Mathx

A mathematics library that is compatible with no_std, to be used with embedded systems. Giving back some functionality lost when removing the standard library.

Structures that are fully usable and stable:

• Math (Used for no_std to compensate for missing features)
• Vectors (Vector2, Vector3)
• Quaternions (Quaternion)
• Rays (Ray2, Ray3)

Full Documentation: https://docs.rs/mathx

Note: This library is still a work in progress.

Math (struct)

This struct is more of a "static" struct where it contains all the math functions that are included with the standard library plus a little more. It basically uses the default implementation and switches to an approximation when using the no_std feature so the functionality will still be there regardless. Below is an example of how it can be substituted:

let x = 1.0_f32;

// This will cause a compilation error if using #![no_std]
println!("X: {}", x.cos());

// Use the version inside Math as it will work if you're using #![no_std] or not
println!("X: {}", Math::cos(x));

Full Documentation for this struct: https://docs.rs/mathx/latest/mathx/struct.Math.html

Use with no_std Environment

This library is friendly with a no_std environment, although it is an opt-in feature you need to set to make it compatible with a no_std environment. With the standard library, the f32 type holds math functionality such as cos, log, powf, etc. But without the standard library those math functions no longer exist. By default, this library tries to use those math functions as they are expected to be much faster and more accurate than this implementation. Add the no_std feature to have the library switch to an approximation of those math functions that tries to balance accuracy with performance intended for embedded systems, giving back that functionality. It avoids using any lookup tables, as spacial complexity could be a potential concern.