From 60cedca97ba85c230ab3673c46e00ee8106896d0 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Mon, 8 Jul 2019 18:14:03 -0400
Subject: [PATCH] Adds `cmath` in support of `ceilf`.

---
 Outputs/Speaker/Implementation/LowpassSpeaker.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Outputs/Speaker/Implementation/LowpassSpeaker.hpp b/Outputs/Speaker/Implementation/LowpassSpeaker.hpp
index 9cdb752f1..7a8ac79f1 100644
--- a/Outputs/Speaker/Implementation/LowpassSpeaker.hpp
+++ b/Outputs/Speaker/Implementation/LowpassSpeaker.hpp
@@ -17,6 +17,7 @@
 
 #include <mutex>
 #include <cstring>
+#include <cmath>
 
 namespace Outputs {
 namespace Speaker {