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psblas3/base/serial/psb_zspgetrow.f90

131 lines
4.7 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_zspgetrow.f90
! Subroutine: psb_zspgetrow
! Gets one or more rows from a sparse matrix.
! Arguments:
! irw - integer, input The row to be extracted
! a - type(psb_zspmat_type),input The sparse matrix
! nz - integer, output The number of entries
! ia(:) - integer, allocatable, inout The output row indices
! ja(:) - integer, allocatable, inout The output col indices
! val(:) - complex, allocatable,inout The coefficients
! info - integer, output Error code
! iren(:) - integer, input,optional Renumbering of indices
! lrw - integer, input,optional Extract rows irw:lrw, default lrw=irw
! append - logical, input,optional Should we append to already existing
! partial output?
! nzin - integer, input, optional If appending, how many entries were already
! occupied.
!
subroutine psb_zspgetrow(irw,a,nz,ia,ja,val,info,iren,lrw,append,nzin)
! Output is always in COO format
use psb_spmat_type
use psb_const_mod
use psb_getrow_mod
use psb_string_mod
use psb_serial_mod, psb_protect_name => psb_zspgetrow
implicit none
type(psb_zspmat_type), intent(in) :: a
integer, intent(in) :: irw
integer, intent(out) :: nz
integer, allocatable, intent(inout) :: ia(:), ja(:)
complex(kind(1.d0)), allocatable, intent(inout) :: val(:)
integer,intent(out) :: info
logical, intent(in), optional :: append
integer, intent(in), optional :: iren(:)
integer, intent(in), optional :: lrw, nzin
logical :: append_
integer :: nzin_, lrw_, irw_, err_act
character(len=20) :: name, ch_err
name='psb_spgetrow'
info = 0
call psb_erractionsave(err_act)
irw_ = irw
if (present(lrw)) then
lrw_ = lrw
else
lrw_ = irw
endif
if (lrw_ < irw) then
write(0,*) 'SPGTBLK input error: fixing lrw',irw,lrw_
lrw_ = irw
end if
if (present(append)) then
append_=append
else
append_=.false.
endif
if ((append_).and.(present(nzin))) then
nzin_ = nzin
else
nzin_ = 0
endif
select case (tolower(a%fida))
case ('csr')
call csr_getrow(irw_,a,nz,ia,ja,val,nzin_,append_,lrw_,info,iren)
case ('coo')
call coo_getrow(irw_,a,nz,ia,ja,val,nzin_,append_,lrw_,info,iren)
case ('jad')
call jad_getrow(irw_,a,nz,ia,ja,val,nzin_,append_,lrw_,info,iren)
case default
info=136
ch_err=a%fida(1:3)
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end select
if (info /= 0) goto 9999
!!$ call psb_erractionrestore(err_act)
return
9999 continue
!!$ call psb_erractionrestore(err_act)
call psb_erractionsave(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine psb_zspgetrow