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-rw-r--r--contrib/btree_gist/btree_utils_num.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/contrib/btree_gist/btree_utils_num.h b/contrib/btree_gist/btree_utils_num.h
index 555410c08f6..1ea022e90f5 100644
--- a/contrib/btree_gist/btree_utils_num.h
+++ b/contrib/btree_gist/btree_utils_num.h
@@ -2,6 +2,7 @@
#define __BTREE_UTILS_NUM_H__
#include <math.h>
+#include <float.h>
#include "btree_gist.h"