!!$ 
!!$              Parallel Sparse BLAS  version 3.1
!!$    (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
!!$                       Salvatore Filippone    University of Rome Tor Vergata
!!$                       Alfredo Buttari        CNRS-IRIT, Toulouse
!!$ 
!!$  Redistribution and use in source and binary forms, with or without
!!$  modification, are permitted provided that the following conditions
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!!$    3. The name of the PSBLAS group or the names of its contributors may
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!!$       software without specific written permission.
!!$ 
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!!$
!
! Function: psb_dasum_s
!    Searches the absolute max of X.
!
!    normi := max(abs(X(i))  
!
! Arguments:
!    n      - integer  size of X
!    x(:)   - real   The input vector.
!
function psb_dasum_s(n, x) result(val)
  use psb_base_mod, psb_protect_name => psb_dasum_s

  implicit none

  integer(psb_ipk_), intent(in)  :: n
  real(psb_dpk_), intent(in)  :: x(:)
  real(psb_dpk_)                 :: val

  integer(psb_ipk_) :: k

  k   = min(n,size(x))
  val = sum(psb_nrm1(x(1:k)))

end function psb_dasum_s