swap

Swaps bit sequences. 🏃 📼 📦 🌔 📒

bit.swap(x, i, j, [n]);
// x: an int32
// i: first bit index
// j: second bit index
// n: bit width (1)

const bit = require('extra-bit');

bit.swap(6, 1, 0);
// 5 (110 => 101)

bit.swap(0x1234, 8, 4, 4);
// 4900 (0x1234 => 0x1324)

bit.swap(0x4AAB, 8, 0, 8);
// 43850 (0x4AAB => 0xAB4A)

references

• XOR method: Bit Twiddling Hacks