Pure fixed-point math functions

Required Skills: C++

Difficulty: Easy

We should add additional math operations to our fixed-point implementation, so that all calculations can be done purely deterministic. The fpm library already has these operations and could be used as an inspiration.

Important here: These operations must not use any floating point arithmetic for the calculation. They must receive fixed-point values as input and must also return a fixed-point value. This means std library calculations should not be used for solving this issue.

Interesting for us:

• sqrt
• min
• max
• abs
• hypot
• atan2

Nice to have:

• sin
• cos
• tan
• pow
• log

Further Reading

• openage fixed-point implementation
• fpm library documentation