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diff --git a/gnulib b/gnulib
deleted file mode 160000
-Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1
diff --git a/gnulib/tests/test-truncf1.c b/gnulib/tests/test-truncf1.c
new file mode 100644
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--- /dev/null
+++ b/gnulib/tests/test-truncf1.c
@@ -0,0 +1,65 @@
+/* Test of rounding towards zero.
+   Copyright (C) 2007-2011 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (truncf, float, (float));
+
+#include "isnanf-nolibm.h"
+#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
+#include "macros.h"
+
+int
+main ()
+{
+  /* Zero.  */
+  ASSERT (truncf (0.0f) == 0.0f);
+  ASSERT (truncf (minus_zerof) == 0.0f);
+  /* Positive numbers.  */
+  ASSERT (truncf (0.3f) == 0.0f);
+  ASSERT (truncf (0.7f) == 0.0f);
+  ASSERT (truncf (1.0f) == 1.0f);
+  ASSERT (truncf (1.5f) == 1.0f);
+  ASSERT (truncf (1.999f) == 1.0f);
+  ASSERT (truncf (2.0f) == 2.0f);
+  ASSERT (truncf (65535.99f) == 65535.0f);
+  ASSERT (truncf (65536.0f) == 65536.0f);
+  ASSERT (truncf (2.341e31f) == 2.341e31f);
+  /* Negative numbers.  */
+  ASSERT (truncf (-0.3f) == 0.0f);
+  ASSERT (truncf (-0.7f) == 0.0f);
+  ASSERT (truncf (-1.0f) == -1.0f);
+  ASSERT (truncf (-1.5f) == -1.0f);
+  ASSERT (truncf (-1.999f) == -1.0f);
+  ASSERT (truncf (-2.0f) == -2.0f);
+  ASSERT (truncf (-65535.99f) == -65535.0f);
+  ASSERT (truncf (-65536.0f) == -65536.0f);
+  ASSERT (truncf (-2.341e31f) == -2.341e31f);
+  /* Infinite numbers.  */
+  ASSERT (truncf (Infinityf ()) == Infinityf ());
+  ASSERT (truncf (- Infinityf ()) == - Infinityf ());
+  /* NaNs.  */
+  ASSERT (isnanf (truncf (NaNf ())));
+
+  return 0;
+}