From f4d90e3e6cd76c148a707ec1d3ebcef980dbcb9a Mon Sep 17 00:00:00 2001
From: William Emfinger <waemfinger@gmail.com>
Date: Wed, 15 Jul 2026 10:50:53 -0500
Subject: [PATCH] fix(math): fix missing include in fast math; update
 piecewise-linear to use .empty for clarity

---
 components/math/include/fast_math.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/components/math/include/fast_math.hpp b/components/math/include/fast_math.hpp
index b4d3f2569..005cb487d 100644
--- a/components/math/include/fast_math.hpp
+++ b/components/math/include/fast_math.hpp
@@ -5,8 +5,8 @@
 #include <cstdint>
 #include <cstdlib>
 #include <cstring>
+#include <span>
 #include <utility>
-#include <vector>
 
 namespace espp {
 /**
@@ -102,7 +102,7 @@ template <typename T> int sgn(T x) { return (T(0) < x) - (x < T(0)); }
  */
 [[maybe_unused]] static float piecewise_linear(std::span<const std::pair<float, float>> points,
                                                float x) {
-  if (points.size() == 0) {
+  if (points.empty()) {
     return 0.0f;
   }
   if (x <= points.front().first) {