uint64_t _wymum(uint64_t A, uint64_t B){ __uint128_t r = A ; r *= B; return (r>>64)^r; }
Do i need ASM or is there a easy way to implement it ?
uint64_t _wymum(uint64_t A, uint64_t B){ __uint128_t r = A ; r *= B; return (r>>64)^r; }
Do i need ASM or is there a easy way to implement it ?