bitshift

Shift the bits of an integer left or right.

Syntax

B = bitshift(A, k)
B = bitshift(A, k, type)

Description

Shifts each element of A by k bits — left if k is positive, right if k is negative. Right shifts on signed types replicate the sign bit (arithmetic shift); right shifts on unsigned types fill with zeros (logical shift).

The optional type string controls how A is interpreted (defaults to int64). Bits shifted past the integer’s width are discarded.

Examples

bitshift(1, 4)           % 16  (1 << 4)
bitshift(1024, -3)       % 128 (1024 >> 3)
bitshift(uint8(255), 1)  % 254 (overflow drops high bit)

See also

• bitset — Set or clear a specific bit of an integer value.
• bitget — Read a specific bit of an integer value.