. exact ulp_dvd_ulp n tsub_le_self
x n : ℕ
xpos : 0 < x
hfx : trunc n x = x
⊢ ulp n (x - 1) ∣ ulp n x

x n : ℕ
xpos : 0 < x
hfx : trunc n x = x
⊢ ulp n x ∣ x
x n : ℕ
xpos : 0 < x
hfx : trunc n x = x
⊢ ulp n x ∣ x