pub fn act_quant_inplace(x: &mut [f32])Expand description
act_quant(x, 32, "ue8m0", e8m0, inplace=True): per block of FP8_BLOCK, scale = the
power-of-two ceiling of amax / 448 (amax floored at 1e-4), values to e4m3 (RNE, clamped),
then dequantised and stored back as bf16.