Flip the extra-parity checks in the double-bit code checking code again; it appears...

[hamming] / hamming32.c

diff --git a/hamming32.c b/hamming32.c
index 9547a28d6687201e2f0bc47aeadace8f59b41edd..a27725318e5fab6893bcb653dd89c9162afb2abc 100644 (file)
--- a/hamming32.c
+++ b/hamming32.c
@@ -34,9 +34,9 @@ unsigned generate_parity(unsigned data)
        unsigned parity3 = find_parity_32(data & 0x01c78f0f);
        unsigned parity4 = find_parity_32(data & 0x003f80ff);
        unsigned parity5 = find_parity_32(data & 0x00007fff);
-       unsigned parity6 = find_parity_32(data);
+       unsigned parity6 = find_parity_32(data & 0x03b4e996);
                
-       return parity6 | (parity5 << 1) | (parity4 << 2) | (parity3 << 3) | (parity4 << 4) | (parity5 << 5);
+       return parity6 | (parity5 << 1) | (parity4 << 2) | (parity3 << 3) | (parity2 << 4) | (parity1 << 5);
 }
 
 unsigned make_codeword(unsigned data)