Fix precision issue in day 6

timvisee · Dec 7, 2023 · 60035d8 · 60035d8
1 parent 5cb657e
commit 60035d8
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/day06a/src/main.rs b/day06a/src/main.rs
@@ -14,7 +14,7 @@ pub fn main() {
             )
             .map(|(t, d)| {
                 // Modified quadratic formula: <https://en.wikipedia.org/wiki/Quadratic_formula>
-                let a = (t - f32::sqrt((t * t - 4 * d) as f32) as usize) / 2;
+                let a = (t - f64::sqrt((t * t - 4 * d) as f64) as usize) / 2;
                 let b = t - a;
                 b - (b * (t - b) <= d) as usize - a - (a * (t - a) <= d) as usize + 1
             })

diff --git a/day06b/src/main.rs b/day06b/src/main.rs
@@ -19,7 +19,7 @@ pub fn main() {
     .unwrap();
 
     // Modified quadratic formula: <https://en.wikipedia.org/wiki/Quadratic_formula>
-    let a = (time - f32::sqrt((time * time - 4 * dist) as f32) as usize) / 2;
+    let a = (time - f64::sqrt((time * time - 4 * dist) as f64) as usize) / 2;
     let b = time - a;
     println!(
         "{}",