+#if GNULIB_TEST_ILOGBF
+SIGNATURE_CHECK (GNULIB_NAMESPACE::ilogbf, int, (float));
+#endif
+#if GNULIB_TEST_ILOGB
+SIGNATURE_CHECK (GNULIB_NAMESPACE::ilogb, int, (double));
+#endif
+#if GNULIB_TEST_ILOGBL
+SIGNATURE_CHECK (GNULIB_NAMESPACE::ilogbl, int, (long double));
+#endif
+