BITS_FRW_ACC       49 libavcodec/x86/fdct_mmx.c #define BITS_FRW_ACC   3 //; 2 or 3 for accuracy
BITS_FRW_ACC       56 libavcodec/x86/idct_mmx_xvid.c #define BITS_FRW_ACC    3                              // 2 or 3 for accuracy