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! Copyright (C) 2020 J. K. Dewhurst and S. Sharma.
! This file is distributed under the terms of the GNU General Public License.
! See the file COPYING for license details.
subroutine vblocalu
use modmain
use modulr
use modomp
implicit none
! local variables
integer ifq,idm,is,ias
integer nrc,nrci,npc,nthd
! automatic arrays
real(8) rfmt1(npcmtmax),rfmt2(npcmtmax)
! subtract the normal Kohn-Sham potential for Q=0
do ias=1,natmtot
is=idxis(ias)
nrc=nrcmt(is)
nrci=nrcmti(is)
npc=npcmt(is)
call rfmtftoc(nrc,nrci,vsmt(:,ias),rfmt1)
call rbsht(nrc,nrci,rfmt1,rfmt2)
vsqmt(1:npc,ias,1)=vsqmt(1:npc,ias,1)-rfmt2(1:npc)
end do
vsqir(1:ngtot,1)=vsqir(1:ngtot,1)-vsir(1:ngtot)
call holdthd(2*nfqrz,nthd)
!$OMP PARALLEL DO DEFAULT(SHARED) &
!$OMP PRIVATE(ias,is,nrc,nrci) &
!$OMP SCHEDULE(DYNAMIC) &
!$OMP NUM_THREADS(nthd)
do ifq=1,nfqrz
do ias=1,natmtot
is=idxis(ias)
nrc=nrcmt(is)
nrci=nrcmti(is)
! multiply the muffin-tin potential by the radial integration weights
call zfcmtwr(nrc,nrci,wr2cmt(:,is),vsqmt(:,ias,ifq))
end do
end do
!$OMP END PARALLEL DO
call freethd(nthd)
if (.not.spinpol) return
! subtract the normal Kohn-Sham magnetic field for Q=0 in the muffin-tins
do idm=1,ndmag
do ias=1,natmtot
is=idxis(ias)
npc=npcmt(is)
bsqmt(1:npc,ias,idm,1)=bsqmt(1:npc,ias,idm,1)-bsmt(1:npc,ias,idm)
end do
end do
call holdthd(2*nfqrz,nthd)
!$OMP PARALLEL DO DEFAULT(SHARED) &
!$OMP PRIVATE(idm,ias,is,nrc,nrci) &
!$OMP SCHEDULE(DYNAMIC) &
!$OMP NUM_THREADS(nthd)
do ifq=1,nfqrz
do idm=1,ndmag
do ias=1,natmtot
is=idxis(ias)
nrc=nrcmt(is)
nrci=nrcmti(is)
! multiply the muffin-tin field by the radial integration weights
call zfcmtwr(nrc,nrci,wr2cmt(:,is),bsqmt(:,ias,idm,ifq))
end do
end do
end do
!$OMP END PARALLEL DO
call freethd(nthd)
! subtract the normal Kohn-Sham magnetic field for Q=0 in the interstitial
do idm=1,ndmag
bsqir(1:ngtot,idm,1)=bsqir(1:ngtot,idm,1)-bsir(1:ngtot,idm)
end do
end subroutine
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