LOG_2_RECIPROCAL  249 3rdparty/libwebp/dsp/lossless.c     return (float)(LOG_2_RECIPROCAL * v * log((double)v));
LOG_2_RECIPROCAL  263 3rdparty/libwebp/dsp/lossless.c     return (float)(LOG_2_RECIPROCAL * log((double)v));