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module circle
implicit none
integer :: x
real :: radius
interface default
module procedure timestwo
end interface
contains
elemental integer function timestwo(x) result(y)
integer, intent(in) :: x
y = 2*x
end function
end module circle
program prog
use, non_intrinsic :: circle, only: timestwo, x
implicit none
x = 3
if (timestwo(x) /= 6) error stop 'fortran module procedure problem'
print *,'OK: Fortran module procedure'
end program prog
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