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! { dg-options "-ffast-math -O2 -fgraphite-identity" }

module mcc_m

  integer, parameter, private :: longreal = selected_real_kind(15,90)

contains

  subroutine mutual_ind_cir_cir_coils (m, l12)

    real (kind = longreal), intent(out) :: l12

    real (kind = longreal), dimension(1:9), save :: zw

    gauss:do i = 1, 9

       theta_l12 = 0.0_longreal

       theta1:   do n1 = 1, 2*m

          theta_1 = pi*real(n1,longreal)/real(m,longreal)

          theta2:       do n2 = 1, 2*m

             numerator = -sin(theta_1)*tvx + cos(theta_1)*tvy

             theta_l12 = theta_l12 + numerator/denominator

          end do theta2

       end do theta1

       l12 = l12 + zw(i)*theta_l12

    end do gauss

    l12 = coefficient * l12

  end subroutine mutual_ind_cir_cir_coils

end module mcc_m