AAC_MUL31          53 libavcodec/aac_defines.h #define AAC_MUL31(x, y)     (int)(((int64_t)(x) * (y) + 0x40000000) >> 31)
AAC_MUL31         102 libavcodec/aac_defines.h #define AAC_MUL31(x, y)     ((x) * (y))