math: add exception handling functionality

According to standards SVID and SYSV.
Modified lgamma calling in case when 'signgam' variable should not be used.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/libm/k_standardf.c b/libm/k_standardf.c
new file mode 100644
index 000000000..6312c35f1
--- /dev/null
+++ b/libm/k_standardf.c
@@ -0,0 +1,31 @@
+/* Implement __kernel_standard_f.
+   Copyright (C) 2011-2016 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 <math.h>
+#include "math_private.h"
+
+
+/* Handle errors for a libm function as specified by TYPE (see
+   comments in k_standard.c for details), with arguments X and Y,
+   returning the appropriate return value for that function.  */
+
+float
+__kernel_standard_f (float x, float y, int type)
+{
+  return __kernel_standard (x, y, type);
+}