Shifting operations and bitwise logical operations with binary numbers

Hi friends, Actually i need to do right shifting of a binary numbers.

For Example:

a=200

b=dec2bin(200)

c=str2num(b)

d=bitshift(c,3)

Binary of 200 is 11001000. If i right shift it by 3 i should get 00011001 but d is giving 88008000. Even "bitsll" command is not giving desired results.

In addition to this i also need to work with bitwise logical operators.I tried in different ways using( "and" , "&" , "&&") but nothing is working.

Please suggest me the right way of working with above mentioned operations with binary numbers.

Thanks

Answer 1

[Walter Roberson]

a8 = uint8(200);
d = bitshift(a8, 3);

If you insist on working with dec2bin representation, then

a8 = uint8(200);
b = dec2bin(a8, 8);
d = ['0' '0' '0' b(1:end-3)];

Answer 2

[Yao Li]

a=200
b=bitshift(a,-3)
c=dec2bin(b,8)

Answer 3

[Iman Ansari]

a=200
b=dec2bin(200)
c=shift(b,3)

Answer 4

[srikanth]

Thanks for your help guys. Both 1st and 2nd replies are working