e_isnan 195 libavutil/eval.c case e_isnan: return e->value * !!isnan(eval_expr(p, e->param[0])); e_isnan 450 libavutil/eval.c else if (strmatch(next, "isnan" )) d->type = e_isnan; e_isnan 656 libavutil/eval.c case e_isnan: