__svfscanf
ret = __svfscanf(fp, __get_locale(), fmt, ap);
ret = __svfscanf(fp, locale, fmt, ap);
extern int __svfscanf(FILE *, locale_t, const char *, __va_list);
ret = __svfscanf(stdin, __get_locale(), fmt, ap);
ret = __svfscanf(stdin, locale, fmt, ap);
ret = __svfscanf(fp, __get_locale(), fmt0, ap);
ret = __svfscanf(fp, locale, fmt0, ap);
retval = __svfscanf(stdin, locale, fmt, ap);
return (__svfscanf(&f, locale, fmt, ap));