BITS_FRW_ACC       34 libavcodec/mips/xvid_idct_mmi.c #define BITS_FRW_ACC    3                           // 2 or 3 for accuracy
BITS_FRW_ACC       50 libavcodec/x86/fdct.c #define BITS_FRW_ACC   3 //; 2 or 3 for accuracy