e_isnan           180 libavutil/eval.c         case e_isnan:  return e->value * !!isnan(eval_expr(p, e->param[0]));
e_isnan           426 libavutil/eval.c     else if (strmatch(next, "isnan" )) d->type = e_isnan;
e_isnan           626 libavutil/eval.c         case e_isnan: