isnan_vec        1997 libswscale/utils.c     if (isnan_vec(filter->chrH) ||
isnan_vec        1998 libswscale/utils.c         isnan_vec(filter->chrV) ||
isnan_vec        1999 libswscale/utils.c         isnan_vec(filter->lumH) ||
isnan_vec        2000 libswscale/utils.c         isnan_vec(filter->lumV))