diff --git a/lib/libm/i387/errno.h b/lib/libm/i387/errno.h
new file mode 100644
index 000000000000..0a4a07beae27
--- /dev/null
+++ b/lib/libm/i387/errno.h
@@ -0,0 +1,3 @@
+#define EDOM	$33
+#define ERANGE	$34
+