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   towupper    ( 3 )

преобразовать широкий символ в верхний регистр (convert a wide character to uppercase)

Имя (Name)

towupper, towupper_l - convert a wide character to uppercase

Синопсис (Synopsis)

#include <wctype.h>

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)):

towupper_l(): Since glibc 2.10: _XOPEN_SOURCE >= 700 Before glibc 2.10: _GNU_SOURCE


Описание (Description)

The towupper() function is the wide-character equivalent of the
       toupper(3) function.  If wc is a lowercase wide character, and
       there exists an uppercase equivalent in the current locale, it
       returns the uppercase equivalent of wc.  In all other cases, wc
       is returned unchanged.

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.


Возвращаемое значение (Return value)

If wc was convertible to uppercase, towupper() returns its
       uppercase equivalent; otherwise it returns wc.

Версии (Versions)

The towupper_l() function first appeared in glibc 2.3.

Атрибуты (Attributes)

For an explanation of the terms used in this section, see
       attributes(7).

┌───────────────────────────────┬───────────────┬────────────────┐ │Interface Attribute Value │ ├───────────────────────────────┼───────────────┼────────────────┤ │towupper() │ Thread safety │ MT-Safe locale │ ├───────────────────────────────┼───────────────┼────────────────┤ │towupper_l() │ Thread safety │ MT-Safe │ └───────────────────────────────┴───────────────┴────────────────┘


Стандарты (Conforming to)

towupper(): C99, POSIX.1-2001 (XSI); present as an XSI extension
       in POSIX.1-2008, but marked obsolete.

towupper_l(): POSIX.1-2008.


Примечание (Note)

The behavior of these functions depends on the LC_CTYPE category
       of the locale.

These functions are not very appropriate for dealing with Unicode characters, because Unicode knows about three cases: upper, lower, and title case.


Смотри также (See also)

iswupper(3), towctrans(3), towlower(3), locale(7)