[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/math/w_log10f.c b/ap/libc/glibc/glibc-2.23/math/w_log10f.c
new file mode 100644
index 0000000..6f4dd7a
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/math/w_log10f.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2011-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
+
+ 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 <fenv.h>
+#include <math.h>
+#include <math_private.h>
+
+
+/* wrapper log10f(x) */
+float
+__log10f (float x)
+{
+ if (__builtin_expect (islessequal (x, 0.0f), 0) && _LIB_VERSION != _IEEE_)
+ {
+ if (x == 0.0f)
+ {
+ feraiseexcept (FE_DIVBYZERO);
+ return __kernel_standard_f (x, x, 118); /* log10(0) */
+ }
+ else
+ {
+ feraiseexcept (FE_INVALID);
+ return __kernel_standard_f (x, x, 119); /* log10(x<0) */
+ }
+ }
+
+ return __ieee754_log10f (x);
+}
+weak_alias (__log10f, log10f)