R2                517 libavcodec/simple_idct.c #define R2 R_FIX(0.2705980501)
R2                 42 libavutil/sha1.c #define R2(v,w,x,y,z,i) z+=( w^x     ^y)    +blk (i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);