wctrans(3) [x11r4 man page]

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)

WCTRANS(3)						   BSD Library Functions Manual 						WCTRANS(3)

NAME

     towctrans, towctrans_l, wctrans, wctrans_l -- wide character mapping functions

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <wctype.h>

     wint_t
     towctrans(wint_t wc, wctrans_t desc);

     wctrans_t
     wctrans(const char *charclass);

     #include <wctype.h>
     #include <xlocale.h>

     wint_t
     towctrans_l(wint_t wc, wctrans_t desc, locale_t loc);

     wctrans_t
     wctrans_l(const char *charclass, locale_t loc);

DESCRIPTION

     The wctrans() function returns a value of type wctrans_t, which represents the requested wide character mapping operation and may be used as
     the second argument for calls to towctrans().

     The following character mapping names are recognised:

	   tolower    toupper

     The towctrans() function transliterates the wide character wc, according to the mapping described by desc.

     While the towctrans() and wctrans() functions use the current locale, the towctrans_l() and wctrans_l() functions may be passed locales
     directly. See xlocale(3) for more information.

RETURN VALUES

     The towctrans() function returns the transliterated character if successful, otherwise it returns the character unchanged and sets errno.

     The wctrans() function returns non-zero if successful, otherwise it returns zero and sets errno.

EXAMPLES

     Reimplement towupper() in terms of towctrans() and wctrans():

	   wint_t
	   mytowupper(wint_t wc)
	   {
		   return (towctrans(wc, wctrans("toupper")));
	   }

ERRORS

     The towctrans() function will fail if:

     [EINVAL]		The supplied desc argument is invalid.

     The wctrans() function will fail if:

     [EINVAL]		The requested mapping name is invalid.

SEE ALSO

     tolower(3), toupper(3), wctype(3), xlocale(3)

STANDARDS

     The towctrans() and wctrans() functions conform to IEEE Std 1003.1-2001 (``POSIX.1'').

HISTORY

     The towctrans() and wctrans() functions first appeared in FreeBSD 5.0.

BSD
								  October 3, 2002							       BSD