That looks like an ordinary procedure, not a pointer to one.
interface
subroutine InitWELLRNG44497a(i) bind(c,name='InitWELLRNG44497a')
integer(c_int) :: i
end subroutine InitWELLRNG44497a
end interface
In the absence of value attribute, a pointer to the argument will be constructed automatically, for ABI where it is appropriate (including Intel platforms). inout will be assumed, which seems likely to be appropriate.
