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diff --git a/lib/libc/arm/arith.h b/lib/libc/arm/arith.h
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+/*
+ * MD header for contrib/gdtoa
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * NOTE: The definitions in this file must be correct or strtod(3) and
+ * floating point formats in printf(3) will break! The file can be
+ * generated by running contrib/gdtoa/arithchk.c on the target
+ * architecture. See contrib/gdtoa/gdtoaimp.h for details.
+ */
+
+#if !defined(__ARMEB__) && defined(__VFP_FP__)
+#define IEEE_8087
+#define Arith_Kind_ASL 1
+#define Sudden_Underflow
+#else
+#define IEEE_MC68k
+#define Arith_Kind_ASL 2
+#endif
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