Fixed point math constants

[heinezen]

Required Skills: C++

Difficulty: Easy

It would be nice to have common math constants like pi defined using our fixed-point implementation, so that they can be used in fixed-point calculations with deterministic outcome. Floating point constants are already implemented here.

Tasks:

• [ ] Define existing math constants also as fixed point

Further Reading

• openage math constants
• fpm libary math constants

[AyiStar]

@heinezen I opened a WIP PR for adding two fixed point constants, and would be happy to discuss about the implementation and add more constants if everything is ok.

[heinezen]

@AyiStar I've looked at it yesterday and have no complaints so far :)

[AyiStar]

@heinezen Added the rest of the constants in the fixed PR.