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-rw-r--r--libstdc++-v3/src/compatibility-ldbl.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/libstdc++-v3/src/compatibility-ldbl.cc b/libstdc++-v3/src/compatibility-ldbl.cc
index b3db735..9658751 100644
--- a/libstdc++-v3/src/compatibility-ldbl.cc
+++ b/libstdc++-v3/src/compatibility-ldbl.cc
@@ -24,6 +24,7 @@
// <http://www.gnu.org/licenses/>.
#include <locale>
+#include <cmath>
#include <tr1/functional>
#ifdef _GLIBCXX_LONG_DOUBLE_COMPAT