allow compiler >=0.8.0

[Mathacc]

This PR updates the computation of the largest power of two divisor of the denominator in the mulDiv function. It replaces:

uint256 twos = -denominator & denominator;

with

uint256 twos = denominator & (~denominator + 1);

The new expression is equivalent to the original but uses an explicit two's complement computation, improving code clarity and readability.

All tests pass, and the change does not alter the functionality of the code.
Also allows the compilation for compilers above 0.8.0

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[Mathacc]

yes, it is relevant still, when I compile from a compiler >8.0.0 I always have to change it locally

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.