/*
split_bytes(n)
--------------
Splits a 32-bit unsigned integer into its four bytes.
Layout (little-endian order):
byte[0] = lowest 8 bits
byte[1] = next 8 bits
byte[2] = next 8 bits
byte[3] = highest 8 bits
Uses bitwise AND and shifts:
n & 0xFF → extract lowest byte
(n >> 8) & 0xFF → extract next byte
...
*/
function split_bytes(n) {
return [
n & 0xFF, // lowest byte
(n >> 8) & 0xFF,
(n >> 16) & 0xFF,
(n >> 24) & 0xFF // highest byte
];
}
/*
print_bits(label, value)
------------------------
Prints an 8-bit or 32-bit value in binary.
Uses value.toString(2) and manual zero-padding.
*/
function print_bits(label, value, bits) {
let binary = value.toString(2);
// Pad with leading zeros
if (binary.length < bits) {
binary = "0".repeat(bits - binary.length) + binary;
}
console.log(`${label} (${bits} bits): ${binary}`);
}
function main() {
const value = 3298312;
const bytes = split_bytes(value);
console.log("Bytes (little-endian order):");
for (let i = 0; i < bytes.length; i++) {
console.log(`byte[${i}]: ${bytes[i]}`);
}
console.log("\nBit representation:");
// Print full 32-bit value
print_bits("Full value", value, 32);
// Print each byte in binary
for (let i = 0; i < bytes.length; i++) {
print_bits(`byte[${i}]`, bytes[i], 8);
}
}
main();
/*
run:
Bytes (little-endian order):
byte[0]: 8
byte[1]: 84
byte[2]: 50
byte[3]: 0
Bit representation:
Full value (32 bits): 00000000001100100101010000001000
byte[0] (8 bits): 00001000
byte[1] (8 bits): 01010100
byte[2] (8 bits): 00110010
byte[3] (8 bits): 00000000
*/
