ff_log2_16bit      33 libavutil/intmath.c     return ff_log2_16bit(v);
ff_log2_16bit      40 libavutil/intmath.h #   ifndef ff_log2_16bit
ff_log2_16bit      68 libavutil/intmath.h #ifndef ff_log2_16bit
ff_log2_16bit      84 libavutil/intmath.h #define av_log2_16bit ff_log2_16bit