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−/* Test random_r.
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−   Copyright (C) 2008 Free Software Foundation, Inc.
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−
+
−   This program is free software: you can redistribute it and/or modify
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−   it under the terms of the GNU General Public License as published by
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−   the Free Software Foundation; either version 3 of the License, or
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−   (at your option) any later version.
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−
+
−   This program is distributed in the hope that it will be useful,
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−   but WITHOUT ANY WARRANTY; without even the implied warranty of
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−   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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−   GNU General Public License for more details.
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−
+
−   You should have received a copy of the GNU General Public License
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−   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
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−
+
−#include <config.h>
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−#include <stdlib.h>
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−#include <stdio.h>
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−#include <time.h>
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−
+
−#define ASSERT(expr) \
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−  do									     \
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−    {									     \
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−      if (!(expr))							     \
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−        {								     \
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−          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
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−          fflush (stderr);						     \
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−          abort ();							     \
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−        }								     \
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−    }									     \
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−  while (0)
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−
+
−int
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−main ()
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−{
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−  struct random_data rand_state;
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−  char buf[128];
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−  unsigned int i;
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−  unsigned int n_big = 0;
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−
+
−  rand_state.state = NULL;
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−  if (initstate_r (time (NULL), buf, sizeof buf, &rand_state))
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−    return 1;
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−  for (i = 0; i < 1000; i++)
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−    {
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−      int32_t r;
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−      ASSERT (random_r (&rand_state, &r) == 0);
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−      ASSERT (0 <= r);
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−      if (RAND_MAX / 2 < r)
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−	++n_big;
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−    }
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−
+
−  /* Fail if none of the numbers were larger than RAND_MAX / 2.  */
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−  return !n_big;
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−}