51 lines
1.7 KiB
Fortran
51 lines
1.7 KiB
Fortran
! { dg-do run }
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! { dg-options "-O2 -ffast-math -mfpmath=387" { target { { i?86-*-* x86_64-*-* } && lp64 } } }
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! { dg-options "-O2 -ffast-math" }
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module scc_m
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implicit none
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integer, parameter :: dp = selected_real_kind(15,90)
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contains
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subroutine self_ind_cir_coil (r, l, turns, mu, self_l)
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implicit none
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real (kind = dp), intent(in) :: r, l, turns, mu
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real (kind = dp), intent(out) :: self_l
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real (kind = dp) :: alpha, modulus, pk, ak, bk, ae, be, elliptice, elliptick
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real (kind = dp) :: expected
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alpha = atan(2.0_dp*r/l)
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modulus = sin(alpha)
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pk = 1.0_dp - modulus**2
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ak = (((0.01451196212_dp*pk+0.03742563713_dp)*pk+ &
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0.03590092383_dp)*pk+0.09666344259_dp)*pk+1.38629436112_dp
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bk = (((0.00441787012_dp*pk+0.03328355346_dp)*pk+ &
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0.06880248576_dp)*pk+0.12498593597_dp)*pk+0.5_dp
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elliptick = ak - bk * log(pk)
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ae = (((0.01736506451_dp*pk+0.04757383546_dp)*pk+ &
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0.0626060122_dp)*pk+0.44325141463_dp)*pk+1.0_dp
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be = (((0.00526449639_dp*pk+0.04069697526_dp)*pk+ &
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0.09200180037_dp)*pk+0.2499836831_dp)*pk
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elliptice = ae - be * log(pk)
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self_l = (mu * turns**2 * l**2 * 2.0_dp * r)/3.0_dp * &
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(((tan(alpha)**2-1.0_dp)*elliptice+elliptick)/sin(alpha) - &
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tan(alpha)**2)
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expected = 3.66008420600434162E-002_dp
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if (abs(self_l - expected) / expected > 1e-3) &
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call abort
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end subroutine self_ind_cir_coil
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end module scc_m
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program test
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use scc_m
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implicit none
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real (kind = dp) :: mu, turns, r, l, self_l
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mu = 1.25663706143591729E-006_dp
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turns = 166666.66666666666_dp
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l = 3.00000000000000006E-003_dp
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r = 2.99999999999999989E-002_dp
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call self_ind_cir_coil (r, l, turns, mu, self_l)
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end program test
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! { dg-final { cleanup-modules "scc_m" } }
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