In this paper, we realized Barrel Shifter of 32 bits by using transpost gates, its functions including arithmeticshift right, logic shift left, logic shift right and rotate right.
利用传输门实现了32位桶式移位寄存器，其具体功能包括算术右移，逻辑左移，逻辑右移和循环右移。
2
Performs an arithmeticleftshift on a bit pattern.
对位模式执行数学左移位。
3
In an arithmetic right shift, the bits shifted beyond the rightmost bit position are discarded, and the leftmost bit is propagated into the bit positions vacated at the left.