1 << 8 = 1 << 23 = 256 = 1 shifted by 8 bits to left
Division (Right shift >>)
40 >> 1 = 40 >> 20 = 20 = 40 divided by 21
40 >> 2 = 40 >> 21 = 10 = 40 divided by 22
36 >> 2 = 36 >> 21 = 09 = 36 divided by 22
1024 >> 8 = 1024 >> 23 = 4 = 1024 divided by 28
Logical and arithmetic shifts
Arithmetic : Respect the sign bit (>> / <<)
Logical : Do not respect the sign bit (>>> / <<<)
In Java you can explicitly tell which one to use, in Cpp
or Golang
, implementations choose shift to perform depending on the type of integer being shifted.
Signed integers are shifted using the arithmetic shift.
Unsigned integers are shifted using the logical shift.
