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71 lines
2.9 KiB
Fortran
71 lines
2.9 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006, 2010, 2015, 2017
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! Salvatore Filippone Cranfield University
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! Alfredo Buttari CNRS-IRIT, Toulouse
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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subroutine psb_sprecinit(p,ptype,info)
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use psb_base_mod
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use psb_s_prec_type, psb_protect_name => psb_sprecinit
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use psb_s_nullprec, only : psb_s_null_prec_type
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use psb_s_diagprec, only : psb_s_diag_prec_type
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use psb_s_bjacprec, only : psb_s_bjac_prec_type
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implicit none
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class(psb_sprec_type), intent(inout) :: p
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character(len=*), intent(in) :: ptype
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integer(psb_ipk_), intent(out) :: info
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info = psb_success_
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if (allocated(p%prec) ) then
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call p%prec%free(info)
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if (info == psb_success_) deallocate(p%prec,stat=info)
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if (info /= psb_success_) return
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end if
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select case(psb_toupper(ptype(1:len_trim(ptype))))
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case ('NONE','NOPREC')
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allocate(psb_s_null_prec_type :: p%prec, stat=info)
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case ('DIAG')
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allocate(psb_s_diag_prec_type :: p%prec, stat=info)
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case ('BJAC')
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allocate(psb_s_bjac_prec_type :: p%prec, stat=info)
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case default
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write(psb_err_unit,*) 'Unknown preconditioner type request "',ptype,'"'
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info = psb_err_pivot_too_small_
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end select
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if (info == psb_success_) call p%prec%precinit(info)
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end subroutine psb_sprecinit
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