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psblas3/base/serial/psb_dcssm.f90

101 lines
3.1 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.
!!$
!!$
! File: psb_dcssm.f90
! Subroutine:
! Arguments:
subroutine psb_dcssm(alpha,t,b,beta,c,info,trans,unitd,d)
use psb_spmat_type
use psb_error_mod
implicit none
type(psb_dspmat_type) :: t
real(kind(1.d0)) :: alpha, beta, b(:,:), c(:,:)
integer :: info
character, optional :: trans, unitd
real(kind(1.d0)), optional, target :: d(:)
real(kind(1.d0)), allocatable :: work(:)
real(kind(1.d0)), pointer :: ddl(:)
character :: lt, lu
integer :: iwsz,m,n,lb,lc,err_act
character(len=20) :: name
name='psb_dcssm'
info = 0
call psb_erractionsave(err_act)
if (present(trans)) then
lt = trans
else
lt = 'N'
endif
if (present(unitd)) then
lu = unitd
else
lu = 'U'
endif
if (present(d)) then
ddl => d
else
allocate(ddl(1))
endif
m = t%m
n = min(size(b,2),size(c,2))
lb = size(b,1)
lc = size(c,1)
iwsz = 2*m*n
allocate(work(iwsz))
call dcssm(lt,m,n,alpha,lu,ddl,&
& t%pl,t%fida,t%descra,t%aspk,t%ia1,t%ia2,t%infoa,t%pr,&
& b,lb,beta,c,lc,work,iwsz,info)
if (.not.present(d)) then
deallocate(ddl)
endif
deallocate(work)
call psb_erractionrestore(err_act)
if(info /= 0) then
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
end if
return
end subroutine psb_dcssm