bitget function

I use bitset function to replace LSB by another bit in array

but when extract this LSB by bitget function

the result = null

for example

a = [0 1 0 1];
b = [5 3 8];
c= bitset(b,1,a);

until this no problem

after that in decoding

d = bitget(b,1);

but result of d =[0 0 0 0];

not [0 1 0 1]

so, i need know what the problem in function 'bitget'

Answer 1

[Walter Roberson]

bitget(b,1) is going to be the same length of b. As b is of length 3, you should not be expecting to get a vector of length 4 as the result.

Your bitset() will also fail because you are trying to set bits for 4 elements out of the 3 element vector b.

[Aseel H]

this is my mistake

but this give me the same error if we conider b= [5 3 8 4];

for example

also the result of d is [0 0 0 0]

plz help me how i can extract bits by bitget function

[Walter Roberson]

Are you sure?

>> b= [5 3 8 4]

b =

5 3 8 4

>> bitget(b,1)

ans =

1 1 0 0

Notice that you stored the result of the bitset() in to "c", but you then try to get those bits back from "b".

>> bitget(bitset([5 3 8 4],1,[0 1 0 1]),1)

ans =

0 1 0 1

[Aseel H]

I run your code it true but my code don't work

so, can I send my file for you