mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-12-02 08:16:24 -05:00
19 lines
578 B
C++
19 lines
578 B
C++
|
|
||
|
|
namespace Common {
|
||
|
|
|
||
|
|
std::pair<u64, u64> udiv128(u128 dividend, u64 divisor) {
|
||
|
|
u64 remainder = dividend[0] % divisor;
|
||
|
|
u64 accum = dividend[0] / divisor;
|
||
|
|
if (dividend[1] == 0)
|
||
|
|
return {accum, remainder};
|
||
|
|
// We ignore dividend[1] / divisor as that overflows
|
||
|
|
u64 first_segment = (dividend[1] % divisor) << 32;
|
||
|
|
accum += (first_segment / divisor) << 32;
|
||
|
|
u64 second_segment = (first_segment % divisor) << 32;
|
||
|
|
accum += (second_segment / divisor);
|
||
|
|
remainder += second_segment % divisor;
|
||
|
|
return {accum, remainder};
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace Common
|