Is there any functions for calculating a vectors magnitude and angle in this library?

I tried using polar() but the results are not what I expected. The following code prints 0.7375122532248497, but it should be 1.41... :

extern crate fpa;

use fpa::I3F29;

fn main() {
    let x = I3F29(1_i32).unwrap();
    let y = I3F29(1_i32).unwrap();
    let (a, _) = x.polar(y);
    println!("{}", a);
}

I've also tried different values, but I never get a value that would be the magnitude of the vector.

Thanks for this library!

Any plans to support trigonometry (sin,cos,tan,asin,acos,atan) and other common math functions?
Something like libfixmath

As a vectoring-mode cordic is already implemented, a rotation-mode cordic should be easy to do and compute sin/cos....

Hi @japaric, from looking through the code it appears there aren't any 64 bit representations. Is that true, or am I reading it wrong? There's a lot of macro magic going on so maybe I'm missing it.

I'm looking for a fixed point implementation for a game physics engine I'm working on, and of the several options fpa appears to be the only one with any built-in trig support.

I use this in many places in my programs. You could also add all the way up to I0F64 - I64F0 once u128 and i128 are stabilized in the coming months