glibc/stdlib/jrand48_r.c
Ulrich Drepper 5bcba0ed52 [BZ #3747]
2006-12-18  Jakub Jelinek  <jakub@redhat.com>
	[BZ #3747]
	* stdlib/jrand48_r.c (__jrand48_r): Make sure result is in the
	[-231 .. 231) range.
	* stdlib/tst-rand48.c (main): Fix expected values for 64-bit
	targets.
	* stdlib/tst-rand48-2.c: New test.
	* stdlib/Makefile (tests): Add tst-rand48-2.
2006-12-19 08:18:18 +00:00

38 lines
1.3 KiB
C

/* Copyright (C) 1995, 1997, 1998, 2001, 2006 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>
int
__jrand48_r (xsubi, buffer, result)
unsigned short int xsubi[3];
struct drand48_data *buffer;
long int *result;
{
/* Compute next state. */
if (__drand48_iterate (xsubi, buffer) < 0)
return -1;
/* Store the result. */
*result = (int32_t) ((xsubi[2] << 16) | xsubi[1]);
return 0;
}
weak_alias (__jrand48_r, jrand48_r)