[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/math/w_log2l.c b/ap/libc/glibc/glibc-2.22/math/w_log2l.c
new file mode 100644
index 0000000..5ec2b30
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/math/w_log2l.c
@@ -0,0 +1,44 @@
+/* Copyright (C) 2011-2015 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 log2l(x) */
+long double
+__log2l (long double x)
+{
+ if (__builtin_expect (islessequal (x, 0.0L), 0) && _LIB_VERSION != _IEEE_)
+ {
+ if (x == 0.0L)
+ {
+ feraiseexcept (FE_DIVBYZERO);
+ return __kernel_standard_l (x, x, 248); /* log2(0) */
+ }
+ else
+ {
+ feraiseexcept (FE_INVALID);
+ return __kernel_standard_l (x, x, 249); /* log2(x<0) */
+ }
+ }
+
+ return __ieee754_log2l (x);
+}
+weak_alias (__log2l, log2l)