1 /* Copyright (C) 1991-2013 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
20 #define TESTFILE "/tmp/test.dat"
28 puts ("\nFile seek test");
29 fp = fopen (TESTFILE, "w");
36 for (i = 0; i < 256; i++)
38 if (freopen (TESTFILE, "r", fp) != fp)
40 perror ("Cannot open file for reading");
44 for (i = 1; i <= 255; i++)
47 fseek (fp, (long) -i, SEEK_END);
48 if ((j = getc (fp)) != 256 - i)
50 printf ("SEEK_END failed %d\n", j);
53 if (fseek (fp, (long) i, SEEK_SET))
55 puts ("Cannot SEEK_SET");
58 if ((j = getc (fp)) != i)
60 printf ("SEEK_SET failed %d\n", j);
63 if (fseek (fp, (long) i, SEEK_SET))
65 puts ("Cannot SEEK_SET");
68 if (fseek (fp, (long) (i >= 128 ? -128 : 128), SEEK_CUR))
70 puts ("Cannot SEEK_CUR");
73 if ((j = getc (fp)) != (i >= 128 ? i - 128 : i + 128))
75 printf ("SEEK_CUR failed %d\n", j);
82 puts ((i > 255) ? "Test succeeded." : "Test FAILED!");
83 return (i > 255) ? 0 : 1;