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authorGravatar Eric Andersen <andersen@codepoet.org>2003-09-05 21:04:40 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2003-09-05 21:04:40 +0000
commit6f06a7e4c1594f710828540afa4416ca1a0df031 (patch)
treeaaa1233538ca60a0ae57a68c9e48347558f49062 /libc/stdlib
parentf467902b7947a6064b35605dfd2ee74367b80785 (diff)
downloaduClibc-6f06a7e4c1594f710828540afa4416ca1a0df031.tar.gz
uClibc-6f06a7e4c1594f710828540afa4416ca1a0df031.tar.bz2
mjn3 noticed we were missing seed48, which was odd since we had
all the other *48 random functions.
Diffstat (limited to 'libc/stdlib')
-rw-r--r--libc/stdlib/Makefile3
-rw-r--r--libc/stdlib/seed48.c30
-rw-r--r--libc/stdlib/seed48_r.c38
3 files changed, 70 insertions, 1 deletions
diff --git a/libc/stdlib/Makefile b/libc/stdlib/Makefile
index 01765c1f6..a60af2712 100644
--- a/libc/stdlib/Makefile
+++ b/libc/stdlib/Makefile
@@ -82,7 +82,8 @@ CSRC = abort.c getenv.c mkdtemp.c mktemp.c realpath.c mkstemp.c mkstemp64.c \
rand.c random.c random_r.c setenv.c system.c div.c ldiv.c getpt.c \
ptsname.c grantpt.c unlockpt.c gcvt.c drand48-iter.c jrand48.c \
jrand48_r.c lrand48.c lrand48_r.c mrand48.c mrand48_r.c nrand48.c \
- nrand48_r.c rand_r.c srand48.c srand48_r.c calloc.c valloc.c
+ nrand48_r.c rand_r.c srand48.c srand48_r.c seed48.c seed48_r.c \
+ calloc.c valloc.c
ifeq ($(UCLIBC_HAS_FLOATS),y)
CSRC += drand48.c drand48_r.c erand48.c erand48_r.c
endif
diff --git a/libc/stdlib/seed48.c b/libc/stdlib/seed48.c
new file mode 100644
index 000000000..ec1ef252e
--- /dev/null
+++ b/libc/stdlib/seed48.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 1995,1996,1997,1998,2001,2002 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdlib.h>
+
+/* Global state for non-reentrant functions. Defined in drand48-iter.c. */
+extern struct drand48_data __libc_drand48_data;
+
+unsigned short int *
+seed48 (unsigned short int seed16v[3])
+{
+ (void) seed48_r (seed16v, &__libc_drand48_data);
+ return __libc_drand48_data.__old_x;
+}
diff --git a/libc/stdlib/seed48_r.c b/libc/stdlib/seed48_r.c
new file mode 100644
index 000000000..734b5e39d
--- /dev/null
+++ b/libc/stdlib/seed48_r.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 1995, 1997, 1998, 2001 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+int seed48_r (unsigned short int seed16v[3], struct drand48_data *buffer)
+{
+ /* Save old value at a private place to be used as return value. */
+ memcpy (buffer->__old_x, buffer->__x, sizeof (buffer->__x));
+
+ /* Install new state. */
+ buffer->__x[2] = seed16v[2];
+ buffer->__x[1] = seed16v[1];
+ buffer->__x[0] = seed16v[0];
+ buffer->__a = 0x5deece66dull;
+ buffer->__c = 0xb;
+ buffer->__init = 1;
+
+ return 0;
+}