Merge in an ugly pile of rand* functions from glibc. :(

1 files changed, 32 insertions, 0 deletions

diff --git a/libc/stdlib/drand48.c b/libc/stdlib/drand48.c
new file mode 100644
index 000000000..d18ff3f08
--- /dev/null
+++ b/libc/stdlib/drand48.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1995, 1996, 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 <mailto: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;
+
+double drand48 (void)
+{
+    double result;
+
+    erand48_r (__libc_drand48_data.__x, &__libc_drand48_data, &result);
+
+    return result;
+}