A lightweight C library providing functions to encode and decode data bits using the Hamming(7,4) error correction scheme.

• Encodes 4-bit data blocks into 7-bit Hamming code.
• Decodes and corrects single-bit errors in encoded data.

Warning: The encode function assumes you are passing in bits in multiples of 4.

1. Include the header:

   #include "hamming.h"

2. Encode & Decode data:

   int input_bits[4] = {1,0,1,1};
   int out_bits[7];
   hamming_encode_74(input_bits, sizeof(input_bits), out_bits);
   
   int decoded_bits[4];
   hamming_decode_74(out_bits, sizeof(out_bits), decoded_bits);
   
   /* decoded_bits will be the same as input_bits */
   for (int i = 0; i < 4; i++) {
        assert(input_bits[i] == decoded_bits[i]);
   }

This project is released under the MIT License. Use it freely in your own projects!