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401 lines
12 KiB
Fortran
401 lines
12 KiB
Fortran
! File: psb_check_mod.f90
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module psb_check_mod
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! interface
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! module procedure psb_chkvect
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! end interface
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! interface
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! module procedure psb_chkglobvect
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! end interface
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! interface
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! module procedure psb_chkmat
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! end interface
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contains
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! Subroutine: psb_chkvect
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! psb_chkvect checks the validity of a descriptor vector desc_dec, the
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! related global indexes ix, jx and the leading dimension lldx. It also
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! eventually computes the starting local indexes (iix,jjx) corresponding
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! to the submatrix starting globally at the entry pointed by (ix,jx).
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! Finally, if an inconsistency is found among its parameters ix, jx,
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! descdec and lldx, the routine returns an error code in info.
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!
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! Parameters:
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! m - integer. The number of rows of the dense matrix X being operated on.
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! n - integer. The number of columns of the dense matrix X being operated on.
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! lldx - integer. The leading dimension of the local dense matrix X.
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! ix - integer. X's global row index, which points to the beginning
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! of the dense submatrix which is to be operated on.
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! jx - integer. X's global column index, which points to the beginning
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! of the dense submatrix which is to be operated on.
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! desc_dec - integer,dimension(:). Is the matrix_data array.
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! info - integer. Eventually returns an error code.
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! iix - integer(optional). The local rows starting index of the submatrix.
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! jjx - integer(optional). The local columns starting index of the submatrix.
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subroutine psb_chkvect( m, n, lldx, ix, jx, desc_dec, info, iix, jjx)
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use psb_const_mod
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use psb_error_mod
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implicit none
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integer, intent(in) :: m,n,ix,jx,lldx
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integer, intent(in) :: desc_dec(:)
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integer, intent(out) :: info
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integer, optional :: iix, jjx
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! locals
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integer :: err_act, int_err(5)
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character(len=20) :: name, ch_err
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info=0
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name='psb_chkvect'
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call psb_erractionsave(err_act)
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if (m.lt.0) then
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info=10
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int_err(1) = 1
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int_err(2) = m
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else if (n.lt.0) then
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info=10
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int_err(1) = 3
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int_err(2) = n
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else if ((ix.lt.1) .and. (m.ne.0)) then
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info=20
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int_err(1) = 4
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int_err(2) = ix
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else if ((jx.lt.1) .and. (n.ne.0)) then
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info=20
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int_err(1) = 5
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int_err(2) = jx
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else if (desc_dec(psb_n_col_).lt.0) then
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info=40
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int_err(1) = 6
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int_err(2) = psb_n_col_
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int_err(3) = desc_dec(psb_n_col_)
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else if (desc_dec(psb_n_row_).lt.0) then
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info=40
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int_err(1) = 6
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int_err(2) = psb_n_row_
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int_err(3) = desc_dec(psb_n_row_)
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else if (lldx.lt.desc_dec(psb_n_col_)) then
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info=50
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int_err(1) = 3
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int_err(2) = lldx
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int_err(3) = 6
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int_err(4) = psb_n_col_
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int_err(5) = desc_dec(psb_n_col_)
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else if (desc_dec(psb_n_).lt.m) then
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info=60
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int_err(1) = 1
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int_err(2) = m
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int_err(3) = 6
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int_err(4) = psb_n_
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int_err(5) = desc_dec(psb_n_)
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else if (desc_dec(psb_n_).lt.ix) then
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info=60
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int_err(1) = 4
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int_err(2) = ix
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int_err(3) = 6
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int_err(4) = psb_n_
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int_err(5) = desc_dec(psb_n_)
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else if (desc_dec(psb_m_).lt.jx) then
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info=60
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int_err(1) = 5
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int_err(2) = jx
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int_err(3) = 6
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int_err(4) = psb_m_
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int_err(5) = desc_dec(psb_m_)
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else if (desc_dec(psb_n_).lt.(ix+m-1)) then
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info=80
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int_err(1) = 1
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int_err(2) = m
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int_err(3) = 4
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int_err(4) = ix
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end if
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if (info.ne.0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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! Compute local indices for submatrix starting
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! at global indices ix and jx
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if(present(iix)) iix=ix ! (for our applications iix=ix))
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if(present(jjx)) jjx=ix ! (for our applications jjx=jx))
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_chkvect
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!
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! Subroutine: psb_chkglobvect
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! psb_chkglobvect checks the validity of a descriptor vector desc_dec, the
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! related global indexes ix, jx and the leading dimension lldx.
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! If an inconsistency is found among its parameters ix, jx,
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! descdec and lldx, the routine returns an error code in info.
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!
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! Parameters:
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! m - integer. The number of rows of the dense matrix X being operated on.
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! n - integer. The number of columns of the dense matrix X being operated on.
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! lldx - integer. The leading dimension of the local dense matrix X.
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! ix - integer. X's global row index, which points to the beginning
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! of the dense submatrix which is to be operated on.
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! jx - integer. X's global column index, which points to the beginning
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! of the dense submatrix which is to be operated on.
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! desc_dec - integer,dimension(:). Is the matrix_data array.
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! info - integer. Eventually returns an error code.
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!
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subroutine psb_chkglobvect( m, n, lldx, ix, jx, desc_dec, info)
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use psb_const_mod
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use psb_error_mod
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implicit none
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integer, intent(in) :: m,n,ix,jx,lldx
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integer, intent(in) :: desc_dec(:)
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integer, intent(out) :: info
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! locals
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integer :: err_act, int_err(5)
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character(len=20) :: name, ch_err
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info=0
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name='psb_chkglobvect'
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call psb_erractionsave(err_act)
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if (m.lt.0) then
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info=10
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int_err(1) = 1
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int_err(2) = m
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else if (n.lt.0) then
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info=10
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int_err(1) = 3
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int_err(2) = n
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else if ((ix.lt.1) .and. (m.ne.0)) then
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info=20
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int_err(1) = 4
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int_err(2) = ix
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else if ((jx.lt.1) .and. (n.ne.0)) then
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info=20
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int_err(1) = 5
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int_err(2) = jx
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else if (desc_dec(psb_n_col_).lt.0) then
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info=40
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int_err(1) = 6
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int_err(2) = psb_n_col_
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int_err(3) = desc_dec(psb_n_col_)
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else if (desc_dec(psb_n_row_).lt.0) then
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info=40
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int_err(1) = 6
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int_err(2) = psb_n_row_
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int_err(3) = desc_dec(psb_n_row_)
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else if (lldx.lt.desc_dec(psb_m_)) then
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info=50
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int_err(1) = 3
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int_err(2) = lldx
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int_err(3) = 6
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int_err(4) = psb_n_col_
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int_err(5) = desc_dec(psb_n_col_)
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else if (desc_dec(psb_n_).lt.m) then
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info=60
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int_err(1) = 1
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int_err(2) = m
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int_err(3) = 6
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int_err(4) = psb_n_
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int_err(5) = desc_dec(psb_n_)
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else if (desc_dec(psb_n_).lt.ix) then
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info=60
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int_err(1) = 4
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int_err(2) = ix
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int_err(3) = 6
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int_err(4) = psb_n_
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int_err(5) = desc_dec(psb_n_)
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else if (desc_dec(psb_m_).lt.jx) then
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info=60
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int_err(1) = 5
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int_err(2) = jx
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int_err(3) = 6
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int_err(4) = psb_m_
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int_err(5) = desc_dec(psb_m_)
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else if (desc_dec(psb_n_).lt.(ix+m-1)) then
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info=80
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int_err(1) = 1
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int_err(2) = m
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int_err(3) = 4
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int_err(4) = ix
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end if
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if (info.ne.0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_chkglobvect
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!
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! Subroutine: psb_chkmat
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! pbmatvect checks the validity of a descriptor vector DESCDEC, the
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! related global indexes IA, JA. It also computes the starting local
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! indexes (IIA,JJA) corresponding to the submatrix starting globally at
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! the entry pointed by (IA,JA). Finally, if an inconsitency is found among
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! its parameters ia, ja and desc_A, the routine returns an error code in
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! info.
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!
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! Parameters:
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! m - integer. The number of rows of the matrix being operated on.
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! n - integer. The number of columns of the matrix being operated on.
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! ia - integer. a's global row index, which points to the beginning
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! of the submatrix which is to be operated on.
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! ja - integer. a's global column index, which points to the beginning
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! of the submatrix which is to be operated on.
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! desc_dec - integer,dimension(:). Is the matrix_data array.
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! info - integer. Eventually returns an error code.
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! iia - integer(optional). The local rows starting index of the submatrix.
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! jja - integer(optional). The local columns starting index of the submatrix.
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!
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subroutine psb_chkmat( m, n, ia, ja, desc_dec, info, iia, jja)
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use psb_const_mod
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use psb_error_mod
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implicit none
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integer, intent(in) :: m,n,ia,ja
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integer, intent(in) :: desc_dec(:)
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integer, intent(out) :: info
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integer, optional :: iia, jja
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! locals
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integer :: err_act, int_err(5)
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character(len=20) :: name, ch_err
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info=0
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name='psb_chkmat'
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call psb_erractionsave(err_act)
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if (m.lt.0) then
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info=10
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int_err(1) = 1
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int_err(2) = m
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else if (n.lt.0) then
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info=10
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int_err(1) = 3
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int_err(2) = n
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else if ((ia.lt.1) .and. (m.ne.0)) then
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info=20
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int_err(1) = 4
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int_err(2) = ia
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else if ((ja.lt.1) .and. (n.ne.0)) then
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info=20
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int_err(1) = 5
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int_err(2) = ja
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else if (desc_dec(psb_n_col_).lt.0) then
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info=40
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int_err(1) = 6
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int_err(2) = psb_n_col_
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int_err(3) = desc_dec(psb_n_col_)
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else if (desc_dec(psb_n_row_).lt.0) then
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info=40
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int_err(1) = 6
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int_err(2) = psb_n_row_
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int_err(3) = desc_dec(psb_n_row_)
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else if (desc_dec(psb_m_).lt.m) then
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info=60
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int_err(1) = 1
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int_err(2) = m
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int_err(3) = 5
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int_err(4) = psb_m_
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int_err(5) = desc_dec(psb_m_)
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else if (desc_dec(psb_m_).lt.m) then
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info=60
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int_err(1) = 2
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int_err(2) = n
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int_err(3) = 5
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int_err(4) = psb_m_
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int_err(5) = desc_dec(psb_m_)
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else if (desc_dec(psb_m_).lt.ia) then
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info=60
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int_err(1) = 3
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int_err(2) = ia
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int_err(3) = 5
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int_err(4) = psb_m_
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int_err(5) = desc_dec(psb_m_)
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else if (desc_dec(psb_n_).lt.ja) then
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info=60
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int_err(1) = 4
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int_err(2) = ja
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int_err(3) = 5
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int_err(4) = psb_n_
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int_err(5) = desc_dec(psb_n_)
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else if (desc_dec(psb_m_).lt.(ia+m-1)) then
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info=80
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int_err(1) = 1
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int_err(2) = m
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int_err(3) = 3
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int_err(4) = ia
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else if (desc_dec(psb_n_).lt.(ja+n-1)) then
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info=80
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int_err(1) = 2
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int_err(2) = n
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int_err(3) = 4
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int_err(4) = ja
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end if
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if (info.ne.0) then
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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end if
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! Compute local indices for submatrix starting
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! at global indices ix and jx
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if(present(iia).and.present(jja)) then
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if (desc_dec(psb_n_row_).gt.0) then
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iia=1
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jja=1
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else
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iia=desc_dec(psb_n_row_)+1
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jja=desc_dec(psb_n_col_)+1
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end if
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_chkmat
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end module psb_check_mod
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