VP8LFastSLog2Slow   76 3rdparty/libwebp/dsp/lossless.h extern float VP8LFastSLog2Slow(int v);
VP8LFastSLog2Slow   82 3rdparty/libwebp/dsp/lossless.h   return (v < LOG_LOOKUP_IDX_MAX) ? kSLog2Table[v] : VP8LFastSLog2Slow(v);