fastrand.c 678 B

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  1. /*
  2. * This file is part of the UCB release of Plan 9. It is subject to the license
  3. * terms in the LICENSE file found in the top-level directory of this
  4. * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
  5. * part of the UCB release of Plan 9, including this file, may be copied,
  6. * modified, propagated, or distributed except according to the terms contained
  7. * in the LICENSE file.
  8. */
  9. #include <u.h>
  10. #include <libc.h>
  11. #include <libsec.h>
  12. /*
  13. * use the X917 random number generator to create random
  14. * numbers (faster than truerand() but not as random).
  15. */
  16. uint32_t
  17. fastrand(void)
  18. {
  19. uint32_t x;
  20. genrandom((uint8_t*)&x, sizeof x);
  21. return x;
  22. }