stdlib/lcong48_r.c

   1 /* Copyright (C) 1995-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <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 <stdint.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <limits.h>
  23
  24 int
  25 __lcong48_r (unsigned short int param[7], struct drand48_data *buffer)
  26 {
  27   /* Store the given values.  */
  28   memcpy (buffer->__x, &param[0], sizeof (buffer->__x));
  29   buffer->__a = ((uint64_t) param[5] << 32 | (uint32_t) param[4] << 16
  30                  | param[3]);
  31   buffer->__c = param[6];
  32   buffer->__init = 1;
  33
  34   return 0;
  35 }
  36 weak_alias (__lcong48_r, lcong48_r)