M_SQRT1_2          52 extra_lib/include/ffmpeg_android/libavutil/mathematics.h #define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */
M_SQRT1_2          52 extra_lib/include/libavutil/mathematics.h #define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */