av_sub_q           58 libavcodec/tests/mpeg12framerate.c         TEST_MATCH(av_sub_q(ff_mpeg12_frame_rate_tab[i],
av_sub_q          152 libavutil/rational.h AVRational av_sub_q(AVRational b, AVRational c) av_const;
av_sub_q           47 libavutil/tests/rational.c                     r = av_sub_q(av_add_q(b,a), b);