1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg 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.
8 *
9 * FFmpeg 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.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include "libavcodec/mathops.h"
20
21 #include <stdlib.h>
22
main(void)23 int main(void)
24 {
25 unsigned u;
26
27 for(u=0; u<65536; u++) {
28 unsigned s = u*u;
29 unsigned root = ff_sqrt(s);
30 unsigned root_m1 = ff_sqrt(s-1);
31 if (s && root != u) {
32 fprintf(stderr, "ff_sqrt failed at %u with %u\n", s, root);
33 return 1;
34 }
35 if (u && root_m1 != u - 1) {
36 fprintf(stderr, "ff_sqrt failed at %u with %u\n", s, root);
37 return 1;
38 }
39 }
40 return 0;
41 }
42