A2                 32 libavcodec/binkdsp.c #define A2  2217
A2                 33 libavcodec/eaidct.c #define A2    277 /* sin(pi/8)*sqrt(2)<<9 */
A2                 50 libavcodec/faandct.c #define A2 0.54119610014619698435 // cos(pi*6/16)sqrt(2)
A2                 37 libavcodec/faanidct.c #define A2 0.92387953251128675613 // cos(pi*2/16)