41 lines
728 B
Fortran
41 lines
728 B
Fortran
! { dg-do run }
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! { dg-options "-fcheck=recursion" }
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!
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! PR fortran/39577
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!
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! Recursive but valid program
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! Contributed by Dominique Dhumieres
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!
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recursive function fac(i) result (res)
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integer :: i, j, k, res
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k = 1
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goto 100
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entry bifac(i,j) result (res)
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k = j
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100 continue
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if (i < k) then
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res = 1
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else
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res = i * bifac(i-k,k)
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end if
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end function
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program test
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interface
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recursive function fac(n) result (res)
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integer :: res
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integer :: n
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end function fac
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recursive function bifac(m,n) result (res)
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integer :: m, n, res
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end function bifac
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end interface
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print *, fac(5)
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print *, bifac(5,2)
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print*, fac(6)
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print *, bifac(6,2)
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print*, fac(0)
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print *, bifac(1,2)
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end program test
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