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26 lines
327 B
26 lines
327 B
5 years ago
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module parent
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real, parameter :: pi = 4.*atan(1.)
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real :: tau
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interface
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module elemental real function pi2tau(pi)
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real, intent(in) :: pi
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end function pi2tau
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module subroutine good()
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end subroutine good
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end interface
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end module parent
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use parent
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tau = pi2tau(pi)
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print *,'pi=',pi, 'tau=', tau
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call good()
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end program
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