C++ (Cpp) _umul128 Examples

Example #1

File: Definitions.cpp Project: SChernykh/Amicable

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];
	}
}

Example #2

File: expressionparser.cpp Project: V10git/x64dbg

static inline unsigned long long umulhi(unsigned long long x, unsigned long long y)
{
    unsigned __int64 res;
    _umul128(x, y, &res);
    return res;
}