matlab位运算函数

matlab位运算函数列表入下

函数	目的/作用
bitand(a, b)	Bit-wise AND of integers a and b
bitcmp(a)	Bit-wise complement of a
bitget(a,pos)	Get bit at specified position pos, in the integer array a
bitor(a, b)	Bit-wise OR of integers a and b
bitset(a, pos)	Set bit at specific location pos of a
bitshift(a, k)	Returns a shifted to the left by k bits, equivalent to multiplying by 2k. Negative values of k correspond to shifting bits right or dividing by 2|k| and rounding to the nearest integer towards negative infinite. Any overflow bits are truncated.
bitxor(a, b)	Bit-wise XOR of integers a and b
swapbytes	Swap byte ordering

例子，

1. &按位与运算    bitand

takemsg4 = bitand( msg, 240) ;

2. ｜按位或运算   bitor

cover1( i, j) = bitor( cover1( i, j) , shiftmsg4( i, j) ) ;

3. 移位     bitshift

shiftmsg4 = bitshift( takemsg4, - 4) ;