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subroutine foo ( uplo, ap, y ) character*1 uplo complex(kind((1.0d0,1.0d0))) ap( * ), y( * ) if ( .not. scan( uplo, 'uu' )>0.and. & .not. scan( uplo, 'll' )>0 )then do 60, j = 1, n y( j ) = y( j ) + dble( ap( kk ) ) kk = kk + j 60 continue end if end