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psblas3/base/internals/psi_list_search.f90

59 lines
2.2 KiB
Fortran

!
! Parallel Sparse BLAS version 3.5
! (C) Copyright 2006, 2010, 2015, 2017
! Salvatore Filippone
! Alfredo Buttari CNRS-IRIT, Toulouse
!
! 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.
!
!
integer function psi_list_search(list,lenght_list,elem)
use psb_const_mod
implicit none
!returns position of elem in a array list
!of lenght lenght_list, if this element does not exist
!returns -1
integer(psb_ipk_) :: list(*)
integer(psb_ipk_) :: lenght_list
integer(psb_ipk_) :: elem
integer(psb_ipk_) :: i
i=1
do while ((i.le.lenght_list).and.(list(i).ne.elem))
i=i+1
enddo
if (i.le.lenght_list) then
if (list(i).eq.elem) then
psi_list_search=i
else
psi_list_search=-1
endif
else
psi_list_search=-1
endif
end function psi_list_search