Fix for incorrect display on gyro for negative degrees

[rlee287]

This PR fixes #372 by implementing a getWrappedValue function.

Pinging @SamCarlberg since he wrote the original gyro code.

[frcjenkins]

Can one of the admins verify this patch?

[SamCarlberg]

Huh, I thought I had fixed that at one point.

Regardless, I think would be better logic. No loops.

if (value < 0) {
  return (360 + value) % 360;
} else {
  return value % 360;
}

And there's no need to cache value, since the GyroData (and all other data classes) are immutable

[rlee287]

The if statement does not properly handle cases when the angle is less than -360 degrees (TIO link). I have committed an alternate if statement that avoids loops but properly handles these cases (TIO link).

[SamCarlberg]

Ah, my math was off a bit. Should be

if (value < 0) {
  return ((value % 360) + 360) % 360;
} else {
  return value % 360;
}

[rlee287]

I pushed up an adjusted if statement as you suggested and believe that this is now ready to merge in.

[SamCarlberg]

Thanks for submitting this fix!