| s2i(sho) = i * 256 + j, j < 0, i ≤ 0, ~256 < j, s2i(sho) < 0, ~65536 ≤ s2i(sho), 0 ≤ (65536 + s2i(sho)) / 256 ⊦ 255 + i % 256 = ((65536 + s2i(sho)) / 256) % 256, j = 0 |
j < 0, i ≤ 0, ~256 < j, i * 256 + j < 0, ~65536 ≤ i * 256 + j, 0 ≤ (65536 + i * 256 + j) / 256 ⊦ 255 + i % 256 = ((65536 + i * 256 + j) / 256) % 256, j = 0