blob: fda313bccc259f144f725439dd235e7166a7c615 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
#include <array>
#include <cstdint>
#include <utility>
#include <cstring>
#include "common/common_types.h"
namespace Common {
#ifdef _MSC_VER
#include <intrin.h>
#pragma intrinsic(_umul128)
#endif
inline u128 umul128(u64 a, u64 b) {
#ifdef _MSC_VER
u128 result;
result[0] = _umul128(a, b, &result[1]);
#else
unsigned __int128 tmp = a;
tmp *= b;
u128 result;
std::memcpy(&result, &tmp, sizeof(u128));
#endif
return result;
}
std::pair<u64, u64> udiv128(u128 dividend, u64 divisor);
} // namespace Common
|
