(学习笔记)2.2 整数表示(2.2.3 补码编码)对于位向量 x ⃗ = [ x w − 1 , x w − 2 , . . . , x 0 ] \vec{x}=[x_{w−1},x_{w−2},...,x_0] x =[xw−1,xw−2,...,x0],其表示的补码值为: B 2 T w ( x ⃗ ) ≐ − x w − 1 ⋅ 2 w − 1 + i = ∑ i = 0 w − 2 x i ⋅ 2 i B2T_w (\vec{x})\doteq−x_{w−1} \cdot2^{w−1}+i=\sum_{i=0}^{w-2} x_{i} \cdot