From dfde8a34e5419ac99265e3ecc2e82f378674128a Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Fri, 26 Oct 2012 14:48:40 -0400 Subject: lavu: add av_ctz() for trailing zero bit count --- libavutil/intmath.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 libavutil/intmath.c (limited to 'libavutil/intmath.c') diff --git a/libavutil/intmath.c b/libavutil/intmath.c new file mode 100644 index 0000000000..8db425c6e9 --- /dev/null +++ b/libavutil/intmath.c @@ -0,0 +1,39 @@ +/* + * This file is part of Libav. + * + * Libav 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, + * 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 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "intmath.h" + +/* undef these to get the function prototypes from common.h */ +#undef av_log2 +#undef av_log2_16bit +#include "common.h" + +int av_log2(unsigned v) +{ + return ff_log2(v); +} + +int av_log2_16bit(unsigned v) +{ + return ff_log2_16bit(v); +} + +int av_ctz(int v) +{ + return ff_ctz(v); +} -- cgit v1.2.3