#include <intrin.h>
DWORD fn(char* pbuf, int len)
{
	DWORD result = 0;
	if(len >= 8)
	{
		for(int i = 0; i < len; i++)
		{
			result = _lrotl(((((~(_lrotl(result, 3) + pbuf[i])) ^ 0x20141001) + 0x20141007) * 0xCEBEA6DA), 7);
		}
		result = ~result;

		result = ~_lrotl(result, 5);
		result ^= 0x15;
		result ^= 0x41;
		result += 0x83;
		result = ~result;
		result += 0x31;

		result = ~_lrotl(result, 5);
		result ^= 0x30;
		result ^= 0x42;
		result += 0x97;
		result = ~result;
		result += 0x32;

		result = ~_lrotl(result, 5);
		result ^= 0x26;
		result ^= 0x43;
		result += 0xA9;
		result = ~result;
		result += 0x33;

		result = ~_lrotl(result, 5);
		result ^= 0x25;
		result ^= 0x44;
		result += 0x99;
		result = ~result;
		result += 0x34;

		result = ~_lrotl(result, 5);
		result ^= 0x21;
		result ^= 0x45;
		result += 0xA7;
		result = ~result;
		result += 0x35;

		result = ~_lrotl(result, 5);
		result ^= 0x15;
		result ^= 0x46;
		result += 0xA9;
		result = ~result;
		result += 0x36;

		result = ~_lrotl(result, 5);
		result ^= 0x33;
		result ^= 0x47;
		result += 0x9C;
		result = ~result;
		result += 0x37;

		result = ~_lrotl(result, 5);
		result ^= 0x27;
		result ^= 0x48;
		result += 0x85;
		result = ~result;
		result += 0x38;

		result = ~_lrotl(result, 5);
		result ^= 0x27;
		result ^= 0x49;
		result += 0x9e;
		result = ~result;
		result += 0x39;

		result = ~_lrotl(result, 5);
		result ^= 0x2f;
		result ^= 0x4a;
		result += 0x5b;
		result = ~result;
		result += 0x3a;

		result ^= 0x19810304;
	}
	return result;
}

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