[Feature][ZXW-33]merge ZXW 0428 version
Change-Id: I11f167edfea428d9fab198ff00ff1364932d1b0b
diff --git a/ap/libc/glibc/glibc-2.23/stdlib/erand48_r.c b/ap/libc/glibc/glibc-2.23/stdlib/erand48_r.c
new file mode 100644
index 0000000..c8519e2
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.23/stdlib/erand48_r.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
+
+ 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 <ieee754.h>
+#include <stdlib.h>
+#include <limits.h>
+
+
+int
+__erand48_r (unsigned short int xsubi[3], struct drand48_data *buffer,
+ double *result)
+{
+ union ieee754_double temp;
+
+ /* Compute next state. */
+ if (__drand48_iterate (xsubi, buffer) < 0)
+ return -1;
+
+ /* Construct a positive double with the 48 random bits distributed over
+ its fractional part so the resulting FP number is [0.0,1.0). */
+
+ temp.ieee.negative = 0;
+ temp.ieee.exponent = IEEE754_DOUBLE_BIAS;
+ temp.ieee.mantissa0 = (xsubi[2] << 4) | (xsubi[1] >> 12);
+ temp.ieee.mantissa1 = ((xsubi[1] & 0xfff) << 20) | (xsubi[0] << 4);
+
+ /* Please note the lower 4 bits of mantissa1 are always 0. */
+ *result = temp.d - 1.0;
+
+ return 0;
+}
+weak_alias (__erand48_r, erand48_r)