B3                 43 libavcodec/faandct.c #define B3 0.850430094767256448766702844371412325 // (cos(pi*3/16)sqrt(2))^-1
B3                 30 libavcodec/faanidct.c #define B3 1.1758756024193587169745 // cos(pi*3/16)sqrt(2)