towctrans man page on CentOS

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TOWCTRANS(P)		   POSIX Programmer's Manual		  TOWCTRANS(P)

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
       towctrans - wide-character transliteration

SYNOPSIS
       #include <wctype.h>

       wint_t towctrans(wint_t wc, wctrans_t desc);

DESCRIPTION
       The towctrans() function shall transliterate the wide-character code wc
       using  the  mapping  described  by  desc.  The  current	setting of the
       LC_CTYPE category should be the same as during the  call	 to  wctrans()
       that  returned the value desc.	 If the value of desc is invalid (that
       is, not obtained by a call to wctrans() or desc	is  invalidated	 by  a
       subsequent  call	 to setlocale() that has affected category LC_CTYPE ),
       the result is unspecified.

       An application wishing to check for error situations should  set	 errno
       to  0  before  calling  towctrans(). If errno is non-zero on return, an
       error has occurred.

RETURN VALUE
       If successful, the towctrans() function shall return the	 mapped	 value
       of  wc  using the mapping described by desc. Otherwise, it shall return
       wc unchanged.

ERRORS
       The towctrans() function may fail if:

       EINVAL desc contains an invalid transliteration descriptor.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The strings "tolower" and "toupper" are reserved for the standard  map‐
       ping  names.  In	 the table below, the functions in the left column are
       equivalent to the functions in the right column.

	      towlower(wc)    towctrans(wc, wctrans("tolower"))
	      towupper(wc)    towctrans(wc, wctrans("toupper"))

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       towlower() , towupper() , wctrans() , the Base  Definitions  volume  of
       IEEE Std 1003.1-2001, <wctype.h>

COPYRIGHT
       Portions	 of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating	System	Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003	by  the	 Institute  of
       Electrical  and	Electronics  Engineers, Inc and The Open Group. 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.opengroup.org/unix/online.html .

IEEE/The Open Group		     2003			  TOWCTRANS(P)
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