bitget function working explanation needed

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I am completely new to matlab. I am really not able to understand bitget.
The sample code given on the matlab website is:
a1 = intmax('int8');
a2 = intmax('uint8');
b1 = bitget(a1,8:-1:1)
This code is giving me output as
b1 =
1×8 int8 row vector
0 1 1 1 1 1 1 1
Even after seeing the output, I am not being able to interpret the working of bitget. It would be great if someone can explain me this.

Accepted Answer

Steven Lord
Steven Lord on 15 Jan 2022
Here's an unsigned 8-bit integer.
x = 0b10011010u8 % x is 10011010
x = uint8 154
The lowest order bit of x is 0. This makes sense since x is even.
bitget(x, 1)
ans = uint8 0
The next three highest order bits (bits 4, 3, and 2) are 1, 0, and 1 respectively.
bitget(x, [4 3 2])
ans = 1×3
1 0 1
Here are all the bits.
bitget(x, 8:-1:1) % x's binary representation is 10011010
ans = 1×8
1 0 0 1 1 0 1 0

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