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-rw-r--r--ruby/src/IceRuby/Types.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/ruby/src/IceRuby/Types.cpp b/ruby/src/IceRuby/Types.cpp
index 228a202a349..2168e9daaf8 100644
--- a/ruby/src/IceRuby/Types.cpp
+++ b/ruby/src/IceRuby/Types.cpp
@@ -17,6 +17,7 @@
#include <Ice/SlicedData.h>
#include <list>
#include <limits>
+#include <math.h>
//
// Required for RHASH_SIZE to work properly with Ruby 1.8.x.