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C
C Copyright (c) 1997 Silvano Bonazzola
C Copyright (c) 1998 Jerome Novak
C
C This file is part of LORENE.
C
C LORENE is free software; you can redistribute it and/or modify
C it under the terms of the GNU General Public License as published by
C the Free Software Foundation; either version 2 of the License, or
C (at your option) any later version.
C
C LORENE is distributed in the hope that it will be useful,
C but WITHOUT ANY WARRANTY; without even the implied warranty of
C MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
C GNU General Public License for more details.
C
C You should have received a copy of the GNU General Public License
C along with LORENE; if not, write to the Free Software
C Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
C
C
subroutine leqt1s(a,n,nlc,nuc,ia,b,m,ib,ijob,xl,ier)
C-------------------------------------------------------------------------
C Version tampon de LEQT1B qui utilise lapack
C
C Relation entre la matrice M(i,j) et son ecriture a bande MB :
C 1/ pour IMSL
C M(i,j) = MB(l,b) <-> i=l et j=l+b-nlc-1
C
C 2/ pour LAPACK
C M(i,j) = MB(nlc+nuc+1+i-j,j), 1 =< j =< n
C max(1,j-nuc) =< i =< min(n,j+nlc)
C-------------------------------------------------------------------------
implicit none
C
C $Id: leqt1s.f,v 1.2 2012/03/30 12:12:42 j_novak Exp $
C $Log: leqt1s.f,v $
C Revision 1.2 2012/03/30 12:12:42 j_novak
C Cleaning of fortran files
C
C Revision 1.1.1.1 2001/11/20 15:19:30 e_gourgoulhon
C LORENE
C
c Revision 1.3 1998/09/30 12:56:23 novak
c parametre nloc mis a 2049 (suffisant??)
c
c Revision 1.2 1997/05/23 11:39:32 hyc
c *** empty log message ***
c
C Revision 1.1 1997/03/19 19:24:51 eric
C Initial revision
C
C
C $Header: /cvsroot/Lorene/F77/Source/leqt1s.f,v 1.2 2012/03/30 12:12:42 j_novak Exp $
C
C
character*120 header
data header/'$Header: /cvsroot/Lorene/F77/Source/leqt1s.f,v 1.2 2012/03/30 12:12:42 j_novak Exp $'/
C Variables d'appel
C------------------
integer n,nlc,nuc,ia,m,ib,ijob,ier
real*8 a(ia,*),xl(ia,*),b(ia,*)
C Variables locales
C------------------
integer nloc,nbloc
parameter (nloc=2049,nbloc=20)
real*8 ab(nbloc,nloc)
integer ipiv(nloc)
integer nb,i,j
C Protection
C-----------
nb = 2*nlc + nuc + 1
if (n.gt.nloc.or.nb.gt.nbloc) stop 'Dim LeqLap'
C Traduction de la matrice
C-------------------------
do j=1,n
do i=max(1,j-nuc),min(n,j+nlc)
ab(nlc+nuc+1+i-j,j) = a(i,j-i+nlc+1)
enddo
enddo
call dgbsv(n,nlc,nuc,m,ab,nbloc,ipiv,b,ib,ier)
if (ier.ne.0) write (*,*) 'Peut-etre ib : ier',ier,ib
return
end
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