diff --git a/third_party/llvm-subzero/lib/Support/NativeFormatting.cpp b/third_party/llvm-subzero/lib/Support/NativeFormatting.cpp
index bb86891..88a07bb 100644
--- a/third_party/llvm-subzero/lib/Support/NativeFormatting.cpp
+++ b/third_party/llvm-subzero/lib/Support/NativeFormatting.cpp
@@ -14,6 +14,8 @@
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Format.h"
 
+#include <float.h>
+
 using namespace llvm;
 
 template<typename T, std::size_t N>