towlower
extern wint_t towlower(wint_t wc);
# define __towlower towlower
# define TOLOWER(Ch) towlower (Ch)
# define TOLOWER(Ch) towlower (Ch)
return c == k ? towlower(k) : c;
cmp = towlower(*wcs1) - towlower(*wcs2++);
cmp = towlower(*wcs1) - towlower(*wcs2++);
wint_t low = towlower(ch);
wint_t low = towlower(ch);
if (towlower(L'A') != L'a') {