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/* test-yarandom.c --- generate a file of random bytes for analysis.
* xscreensaver, Copyright (c) 2018 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation. No representations are made about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <ctype.h>
#include <stdio.h>
#include "yarandom.h"
char *progname = 0;
int
main (int argc, char **argv)
{
unsigned long i, n;
char *f;
FILE *fd;
progname = argv[0];
if (argc != 3)
{
fprintf(stderr, "usage: %s bytes outfile\n", argv[0]);
exit(1);
}
n = atol (argv[1]);
f = argv[2];
# undef ya_rand_init
ya_rand_init(0);
fd = fopen (f, "w");
if (!fd) { perror (f); exit (1); }
n /= sizeof(uint32_t);
for (i = 0; i < n; i++)
{
union { uint32_t i; char s[sizeof(uint32_t)]; } rr;
rr.i = random();
if (! fwrite (rr.s, sizeof(rr.s), 1, fd))
{
perror ("write");
exit (1);
}
}
fclose (fd);
fprintf (stderr, "%s: %s: wrote %ld bytes\n",
progname, f, i * sizeof(uint32_t));
exit(0);
}
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