libc/stdlib/jrand48_r.c

   1 /* Copyright (C) 1995, 1997, 1998, 2001 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu <mailto:drepper@gnu.ai.mit.edu>>, August 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <stdlib.h>
  20
  21 int jrand48_r (unsigned short int xsubi[3], struct drand48_data *buffer, long int *result)
  22 {
  23     /* Compute next state.  */
  24     if (__drand48_iterate (xsubi, buffer) < 0)
  25         return -1;
  26
  27     /* Store the result.  */
  28     *result = ((xsubi[2] << 16) | xsubi[1]) & 0xffffffffl;
  29
  30     return 0;
  31 }
  32 libc_hidden_def(jrand48_r)