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towupper(3) [opensolaris man page]

TOWUPPER(3)						     Linux Programmer's Manual						       TOWUPPER(3)

NAME
towupper, towupper_l - convert a wide character to uppercase 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 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 speci- fied 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. RETURN VALUE
If wc was convertible to uppercase, towupper() returns its uppercase equivalent; otherwise it returns wc. VERSIONS
The towupper_l() function first appeared in glibc 2.3. 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 | +-------------+---------------+----------------+ 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. NOTES
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. SEE ALSO
iswupper(3), towctrans(3), towlower(3), locale(7) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. GNU
2017-09-15 TOWUPPER(3)

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