GNUmifluz: FAST_HASH

{ \
 u_int32_t __h; \
 u_int8_t *__cp, *__hp; \
 __hp = (u_int8_t *)&__h; \
 __cp = (u_int8_t *)(P); \
 __hp[0] = __cp[0] ^ __cp[4]; \
 __hp[1] = __cp[1] ^ __cp[5]; \
 __hp[2] = __cp[2] ^ __cp[6]; \
 __hp[3] = __cp[3] ^ __cp[7]; \
 return (__h); \
}