209 lines
4.4 KiB
HTML
209 lines
4.4 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of TOWUPPER</TITLE>
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</HEAD><BODY>
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<H1>TOWUPPER</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2017-09-15<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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towupper, towupper_l - convert a wide character to uppercase
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/wctype.h">wctype.h</A>></B>
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<B>wint_t towupper(wint_t </B><I>wc</I><B>);</B>
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<B>wint_t towupper_l(wint_t </B><I>wc</I><B>, locale_t </B><I>locale</I><B>);</B>
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</PRE>
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<P>
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Feature Test Macro Requirements for glibc (see
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<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
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<P>
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<B>towupper_l</B>():
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<DL COMPACT><DT id="1"><DD>
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<DL COMPACT>
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<DT id="2">Since glibc 2.10:<DD>
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_XOPEN_SOURCE >= 700
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<DT id="3">Before glibc 2.10:<DD>
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_GNU_SOURCE
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</DL>
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</DL>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>towupper</B>()
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function is the wide-character equivalent of the
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<B><A HREF="/cgi-bin/man/man2html?3+toupper">toupper</A></B>(3)
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function.
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If
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<I>wc</I>
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is a lowercase wide character,
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and there exists an uppercase equivalent in the current locale,
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it returns the uppercase equivalent of
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<I>wc</I>.
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In all other cases,
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<I>wc</I>
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is returned unchanged.
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<P>
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The
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<B>towupper_l</B>()
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function performs the same task,
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but performs the conversion based on the character type information in
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the locale specified by
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<I>locale</I>.
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The behavior of
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<B>towupper_l</B>()
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is undefined if
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<I>locale</I>
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is the special locale object
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<B>LC_GLOBAL_LOCALE</B>
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(see
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<B><A HREF="/cgi-bin/man/man2html?3+duplocale">duplocale</A></B>(3))
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or is not a valid locale object handle.
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<P>
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The argument
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<I>wc</I>
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must be representable as a
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<I>wchar_t</I>
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and be a valid character in the locale or be the value
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<B>WEOF</B>.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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If
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<I>wc</I>
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was convertible to uppercase,
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<B>towupper</B>()
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returns its uppercase equivalent;
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otherwise it returns
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<I>wc</I>.
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<A NAME="lbAF"> </A>
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<H2>VERSIONS</H2>
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The
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<B>towupper_l</B>()
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function first appeared in glibc 2.3.
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<A NAME="lbAG"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>towupper</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe locale<BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>towupper_l</B>()
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</TD><TD>Thread safety</TD><TD>MT-Safe<BR></TD></TR>
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</TABLE>
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<A NAME="lbAH"> </A>
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<H2>CONFORMING TO</H2>
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<B>towupper</B>():
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C99, POSIX.1-2001 (XSI);
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present as an XSI extension in POSIX.1-2008, but marked obsolete.
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<P>
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<B>towupper_l</B>():
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POSIX.1-2008.
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<A NAME="lbAI"> </A>
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<H2>NOTES</H2>
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The behavior of these functions depends on the
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<B>LC_CTYPE</B>
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category of the locale.
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<P>
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These functions are not very appropriate for dealing with Unicode characters,
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because Unicode knows about three cases: upper, lower and title case.
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<A NAME="lbAJ"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?3+iswupper">iswupper</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+towctrans">towctrans</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?3+towlower">towlower</A></B>(3),
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<B><A HREF="/cgi-bin/man/man2html?7+locale">locale</A></B>(7)
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<A NAME="lbAK"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="4"><A HREF="#lbAB">NAME</A><DD>
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<DT id="5"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="6"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="7"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="8"><A HREF="#lbAF">VERSIONS</A><DD>
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<DT id="9"><A HREF="#lbAG">ATTRIBUTES</A><DD>
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<DT id="10"><A HREF="#lbAH">CONFORMING TO</A><DD>
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<DT id="11"><A HREF="#lbAI">NOTES</A><DD>
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<DT id="12"><A HREF="#lbAJ">SEE ALSO</A><DD>
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<DT id="13"><A HREF="#lbAK">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:58 GMT, March 31, 2021
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</BODY>
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</HTML>
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