towlower(3) Library Functions Manual towlower(3) towlower, towlower_l - (libc -lc) #include wint_t towlower(wint_t wc); wint_t towlower_l(wint_t wc, locale_t locale); glibc ( feature_test_macros(7)): towlower_l(): glibc 2.10: _XOPEN_SOURCE >= 700 glibc 2.10: _GNU_SOURCE towlower() tolower(3). wc wc. wc . towlower_l() locale. towlower_l() locale LC_GLOBAL_LOCALE ( duplocale(3)) . wc wchar_t WEOF. wc towlower() wc. attributes(7). +----------------------+------------------------------------+---------------------------------------------------------------------------------------------+ | | | | +----------------------+------------------------------------+---------------------------------------------------------------------------------------------+ |towlower() | | (locale) (MT-Safe) | +----------------------+------------------------------------+---------------------------------------------------------------------------------------------+ |towlower_l() | | MT-Safe | +----------------------+------------------------------------+---------------------------------------------------------------------------------------------+ towlower() C11 POSIX.1-2008 (XSI). towlower_l() POSIX.1-2008. towlower() C99, POSIX.1-2001 (XSI). POSIX.1-2008 (XSI). towlower_l() glibc 2.3. POSIX.1-2008. LC_CTYPE . : . iswlower(3), towctrans(3), towupper(3), locale(7) 3 . . : . 6.18 8 2026 towlower(3)