wctrans(3p) [suse man page]

WCTRANS(3P)						     POSIX Programmer's Manual						       WCTRANS(3P)

PROLOG

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

NAME

       wctrans - define character mapping

SYNOPSIS

       #include <wctype.h>

       wctrans_t wctrans(const char *charclass);

DESCRIPTION

       The wctrans() function is defined for valid character mapping names identified in the current locale. The charclass is a string identifying
       a  generic  character mapping name for which codeset-specific information is required. The following character mapping names are defined in
       all locales: tolower and toupper.

       The function shall return a value of type wctrans_t, which can be used as the second argument to  subsequent  calls  of	towctrans().   The
       wctrans()  function  shall  determine  values  of  wctrans_t according to the rules of the coded character set defined by character mapping
       information in the program's locale (category LC_CTYPE ). The values returned by wctrans() shall be valid until a call to setlocale()  that
       modifies the category LC_CTYPE.

RETURN VALUE

       The  wctrans()  function  shall	return 0  and may set errno to indicate the error if the given character mapping name is not valid for the
       current locale (category LC_CTYPE ); otherwise, it shall return a non-zero object of type wctrans_t that can be	used  in  calls  to  towc-
       trans().

ERRORS

       The wctrans() function may fail if:

       EINVAL The character mapping name pointed to by charclass is not valid in the current locale.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       towctrans(), 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 Technol-
       ogy -- 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							       WCTRANS(3P)

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WCTRANS(3)                                                   Linux Programmer's Manual                                                  WCTRANS(3)

NAME

       wctrans - wide-character translation mapping

SYNOPSIS

       #include <wctype.h>

       wctrans_t wctrans(const char *name);

DESCRIPTION

       The  wctrans_t type represents a mapping which can map a wide character to another wide character.  Its nature is implementation-dependent,
       but the special value (wctrans_t) 0 denotes an invalid mapping.  Nonzero wctrans_t values can be passed to  the  towctrans(3)  function  to
       actually perform the wide-character mapping.

       The  wctrans()  function  returns  a  mapping,  given  by its name.  The set of valid names depends on the LC_CTYPE category of the current
       locale, but the following names are valid in all locales.

           "tolower" - realizes the tolower(3) mapping
           "toupper" - realizes the toupper(3) mapping

RETURN VALUE

       The wctrans() function returns a mapping descriptor if the name is valid.  Otherwise, it returns (wctrans_t) 0.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +----------+---------------+----------------+
       |Interface | Attribute     | Value          |
       +----------+---------------+----------------+
       |wctrans() | Thread safety | MT-Safe locale |
       +----------+---------------+----------------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, C99.

NOTES

       The behavior of wctrans() depends on the LC_CTYPE category of the current locale.

SEE ALSO

       towctrans(3)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU                                                                 2015-08-08                                                          WCTRANS(3)

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wctrans(3p) [suse man page]

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