remove unnecessary mut

2017-05-09 19:06:42 +08:00 · 2017-05-09 19:06:42 +08:00 · c7f4dba53a
parent e4f513d444
commit c7f4dba53a
1 changed files with 1 additions and 1 deletions
--- a/firmware/src/pid.rs
+++ b/firmware/src/pid.rs
@ -63,7 +63,7 @@ impl Controller {
    }

    #[allow(dead_code)]
-    pub fn is_within(&mut self, tolerance: f32) -> bool {
+    pub fn is_within(&self, tolerance: f32) -> bool {
        match self.last_input {
            None => false,
            Some(last_input) => (last_input - self.target).abs() < tolerance