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module submodule_26_mod
implicit none
private
public :: grid
interface
module function grid(x) result(y)
real(8), intent(in) :: x(:)
real(8) :: y(size(x))
end function
end interface
contains
pure function helper(x) result(y)
real(8), intent(in) :: x(:)
real(8) :: y(size(x))
y = x * 2d0
end function
end module submodule_26_mod
submodule(submodule_26_mod) submodule_26_sub
implicit none
contains
module procedure grid
y = helper(x)
end procedure
end submodule submodule_26_sub
program submodule_26
use submodule_26_mod, only: grid
implicit none
real(8) :: x(3)
real(8) :: y(3)
x = [1d0, 2d0, 3d0]
y = grid(x)
if (any(y /= [2d0, 4d0, 6d0])) error stop
print *, "ok"
end program submodule_26
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