srand48_r.c 1.4 KB

123456789101112131415161718192021222324252627282930313233343536373839
  1. /* Copyright (C) 1995, 1996, 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. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. #include <stdlib.h>
  17. #include <limits.h>
  18. int srand48_r (long int seedval, struct drand48_data *buffer)
  19. {
  20. /* The standards say we only have 32 bits. */
  21. if (sizeof (long int) > 4)
  22. seedval &= 0xffffffffl;
  23. buffer->__x[2] = seedval >> 16;
  24. buffer->__x[1] = seedval & 0xffffl;
  25. buffer->__x[0] = 0x330e;
  26. buffer->__a = 0x5deece66dull;
  27. buffer->__c = 0xb;
  28. buffer->__init = 1;
  29. return 0;
  30. }
  31. libc_hidden_def(srand48_r)