ASC_ATAN           54 libavfilter/af_asoftclip.c     { "atan",                NULL,            0, AV_OPT_TYPE_CONST,  {.i64=ASC_ATAN},   0,          0, A, "types" },
ASC_ATAN          115 libavfilter/af_asoftclip.c         case ASC_ATAN:
ASC_ATAN          172 libavfilter/af_asoftclip.c         case ASC_ATAN: