include <cmath> in src/changes.C for std::abs(double)

[lyx.git] / src / changes.C

diff --git a/src/changes.C b/src/changes.C
index 133c5b76aaf77b7f5897062fdef22e0d89b41ce7..53d89e494e70c7e5d3256d8e483ef388a67b646d 100644 (file)
--- a/src/changes.C
+++ b/src/changes.C
@@ -16,6 +16,7 @@
 #include "changes.h"
 #include "debug.h"
 
+#include <cmath>
 #include <boost/assert.hpp>