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psblas3/base/serial/psb_zipcoo2csr.f90

213 lines
5.9 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 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_zipcoo2csr.f90
! Subroutine:
! Arguments:
subroutine psb_zipcoo2csr(a,info,rwshr)
use psb_spmat_type
use psb_const_mod
use psb_realloc_mod
use psb_serial_mod, only : psb_fixcoo
use psb_error_mod
use psb_string_mod
implicit none
!....Parameters...
Type(psb_zspmat_type), intent(inout) :: A
Integer, intent(out) :: info
logical, optional :: rwshr
integer, allocatable :: iaux(:), itemp(:)
!locals
logical :: rwshr_
Integer :: nza, nr, i,j,irw, idl,err_act
Integer, Parameter :: maxtry=8
integer :: debug_level, debug_unit
character(len=20) :: name
name='psb_ipcoo2csr'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
if (debug_level >= psb_debug_serial_)&
& write(debug_unit,*) trim(name),': start',a%fida,a%m
if (toupper(a%fida) /= 'COO') then
write(debug_unit,*) trim(name),': Invalid input ',a%fida
info = -1
call psb_errpush(info,name)
goto 9999
end if
if (present(rwshr)) then
rwshr_ = rwshr
else
rwshr_ = .false.
end if
call psb_fixcoo(a,info)
nr = a%m
nza = a%infoa(psb_nnz_)
allocate(iaux(max(nr+1,1)),stat=info)
if (info /= 0) then
info=4025
call psb_errpush(info,name,a_err='integer',i_err=(/max(nr+1,1),0,0,0,0/))
goto 9999
end if
if (debug_level >= psb_debug_serial_)&
& write(debug_unit,*) trim(name),&
& ': out of fixcoo',nza,nr,size(a%ia2),size(iaux)
call psb_transfer(a%ia1,itemp,info)
call psb_transfer(a%ia2,a%ia1,info)
call psb_transfer(iaux,a%ia2,info)
!
! This routine can be used in two modes:
! 1. Normal: just look at the row indices and trust them. This
! implies putting in empty rows where needed. In this case you
! can get in trouble if A%M < A%IA1(NZA)
! 2. Shrink mode: disregard the actual value of the row indices,
! just treat them as ident markers. In this case you can get in
! trouble when the number of distinct row indices is greater
! than A%M
!
!
a%ia2(1) = 1
if (nza <= 0) then
do i=1,nr
a%ia2(i+1) = a%ia2(i)
end do
else
if (rwshr_) then
j = 1
i = 1
irw = itemp(j)
do j=1, nza
if (itemp(j) /= irw) then
a%ia2(i+1) = j
irw = itemp(j)
i = i + 1
if (i>nr) then
write(debug_unit,*) trim(name),': RWSHR=.true. : ',&
& i, nr,' Expect trouble!'
exit
end if
endif
enddo
do
if (i>=nr+1) exit
a%ia2(i+1) = j
i = i + 1
end do
else
if (nr < itemp(nza)) then
write(debug_unit,*) trim(name),': RWSHR=.false. : ',&
&nr,itemp(nza),' Expect trouble!'
info = 12
end if
j = 1
i = 1
irw = itemp(j)
outer: do
inner: do
if (i >= irw) exit inner
if (i>nr) then
write(debug_unit,*) trim(name),&
& 'Strange situation: i>nr ',i,nr,j,nza,irw,idl
exit outer
end if
a%ia2(i+1) = a%ia2(i)
i = i + 1
end do inner
j = j + 1
if (j > nza) exit
if (itemp(j) /= irw) then
a%ia2(i+1) = j
irw = itemp(j)
i = i + 1
endif
if (i>nr) exit
enddo outer
!
! Cleanup empty rows at the end
!
if (j /= (nza+1)) then
write(debug_unit,*) trim(name),': Problem from loop :',j,nza
info = 13
endif
do
if (i>nr) exit
a%ia2(i+1) = j
i = i + 1
end do
endif
end if
a%fida='CSR'
a%infoa(psb_upd_) = psb_upd_srch_
deallocate(itemp,stat=info)
if (info /= 0) then
info=4010
call psb_errpush(info,name,a_err='deallocate')
goto 9999
end if
if (debug_level >= psb_debug_serial_)&
& write(debug_unit,*) trim(name),': end'
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
end Subroutine psb_zipcoo2csr