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  1. /*
  2.  * Copyright (c) 1993 Martin Birgmeier
  3.  * All rights reserved.
  4.  *
  5.  * You may redistribute unmodified or modified versions of this source
  6.  * code provided that the above copyright notice and this and the
  7.  * following conditions are retained.
  8.  *
  9.  * This software is provided ``as is'', and comes with no warranties
  10.  * of any kind. I shall in no event be liable for anything that happens
  11.  * to anyone/anything when using this software.
  12.  */
  13.  
  14. #include "rand48.h"
  15.  
  16. double
  17. _DEFUN (_erand48_r, (r, xseed),
  18.        struct _reent *r _AND
  19.        unsigned short xseed[3])
  20. {
  21.   __dorand48(r, xseed);
  22.   return ldexp((double) xseed[0], -48) +
  23.     ldexp((double) xseed[1], -32) +
  24.     ldexp((double) xseed[2], -16);
  25. }
  26.  
  27. #ifndef _REENT_ONLY
  28. double
  29. _DEFUN (erand48, (xseed),
  30.        unsigned short xseed[3])
  31. {
  32.   return _erand48_r (_REENT, xseed);
  33. }
  34. #endif /* !_REENT_ONLY */
  35.