mat_wasum Function

doubleprecision function mat_wasum(n,xr,xi,incx)
integer         :: n
doubleprecision :: xr(*)
doubleprecision :: xi(*)
integer         :: incx
doubleprecision :: s
integer         :: ix
integer         :: i

   !     norm1(x)
   s = 0.0d0
   if (n .gt. 0) then
      ix = 1
      do i = 1, n
         s = mat_flop(s + dabs(xr(ix)) + dabs(xi(ix)))
         ix = ix + incx
      enddo
   endif
   mat_wasum = s
end function mat_wasum