1 files changed, 41 insertions, 0 deletions
diff --git a/math/w_log1p.c b/math/w_log1p.c
new file mode 100644
index 0000000000..28b621b301
--- /dev/null
+++ b/math/w_log1p.c
@@ -0,0 +1,41 @@
+/* Wrapper for __log1p that handles setting errno.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <math.h>
+#include <math_private.h>
+
+double
+__w_log1p (double x)
+{
+  if (__glibc_unlikely (islessequal (x, -1.0)))
+    {
+      if (x == -1.0)
+	__set_errno (ERANGE);
+      else
+	__set_errno (EDOM);
+    }
+
+  return __log1p (x);
+}
+weak_alias (__w_log1p, log1p)
+
+#ifdef NO_LONG_DOUBLE
+strong_alias (__w_log1p, __log1pl)
+weak_alias (__w_log1p, log1pl)
+#endif