nx_torque_test.nx

nx_torque_test.nx -- torque vector ops + cross-primitive composition demo with nx_force. Closed-form invariants (Q14 N·m unless noted): (a) Zero torque magnitude = 0. (b) Unit +Z torque magnitude = Q14. (c) (3, 4, 0) Q14 N·m -> magnitude 5 Q14 (3-4-5). (d) Add: (1, 2, 3) + (4, 5, 6) = (5, 7, 9). (e) τ = r × F demo: r = (1, 0, 0) m, F = (0, 1, 0) N → τ = +Z 1 N·m (right-hand rule). (f) τ = r × F: r = (0, 2, 0) m, F = (3, 0, 0) N → τ = (0*0 - 0*0, 0*3 - 0*0, 2*0 - 0*3 - oh wait Let me recompute by formula: τ_x = r_y*F_z - r_z*F_y = 2*0 - 0*0 = 0 τ_y = r_z*F_x - r_x*F_z = 0*3 - 0*0 = 0 τ_z = r_x*F_y - r_y*F_x = 0*0 - 2*3 = -6 → (0, 0, -6) Q14 N·m (g) τ from r=0, F=anything → zero torque (no lever arm). (h) Verdict name lookup non-NULL for every verdict. expect_exit: 0 license_tier: ORIGINAL