Битовые операции


-- Начиная с Lua 5.2 в состав стандартной библиотеки входит bit32

bit.tobit(x)          -- normalize number to the numeric range of
                      -- bit operations (all bit ops use this implicitly)
bit.tohex(x[,n])      -- convert x to hex with n digits (default 8)
bit.bnot(x)           -- bitwise not of x
bit.band(x1[,x2...])  -- bitwise and of x1, x2, ...
bit.bor(x1[,x2...])   -- bitwise or of x1, x2, ...
bit.bxor(x1[,x2...])  -- bitwise xor of x1, x2, ...
bit.lshift(x, n)      -- left-shift of x by n bits
bit.rshift(x, n)      -- logical right-shift of x by n bits
bit.arshift(x, n)     -- arithmetic right-shift of x by n bits
bit.rol(x, n)         -- left-rotate of x by n bits
bit.ror(x, n)         -- right-rotate of x by n bits
bit.bswap(x)          -- byte-swap of x (little-endian <-> big-endian)