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