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mathops.c
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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 
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 }
const char * s
Definition: avisynth_c.h:768
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:343
#define ff_sqrt
Definition: mathops.h:206
int main(void)
Definition: mathops.c:23