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amg4psblas/krylov/psb_prec_mod.F90

127 lines
4.9 KiB
Fortran

!!$
!!$
!!$ MLD2P4 version 1.0
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
!!$ based on PSBLAS (Parallel Sparse BLAS version 2.2)
!!$
!!$ (C) Copyright 2008
!!$
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$ Pasqua D'Ambra ICAR-CNR, Naples
!!$ Daniela di Serafino Second University of Naples
!!$
!!$ 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 MLD2P4 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 MLD2P4 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.
!!$
!!$
! File: psb_prec_mod.f90.
!
! Module: psb_prec_mod
!
! This version of the preconditioner module psb_prec_mod renames "on the fly"
! the MLD2P4 preconditioner routines and data types so that the Krylov solvers
! in PSBLAS can be tricked into using the MLD2P4 versions instead of the original
! ones. Since there is no native runtime polymorphism this implies a recompilation,
! but thanks to the renaming feature of Fortran 95 (and to the compatibility of
! the calling sequences) there is no need to change the source code for the
! Krylov methods.
!
module psb_prec_mod
#if (__GNUC__==4) && (__GNUC_MINOR__<=2)
!
! GNU Fortran 4.2.
! Workaround for PR 32634, it is fixed in GNU Fortran 4.3, will
! it be fixed in 4.2???
!
use mld_prec_type, &
& psb_dbaseprc_type => mld_dbaseprc_type,&
& psb_zbaseprc_type => mld_zbaseprc_type,&
& psb_dprec_type => mld_dprec_type,&
& psb_zprec_type => mld_zprec_type,&
& psb_base_precfree => mld_base_precfree,&
& psb_nullify_baseprec => mld_nullify_baseprec,&
& psb_prec_descr => mld_prec_descr,&
& psb_prec_short_descr => mld_prec_short_descr
use mld_prec_mod
interface psb_precbld
module procedure mld_dprecbld, mld_zprecbld
end interface
interface psb_precinit
module procedure mld_dprecinit, mld_zprecinit
end interface
interface psb_precset
module procedure mld_dprecseti, mld_dprecsetd,&
& mld_zprecseti, mld_zprecsetd
end interface
interface psb_precfree
module procedure mld_dprecfree, mld_zprecfree
end interface
interface psb_precaply
module procedure mld_dprec_aply, mld_dprec_aply1, &
& mld_zprec_aply, mld_zprec_aply1
end interface
#else
use mld_prec_mod, &
& psb_sbaseprc_type => mld_sbaseprc_type,&
& psb_dbaseprc_type => mld_dbaseprc_type,&
& psb_cbaseprc_type => mld_cbaseprc_type,&
& psb_zbaseprc_type => mld_zbaseprc_type,&
& psb_sprec_type => mld_sprec_type,&
& psb_dprec_type => mld_dprec_type,&
& psb_cprec_type => mld_cprec_type,&
& psb_zprec_type => mld_zprec_type,&
& psb_base_precfree => mld_base_precfree,&
& psb_nullify_baseprec => mld_nullify_baseprec,&
& psb_prec_descr => mld_prec_descr,&
& psb_prec_short_descr => mld_prec_short_descr,&
& psb_precbld => mld_precbld, &
& psb_precinit => mld_precinit, &
& psb_precfree => mld_precfree, &
& psb_precset => mld_precset, &
& psb_precaply => mld_precaply
#endif
integer, parameter :: psb_noprec_=mld_noprec_, psb_diag_=mld_diag_,&
& psb_bjac_=mld_bjac_
interface psb_sizeof
module procedure mld_dprec_sizeof, mld_zprec_sizeof, &
& mld_dbaseprc_sizeof, mld_zbaseprc_sizeof
end interface
end module psb_prec_mod