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-'\" t
-.\" and Copyright (C) 2014 Michael Kerrisk <mtk.manpages@gmail.com>
-.\"
-.\" SPDX-License-Identifier: GPL-2.0-or-later
-.\"
-.\" References consulted:
-.\"   GNU glibc-2 source code and manual
-.\"   Dinkumware C library reference http://www.dinkumware.com/
-.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
-.\"   ISO/IEC 9899:1999
-.\"
-.TH towupper 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-towupper, towupper_l \- convert a wide character to uppercase
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.B #include <wctype.h>
-.P
-.BI "wint_t towupper(wint_t " wc );
-.BI "wint_t towupper_l(wint_t " wc ", locale_t " locale );
-.fi
-.P
-.RS -4
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.RE
-.P
-.BR towupper_l ():
-.nf
-    Since glibc 2.10:
-        _XOPEN_SOURCE >= 700
-    Before glibc 2.10:
-        _GNU_SOURCE
-.fi
-.SH DESCRIPTION
-The
-.BR towupper ()
-function is the wide-character equivalent of the
-.BR toupper (3)
-function.
-If
-.I wc
-is a lowercase wide character,
-and there exists an uppercase equivalent in the current locale,
-it returns the uppercase equivalent of
-.IR wc .
-In all other cases,
-.I wc
-is returned unchanged.
-.P
-The
-.BR towupper_l ()
-function performs the same task,
-but performs the conversion based on the character type information in
-the locale specified by
-.IR locale .
-The behavior of
-.BR towupper_l ()
-is undefined if
-.I locale
-is the special locale object
-.B LC_GLOBAL_LOCALE
-(see
-.BR duplocale (3))
-or is not a valid locale object handle.
-.P
-The argument
-.I wc
-must be representable as a
-.I wchar_t
-and be a valid character in the locale or be the value
-.BR WEOF .
-.SH RETURN VALUE
-If
-.I wc
-was convertible to uppercase,
-.BR towupper ()
-returns its uppercase equivalent;
-otherwise it returns
-.IR wc .
-.SH ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface	Attribute	Value
-T{
-.na
-.nh
-.BR towupper ()
-T}	Thread safety	MT-Safe locale
-T{
-.na
-.nh
-.BR towupper_l ()
-T}	Thread safety	MT-Safe
-.TE
-.SH STANDARDS
-.TP
-.BR towupper ()
-C11, POSIX.1-2008 (XSI).
-.TP
-.BR towupper_l ()
-POSIX.1-2008.
-.SH HISTORY
-.TP
-.BR towupper ()
-C99, POSIX.1-2001 (XSI).
-Obsolete in POSIX.1-2008 (XSI).
-.TP
-.BR towupper_l ()
-POSIX.1-2008.
-glibc 2.3.
-.SH NOTES
-The behavior of these functions depends on the
-.B LC_CTYPE
-category of the locale.
-.P
-These functions are not very appropriate for dealing with Unicode characters,
-because Unicode knows about three cases: upper, lower, and title case.
-.SH SEE ALSO
-.BR iswupper (3),
-.BR towctrans (3),
-.BR towlower (3),
-.BR locale (7)