NC
for (i = n = 0; i < NC; i++)
if ((unsigned)ch < NC)
if ((unsigned)(nch = towlower(ch)) < NC)
if ((unsigned)(nch = towupper(ch)) < NC)
for (; min < NC && min <= max; min++)
for (i = 0; i < NC; i++)
if ((unsigned)ch < NC)
if ((unsigned)ch < NC)