COULD_HAVE_HAD

<ST_IN_SCRIPTING>{HNUM} {
  errno = 0;
  char *hex = yytext;
  zendlval->value.lval = strtol(hex, NULL, 16);
  if ( errno == ERANGE ) {
    zendlval->value.dval = zend_hex_strtod(hex, NULL);
    zendlval->type = IS_DOUBLE;
    return T_DNUMBER;
  }
  zendlval->type = IS_LONG;
  return T_LNUMBER;
}