M_LN2             298 libavcodec/nellymoserenc.c             log(FFMAX(1.0, coeff_sum / (ff_nelly_band_sizes_table[band] << 7))) * 1024.0 / M_LN2;
M_LN2             250 libavcodec/zmbvenc.c         score_tab[i]= -i * log(i/(double)(ZMBV_BLOCK*ZMBV_BLOCK)) * (256/M_LN2);
M_LN2              32 libavutil/mathematics.h #ifndef M_LN2