bionic (3) towupper.3posix.gz

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PROLOG
       This  manual  page  is part of the POSIX Programmer's Manual.  The Linux implementation of this interface
       may differ (consult the corresponding Linux manual page for details of Linux behavior), or the  interface
       may not be implemented on Linux.


NAME
       towupper, towupper_l — transliterate lowercase wide-character code to uppercase


SYNOPSIS
       #include <wctype.h>

       wint_t towupper(wint_t wc);
       wint_t towupper_l(wint_t wc, locale_t locale);


DESCRIPTION
       For  towupper():  The  functionality described on this reference page is aligned with the ISO C standard.
       Any conflict between the requirements described here and the ISO C standard is unintentional. This volume
       of POSIX.1‐2008 defers to the ISO C standard.

       The  towupper()  and  towupper_l()  functions  have  as  a  domain  a type wint_t, the value of which the
       application shall  ensure  is  a  character  representable  as  a  wchar_t,  and  a  wide-character  code
       corresponding  to  a valid character in the current locale or the value of WEOF.  If the argument has any
       other value, the behavior is undefined.  If the argument  of  towupper()  or  towupper_l()  represents  a
       lowercase  wide-character code, and there exists a corresponding uppercase wide-character code as defined
       by character type information in the current locale or in the locale represented by locale,  respectively
       (category  LC_CTYPE),  the  result  shall  be the corresponding uppercase wide-character code.  All other
       arguments in the domain are returned unchanged.

       The behavior is  undefined  if  the  locale  argument  to  towupper_l()  is  the  special  locale  object
       LC_GLOBAL_LOCALE or is not a valid locale object handle.


RETURN VALUE
       Upon  successful  completion, the towupper() and towupper_l() functions shall return the uppercase letter
       corresponding to the argument passed. Otherwise, they shall return the argument unchanged.


ERRORS
       No errors are defined.

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       None.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       setlocale(), uselocale()

       The Base Definitions volume of POSIX.1‐2008, Chapter 7, Locale, <locale.h>, <wctype.h>


       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers,  Inc
       and  The  Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event
       of any discrepancy between this version and the original IEEE and The Open Group Standard,  the  original
       IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at
       http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have  been  introduced
       during   the   conversion  of  the  source  files  to  man  page  format.  To  report  such  errors,  see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .