--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-10-05  Bruno Haible  <bruno@clisp.org>
 
+	Tests for module 'fmodf'.
+	* modules/fmodf-tests: New file.
+	* tests/test-fmodf.c: New file.
+
 	New module 'fmodf'.
 	* lib/math.in.h (fmodf): New declaration.
 	* lib/fmodf.c: New file.

new file mode 100644
--- /dev/null
+++ b/modules/fmodf-tests
@@ -0,0 +1,13 @@
+Files:
+tests/test-fmodf.c
+tests/signature.h
+tests/macros.h
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-fmodf
+check_PROGRAMS += test-fmodf
+test_fmodf_LDADD = $(LDADD) @FMODF_LIBM@

new file mode 100644
--- /dev/null
+++ b/tests/test-fmodf.c
@@ -0,0 +1,42 @@
+/* Test of fmodf() function.
+   Copyright (C) 2010-2011 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>, 2010-2011.  */
+
+#include <config.h>
+
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (fmodf, float, (float, float));
+
+#include "macros.h"
+
+volatile float x;
+volatile float y;
+float z;
+
+int
+main ()
+{
+  /* A particular value.  */
+  x = 9.245907f;
+  y = 3.141593f;
+  z = fmodf (x, y);
+  ASSERT (z >= 2.962720f && z <= 2.962722f);
+
+  return 0;
+}