LCG_M              46 libavfilter/vf_histeq.c #define LCG(x) (((x) * LCG_A + LCG_C) % LCG_M)
LCG_M             220 libavfilter/vf_histeq.c                         lut = lutlo + ((luthi - lutlo + 1) * jran) / LCG_M;