void atoi128(const char* s, number &numlo, number &numhi)
{
numlo = 0;
numhi = 0;
for (;;)
{
const unsigned char d = static_cast<unsigned char>(*(s++) - '0');
if (d > 9)
{
break;
}
number k[2];
k[0] = _umul128(numlo, 10, &k[1]);
k[1] += numhi * 10;
add128(k[0], k[1], d, 0, k, k + 1);
numlo = k[0];
numhi = k[1];
}
}
static inline unsigned long long umulhi(unsigned long long x, unsigned long long y)
{
unsigned __int64 res;
_umul128(x, y, &res);
return res;
}