nx_force_test.nx

nx_force_test.nx -- 3D force vector ops verified against hand- computed physics reference cases. Closed-form invariants (Q14 N throughout): (a) Zero force: magnitude == 0. (b) Unit +X force: (Q14, 0, 0) magnitude == Q14. (c) (3, 4, 0) Q14 Newtons magnitude == 5 Q14 (3-4-5 triangle). (d) Gravity on 1 kg: (0, 0, -9.80665 N) ≈ (0, 0, -160665 Q14). (e) Gravity on 2 kg: 2x the above magnitude. (f) Vector add: (1, 2, 3) + (4, 5, 6) = (5, 7, 9). (g) Vector sub: (5, 7, 9) - (4, 5, 6) = (1, 2, 3). (h) Scale by 2.0 (32768 Q14): doubles each component. (i) Dot product (1, 0, 0)·(0, 1, 0) = 0 (perpendicular). (j) Dot product (1, 2, 3)·(1, 2, 3) = 1 + 4 + 9 = 14 N² → 14 Q14 (each side has Q14 N; product is Q14 N², ratio Q14). (k) Cross product +X × +Y = +Z (right-hand rule). (l) Verdict name lookup non-NULL for every verdict. expect_exit: 0 license_tier: ORIGINAL