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psblas3/prec/psb_dprecinit.f90

71 lines
2.8 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$
!!$ Redistribution and use in source and binary forms, with or without
!!$ modification, are permitted provided that the following conditions
!!$ are met:
!!$ 1. Redistributions of source code must retain the above copyright
!!$ notice, this list of conditions and the following disclaimer.
!!$ 2. Redistributions in binary form must reproduce the above copyright
!!$ notice, this list of conditions, and the following disclaimer in the
!!$ documentation and/or other materials provided with the distribution.
!!$ 3. The name of the PSBLAS group or the names of its contributors may
!!$ not be used to endorse or promote products derived from this
!!$ software without specific written permission.
!!$
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$ POSSIBILITY OF SUCH DAMAGE.
!!$
!!$
subroutine psb_dprecinit(p,ptype,info)
use psb_base_mod
use psb_prec_mod, psb_protect_name => psb_dprecinit
implicit none
type(psb_dprec_type), intent(inout) :: p
character(len=*), intent(in) :: ptype
integer, intent(out) :: info
info = 0
call psb_realloc(psb_ifpsz,p%iprcparm,info)
if (info == 0) call psb_realloc(psb_rfpsz,p%rprcparm,info)
if (info /= 0) return
select case(psb_toupper(ptype(1:len_trim(ptype))))
case ('NONE','NOPREC')
p%iprcparm(:) = 0
p%iprcparm(psb_p_type_) = psb_noprec_
p%iprcparm(psb_f_type_) = psb_f_none_
case ('DIAG')
p%iprcparm(:) = 0
p%iprcparm(psb_p_type_) = psb_diag_
p%iprcparm(psb_f_type_) = psb_f_none_
case ('BJAC')
p%iprcparm(:) = 0
p%iprcparm(psb_p_type_) = psb_bjac_
p%iprcparm(psb_f_type_) = psb_f_ilu_n_
p%iprcparm(psb_ilu_fill_in_) = 0
case default
write(0,*) 'Unknown preconditioner type request "',ptype,'"'
info = 2
end select
end subroutine psb_dprecinit