From dc78d8ce73ee35f3828f0aad67a4e53620277ebf Mon Sep 17 00:00:00 2001
From: Ulrich Bauer <ulrich.bauer@tum.de>
Date: Tue, 26 Jul 2016 18:10:15 +0200
Subject: include cmath for std::sqrt

---
 ripser.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ripser.cpp b/ripser.cpp
index 9fa2f3b..18c61c3 100644
--- a/ripser.cpp
+++ b/ripser.cpp
@@ -33,6 +33,7 @@
 #include <fstream>
 #include <cassert>
 #include <queue>
+#include <cmath>
 #include <unordered_map>
 
 #ifdef USE_GOOGLE_HASHMAP
-- 
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