|TOWUPPER(3)||Linux Programmer's Manual||TOWUPPER(3)|
wint_t towupper(wint_t wc);
wint_t towupper_l(wint_t wc, locale_t locale);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
- Since glibc 2.10:
- _XOPEN_SOURCE >= 700
- Before glibc 2.10:
The towupper_l() function performs the same task, but performs the conversion based on the character type information in the locale specified by locale. The behavior of towupper_l() is undefined if locale is the special locale object LC_GLOBAL_LOCALE (see duplocale(3)) or is not a valid locale object handle.
The argument wc must be representable as a wchar_t and be a valid character in the locale or be the value WEOF.
|towupper ()||Thread safety||MT-Safe locale|
|towupper_l ()||Thread safety||MT-Safe|
These functions are not very appropriate for dealing with Unicode characters, because Unicode knows about three cases: upper, lower and title case.