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-rw-r--r--compat/nan.hpp11
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diff --git a/compat/nan.hpp b/compat/nan.hpp
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+#pragma once
+
+#include "export.hpp"
+
+#if defined(__GNUC__)
+extern "C" OPENTRACK_COMPAT_EXPORT bool __attribute__ ((noinline)) nanp(double value);
+#elif defined(_WIN32)
+extern "C" OPENTRACK_COMPAT_EXPORT __declspec(noinline) bool nanp(double value);
+#else
+extern "C" OPENTRACK_COMPAT_EXPORT bool nanp(double value);
+#endif