Shifting left by n bits on a signed or unsigned binary number has the effect of multiplying it by 2^n. Shifting right by n bits on a two's complement signed binary number has the effect of dividing it by 2^n, but it always rounds down (towards negative infinity).
Shifting left by n bits on a signed or unsigned binary number has the effect of multiplying it by 2^n. Shifting right by n bits on a two's complement signed binary number has the effect of dividing it by 2^n, but it always rounds down (towards negative infinity).