gistfile1.txt

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    // c++
    #define FNV_32_PRIME ((unsigned int)0x01000193)
    #define FNV_32_INIT ((unsigned int )2166136261)
    #define FNV_MASK_8 (((unsigned int)1<<8)-1)

    uint fnv_32_a_buf(void* buf, uint len)
    {
        uint hval = (uint)FNV_32_INIT;
        byte* bp = (byte*)buf;
        byte* be = bp + len;
        while (bp < be)
        {
            hval ^= (uint)*bp++;
            hval *= FNV_32_PRIME;
        }
        return hval;
    }

    // C#
    private const uint FNV_32_PRIME = 0x01000193;
    private const ulong FNV_32_INIT = 0x2166136261;
    private const uint FNV_MASK_8 = (1 << 8) - 1;
	
    internal static uint fnv_32_a_buf(byte[] buffer, uint len)
    {
        var hval = FNV_32_INIT;
        for (var i = 0; i < len;)
        {
            hval ^= buffer[i++];
            hval *= FNV_32_PRIME;
        }
        return (uint)hval;
    }
...