c Copyright (C) 2008 VZLU Prague, a.s., Czech Republic c c Author: Jaroslav Hajek <highegg@gmail.com> c c This file is part of OctGPR. c c OctGPR 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 This program 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 this software; see the file COPYING. If not, see c <http://www.gnu.org/licenses/>. c subroutine dspmid(uplo,n,a,AP) c purpose: assistant subroutine. Sets a packed symmetric matrix c (upper storage) to a multiple of identity. c arguments: c uplo (in) indicates upper or lower BLAS packed storage c n (in) dimension of A c a (in) the multiple to set A to c AP (out) A in packed storage (upper triangle column after column) c character uplo integer n,i,j double precision a,AP(*) external lsame logical lsame if (lsame(uplo,'U')) then j = 0 do i = 0,n-1 do j = j+1,j+i AP(j) = 0 end do AP(j) = a end do else j = 1 do i = 0,n-1 AP(j) = a do j = j+1,j+i AP(j) = 0 end do end do end if end subroutine

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