1TOWUPPER(3P)               POSIX Programmer's Manual              TOWUPPER(3P)
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PROLOG

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

12       towupper - transliterate lowercase wide-character code to uppercase
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SYNOPSIS

15       #include <wctype.h>
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17       wint_t towupper(wint_t wc);
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DESCRIPTION

21       The towupper() function has as a domain a type  wint_t,  the  value  of
22       which  the  application  shall ensure is a character representable as a
23       wchar_t, and a wide-character code corresponding to a  valid  character
24       in  the  current  locale  or the value of WEOF. If the argument has any
25       other value, the behavior is undefined. If the argument  of  towupper()
26       represents  a  lowercase wide-character code, and there exists a corre‐
27       sponding uppercase wide-character code (as defined  by  character  type
28       information in the program locale category LC_CTYPE ), the result shall
29       be the corresponding uppercase wide-character code.   All  other  argu‐
30       ments in the domain are returned unchanged.
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RETURN VALUE

33       Upon  successful completion, towupper() shall return the uppercase let‐
34       ter corresponding to the argument passed. Otherwise,  it  shall  return
35       the argument unchanged.
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ERRORS

38       No errors are defined.
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40       The following sections are informative.
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EXAMPLES

43       None.
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APPLICATION USAGE

46       None.
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RATIONALE

49       None.
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FUTURE DIRECTIONS

52       None.
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SEE ALSO

55       setlocale(), the Base Definitions volume of IEEE Std 1003.1-2001, Chap‐
56       ter 7, Locale, <wctype.h>, <wchar.h>
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59       Portions of this text are reprinted and reproduced in  electronic  form
60       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
61       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
62       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
63       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
64       event of any discrepancy between this version and the original IEEE and
65       The Open Group Standard, the original IEEE and The Open Group  Standard
66       is  the  referee document. The original Standard can be obtained online
67       at http://www.opengroup.org/unix/online.html .
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71IEEE/The Open Group                  2003                         TOWUPPER(3P)
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