diff --git a/src/function/evaluate.rs b/src/function/evaluate.rs
index 1c5b6bdd..5fe6e0a9 100644
--- a/src/function/evaluate.rs
+++ b/src/function/evaluate.rs
@@ -11,16 +11,10 @@
 ///
 /// Returns 0 for a 0 length coefficient slice
 pub fn polynomial(z: f64, coeff: &[f64]) -> f64 {
-    let n = coeff.len();
-    if n == 0 {
-        return 0.0;
-    }
-
-    let mut sum = *coeff.last().unwrap();
-    for c in coeff[0..n - 1].iter().rev() {
-        sum = *c + z * sum;
-    }
-    sum
+    coeff
+        .into_iter()
+        .rev()
+        .fold(0_f64, |acc, val| acc * z + val)
 }
 
 #[rustfmt::skip]