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95 lines
2.4 KiB
Fortran
95 lines
2.4 KiB
Fortran
! File: psb_dsprn.f90
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!
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! Subroutine: psb_dsprn
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! Reinit sparse matrix structure for psblas routines.
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!
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! Parameters:
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! a - type(<psb_dspmat_type>). The sparse matrix to be reinitiated.
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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!
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Subroutine psb_dsprn(a, desc_a,info)
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use psb_descriptor_type
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use psb_spmat_type
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use psb_serial_mod
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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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!....Parameters...
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Type(psb_desc_type), intent(in) :: desc_a
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Type(psb_dspmat_type), intent(inout) :: a
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integer, intent(out) :: info
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!locals
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Integer :: icontxt
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Integer :: nprow,npcol,myrow,mycol,err,err_act
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logical, parameter :: debug=.false.
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integer :: int_err(5)
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real(kind(1.d0)) :: real_err(5)
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character(len=20) :: name, ch_err
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info = 0
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err = 0
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int_err(1)=0
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name = 'psb_dsprn'
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call psb_erractionsave(err_act)
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icontxt = desc_a%matrix_data(psb_ctxt_)
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call blacs_gridinfo(icontxt, nprow, npcol, myrow, mycol)
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if (debug) &
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&write(*,*) 'starting spalloc ',icontxt,nprow,npcol,myrow
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! ....verify blacs grid correctness..
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if (npcol.ne.1) then
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info = 2030
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call psb_errpush(info,name)
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goto 9999
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endif
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if (debug) write(*,*) 'got through igamx2d '
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if (.not.psb_is_asb_dec(desc_a%matrix_data(psb_dec_type_))) then
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info=590
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call psb_errpush(info,name)
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goto 9999
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endif
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if (a%infoa(psb_state_) == psb_spmat_asb_) then
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a%aspk(:) = 0.0
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if (ibits(a%infoa(psb_upd_),2,1)==1) then
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if(a%fida(1:3).eq.'JAD') then
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a%ia1(a%infoa(psb_upd_pnt_)+psb_nnz_) = 0
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else
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a%ia2(a%infoa(psb_upd_pnt_)+psb_nnz_) = 0
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endif
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endif
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a%infoa(psb_state_) = psb_spmat_upd_
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else if (a%infoa(psb_state_) == psb_spmat_bld_) then
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! in this case do nothing. this allows sprn to be called
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! right after allocate, with spins doing the right thing.
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! hopefully :-)
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else if (a%infoa(psb_state_) == psb_spmat_upd_) then
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else
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info=591
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call psb_errpush(info,name)
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endif
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if (info /= 0) goto 9999
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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(icontxt)
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return
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end if
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return
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end subroutine psb_dsprn
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