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-rw-r--r--libavutil/rational.c33
1 files changed, 29 insertions, 4 deletions
diff --git a/libavutil/rational.c b/libavutil/rational.c
index 4770c54f8b..1a833ebec1 100644
--- a/libavutil/rational.c
+++ b/libavutil/rational.c
@@ -2,20 +2,20 @@
* rational numbers
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -144,3 +144,28 @@ int av_find_nearest_q_idx(AVRational q, const AVRational* q_list)
return nearest_q_idx;
}
+
+#ifdef TEST
+int main(void)
+{
+ AVRational a,b;
+ for (a.num = -2; a.num <= 2; a.num++) {
+ for (a.den = -2; a.den <= 2; a.den++) {
+ for (b.num = -2; b.num <= 2; b.num++) {
+ for (b.den = -2; b.den <= 2; b.den++) {
+ int c = av_cmp_q(a,b);
+ double d = av_q2d(a) == av_q2d(b) ?
+ 0 : (av_q2d(a) - av_q2d(b));
+ if (d > 0) d = 1;
+ else if (d < 0) d = -1;
+ else if (d != d) d = INT_MIN;
+ if (c != d)
+ av_log(0, AV_LOG_ERROR, "%d/%d %d/%d, %d %f\n", a.num,
+ a.den, b.num, b.den, c,d);
+ }
+ }
+ }
+ }
+ return 0;
+}
+#endif