--- /dev/null
+/* Test of log10*() function family.
+ Copyright (C) 2012 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/>. */
+
+static void
+test_function (void)
+{
+ /* [MX] shaded specification in POSIX. */
+
+ /* Negative arguments. */
+ ASSERT (ISNAN (LOG10 (- L_(0.00001))));
+ ASSERT (ISNAN (LOG10 (- L_(1.0))));
+ ASSERT (ISNAN (LOG10 (- L_(1000000.0))));
+ ASSERT (ISNAN (LOG10 (- INFINITY)));
+
+ /* NaN. */
+ ASSERT (ISNAN (LOG10 (NAN)));
+
+ /* Only rational value. */
+ {
+ DOUBLE z = LOG10 (L_(1.0));
+ ASSERT (z == L_(0.0));
+ ASSERT (!signbit (z));
+ }
+
+ /* Infinity. */
+ ASSERT (LOG10 (INFINITY) == INFINITY);
+}