Function PxVec3_normalizeSafe_mut 

pub unsafe extern "C" fn PxVec3_normalizeSafe_mut(
    self_: *mut PxVec3,
) -> f32

normalizes the vector in place. Does nothing if vector magnitude is under PX_NORMALIZATION_EPSILON. Returns vector magnitude if >= PX_NORMALIZATION_EPSILON and 0.0f otherwise.