ikk)=ill
end if
end if
end do
end do
c if(ill .le. nprimaol(ikk-1)) then
c if(incre .eq.0) then
c nprimao(ikk)=ill
c end if
c incre=incre+1
c iloo=ill
c dpmcoef(iloo,ikk)=primcoef(ill,ikk)
c iloo=iloo+1
c else
c dpmcoef(iloo,ikk)=primcoef(ill,ikk)
c iloo=iloo+1
c end if
c end if
c end do
c nprimaol(ikk)=iloo-1
c write(*,*) ikk,nprimaol(ikk)
c if(ikk .lt. naobasfn) then
c nprimao(ikk+1)=iloo
c end if
c end do
c call putrec(1,'JOBRAC','CCOEFFC',totprim*naobasfn*iintfp
c & ,dpmcoef)
call putrec(1,'JOBARC','NPRIMST',naobasfn,nprimao)
call putrec(1,'JOBARC','NPRIMLT',naobasfn,nprimaol)
call callstack_pop
return
end
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