Question

求把这段C语言的CRC16校验代码转换成C#代码

int CRC16( char *p, int len )
{
unsigned char l, h, t;
int i;
l=h=0xff;
for( i=0; i<len; i++ )
{
h^=p[i];
h^=h>>4;
t=h;
h=l;
l=t;
t=(l<<4) | (l>>4);
h^=((t<<2) | (t>>6)) & 0x1f;
h^=t&0xf0;
l^=((t<<1) | (t>>7)) & 0xe0;
}
i = ((int)h<<8) | l;
return i;
｝
input：2200000C20140730111000000038465E4DA6F447D4992B0ABDD343CC110C02000105000703102015073000000000

output：E337

Answer 1

static void Main(string[] args)
        {
            int i = CRC16("2200000C20140730111000000038465E4DA6F447D4992B0ABDD343CC110C02000105000703102015073000000000", "2200000C20140730111000000038465E4DA6F447D4992B0ABDD343CC110C02000105000703102015073000000000".Length);
            Console.Write(i.ToString("x"));
            Console.Read();
        }

        static int CRC16(string p, int len)
        {
            int l, h, t;
            int i;
            l = h = 0xff;
            for (i = 0; i < len; i++)
            {
                h ^= p[i];
                h ^= h >> 4;
                t = h;
                h = l;
                l = t;
                t = (l << 4) | (l >> 4);
                h ^= ((t << 2) | (t >> 6)) & 0x1f;
                h ^= t & 0xf0;
                l ^= ((t << 1) | (t >> 7)) & 0xe0;
            }
            i = ((int)h << 8) | l;
            return i;
        }