uint result = rol64(thing[1] * 5, 7) * 9;
uint t = thing[1] << 17;
thing[2] ^= thing[0];
thing[3] ^= thing[1];
thing[1] ^= thing[2];
thing[0] ^= thing[3];

thing[2] ^= t;
thing[3] = rol64(thing[3], 45);
return result;

static uint rol64(uint x, int k)
{
return (x << k) | (x >> (64 - k));
}
graicas c# por bajar mi sanidad