nx_nofloat_mxfp8_gate.nx

nx_nofloat_mxfp8_gate.nx -- gate: MXFP8 (OCP E4M3 + E5M2) dequant to Q16, EXACT known values. T1 E4M3 normals decode to exact Q16 (1.0, 1.5, 2.0, 0.5, -1.0) T2 E4M3 subnormal (2^-7) + NaN (E=1111,M=111) -> 0 T3 E5M2 normals decode to exact Q16 (1.0, 1.25, 0.5) T4 E5M2 subnormal (2^-16) + inf (E=11111,M=0) -> 0 T5 E8M0 shared block scale: same element, scale 2^+1 doubles, 2^-1 halves T6 block decode: 32-element E4M3 block all decode + bit-identical on a second pass (deterministic) license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0