text: /* Reentrant random function from POSIX.1c.
     Copyright (C) 1996-2016 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
     Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
  
     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 <stdlib.h>
  
  
  /* This algorithm is mentioned in the ISO C standard, here extended
     for 32 bits.  */
  int
  rand_r (unsigned int *seed)
  {
    unsigned int next = *seed;
    int result;
  
    next *= 1103515245;
    next += 12345;
    result = (unsigned int) (next / 65536) % 2048;
  
    next *= 1103515245;
    next += 12345;
    result <<= 10;
    result ^= (unsigned int) (next / 65536) % 1024;
  
    next *= 1103515245;
    next += 12345;
    result <<= 10;
    result ^= (unsigned int) (next / 65536) % 1024;
  
    *seed = next;
  
    return result;
  }
  